Add support for LFKeyboard products: LFK78, LFK87 and SMK65

keyboards/lfkeyboards/TWIlib.c

@@ -0,0 +1,283 @@
+/*
+ * TWIlib.c
+ *
+ *  Created: 6/01/2014 10:41:33 PM
+ *  Author: Chris Herring
+ */
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "TWIlib.h"
+#include "util/delay.h"
+#include "print.h"
+
+void TWIInit()
+{
+	TWIInfo.mode = Ready;
+	TWIInfo.errorCode = 0xFF;
+	TWIInfo.repStart = 0;
+	// Set pre-scalers (no pre-scaling)
+	TWSR = 0;
+	// Set bit rate
+	TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;
+	// Enable TWI and interrupt
+	TWCR = (1 << TWIE) | (1 << TWEN);
+}
+
+uint8_t isTWIReady()
+{
+	if ( (TWIInfo.mode == Ready) | (TWIInfo.mode == RepeatedStartSent) )
+	{
+		return 1;
+	}
+	else
+	{
+		if(TWIInfo.mode == Initializing){
+			switch(TWIInfo.errorCode){
+		        case TWI_SUCCESS:
+		        case TWI_NO_RELEVANT_INFO:
+		        	break;
+				case TWI_LOST_ARBIT:
+				case TWI_MT_DATA_NACK:
+					// Some kind of I2C error, reset and re-init
+		        	xprintf("I2C init error: %d\n", TWIInfo.errorCode);
+			        TWCR = (1 << TWINT)|(1 << TWSTO);
+		        	TWIInit();
+		        	break;
+		        default:
+		        	xprintf("Other i2c init error: %d\n", TWIInfo.errorCode);
+			}
+		}
+		return 0;
+	}
+}
+
+
+void TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart, uint8_t blocking)
+{
+	// Wait until ready
+	while (!isTWIReady()) {_delay_us(1);}
+	// Reset the I2C stuff
+	TWCR = (1 << TWINT)|(1 << TWSTO);
+	TWIInit();
+	// Set repeated start mode
+	TWIInfo.repStart = repStart;
+	// Copy transmit info to global variables
+	TWITransmitBuffer = (uint8_t *)TXdata;
+	TXBuffLen = dataLen;
+	TXBuffIndex = 0;
+
+	// If a repeated start has been sent, then devices are already listening for an address
+	// and another start does not need to be sent.
+	if (TWIInfo.mode == RepeatedStartSent)
+	{
+		TWIInfo.mode = Initializing;
+		TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
+		TWISendTransmit(); // Send the data
+	}
+	else // Otherwise, just send the normal start signal to begin transmission.
+	{
+		TWIInfo.mode = Initializing;
+		TWISendStart();
+	}
+	if(blocking){
+		// Wait until ready
+		while (!isTWIReady()){_delay_us(1);}
+	}
+}
+
+
+// uint8_t TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart)
+// {
+// 	if (dataLen <= TXMAXBUFLEN)
+// 	{
+// 		// Wait until ready
+// 		while (!isTWIReady()) {_delay_us(1);}
+// 		// Set repeated start mode
+// 		TWIInfo.repStart = repStart;
+// 		// Copy data into the transmit buffer
+// 		uint8_t *data = (uint8_t *)TXdata;
+// 		for (int i = 0; i < dataLen; i++)
+// 		{
+// 			TWITransmitBuffer[i] = data[i];
+// 		}
+// 		// Copy transmit info to global variables
+// 		TXBuffLen = dataLen;
+// 		TXBuffIndex = 0;
+
+// 		// If a repeated start has been sent, then devices are already listening for an address
+// 		// and another start does not need to be sent.
+// 		if (TWIInfo.mode == RepeatedStartSent)
+// 		{
+// 			TWIInfo.mode = Initializing;
+// 			TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
+// 			TWISendTransmit(); // Send the data
+// 		}
+// 		else // Otherwise, just send the normal start signal to begin transmission.
+// 		{
+// 			TWIInfo.mode = Initializing;
+// 			TWISendStart();
+// 		}
+
+// 	}
+// 	else
+// 	{
+// 		return 1; // return an error if data length is longer than buffer
+// 	}
+// 	return 0;
+// }
+
+uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart)
+{
+	// Check if number of bytes to read can fit in the RXbuffer
+	if (bytesToRead < RXMAXBUFLEN)
+	{
+		// Reset buffer index and set RXBuffLen to the number of bytes to read
+		RXBuffIndex = 0;
+		RXBuffLen = bytesToRead;
+		// Create the one value array for the address to be transmitted
+		uint8_t TXdata[1];
+		// Shift the address and AND a 1 into the read write bit (set to write mode)
+		TXdata[0] = (TWIaddr << 1) | 0x01;
+		// Use the TWITransmitData function to initialize the transfer and address the slave
+		TWITransmitData(TXdata, 1, repStart, 0);
+	}
+	else
+	{
+		return 0;
+	}
+	return 1;
+}
+
+ISR (TWI_vect)
+{
+	switch (TWI_STATUS)
+	{
+		// ----\/ ---- MASTER TRANSMITTER OR WRITING ADDRESS ----\/ ----  //
+		case TWI_MT_SLAW_ACK: // SLA+W transmitted and ACK received
+		// Set mode to Master Transmitter
+		TWIInfo.mode = MasterTransmitter;
+		case TWI_START_SENT: // Start condition has been transmitted
+		case TWI_MT_DATA_ACK: // Data byte has been transmitted, ACK received
+			if (TXBuffIndex < TXBuffLen) // If there is more data to send
+			{
+				TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
+				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+				TWISendTransmit(); // Send the data
+			}
+			// This transmission is complete however do not release bus yet
+			else if (TWIInfo.repStart)
+			{
+				TWIInfo.errorCode = 0xFF;
+				TWISendStart();
+			}
+			// All transmissions are complete, exit
+			else
+			{
+				TWIInfo.mode = Ready;
+				TWIInfo.errorCode = 0xFF;
+				TWISendStop();
+			}
+			break;
+
+		// ----\/ ---- MASTER RECEIVER ----\/ ----  //
+
+		case TWI_MR_SLAR_ACK: // SLA+R has been transmitted, ACK has been received
+			// Switch to Master Receiver mode
+			TWIInfo.mode = MasterReceiver;
+			// If there is more than one byte to be read, receive data byte and return an ACK
+			if (RXBuffIndex < RXBuffLen-1)
+			{
+				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+				TWISendACK();
+			}
+			// Otherwise when a data byte (the only data byte) is received, return NACK
+			else
+			{
+				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+				TWISendNACK();
+			}
+			break;
+
+		case TWI_MR_DATA_ACK: // Data has been received, ACK has been transmitted.
+
+			/// -- HANDLE DATA BYTE --- ///
+			TWIReceiveBuffer[RXBuffIndex++] = TWDR;
+			// If there is more than one byte to be read, receive data byte and return an ACK
+			if (RXBuffIndex < RXBuffLen-1)
+			{
+				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+				TWISendACK();
+			}
+			// Otherwise when a data byte (the only data byte) is received, return NACK
+			else
+			{
+				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+				TWISendNACK();
+			}
+			break;
+
+		case TWI_MR_DATA_NACK: // Data byte has been received, NACK has been transmitted. End of transmission.
+
+			/// -- HANDLE DATA BYTE --- ///
+			TWIReceiveBuffer[RXBuffIndex++] = TWDR;
+			// This transmission is complete however do not release bus yet
+			if (TWIInfo.repStart)
+			{
+				TWIInfo.errorCode = 0xFF;
+				TWISendStart();
+			}
+			// All transmissions are complete, exit
+			else
+			{
+				TWIInfo.mode = Ready;
+				TWIInfo.errorCode = 0xFF;
+				TWISendStop();
+			}
+			break;
+
+		// ----\/ ---- MT and MR common ----\/ ---- //
+
+		case TWI_MR_SLAR_NACK: // SLA+R transmitted, NACK received
+		case TWI_MT_SLAW_NACK: // SLA+W transmitted, NACK received
+		case TWI_MT_DATA_NACK: // Data byte has been transmitted, NACK received
+		case TWI_LOST_ARBIT: // Arbitration has been lost
+			// Return error and send stop and set mode to ready
+			if (TWIInfo.repStart)
+			{
+				TWIInfo.errorCode = TWI_STATUS;
+				TWISendStart();
+			}
+			// All transmissions are complete, exit
+			else
+			{
+				TWIInfo.mode = Ready;
+				TWIInfo.errorCode = TWI_STATUS;
+				TWISendStop();
+			}
+			break;
+		case TWI_REP_START_SENT: // Repeated start has been transmitted
+			// Set the mode but DO NOT clear TWINT as the next data is not yet ready
+			TWIInfo.mode = RepeatedStartSent;
+			break;
+
+		// ----\/ ---- SLAVE RECEIVER ----\/ ----  //
+
+		// TODO  IMPLEMENT SLAVE RECEIVER FUNCTIONALITY
+
+		// ----\/ ---- SLAVE TRANSMITTER ----\/ ----  //
+
+		// TODO  IMPLEMENT SLAVE TRANSMITTER FUNCTIONALITY
+
+		// ----\/ ---- MISCELLANEOUS STATES ----\/ ----  //
+		case TWI_NO_RELEVANT_INFO: // It is not really possible to get into this ISR on this condition
+								   // Rather, it is there to be manually set between operations
+			break;
+		case TWI_ILLEGAL_START_STOP: // Illegal START/STOP, abort and return error
+			TWIInfo.errorCode = TWI_ILLEGAL_START_STOP;
+			TWIInfo.mode = Ready;
+			TWISendStop();
+			break;
+	}
+
+}

keyboards/lfkeyboards/TWIlib.h

@@ -0,0 +1,81 @@
+/*
+ * TWIlib.h
+ *
+ * Created: 6/01/2014 10:38:42 PM
+ *  Author: Chris Herring
+ */
+
+
+#ifndef TWILIB_H_
+#define TWILIB_H_
+// TWI bit rate
+#define TWI_FREQ 400000
+// Get TWI status
+#define TWI_STATUS	(TWSR & 0xF8)
+// Transmit buffer length
+#define TXMAXBUFLEN 20
+// Receive buffer length
+#define RXMAXBUFLEN 20
+// Global transmit buffer
+volatile uint8_t *TWITransmitBuffer;
+// Global receive buffer
+volatile uint8_t TWIReceiveBuffer[RXMAXBUFLEN];
+// Buffer indexes
+volatile int TXBuffIndex; // Index of the transmit buffer. Is volatile, can change at any time.
+int RXBuffIndex; // Current index in the receive buffer
+// Buffer lengths
+int TXBuffLen; // The total length of the transmit buffer
+int RXBuffLen; // The total number of bytes to read (should be less than RXMAXBUFFLEN)
+
+typedef enum {
+	Ready,
+	Initializing,
+	RepeatedStartSent,
+	MasterTransmitter,
+	MasterReceiver,
+	SlaceTransmitter,
+	SlaveReciever
+	} TWIMode;
+
+ typedef struct TWIInfoStruct{
+	TWIMode mode;
+	uint8_t errorCode;
+	uint8_t repStart;
+	}TWIInfoStruct;
+TWIInfoStruct TWIInfo;
+
+
+// TWI Status Codes
+#define TWI_START_SENT			0x08 // Start sent
+#define TWI_REP_START_SENT		0x10 // Repeated Start sent
+// Master Transmitter Mode
+#define TWI_MT_SLAW_ACK			0x18 // SLA+W sent and ACK received
+#define TWI_MT_SLAW_NACK		0x20 // SLA+W sent and NACK received
+#define TWI_MT_DATA_ACK			0x28 // DATA sent and ACK received
+#define TWI_MT_DATA_NACK		0x30 // DATA sent and NACK received
+// Master Receiver Mode
+#define TWI_MR_SLAR_ACK			0x40 // SLA+R sent, ACK received
+#define TWI_MR_SLAR_NACK		0x48 // SLA+R sent, NACK received
+#define TWI_MR_DATA_ACK			0x50 // Data received, ACK returned
+#define TWI_MR_DATA_NACK		0x58 // Data received, NACK returned
+
+// Miscellaneous States
+#define TWI_LOST_ARBIT			0x38 // Arbitration has been lost
+#define TWI_NO_RELEVANT_INFO	0xF8 // No relevant information available
+#define TWI_ILLEGAL_START_STOP	0x00 // Illegal START or STOP condition has been detected
+#define TWI_SUCCESS				0xFF // Successful transfer, this state is impossible from TWSR as bit2 is 0 and read only
+
+
+#define TWISendStart()		(TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<TWEN)|(1<<TWIE)) // Send the START signal, enable interrupts and TWI, clear TWINT flag to resume transfer.
+#define TWISendStop()		(TWCR = (1<<TWINT)|(1<<TWSTO)|(1<<TWEN)|(1<<TWIE)) // Send the STOP signal, enable interrupts and TWI, clear TWINT flag.
+#define TWISendTransmit()	(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // Used to resume a transfer, clear TWINT and ensure that TWI and interrupts are enabled.
+#define TWISendACK()		(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)|(1<<TWEA)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled and respond with an ACK if the device is addressed as a slave or after it receives a byte.
+#define TWISendNACK()		(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled but DO NOT respond with an ACK if the device is addressed as a slave or after it receives a byte.
+
+// Function declarations
+void TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart, uint8_t blocking);
+void TWIInit(void);
+uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart);
+uint8_t isTWIReady(void);
+
+#endif // TWICOMMS_H_

keyboards/lfkeyboards/issi.c

@@ -0,0 +1,244 @@
+#ifdef ISSI_ENABLE
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <util/delay.h>
+#include <avr/sfr_defs.h>
+#include <avr/io.h>
+#include <util/twi.h>
+#include "issi.h"
+#include "print.h"
+#include "TWIlib.h"
+
+#define ISSI_ADDR_DEFAULT 0xE8
+
+#define ISSI_REG_CONFIG 0x00
+#define ISSI_REG_CONFIG_PICTUREMODE 0x00
+#define ISSI_REG_CONFIG_AUTOPLAYMODE 0x08
+
+#define ISSI_CONF_PICTUREMODE 0x00
+#define ISSI_CONF_AUTOFRAMEMODE 0x04
+#define ISSI_CONF_AUDIOMODE 0x08
+
+#define ISSI_REG_PICTUREFRAME 0x01
+
+#define ISSI_REG_SHUTDOWN 0x0A
+#define ISSI_REG_AUDIOSYNC 0x06
+
+#define ISSI_COMMANDREGISTER 0xFD
+#define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine'
+uint8_t control[8][9] = {
+    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
+    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
+    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
+    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
+};
+ISSIDeviceStruct *issi_devices[4] = {0, 0, 0, 0};
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+#define I2C_WRITE 0
+#define F_SCL 400000UL // SCL frequency
+#define Prescaler 1
+#define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)
+
+uint8_t i2c_start(uint8_t address)
+{
+    // reset TWI control register
+    TWCR = 0;
+    // transmit START condition
+    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+    // wait for end of transmission
+    while( !(TWCR & (1<<TWINT)) );
+
+    // check if the start condition was successfully transmitted
+    if((TWSR & 0xF8) != TW_START){ return 1; }
+
+    // load slave address into data register
+    TWDR = address;
+    // start transmission of address
+    TWCR = (1<<TWINT) | (1<<TWEN);
+    // wait for end of transmission
+    while( !(TWCR & (1<<TWINT)) );
+
+    // check if the device has acknowledged the READ / WRITE mode
+    uint8_t twst = TW_STATUS & 0xF8;
+    if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
+
+    return 0;
+}
+
+uint8_t i2c_write(uint8_t data)
+{
+    // load data into data register
+    TWDR = data;
+    // start transmission of data
+    TWCR = (1 << TWINT) | (1 << TWEN);
+    // wait for end of transmission
+    while (!(TWCR & (1 << TWINT)))
+        ;
+
+    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
+        return 1;
+    }
+    return 0;
+}
+
+uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length)
+{
+    TWBR = (uint8_t)TWBR_val;
+    if (i2c_start(address | I2C_WRITE))
+        return 1;
+    for (uint16_t i = 0; i < length; i++) {
+        if (i2c_write(data[i]))
+            return 1;
+    }
+    // transmit STOP condition
+    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
+    return 0;
+}
+
+void setFrame(uint8_t device, uint8_t frame)
+{
+    static uint8_t current_frame = -1;
+    if(current_frame != frame){
+        uint8_t payload[] = {
+            ISSI_ADDR_DEFAULT | device << 1,
+            ISSI_COMMANDREGISTER,
+            frame
+        };
+        TWITransmitData(payload, sizeof(payload), 0, 1);
+    }
+    // static uint8_t current_frame = 0xFF;
+    // if(current_frame == frame){
+    //     // return;
+    // }
+    // uint8_t payload[2] = { ISSI_COMMANDREGISTER, frame };
+    // i2c_transmit(ISSI_ADDR_DEFAULT | device << 1, payload, 2);
+    // current_frame = frame;
+}
+
+void writeRegister8(uint8_t device, uint8_t frame, uint8_t reg, uint8_t data)
+{
+    // Set the frame
+    setFrame(device, frame);
+
+    // Write to the register
+    uint8_t payload[] = {
+        ISSI_ADDR_DEFAULT | device << 1,
+        reg,
+        data
+    };
+    TWITransmitData(payload, sizeof(payload), 0, 1);
+}
+
+void activateLED(uint8_t matrix, uint8_t cx, uint8_t cy, uint8_t pwm)
+{
+    uint8_t device_addr = (matrix & 0x06) >> 1;
+    ISSIDeviceStruct *device = issi_devices[device_addr];
+    if(device == 0){
+        return;
+    }
+    // xprintf("activeLED: %02X %02X %02X %02X\n", matrix, cy, cx, pwm);
+    uint8_t x = cx - 1;  // funciton takes 1 based counts, but we need 0...
+    uint8_t y = cy - 1;  // creating them once for less confusion
+    uint8_t control_reg = (y << 1) | (matrix & 0x01);
+    if(pwm == 0){
+        cbi(device->led_ctrl[control_reg], x);
+        cbi(device->led_blink_ctrl[control_reg], x);
+     }else{
+        sbi(device->led_ctrl[control_reg], x);
+        sbi(device->led_blink_ctrl[control_reg], x);
+    }
+    uint8_t pwm_reg = 0;
+    switch(matrix & 0x01){
+        case 0:
+            pwm_reg = 0x00;
+            break;
+        case 1:
+            pwm_reg = 0x08;
+            break;
+    }
+    pwm_reg += (y << 4) + x;
+    device->led_pwm[pwm_reg] = pwm;
+    device->led_dirty = 1;
+}
+
+void update_issi(uint8_t device_addr, uint8_t blocking)
+{
+    // This seems to take about 6ms
+    ISSIDeviceStruct *device = issi_devices[device_addr];
+    if(device != 0){
+        if(device->fn_dirty){
+            device->fn_dirty = 0;
+            setFrame(device_addr, ISSI_BANK_FUNCTIONREG);
+            TWITransmitData(&device->fn_device_addr, sizeof(device->fn_registers) + 2, 0, 1);
+        }
+        if(device->led_dirty){
+            device->led_dirty = 0;
+            setFrame(device_addr, 0);
+            TWITransmitData(&device->led_device_addr, 0xB6, 0, blocking);
+        }
+    }
+}
+
+void issi_init(void)
+{
+    TWIInit();
+    for(uint8_t device_addr = 0; device_addr < 4; device_addr++){
+        // If this device has been previously allocated, free it
+        if(issi_devices[device_addr] != 0){
+            free(issi_devices[device_addr]);
+        }
+        // Try to shutdown the device, if this fails skip this device
+        writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x00);
+        while (!isTWIReady()){_delay_us(1);}
+        if(TWIInfo.errorCode != 0xFF){
+            xprintf("ISSI init failed %d %02X %02X\n", device_addr, TWIInfo.mode, TWIInfo.errorCode);
+            continue;
+        }
+        // Allocate the device structure - calloc zeros it for us
+        ISSIDeviceStruct *device = (ISSIDeviceStruct *)calloc(sizeof(ISSIDeviceStruct) * 2, 1);
+        issi_devices[device_addr] = device;
+        device->fn_device_addr = ISSI_ADDR_DEFAULT | device_addr << 1;
+        device->fn_register_addr = 0;
+        device->led_device_addr = ISSI_ADDR_DEFAULT | device_addr << 1;
+        device->led_register_addr = 0;
+        // set dirty bits so that all of the buffered data is written out
+        device->fn_dirty = 1;
+        device->led_dirty = 1;
+        update_issi(device_addr, 1);
+        // Set the function register to picture mode
+        // device->fn_reg[ISSI_REG_CONFIG] = ISSI_REG_CONFIG_PICTUREMODE;
+        writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x01);
+    }
+
+    // Shutdown and set all registers to 0
+    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x00);
+    // for(uint8_t bank = 0; bank <= 7; bank++){
+    //     for (uint8_t reg = 0x00; reg <= 0xB3; reg++) {
+    //         writeRegister8(device_addr, bank, reg, 0x00);
+    //     }
+    // }
+    // for (uint8_t reg = 0; reg <= 0x0C; reg++) {
+    //     writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, reg, 0x00);
+    // }
+    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE);
+    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x01);
+    // picture mode
+    // writeRegister8(ISSI_BANK_FUNCTIONREG, 0x01, 0x01);
+
+    //Enable blink
+    // writeRegister8(ISSI_BANK_FUNCTIONREG, 0x05, 0x48B);
+
+    //Enable Breath
+
+}
+
+#endif

keyboards/lfkeyboards/issi.h

@@ -0,0 +1,40 @@
+#ifdef ISSI_ENABLE
+#ifndef ISSI_H
+#define ISSI_H
+
+typedef struct ISSIDeviceStruct{
+    uint8_t fn_dirty;       // function registers need to be resent
+    uint8_t fn_device_addr;
+    uint8_t fn_register_addr;
+    uint8_t fn_registers[13];
+    uint8_t led_dirty;      // LED data has changed and needs to be resent
+    uint8_t led_device_addr;
+    uint8_t led_register_addr;
+    uint8_t led_ctrl[18];
+    uint8_t led_blink_ctrl[18];
+    uint8_t led_pwm[144];
+}ISSIDeviceStruct;
+
+extern ISSIDeviceStruct *issi_devices[];
+
+// Low level commands- 'device' is the 2-bit i2c id.
+void issi_init(void);
+void set_shutdown(uint8_t device, uint8_t shutdown);
+void writeRegister8(uint8_t device, uint8_t frame, uint8_t reg, uint8_t data);
+
+// Higher level, no device is given, but it is calculated from 'matrix'
+// Each device has 2 blocks, max of 4 devices:
+//  Device  |   Block   =   Matrix
+//    0           A           0
+//    0           B           1
+//    1           A           2
+//    1           B           3
+//    2           A           4
+//    2           B           5
+//    3           A           6
+//    3           B           7
+void activateLED(uint8_t matrix, uint8_t cx, uint8_t cy, uint8_t pwm);
+void update_issi(uint8_t device_addr, uint8_t blocking);
+
+#endif
+#endif

keyboards/lfkeyboards/lfk78/config.h

@@ -0,0 +1,172 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    LFKeyboards
+#define PRODUCT         LFK78
+#define DESCRIPTION     QMK keyboard firmware for LFK78 LFK_REV_STRING
+
+#ifdef LFK_REV_B
+/* RevB Matrix config */
+    #define DIODE_DIRECTION COL2ROW
+    #define MATRIX_ROWS 10
+    #define MATRIX_COLS 8
+    #define MATRIX_ROW_PINS { B0, B1, B2, B3, B4, F0, F1, F4, F5, F6}
+    #define MATRIX_COL_PINS { E6, F7, D2, D3, D4, D5, D6, D7 }
+    #define UNUSED_PINS { C7 }
+    #define RGBLED_NUM 31     // Number of LEDs
+#else
+/* RevC/D Matrix config */
+    #define DIODE_DIRECTION COL2ROW
+    #define MATRIX_ROWS 5
+    #define MATRIX_COLS 18
+    #define MATRIX_ROW_PINS {D2, D3, D4, D5, D6 }
+    #define MATRIX_COL_PINS {A0, A1, A2, A3, A4, A5, A6, A7, E6, E7,\
+                             F0, F1, F2, F3, C0, C1, C2, C3 }
+    #define UNUSED_PINS {B0, B1, B2, B3, B4, B4, B5, B6, B7, C4, C5, C6, C7,\
+                         D0, D1, D7, E0, E1, E2, E3, E4, D5, F4, F5, F6, F7,\
+                         E6, E7, F0, F1, F2, F3, C0, C1, C2, C3}
+    #define RGBLED_NUM 27     // Number of LEDs
+#endif
+
+#define AUDIO_VOICES
+#define C6_AUDIO
+
+#define BACKLIGHT_LEVELS 8
+#define BACKLIGHT_PWM_MAP {8, 16, 40, 55, 70, 128, 200, 255}
+
+#define RGB_DI_PIN C7  // Have to set it to something to get the ws2812 code to compile
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+#define TAPPING_TERM 200
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP1          H
+//#define MAGIC_KEY_HELP2          SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0_ALT1    ESC
+//#define MAGIC_KEY_LAYER0_ALT2    GRAVE
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     PAUSE
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif

keyboards/lfkeyboards/lfk78/keymaps/default/config.h

@@ -0,0 +1,8 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+// place overrides here
+
+#endif

keyboards/lfkeyboards/lfk78/keymaps/default/keymap.c

@@ -0,0 +1,123 @@
+#include "lfk78.h"
+#include "issi.h"
+#include "lighting.h"
+#include "action_layer.h"
+
+//Define a shorter 'transparent' key code to make the keymaps more compact
+#define KC_TR KC_TRNS
+
+enum keymap_layout {
+    VANILLA = 0,  // matches MF68 layout
+    FUNC,         // 0x02
+    SETTINGS,     // 0x04
+};
+
+// Colors of the layer indicator LED
+// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
+const Layer_Info layer_info[] = {
+  // Layer     Mask           Red     Green   Blue
+  {0x00000000, 0xFFFFFFFF, {0x0000, 0x0FFF, 0x0000}}, // base layer - green
+  {0x00000002, 0xFFFFFFFE, {0x0000, 0x0000, 0x0FFF}}, // function layer - blue
+  {0x00000004, 0xFFFFFFFC, {0x0FFF, 0x0000, 0x0FFF}}, // settings layer - magenta
+  {0xFFFFFFFF, 0xFFFFFFFF, {0x0FFF, 0x0FFF, 0x0FFF}}, // unknown layer - REQUIRED - white
+};
+
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[VANILLA] = KEYMAP(
+  /* Keymap VANILLA: (Base Layer) Default Layer
+   * ,---------.  ,------------------------------------------------------------.  ,---------.
+   * | F1 | F2 |  |Esc~| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |  0| - | = |Backspa|  | Ins|PgUp|
+   * |---------|  |------------------------------------------------------------|  |---------|
+   * | F3 | F4 |  |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|     \|  | Del|PgDn|
+   * |---------|  |------------------------------------------------------------|  `---------'
+   * | F5 | F6 |  |CAPS    |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |
+   * |---------|  |------------------------------------------------------------|  ,----.
+   * | F7 | F8 |  |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift      |  | Up |
+   * |---------|  |-------------------------------------------------------------------------.
+   * | F9 | F10|  |Ctrl|Win |Alt |      Space            |Alt |Ctrl|Func |    |Lft| Dn |Rig |
+   * `---------'  `------------------------------------------------------'    `-------------'
+   */
+  KC_F1, KC_F2,       KC_GESC,KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL,   KC_BSPC,  KC_INS, KC_PGUP,
+  KC_F3, KC_F4,       KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS,  KC_DEL, KC_PGDN,
+  KC_F5, KC_F6,       KC_CAPS,  KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,      KC_ENT,
+  KC_F7, KC_F8,       KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH,          KC_RSFT,   KC_UP,
+  KC_F9, KC_F10,      KC_LCTL, KC_LGUI, KC_LALT,              KC_SPC,           KC_RALT, KC_RCTL, MO(FUNC), KC_LEFT, KC_DOWN, KC_RGHT),
+  /* Keymap FUNCTION: Function Layer
+   * ,---------.  ,-------------------------------------------------------------.  ,---------.
+   * |    |    |  | ` |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|Delete   |  | Ins|Home|
+   * |---------|  |-------------------------------------------------------------|  |---------|
+   * |    |    |  |Tab  |Hom| Up|End|PgU|   |   |   |   |   |   |   |   |       |  | Del|End |
+   * |---------|  |-------------------------------------------------------------|  `---------'
+   * |    |    |  |MO(FUNC)|Lft|Dn |Rig|PgD|   |Lft|Dwn| Up|Rgt|   |   |        |
+   * |---------|  |-------------------------------------------------------------|  ,----.
+   * |    |    |  |Shift   |   |   |   |   |   |   |Mute|V- |V+ |  |TG(SETTINGS)|  | Up |
+   * |---------|  |--------------------------------------------------------------------------.
+   * |    |    |  |Ctrl|Win |Alt |        Enter         |Alt |Func |CTRL |     |Lft| Dn |Rig |
+   * `---------'  `------------------------------------------------------'     `-------------'
+   */
+[FUNC] = KEYMAP(
+  KC_TR,   KC_TR,    KC_GRV,  KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12,       KC_DEL,  KC_TR, KC_HOME,
+  KC_TR,   KC_TR,    KC_NO,KC_HOME, KC_UP, KC_END, KC_PGUP, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,         KC_NO,  KC_TR, KC_END,
+  KC_TR,   KC_TR,    KC_TR,   KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, KC_NO, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_NO, KC_NO,    KC_NO,
+  KC_TR,   KC_TR,    KC_TR,    KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_MUTE, KC_VOLD, KC_VOLU, KC_NO,           TG(SETTINGS),  KC_TR,
+  KC_TR,   KC_TR,    KC_TR,  KC_TR, KC_TR,                  KC_ENT,                            KC_TR, KC_TR, KC_TR,         KC_TR,  KC_TR, KC_TR),
+
+  /* Keymap SETTINGS: Settings Layer
+   * ,---------.  ,-------------------------------------------------------------.  ,-------------.
+   * |    |    |  |LayClr|   |   |   |   |   |   |   |   |  |   |BL-|BL+|BL Togl|  |RGB Tog |Val+|
+   * |---------|  |-------------------------------------------------------------|  |-------------|
+   * |    |    |  |MuMode |   |   |   |   |   |   |   |   |   |   |   |  |LEDTst|  |RGB Mode|Val-|
+   * |---------|  |-------------------------------------------------------------|  `-------------'
+   * |    |    |  |AudTgl   |Hz+|MS+|   |   |   |   |   |   |   |   |   |  RST  |
+   * |---------|  |-------------------------------------------------------------|  ,----.
+   * |    |    |  |ClickTgl  |Hz-|MS-|   |   |   |   |MuTgl|  |  |   |Layer Clr |  |Hue+|
+   * |---------|  |-------------------------------------------------------------------------.
+   * |    |    |  |    |    |    |                         |    |    |     |  |Sat-|Hue-|Sat+|
+   * `---------'  `--------------------------------------------------------'  `--------------'
+   */
+[SETTINGS] = KEYMAP(
+  KC_NO,   KC_NO,    KC_FN0,KC_NO,KC_NO,KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, BL_DEC, BL_INC,  BL_TOGG,    RGB_TOG, RGB_VAI,
+  KC_NO,   KC_NO,    MU_MOD, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,   KC_NO,    RGB_MOD, RGB_VAD,
+  KC_NO,   KC_NO,    AU_TOG,  KC_FN1,KC_FN3, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,        RESET,
+  KC_NO,   KC_NO,    KC_FN5,    KC_FN2,KC_FN4, KC_NO, KC_NO, KC_NO, KC_NO, MU_TOG, KC_NO, KC_NO, KC_NO,             KC_NO,    RGB_HUI,
+  KC_NO,   KC_NO,    KC_NO, KC_NO, KC_NO,                  KC_NO,                           KC_NO, KC_NO, KC_NO,    RGB_SAD, RGB_HUD, RGB_SAI),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    ACTION_FUNCTION(LFK_CLEAR),                               // FN0 - reset layers
+    ACTION_FUNCTION(LFK_CLICK_FREQ_HIGHER),                   // FN1 - Increase Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_FREQ_LOWER),                    // FN2 - Decrease Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_LONGER),                   // FN3 - Increase length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_SHORTER),                  // FN4 - Decrease length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TOGGLE),                        // FN5 - Toggle audio click
+  };
+
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+      switch(id) {
+      }
+    return MACRO_NONE;
+};
+
+
+void matrix_init_user(void) {
+    // This keymap only has a single base layer, so reset the default if needed
+    if(eeconfig_read_default_layer() > 1){
+        eeconfig_update_default_layer(1);
+        default_layer_set(1);
+    }
+}
+
+void matrix_scan_user(void) {
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+}

keyboards/lfkeyboards/lfk78/keymaps/default/readme.md

@@ -0,0 +1 @@
+# The default keymap for LFK78

keyboards/lfkeyboards/lfk78/keymaps/default/rules.mk

@@ -0,0 +1,42 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+
+BOOTMAGIC_ENABLE = no           # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
+CONSOLE_ENABLE = no             # Console for debug(+400)
+COMMAND_ENABLE = no             # Commands for debug and configuration
+NKRO_ENABLE = yes               # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
+MIDI_ENABLE = no                # MIDI controls
+AUDIO_ENABLE = yes               # Audio output on port C6
+UNICODE_ENABLE = no             # Unicode
+BLUETOOTH_ENABLE = no           # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = yes           # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_CUSTOM_DRIVER = yes    # RGB code is implemented in lefkeyboards, not qmk base
+SLEEP_LED_ENABLE = yes          # Breathing sleep LED during USB suspend
+TAP_DANCE_ENABLE = no
+
+ISSI_ENABLE = yes           # If the I2C pullup resistors aren't install this must be disabled
+WATCHDOG_ENABLE = no       # Resets keyboard if matrix_scan isn't run every 250ms
+
+ifndef QUANTUM_DIR
+    include ../../../../Makefile
+endif
+
+ifeq ($(strip $(ISSI_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DISSI_ENABLE
+endif
+
+ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
+endif
+
+# Override the LFK78 hardware version:
+#
+# B   - first public release, uses atmega32u4, has audio, ISSI matrix split between RGB and backlight
+# C-H - at90usb1286, no audio, ISSI device 0 is backlight, 4 is RGB
+# J   - at90usb646, C6 audio, ISSI device 0 is backlight, 4 is RGB
+# LFK_REV = J

keyboards/lfkeyboards/lfk78/lfk78.c

@@ -0,0 +1,225 @@
+#include <avr/sfr_defs.h>
+#include <avr/timer_avr.h>
+#include <avr/wdt.h>
+#include "lfk78.h"
+#include "keymap.h"
+#include "issi.h"
+#include "TWIlib.h"
+#include "lighting.h"
+#include "debug.h"
+#include <audio/audio.h>
+
+uint16_t click_hz = CLICK_HZ;
+uint16_t click_time = CLICK_MS;
+uint8_t click_toggle = CLICK_ENABLED;
+
+void matrix_init_kb(void)
+{
+    matrix_init_user();
+
+    // Configure the Layer LED
+    // Set up 16 bit PWM: Fast PWM, mode 15, inverted
+    TCCR1A = 0b11111110;
+    TCCR1B = 0b00011001;
+    ICR1 = 0xFFFF;
+    // PWM values - 0xFFFF = off, 0x0000 = max
+    OCR1C = 0x0000; // B7 - Blue
+    OCR1B = 0x0000; // B6 - Green
+    OCR1A = 0x0FFF; // B5 - Red
+    // Set as output
+    DDRB |= 0b11100000;
+
+#ifndef AUDIO_ENABLE
+    // If we're not using the audio pin, drive it low
+    sbi(DDRC, 6);
+    cbi(PORTC, 6);
+#endif
+
+#ifdef ISSI_ENABLE
+    issi_init();
+#endif
+#ifdef WATCHDOG_ENABLE
+    // This is done after turning the layer LED red, if we're caught in a loop
+    // we should get a flashing red light
+    wdt_enable(WDTO_500MS);
+#endif
+
+}
+
+void matrix_scan_kb(void)
+{
+#ifdef WATCHDOG_ENABLE
+    wdt_reset();
+#endif
+#ifdef ISSI_ENABLE
+    // switch/underglow lighting update
+    static uint32_t issi_device = 0;
+    static uint32_t twi_last_ready = 0;
+    if(twi_last_ready > 1000){
+        // Its been way too long since the last ISSI update, reset the I2C bus and start again
+        dprintf("TWI failed to recover, TWI re-init\n");
+        twi_last_ready = 0;
+        TWIInit();
+        force_issi_refresh();
+    }
+    if(isTWIReady()){
+        twi_last_ready = 0;
+        // If the i2c bus is available, kick off the issi update, alternate between devices
+        update_issi(issi_device, issi_device);
+        if(issi_device){
+            issi_device = 0;
+        }else{
+            issi_device = 3;
+        }
+    }else{
+        twi_last_ready++;
+    }
+#endif
+    // Update layer indicator LED
+    //
+    // Not sure how else to reliably do this... TMK has the 'hook_layer_change'
+    // but can't find QMK equiv
+    static uint32_t layer_indicator = -1;
+    if(layer_indicator != layer_state){
+        for(uint32_t i=0;; i++){
+            // the layer_info list should end with layer 0xFFFFFFFF
+            // it will break this out of the loop and define the unknown layer color
+            if((layer_info[i].layer == (layer_state & layer_info[i].mask)) || (layer_info[i].layer == 0xFFFFFFFF)){
+                OCR1A = layer_info[i].color.red;
+                OCR1B = layer_info[i].color.green;
+                OCR1C = layer_info[i].color.blue;
+                layer_indicator = layer_state;
+                break;
+            }
+        }
+    }
+    matrix_scan_user();
+}
+
+void click(uint16_t freq, uint16_t duration){
+#ifdef AUDIO_ENABLE
+    if(freq >= 100 && freq <= 20000 && duration < 100){
+        play_note(freq, 10);
+        for (uint16_t i = 0; i < duration; i++){
+            _delay_ms(1);
+        }
+        stop_all_notes();
+    }
+#endif
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t* record)
+{
+    if (click_toggle && record->event.pressed){
+        click(click_hz, click_time);
+    }
+    if (keycode == RESET) {
+        reset_keyboard_kb();
+    } else {
+    }
+    return process_record_user(keycode, record);
+}
+
+void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
+{
+#ifdef AUDIO_ENABLE
+    int8_t sign = 1;
+#endif
+    if(id == LFK_ESC_TILDE){
+        // Send ~ on shift-esc
+        void (*method)(uint8_t) = (event->event.pressed) ? &add_key : &del_key;
+        uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+        if(layer_state == 0){
+            method(shifted ? KC_GRAVE : KC_ESCAPE);
+        }else{
+            method(shifted ? KC_ESCAPE : KC_GRAVE);
+        }
+        send_keyboard_report();
+    }else if(event->event.pressed){
+        switch(id){
+            case LFK_SET_DEFAULT_LAYER:
+                // set/save the current base layer to eeprom, falls through to LFK_CLEAR
+                eeconfig_update_default_layer(1UL << opt);
+                default_layer_set(1UL << opt);
+            case LFK_CLEAR:
+                // Go back to default layer
+                layer_clear();
+                break;
+#ifdef ISSI_ENABLE
+            case LFK_LED_TEST:
+                led_test();
+                break;
+#endif
+#ifdef AUDIO_ENABLE
+            case LFK_CLICK_FREQ_LOWER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_FREQ_HIGHER:
+                click_hz += sign * 100;
+                click(click_hz, click_time);
+                break;
+            case LFK_CLICK_TOGGLE:
+                if(click_toggle){
+                    click_toggle = 0;
+                    click(4000, 100);
+                    click(1000, 100);
+                }else{
+                    click_toggle = 1;
+                    click(1000, 100);
+                    click(4000, 100);
+                }
+                break;
+            case LFK_CLICK_TIME_SHORTER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_TIME_LONGER:
+                click_time += sign;
+                click(click_hz, click_time);
+                break;
+#endif
+            case LFK_DEBUG_SETTINGS:
+                dprintf("Click:\n");
+                dprintf("  toggle: %d\n", click_toggle);
+                dprintf("  freq(hz): %d\n", click_hz);
+                dprintf("  duration(ms): %d\n", click_time);
+                break;
+        }
+    }
+}
+
+void reset_keyboard_kb(){
+#ifdef WATCHDOG_ENABLE
+    MCUSR = 0;
+    wdt_disable();
+    wdt_reset();
+#endif
+    OCR1A = 0x0000; // B5 - Red
+    OCR1B = 0x0FFF; // B6 - Green
+    OCR1C = 0x0FFF; // B7 - Blue
+    reset_keyboard();
+}
+
+void led_set_kb(uint8_t usb_led)
+{
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+    led_set_user(usb_led);
+}
+
+// LFK lighting info
+const uint8_t switch_matrices[] = {0, 1};
+const uint8_t rgb_matrices[] = {6, 7};
+const uint8_t rgb_sequence[] = {
+    12, 11, 10, 9, 16, 32, 31, 30, 28, 25, 24, 22, 21,
+    20, 19, 18, 17, 1, 2, 3, 4, 5, 6, 7, 8, 14, 13
+};
+// Maps switch LEDs from Row/Col to ISSI matrix.
+// Value breakdown:
+//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+//            /    \ ISSI Col  |    ISSI Row   |
+//          matrix idx
+const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] =
+KEYMAP(
+  0x19, 0x18,   0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94,   0x93,   0x92, 0x91,
+  0x29, 0x28,    0x27,  0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3,   0xA2, 0xA1,
+  0x39, 0x38,      0x37,  0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5,     0xB3,
+  0x49, 0x48,    0x47,     0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5,          0xC4,   0xC2,
+  0x59, 0x58,   0x57,  0x56,  0x55,             0x51,                   0xD6, 0xE5, 0xE4,         0xE3, 0xE2, 0xE1);

keyboards/lfkeyboards/lfk78/lfk78.h

@@ -0,0 +1,155 @@
+#ifndef LFK78_H
+#define LFK78_H
+
+/* if the kb.h file exists (because we're running from qmkbuilder) include it */
+#if __has_include("kb.h")
+#include "kb.h"
+#endif
+
+#include "quantum.h"
+#include "matrix.h"
+#include <avr/sfr_defs.h>
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+
+typedef struct RGB_Color {
+    uint16_t red;
+    uint16_t green;
+    uint16_t blue;
+} RGB_Color;
+
+typedef struct Layer_Info {
+    uint32_t layer;
+    uint32_t mask;
+    RGB_Color color;
+} Layer_Info;
+
+extern const uint32_t layer_count;
+extern const Layer_Info layer_info[];
+
+enum action_functions {
+    LFK_CLEAR = 0,          // Resets all layers
+    LFK_ESC_TILDE,          // esc+lshift = ~
+    LFK_SET_DEFAULT_LAYER,  // changes and saves current base layer to eeprom
+    LFK_CLICK_TOGGLE,       // Adjusts click duration
+    LFK_CLICK_FREQ_HIGHER,  // Adjusts click frequency
+    LFK_CLICK_FREQ_LOWER,   // Adjusts click frequency
+    LFK_CLICK_TIME_LONGER,  // Adjusts click duration
+    LFK_CLICK_TIME_SHORTER, // Adjusts click duration
+    LFK_DEBUG_SETTINGS,     // prints LED and click settings to HID
+    LFK_LED_TEST            // cycles through switch and RGB LEDs
+};
+
+#define CLICK_HZ 500
+#define CLICK_MS 2
+#define CLICK_ENABLED 0
+
+void reset_keyboard_kb(void);
+void click(uint16_t freq, uint16_t duration);
+
+#ifdef LFK_REV_B
+    /* RevB Keymap */
+    // This a shortcut to help you visually see your layout.
+    /*
+    * ,---------.  ,-----------------------------------------------------------------------.  ,---------.
+    * |  0 |  1 |  |  2 |  3 |  4 |  5 |  6 |  7 | 50 | 51 | 52 | 53 | 54 | 55 | 56 |   57 |  | 94 | 95 |
+    * |---------|  |-----------------------------------------------------------------------|  |---------|
+    * | 10 | 11 |  | 12  | 13 | 14 | 15 | 16 |  17 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 |  | 96 | 97 |
+    * |---------|  |-----------------------------------------------------------------------|  `---------'
+    * | 20 | 21 |  | 22    | 23 | 24 | 25 | 26 | 27 | 70 | 71 | 72 | 73 | 74 | 75 |     76 |
+    * |---------|  |-----------------------------------------------------------------------|  ,----.
+    * | 30 | 31 |  | 32      | 33 | 34 | 35 | 36 | 37 | 80 | 81 | 82 | 83 | 84 |        85 |  | 86 |
+    * |---------|  |-------------------------------------------------------------------------------------.
+    * | 40 | 41 |  | 42  | 43  | 44 |               45                |  46 |  47 |  90 | | 91 | 92 | 93 |
+    * `---------'  `--------------------------------------------------------------------' `--------------'
+    */
+    // The first section contains all of the arguements
+    // The second converts the arguments into a two-dimensional array
+    #define KEYMAP( \
+        k00, k01,   k02, k03, k04, k05, k06, k07, k50, k51, k52, k53, k54, k55, k56, k57,   k94, k95, \
+        k10, k11,   k12, k13, k14, k15, k16, k17, k60, k61, k62, k63, k64, k65, k66, k67,   k96, k97, \
+        k20, k21,   k22, k23, k24, k25, k26, k27, k70, k71, k72, k73, k74, k75, k76, \
+        k30, k31,   k32, k33, k34, k35, k36, k37, k80, k81, k82, k83, k84, k85, k86, \
+        k40, k41,   k42, k43, k44, k45, k46, k47, k90, k91, k92, k93 \
+    ) { \
+        { k00, k01, k02, k03, k04, k05, k06, k07, }, \
+        { k10, k11, k12, k13, k14, k15, k16, k17, }, \
+        { k20, k21, k22, k23, k24, k25, k26, k27, }, \
+        { k30, k31, k32, k33, k34, k35, k36, k37, }, \
+        { k40, k41, k42, k43, k44, k45, k46, k47, }, \
+        { k50, k51, k52, k53, k54, k55, k56, k57, }, \
+        { k60, k61, k62, k63, k64, k65, k66, k67, }, \
+        { k70, k71, k72, k73, k74, k75, k76, KC_NO,}, \
+        { k80, k81, k82, k83, k84, k85, k86, KC_NO,}, \
+        { k90, k91, k92, k93, k94, k95, k96, k97, }, \
+    }
+#else
+    /* RevC/D Keymap */
+    // This a shortcut to help you visually see your layout.
+    /*
+    * ,---------.  ,-----------------------------------------------------------------------.  ,---------.
+    * | 11 | 12 |  | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 1A | 1B | 1C | 1D | 1E | 1F |   1G |  | 1H | 1I |
+    * |---------|  |-----------------------------------------------------------------------|  |---------|
+    * | 21 | 22 |  | 23  | 24 | 25 | 26 | 27 | 28 | 29 | 2A | 2B | 2C | 2D | 2E | 2F |  2G |  | 2H | 2I |
+    * |---------|  |-----------------------------------------------------------------------|  `---------'
+    * | 31 | 32 |  | 33    | 34 | 35 | 36 | 37 | 38 | 39 | 3A | 3B | 3C | 3D | 3E |     3F |
+    * |---------|  |-----------------------------------------------------------------------|  ,----.
+    * | 41 | 42 |  | 43      | 45 | 46 | 47 | 48 | 49 | 4A | 4B | 4C | 4D | 4E |        4F |  | 4H |
+    * |---------|  |-------------------------------------------------------------------------------------.
+    * | 51 | 52 |  | 53  | 54  | 55 |               59                |  5D |  5E |  5F | | 5G | 5H | 5I |
+    * `---------'  `--------------------------------------------------------------------' `--------------'
+    */
+    // The first section contains all of the arguements
+    // The second converts the arguments into a two-dimensional array
+    #define KEYMAP( \
+        k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I, \
+        k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I, \
+        k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E,      k3F, \
+        k41, k42,   k43,  k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E,          k4F,   k4H, \
+        k51, k52,   k53, k54, k55,              k59,                  k5D, k5E, k5F,   k5G, k5H, k5I \
+    ) { \
+        {k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I}, \
+        {k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I}, \
+        {k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E, k3F, KC_NO,   KC_NO, KC_NO}, \
+        {k41, k42,   k43, KC_NO, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, KC_NO,   k4H, KC_NO}, \
+        {k51, k52,   k53, k54, k55, KC_NO, KC_NO, KC_NO, k59, KC_NO, KC_NO, KC_NO, k5D, k5E, k5F, k5G,   k5H, k5I} \
+    }
+
+    #define SPLIT_SHIFT_KEYMAP( \
+        k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I, \
+        k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I, \
+        k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E,      k3F, \
+        k41, k42,   k43,  k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E,     k4F, k4G,   k4H, \
+        k51, k52,   k53, k54, k55,              k59,                  k5D, k5E, k5F,   k5G, k5H, k5I \
+    ) { \
+        {k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I}, \
+        {k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I}, \
+        {k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E, k3F, KC_NO,   KC_NO, KC_NO}, \
+        {k41, k42,   k43, KC_NO, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, k4G,   k4H, KC_NO}, \
+        {k51, k52,   k53, k54, k55, KC_NO, KC_NO, KC_NO, k59, KC_NO, KC_NO, KC_NO, k5D, k5E, k5F, k5G,   k5H, k5I} \
+    }
+
+    #define ISO_KEYMAP( \
+        k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I, \
+        k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I, \
+        k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E, k3F,     \
+        k41, k42,   k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E,          k4F,   k4H, \
+        k51, k52,   k53, k54, k55,              k59,                  k5D, k5E, k5F,   k5G, k5H, k5I \
+    ) { \
+        {k11, k12,   k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G,   k1H, k1I}, \
+        {k21, k22,   k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, k2G,   k2H, k2I}, \
+        {k31, k32,   k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E, k3F, KC_NO,   KC_NO, KC_NO}, \
+        {k41, k42,   k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, KC_NO,   k4H, KC_NO}, \
+        {k51, k52,   k53, k54, k55, KC_NO, KC_NO, KC_NO, k59, KC_NO, KC_NO, KC_NO, k5D, k5E, k5F, k5G,   k5H, k5I} \
+    }
+
+#endif //LFK_REV_B
+
+#endif //LFK78_H

keyboards/lfkeyboards/lfk78/readme.md

@@ -0,0 +1,14 @@
+LFK78/68
+===
+
+A 65% keyboard similar to the MagicForce68 or VA68M. Optional fuction key block on left side.
+
+Keyboard Maintainer: [LFKeyboards](https://github.com/lfkeyboards)  
+Hardware Supported: LFK78/68 RevB - RevJ, SMK78/68  
+Hardware Availability: [LFKeyboards.com](https://www.lfkeyboards.com/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make lfkeyboards/lfk78:default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.

keyboards/lfkeyboards/lfk78/rules.mk

@@ -0,0 +1,34 @@
+# Set the LFK78 hardware version.
+#
+# B   - first public release, uses atmega32u4, has audio, ISSI matrix split between RGB and backlight
+# C-H - at90usb1286, no audio, ISSI device 0 is backlight, 4 is RGB
+# J   - at90usb646, C6 audio, ISSI device 0 is backlight, 4 is RGB
+LFK_REV = J
+
+ifeq ($(LFK_REV), B)
+    MCU = atmega32u4
+    OPT_DEFS += -DBOOTLOADER_SIZE=4096
+else ifeq ($(LFK_REV), J)
+    MCU = at90usb646
+    OPT_DEFS += -DBOOTLOADER_SIZE=4096
+else
+    MCU = at90usb1286
+    OPT_DEFS += -DBOOTLOADER_SIZE=8192
+endif
+OPT_DEFS += -DLFK_REV_$(LFK_REV)
+OPT_DEFS += -DLFK_REV_STRING=\"Rev$(LFK_REV)\"
+
+# Extra source files for IS3731 lighting
+SRC = TWIlib.c issi.c lighting.c
+
+# Processor frequency.
+F_CPU = 16000000
+
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT

keyboards/lfkeyboards/lfk87/config.h

@@ -0,0 +1,173 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    LFKeyboards
+#define PRODUCT         LFK87
+#define DESCRIPTION     QMK keyboard firmware for LFK87
+
+#define DIODE_DIRECTION COL2ROW
+
+
+#ifdef LFK_TKL_REV_A
+/* RevB Matrix config */
+    #define MATRIX_ROWS 6
+    #define MATRIX_COLS 17
+    #define MATRIX_ROW_PINS {D2, D3, D4, D5, D6, D7 }
+    #define MATRIX_COL_PINS {A0, A1, A2, A3, A4, A5, A6, A7, E6, E7,\
+                             F0, F1, F2, F3, C0, C1, C2 }
+    #define UNUSED_PINS {B0, B1, B2, B3, B4, B4, B5, B6, B7, C4, C5, C6, C7,\
+                         D0, D1, E0, E1, E2, E3, E4, F4, F5, F6, F7}
+    #define RGBLED_NUM 25     // Number of LEDs
+#else
+/* RevC/D Matrix config */
+    #define MATRIX_ROWS 7
+    #define MATRIX_COLS 16
+    #define MATRIX_ROW_PINS {F2, D7, D6, D5, D4, D3, F3}
+    #define MATRIX_COL_PINS {A0, A1, A2, A3, A4, A5, A6, A7, C7, C1, C0, E1, E0, C2, C3, C4}
+    #define UNUSED_PINS {B0, B1, B2, B3, B4, B4, B5, B6, B7, C5, C6, D2, E3, E4, E5, E6, E7, \
+                         F0, F1, F4, F5, F6, F7}
+    #define RGBLED_NUM 24     // Number of LEDs
+#endif
+
+#define AUDIO_VOICES
+#define C6_AUDIO
+
+#define BACKLIGHT_LEVELS 10
+#define BACKLIGHT_PWM_MAP {2, 4, 8, 16, 40, 55, 70, 128, 200, 255}
+
+#define RGB_DI_PIN F4  // Have to set it to something to get the ws2812 code to compile
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+#define TAPPING_TERM 200
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP1          H
+//#define MAGIC_KEY_HELP2          SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0_ALT1    ESC
+//#define MAGIC_KEY_LAYER0_ALT2    GRAVE
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     PAUSE
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif

keyboards/lfkeyboards/lfk87/keymaps/default/config.h

@@ -0,0 +1,8 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+// place overrides here
+
+#endif

keyboards/lfkeyboards/lfk87/keymaps/default/keymap.c

@@ -0,0 +1,133 @@
+#include "lfk87.h"
+#include "issi.h"
+#include "lighting.h"
+#include "action_layer.h"
+
+//Define a shorter 'transparent' key code to make the keymaps more compact
+#define KC_TR KC_TRNS
+
+enum keymap_layout {
+    VANILLA = 0,  // matches MF68 layout
+    FUNC,         // 0x08
+    SETTINGS,     // 0x10
+};
+
+// Colors of the layer indicator LED
+// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
+const Layer_Info layer_info[] = {
+    // Layer     Mask           Red     Green   Blue
+    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
+    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
+    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
+    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
+};
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[VANILLA] = KEYMAP(
+    /* Keymap VANILLA: (Base Layer) Default Layer
+    * ,-----------------------------------------------------------------------------.
+    * |Esc  |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12|  |Prnt|ScLk|Paus|
+    * |-----------------------------------------------------------|  |--------------|
+    * | ~ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |  0| - | = |Backsp |  | Ins|Home|PgUp|
+    * |-----------------------------------------------------------|  |--------------|
+    * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|    \|  | Del| End|PgDn|
+    * |-----------------------------------------------------------|  `--------------'
+    * |CAPS   |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |
+    * |-----------------------------------------------------------|        ,----.
+    * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift     |        | Up |
+    * |-----------------------------------------------------------|   ,-------------.
+    * |Ctrl|Gui |Alt |      Space            |ALT |GUI |Func|CTRL |   |Lft| Dn |Rig |
+    * `-----------------------------------------------------------'   `-------------'
+    */
+    KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_PSCR, KC_SLCK, KC_PAUS, \
+    KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSPC, KC_INS, KC_HOME, KC_PGUP, \
+    KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS, KC_DELETE, KC_END, KC_PGDN, \
+    KC_CAPS, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT,  \
+    KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, KC_UP, \
+    KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT, KC_RGUI, MO(FUNC), KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT),
+    /* Keymap FUNCTION: Function Layer
+    * ,-------------------------------------------------------------.  ,--------------.
+    * |Esc  |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12  |  |Prnt|ScLk|Paus|
+    * |-------------------------------------------------------------|  |--------------|
+    * | ` |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|Delete   |  |    |    |    |
+    * |-------------------------------------------------------------|  |--------------|
+    * |Tab  |   |PgU|   |   |   |   |   | Up|   |   |   |   |       |  |    |    |    |
+    * |-------------------------------------------------------------|  `--------------'
+    * |Control|Hme|PgD|End|   |   |   |Lft|Dwn|Rgt|   |   |         |
+    * |-------------------------------------------------------------|       ,----.
+    * |Shift   |   |Del|   |   |   |   |Mute|V- |V+ |  |TG(SETTINGS)|       | Up |
+    * |-------------------------------------------------------------'   ,-------------.
+    * |Func|Win |Alt |        PgD           |Alt |Ctrl |Func |          |Lft| Dn |Rig |
+    * `------------------------------------------------------'          `-------------'
+    */
+[FUNC] = KEYMAP(
+    KC_ESC, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,                        KC_PSCR, KC_SLCK, KC_PAUS, \
+    KC_TR,  KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,               KC_DEL,  KC_TR, KC_TR, KC_TR, \
+    KC_NO,KC_NO, KC_PGUP, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_UP, KC_NO, KC_NO, KC_NO, KC_NO,               KC_NO,   KC_TR, KC_TR, KC_TR, \
+    KC_TR, KC_HOME, KC_PGDN, KC_END, KC_NO, KC_NO, KC_NO, KC_LEFT, KC_DOWN, KC_RGHT, KC_NO, KC_NO,            KC_NO, \
+    KC_TR,    KC_NO,  KC_DEL,  KC_NO,  KC_NO, KC_NO, KC_NO, KC_MUTE, KC_VOLD, KC_VOLU, KC_NO,   TG(SETTINGS),                 KC_TR, \
+    KC_TR,  KC_TR, KC_TR,                  KC_PGDN,                           KC_TR, KC_TR, KC_TR,  KC_TR,            KC_TR,  KC_TR, KC_TR),
+
+    /* Keymap SETTINGS: Settings Layer
+    * ,-----------------------------------------------------------.     ,-------------.
+    * |Esc  |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12  |  |Prnt|ScLk|Paus|
+    * |-------------------------------------------------------------|  |--------------|
+    * |FN0 |   |   |   |   |   |   |   |   |  |   |BL-|BL+|BL Togl|    |RGB Tog |Val+|
+    * |-----------------------------------------------------------|    |-------------|
+    * |MuMode|   |   |   |   |   |   |   |   |   |   |   |  |LEDTst|    |RGB Mode|Val-|
+    * |-----------------------------------------------------------|    `-------------'
+    * |AudTgl |Hz+|MS+|   |   |   |   |   |   |   |   |   |  RST  |
+    * |-----------------------------------------------------------|      ,----.
+    * |ClickTgl|Hz-|MS-|   |   |   |   |   |   |   |   |Layer Clr |      |Hue+|
+    * |--------------------------------------------------------------------------.
+    * |    |    |    |                       |    |    |    |     | |Sat-|Hue-|Sat+|
+    * `----------------------------------------------------------------------------'
+    */
+[SETTINGS] = KEYMAP(
+    KC_FN0,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, BL_DEC,            KC_NO,   KC_NO,   KC_NO,
+    KC_FN0,KC_NO,KC_NO,KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, BL_DEC, BL_INC, BL_TOGG,  RGB_TOG, RGB_VAI, KC_NO,
+    MU_MOD,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,    KC_FN2,  RGB_MOD, RGB_VAD, KC_NO,
+    AU_TOG, KC_F1,KC_FN3, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,            RESET,
+    KC_FN5, KC_FN2,KC_FN4, KC_NO, KC_NO, KC_NO, KC_NO, MU_TOG, KC_NO, KC_NO, KC_NO,                 KC_NO,           RGB_HUI,
+    KC_NO, KC_NO, KC_NO,                  KC_FN12,                           KC_NO, KC_NO, KC_NO, KC_TR,     RGB_SAD, RGB_HUD, RGB_SAI),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    ACTION_FUNCTION(LFK_CLEAR),                               // FN0 - reset layers
+    ACTION_FUNCTION(LFK_CLICK_FREQ_HIGHER),                   // FN1 - Increase Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_FREQ_LOWER),                    // FN2 - Decrease Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_LONGER),                   // FN3 - Increase length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_SHORTER),                  // FN4 - Decrease length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TOGGLE),                        // FN5 - Toggle audio click
+  };
+
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+    // MACRODOWN only works in this function
+    switch(id) {
+    }
+    return MACRO_NONE;
+};
+
+
+void matrix_init_user(void) {
+    // This keymap only has a single base layer, so reset the default if needed
+    if(eeconfig_read_default_layer() > 1){
+        eeconfig_update_default_layer(1);
+        default_layer_set(1);
+    }
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}

keyboards/lfkeyboards/lfk87/keymaps/default/rules.mk

@@ -0,0 +1,54 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+
+BOOTMAGIC_ENABLE = no           # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
+CONSOLE_ENABLE = no             # Console for debug(+400)
+COMMAND_ENABLE = no             # Commands for debug and configuration
+NKRO_ENABLE = yes               # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = yes           # Enable keyboard backlight functionality
+MIDI_ENABLE = no                # MIDI controls
+AUDIO_ENABLE = yes              # Audio output on port C6
+UNICODE_ENABLE = no             # Unicode
+BLUETOOTH_ENABLE = no           # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = yes           # Enable RGB underlight
+RGBLIGHT_CUSTOM_DRIVER = yes    # RGB code is implemented in lefkeyboards, not WS2812
+SLEEP_LED_ENABLE = yes          # Breathing sleep LED during USB suspend
+TAP_DANCE_ENABLE = no
+
+ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
+WATCHDOG_ENABLE = no		# Resets keyboard if matrix_scan isn't run every 250ms
+
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
+
+ifeq ($(strip $(ISSI_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DISSI_ENABLE
+endif
+
+ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
+endif
+
+
+# Override the LFK87 hardware version.
+#
+# A - Green PCB. at90usb1286 Only 3 exist
+# B - We don't talk about RevB
+# C-D - Black PCB. at90usb646 First public release
+#
+# LFK_REV = C
+
+# ifeq ($(LFK_REV), A)
+# 	MCU = at90usb1286
+# 	OPT_DEFS += -DBOOTLOADER_SIZE=8192
+# else
+# 	MCU = at90usb646
+# 	OPT_DEFS += -DBOOTLOADER_SIZE=4096
+# endif
+# OPT_DEFS += -DLFK_TKL_REV_$(LFK_REV)

keyboards/lfkeyboards/lfk87/keymaps/iso/config.h

@@ -0,0 +1,8 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+// place overrides here
+
+#endif

keyboards/lfkeyboards/lfk87/keymaps/iso/keymap.c

@@ -0,0 +1,137 @@
+#include "lfk87.h"
+#include "issi.h"
+#include "lighting.h"
+#include "action_layer.h"
+
+//Define a shorter 'transparent' key code to make the keymaps more compact
+#define KC_TR KC_TRNS
+
+enum keymap_layout {
+    VANILLA = 0,
+    FUNC,         // 0x02
+    SETTINGS,     // 0x04
+};
+
+// Colors of the layer indicator LED
+// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
+const Layer_Info layer_info[] = {
+  // Layer     Mask         Red   Green Blue
+  {0x00000000, 0xFFFFFFFF, {0x00, 0x00, 0x00}}, // base layer - off
+  {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0x7F}}, // function layer - blue
+  {0x00000004, 0xFFFFFFFC, {0x7F, 0x00, 0x00}}, // settings layer - red
+  {0xFFFFFFFF, 0xFFFFFFFF, {0x0F, 0x0F, 0x0F}}, // unknown layer - REQUIRED - white
+};
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[VANILLA] = ISO_KEYMAP(
+    /* Keymap VANILLA: (Base Layer) Default Layer
+    * ,-----------------------------------------------------------------------------.
+    * |Esc  |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12|  |Prnt|ScLk|Paus|
+    * |-----------------------------------------------------------|  |--------------|
+    * | ~ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |  0| - | = |Backsp |  | Ins|Home|PgUp|
+    * |-----------------------------------------------------------|  |--------------|
+    * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  Ret|  | Del| End|PgDn|
+    * |--------------------------------------------------------.  |  `--------------'
+    * |CAPS   |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|  # |  |
+    * |-----------------------------------------------------------|        ,----.
+    * |Shft| \ |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift     |        | Up |
+    * |-----------------------------------------------------------|   ,-------------.
+    * |Ctrl|Gui |Alt |      Space            |ALT |GUI | Func|CTRL|   |Lft| Dn |Rig |
+    * `-----------------------------------------------------------'   `-------------'
+    */
+    KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_PSCR, KC_LSCR, KC_PAUS, \
+    KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSPC, KC_INS, KC_HOME, KC_PGUP, \
+    KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_ENT, KC_DELETE, KC_END, KC_PGDN, \
+    KC_LCAP, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_NUHS,  \
+    KC_LSFT, KC_NUBS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, KC_UP, \
+    KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT, KC_RGUI, MO(FUNC), KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT),
+  /* Keymap FUNCTION: Function Layer
+   * ,-------------------------------------------------------------.  ,--------------.
+   * |     |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12  |  |Prnt|ScLk|Paus|
+   * |-------------------------------------------------------------|  |--------------|
+   * |   |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|Delete   |  |    |    |    |
+   * |-------------------------------------------------------------|  |--------------|
+   * |Tab  |   |PgU|   |   |   |   |   | Up|   |   |   |   |   |   |  |    |    |    |
+   * |---------------------------------------------------------.   |  `--------------'
+   * |Control|Hme|PgD|End|   |   |   |Lft|Dwn|Rgt|   |   |     |   |
+   * |-------------------------------------------------------------|       ,----.
+   * |Shift|  |   |Del|   |   |   |   |Mute|V- |V+ |  |TG(SETTINGS)|       | Up |
+   * |-------------------------------------------------------------'   ,-------------.
+   * |Func|Win |Alt |         PgD             |ALT |GUI | Func|CTRL|   |Lft| Dn |Rig |
+   * `-------------------------------------------------------------'   `-------------'
+   */
+[FUNC] = ISO_KEYMAP(
+   KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,                        KC_PSCR, KC_SLCK, KC_PAUS, \
+   KC_TR,  KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,               KC_DEL,  KC_TR, KC_TR, KC_TR, \
+   KC_NO,KC_NO, KC_PGUP, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_UP, KC_NO, KC_NO, KC_NO, KC_NO,               KC_NO,   KC_TR, KC_TR, KC_TR, \
+   KC_TR, KC_HOME, KC_PGDN, KC_END, KC_NO, KC_NO, KC_NO, KC_LEFT, KC_DOWN, KC_RGHT, KC_NO, KC_NO,            KC_NO, \
+   KC_TR,KC_NO, KC_NO,  KC_DEL,  KC_NO,  KC_NO, KC_NO, KC_NO, KC_MUTE, KC_VOLD, KC_VOLU, KC_NO,   TG(SETTINGS),                 KC_TR, \
+   KC_TR,  KC_TR, KC_TR,                  KC_PGDN,                           KC_TR, KC_TR, KC_TR,  KC_TR,            KC_TR,  KC_TR, KC_TR),
+
+   /* Keymap SETTINGS: Settings Layer
+    * ,-----------------------------------------------------------.     ,-------------.
+    * |Esc  |f1| f2| f3| f4|  | f5| f6| f7| f8|   | f9|f10|f11|f12  |  |Prnt|ScLk|Paus|
+    * |-------------------------------------------------------------|  |--------------|
+    * |FN3 |BL0|BL1|BL2|BL3|   |   |   |   |  |   |BL-|BL+|BL Togl|    |RGB Tog |Val+|
+    * |-----------------------------------------------------------|    |-------------|
+    * |Debug|   |   |   |   |   |   |   |   |   |   |   |   | RST |    |RGB Mode|Val-|
+    * |--------------------------------------------------------.  |    `-------------'
+    * |LayrClr|Hz+|MS+|   |   |   |   |   |   |   |   |   |    |  |
+    * |-----------------------------------------------------------|  ,----.
+    * |ClickTgl|Hz-|MS-|   |   |   |   |   |   |   |   |Layer Clr |  |Hue+|
+    * |------------------------------------------------------------------------.
+    * |    |    |    |                             |    |    |  |  |Sat-|Hue-|Sat+|
+    * `------------------------------------------------------'  `--------------'
+    */
+[SETTINGS] = ISO_KEYMAP(
+  KC_NO,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, BL_DEC,            KC_NO,   KC_NO,   KC_NO,
+  KC_FN0,KC_FN3,KC_FN4,KC_FN5, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, BL_DEC, BL_INC, BL_TOGG,  RGB_TOG, RGB_VAI, KC_NO,
+  MU_MOD,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,     RESET,  RGB_MOD, RGB_VAD, KC_NO,
+  AU_TOG,  KC_FN3,KC_FN5, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,            KC_NO,
+  KC_FN7, KC_NO, KC_FN4, KC_FN6, KC_NO, KC_NO, KC_NO, KC_NO, MU_TOG, KC_NO, KC_NO, KC_NO,             KC_FN0,           RGB_HUI,
+  KC_NO, KC_NO, KC_NO,                  KC_NO,                           KC_NO, KC_NO, KC_NO, KC_FN0,     RGB_SAD, RGB_HUD, RGB_SAI),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    ACTION_FUNCTION(LFK_CLEAR),                               // FN0 - reset layers
+    ACTION_FUNCTION(LFK_ESC_TILDE),                           // FN1 - esc+shift = ~, else escape
+    ACTION_FUNCTION(LFK_LED_TEST),                            // FN2 - cycle through LEDs for testing
+    ACTION_FUNCTION(LFK_CLICK_FREQ_HIGHER),                   // FN3 - Increase Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_FREQ_LOWER),                    // FN4 - Decrease Freq of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_LONGER),                   // FN5 - Increase length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TIME_SHORTER),                  // FN6 - Decrease length of audio click
+    ACTION_FUNCTION(LFK_CLICK_TOGGLE),                        // FN7 - Toggle audio click
+    ACTION_FUNCTION(LFK_LED_TEST),                            // FN8 - cycle through LEDs for testing
+    ACTION_FUNCTION(LFK_DEBUG_SETTINGS),                      // FN9 - prints LED and click settings to HID
+  };
+
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+      switch(id) {
+      }
+    return MACRO_NONE;
+};
+
+
+void matrix_init_user(void) {
+    // This keymap only has a single base layer, so reset the default if needed
+    if(eeconfig_read_default_layer() > 1){
+        eeconfig_update_default_layer(1);
+        default_layer_set(1);
+    }
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}

keyboards/lfkeyboards/lfk87/keymaps/iso/rules.mk

@@ -0,0 +1,53 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+
+BOOTMAGIC_ENABLE = no           # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
+CONSOLE_ENABLE = no             # Console for debug(+400)
+COMMAND_ENABLE = no             # Commands for debug and configuration
+NKRO_ENABLE = yes               # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
+MIDI_ENABLE = no                # MIDI controls
+AUDIO_ENABLE = yes              # Audio output on port C6
+UNICODE_ENABLE = no             # Unicode
+BLUETOOTH_ENABLE = no           # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = yes           # Enable RGB underlight
+RGBLIGHT_CUSTOM_DRIVER = yes    # RGB code is implemented in lefkeyboards, not WS2812
+SLEEP_LED_ENABLE = yes          # Breathing sleep LED during USB suspend
+TAP_DANCE_ENABLE = no
+
+ISSI_ENABLE = yes               # If the I2C pullup resistors aren't install this must be disabled
+WATCHDOG_ENABLE = no           # Resets keyboard if matrix_scan isn't run every 250ms
+
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
+
+ifeq ($(strip $(ISSI_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DISSI_ENABLE
+endif
+
+ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
+endif
+
+
+# # Set the LFK78 hardware version. This is defined in rules.mk, but can be overidden here if desired
+# #
+# # RevB - first public release, uses atmega32u4, has audio, ISSI matrix split between RGB and backlight
+# # RevC/D - at90usb1286, no audio, ISSI device 0 is backlight, 4 is RGB
+# #
+# # Set to B, C or D
+# LFK_REV = D
+
+# ifeq ($(LFK_REV), B)
+# 	MCU = atmega32u4
+# else
+# 	MCU = at90usb1286
+# endif
+# OPT_DEFS += -DLFK_REV_$(LFK_REV)
+# OPT_DEFS += -DUSB_PRODUCT=\"LFK_Rev$(LFK_REV)\"

keyboards/lfkeyboards/lfk87/lfk87.c

@@ -0,0 +1,215 @@
+
+#include <avr/sfr_defs.h>
+#include <avr/timer_avr.h>
+#include <avr/wdt.h>
+#include "lfk87.h"
+#include "keymap.h"
+#include "issi.h"
+#include "TWIlib.h"
+#include "lighting.h"
+#include "debug.h"
+#include "quantum.h"
+
+uint16_t click_hz = CLICK_HZ;
+uint16_t click_time = CLICK_MS;
+uint8_t click_toggle = CLICK_ENABLED;
+
+void matrix_init_kb(void)
+{
+    // put your keyboard start-up code here
+    // runs once when the firmware starts up
+    matrix_init_user();
+    set_rgb(31, 0x00, 0x00, 0x00);  // Caps lock
+    set_rgb(32, 0xFF, 0x00, 0x00);  // Layer indicator, start red
+#ifndef AUDIO_ENABLE
+    // If we're not using the audio pin, drive it low
+    sbi(DDRC, 6);
+    cbi(PORTC, 6);
+#endif
+#ifdef ISSI_ENABLE
+    issi_init();
+#endif
+#ifdef WATCHDOG_ENABLE
+    // This is done after turning the layer LED red, if we're caught in a loop
+    // we should get a flashing red light
+    wdt_enable(WDTO_500MS);
+#endif
+}
+
+void matrix_scan_kb(void)
+{
+#ifdef WATCHDOG_ENABLE
+    wdt_reset();
+#endif
+#ifdef ISSI_ENABLE
+    // switch/underglow lighting update
+    static uint32_t issi_device = 0;
+    static uint32_t twi_last_ready = 0;
+    if(twi_last_ready > 1000){
+        // Its been way too long since the last ISSI update, reset the I2C bus and start again
+        twi_last_ready = 0;
+        TWIInit();
+        force_issi_refresh();
+    }
+    if(isTWIReady()){
+        twi_last_ready = 0;
+        // If the i2c bus is available, kick off the issi update, alternate between devices
+        update_issi(issi_device, issi_device);
+        if(issi_device){
+            issi_device = 0;
+        }else{
+            issi_device = 3;
+        }
+    }else{
+        twi_last_ready++;
+    }
+#endif
+    // Update layer indicator LED
+    //
+    // Not sure how else to reliably do this... TMK has the 'hook_layer_change'
+    // but can't find QMK equiv
+    static uint32_t layer_indicator = -1;
+    if(layer_indicator != layer_state){
+        for(uint32_t i=0;; i++){
+            // the layer_info list should end with layer 0xFFFF
+            // it will break this out of the loop and define the unknown layer color
+            if((layer_info[i].layer == (layer_state & layer_info[i].mask)) || (layer_info[i].layer == 0xFFFFFFFF)){
+                set_rgb(32, layer_info[i].color.red, layer_info[i].color.green, layer_info[i].color.blue);
+                layer_indicator = layer_state;
+                break;
+            }
+        }
+    }
+    matrix_scan_user();
+}
+
+void click(uint16_t freq, uint16_t duration){
+#ifdef AUDIO_ENABLE
+    if(freq >= 100 && freq <= 20000 && duration < 100){
+        play_note(freq, 10);
+        for (uint16_t i = 0; i < duration; i++){
+            _delay_ms(1);
+        }
+        stop_all_notes();
+    }
+#endif
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t* record)
+{
+    if (click_toggle && record->event.pressed){
+        click(click_hz, click_time);
+    }
+    if (keycode == RESET) {
+        reset_keyboard_kb();
+    } else {
+    }
+    return process_record_user(keycode, record);
+}
+
+void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
+{
+#ifdef AUDIO_ENABLE
+    int8_t sign = 1;
+#endif
+    if(id == LFK_ESC_TILDE){
+        // Send ~ on shift-esc
+        void (*method)(uint8_t) = (event->event.pressed) ? &add_key : &del_key;
+        uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+        method(shifted ? KC_GRAVE : KC_ESCAPE);
+        send_keyboard_report();
+    }else if(event->event.pressed){
+        switch(id){
+            case LFK_SET_DEFAULT_LAYER:
+                // set/save the current base layer to eeprom, falls through to LFK_CLEAR
+                eeconfig_update_default_layer(1UL << opt);
+                default_layer_set(1UL << opt);
+            case LFK_CLEAR:
+                // Go back to default layer
+                layer_clear();
+                break;
+#ifdef ISSI_ENABLE
+            case LFK_LED_TEST:
+                led_test();
+                break;
+#endif
+#ifdef AUDIO_ENABLE
+            case LFK_CLICK_FREQ_LOWER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_FREQ_HIGHER:
+                click_hz += sign * 100;
+                click(click_hz, click_time);
+                break;
+            case LFK_CLICK_TOGGLE:
+                if(click_toggle){
+                    click_toggle = 0;
+                    click(4000, 100);
+                    click(1000, 100);
+                }else{
+                    click_toggle = 1;
+                    click(1000, 100);
+                    click(4000, 100);
+                }
+                break;
+            case LFK_CLICK_TIME_SHORTER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_TIME_LONGER:
+                click_time += sign;
+                click(click_hz, click_time);
+                break;
+#endif
+        }
+    }
+}
+
+void reset_keyboard_kb(){
+#ifdef WATCHDOG_ENABLE
+    MCUSR = 0;
+    wdt_disable();
+    wdt_reset();
+#endif
+    set_rgb(31, 0x00, 0xFF, 0xFF);
+    set_rgb(32, 0x00, 0xFF, 0xFF);
+    force_issi_refresh();
+    reset_keyboard();
+}
+
+void led_set_kb(uint8_t usb_led)
+{
+    // Set capslock LED to Blue
+    if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
+        set_rgb(31, 0x00, 0x00, 0x7F);
+    }else{
+        set_rgb(31, 0x00, 0x00, 0x00);
+    }
+    led_set_user(usb_led);
+}
+
+// Lighting info, see lighting.h for details
+const uint8_t switch_matrices[] = {0, 1};
+const uint8_t rgb_matrices[] = {6, 7};
+
+// RGB Map:
+//   27  29  10   9   8   7   6
+// 26                                   5
+// 25                                   4
+// 24                                   3
+//   23  22  21  20  14  15  11   1   2
+const uint8_t rgb_sequence[] = {
+    27, 29, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 11, 15, 14, 20, 21, 22, 23, 24, 25, 26
+};
+
+// Maps switch LEDs from Row/Col to ISSI matrix.
+// Value breakdown:
+//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+//             |   | ISSI Col  |    ISSI Row   |
+//             /   |
+//             Device
+const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] =
+KEYMAP(
+  0x19, 0x18,   0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94,   0x93,   0x92, 0x91,
+  0x29, 0x28,    0x27,  0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3,   0xA2, 0xA1,
+  0x39, 0x38,      0x37,  0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5,     0xB3,
+  0x49, 0x48,    0x47,     0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5,          0xC4,   0xC2,
+  0x59, 0x58,   0x57,  0x56,  0x55,             0x51,                   0xD6, 0xE5, 0xE4,         0xE3, 0xE2, 0xE1,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);

keyboards/lfkeyboards/lfk87/lfk87.h

@@ -0,0 +1,139 @@
+#ifndef LFK87_H
+#define LFK87_H
+
+/* if the kb.h file exists (because we're running from qmkbuilder) include it */
+#if __has_include("kb.h")
+#include "kb.h"
+#endif
+
+#include "quantum.h"
+#include "matrix.h"
+#include <avr/sfr_defs.h>
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+
+typedef struct RGB_Color {
+    uint16_t red;
+    uint16_t green;
+    uint16_t blue;
+} RGB_Color;
+
+typedef struct Layer_Info {
+    uint32_t layer;
+    uint32_t mask;
+    RGB_Color color;
+} Layer_Info;
+
+extern const uint32_t layer_count;
+extern const Layer_Info layer_info[];
+
+enum action_functions {
+    LFK_CLEAR = 0,          // Resets all layers
+    LFK_ESC_TILDE,          // esc+lshift = ~
+    LFK_SET_DEFAULT_LAYER,  // changes and saves current base layer to eeprom
+    LFK_CLICK_TOGGLE,       // Adjusts click duration
+    LFK_CLICK_FREQ_HIGHER,  // Adjusts click frequency
+    LFK_CLICK_FREQ_LOWER,   // Adjusts click frequency
+    LFK_CLICK_TIME_LONGER,  // Adjusts click duration
+    LFK_CLICK_TIME_SHORTER, // Adjusts click duration
+    LFK_DEBUG_SETTINGS,     // prints LED and click settings to HID
+    LFK_LED_TEST,           // cycles through switch and RGB LEDs
+    LFK_PLAY_ONEUP
+};
+
+#define CLICK_HZ 500
+#define CLICK_MS 2
+#define CLICK_ENABLED 0
+
+void reset_keyboard_kb(void);
+void click(uint16_t freq, uint16_t duration);
+
+#define k00 KC_NO
+#ifdef LFK_TKL_REV_A
+    #ifndef KEYMAP
+        #define KEYMAP( \
+            k11,       k13, k14, k15, k16,    k17, k18, k19, k1a,     k1b, k1c, k1d, k1e,   k1f, k1g, k1h, \
+            k21,  k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d,        k2e,   k2f, k2g, k2h, \
+            k31,    k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d,      k3e,   k3f, k3g, k3h, \
+            k41,     k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c,          k4d, \
+            k51,      k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c,              k5d,        k5g, \
+            k61,   k62,   k63,                 k67,             k6b,   k6c,   k6d,   k6e,   k6f, k6g, k6h  \
+        ) \
+        { \
+            {k11, k00, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k1d, k1e, k1f, k1g, k1h}, \
+            {k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d, k2e, k2f, k2g, k2h}, \
+            {k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d, k3e, k3f, k3g, k3h}, \
+            {k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c, k4d, k00, k00, k00, k00}, \
+            {k51, k00, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c, k5d, k00, k00, k5g, k00}, \
+            {k61, k62, k63, k00, k00, k00, k67, k00, k00, k00, k6b, k6c, k6d, k6e, k6f, k6g, k6h}, \
+        }
+
+    #endif //!KEYMAP#endif
+    #ifndef ISO_KEYMAP
+        #define ISO_KEYMAP( \
+            k11,       k13, k14, k15, k16,    k17, k18, k19, k1a,     k1b, k1c, k1d, k1e,   k1f, k1g, k1h, \
+            k21,  k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d,        k2e,   k2f, k2g, k2h, \
+            k31,    k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d,      k3e,   k3f, k3g, k3h, \
+            k41,     k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c,          k4d, \
+            k51, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c,              k5d,        k5g, \
+            k61,   k62,   k63,                 k67,             k6b,   k6c,   k6d,   k6e,   k6f, k6g, k6h  \
+        ) \
+        { \
+            {k11, k00, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k1d, k1e, k1f, k1g, k1h}, \
+            {k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d, k2e, k2f, k2g, k2h}, \
+            {k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d, k3e, k3f, k3g, k3h}, \
+            {k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c, k4d, k00, k00, k00, k00}, \
+            {k51, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c, k5d, k00, k00, k5g, k00}, \
+            {k61, k62, k63, k00, k00, k00, k67, k00, k00, k00, k6b, k6c, k6d, k6e, k6f, k6g, k6h}, \
+        }
+    #endif //!ISO_KEYMAP
+#else  // RevC+ keymaps
+    #ifndef KEYMAP
+        #define KEYMAP( \
+            k71,      k11, k12, k13, k14,      k15, k16, k17, k18,      k19, k1a, k1b, k1c,   k1e, k1f, k1g, \
+            k72, k73, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b,           k2c,   k2e, k2f, k2g, \
+            k74,  k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c,          k3d,   k3e, k3f, k3g, \
+            k61,   k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b,              k4c, \
+            k62,    k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b,                  k5c,        k5f, \
+            k63,   k64,   k65,                 k67,               k6a,   k6b,   k6c,   k6d,   k6e, k6f, k6g  \
+        ) \
+        { \
+            {k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k00, k1e, k1f, k1g}, \
+            {k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k00, k2e, k2f, k2g}, \
+            {k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d, k3e, k3f, k3g}, \
+            {k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c, k00, k00, k00, k00}, \
+            {k00, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c, k00, k00, k5f, k00}, \
+            {k61, k62, k63, k64, k65, k00, k67, k00, k00, k6a, k6b, k6c, k6d, k6e, k6f, k6g}, \
+            {k71, k72, k73, k74, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00}, \
+        }
+
+    #endif //!KEYMAP#endif
+    #ifndef ISO_KEYMAP
+        #define ISO_KEYMAP( \
+            k71,      k11, k12, k13, k14,      k15, k16, k17, k18,      k19, k1a, k1b, k1c,   k1e, k1f, k1g, \
+            k72, k73, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b,           k2c,   k2e, k2f, k2g, \
+            k74,  k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c,          k3d,   k3e, k3f, k3g, \
+            k61,   k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b,              k4c, \
+            k62,  k51, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b,               k5c,        k5f, \
+            k63,   k64,   k65,                 k67,               k6a,   k6b,   k6c,   k6d,   k6e, k6f, k6g  \
+        ) \
+        { \
+            {k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k00, k1e, k1f, k1g}, \
+            {k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k00, k2e, k2f, k2g}, \
+            {k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d, k3e, k3f, k3g}, \
+            {k41, k42, k43, k44, k45, k46, k47, k48, k49, k4a, k4b, k4c, k00, k00, k00, k00}, \
+            {k51, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c, k00, k00, k5f, k00}, \
+            {k61, k62, k63, k64, k65, k00, k67, k00, k00, k6a, k6b, k6c, k6d, k6e, k6f, k6g}, \
+            {k71, k72, k73, k74, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00, k00}, \
+        }
+    #endif //!ISO_KEYMAP
+#endif //Rev
+
+#endif //LFK87_H

keyboards/lfkeyboards/lfk87/readme.md

@@ -0,0 +1,14 @@
+LFK87
+===
+
+A standard TKL with RGB underglow, in switch backlighting and audio support.
+
+Keyboard Maintainer: [LFKeyboards](https://github.com/lfkeyboards)  
+Hardware Supported: LFK87, SMK87  
+Hardware Availability: [LFKeyboards.com](https://www.lfkeyboards.com/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make lfkeyboards/lfk87:default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.

keyboards/lfkeyboards/lfk87/rules.mk

@@ -0,0 +1,31 @@
+# Set the LFK87 hardware version.
+#
+# A - Green PCB. at90usb1286 Only 3 exist
+# B - We don't talk about RevB
+# C-D - Black PCB. at90usb646 First public release
+#
+LFK_REV = C
+
+ifeq ($(LFK_REV), A)
+	MCU = at90usb1286
+	OPT_DEFS += -DBOOTLOADER_SIZE=8192
+else
+	MCU = at90usb646
+	OPT_DEFS += -DBOOTLOADER_SIZE=4096
+endif
+OPT_DEFS += -DLFK_TKL_REV_$(LFK_REV)
+
+# Extra source files for IS3731 lighting
+SRC = TWIlib.c issi.c lighting.c
+
+# Processor frequency.
+F_CPU = 16000000
+
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT

keyboards/lfkeyboards/lighting.c

@@ -0,0 +1,157 @@
+#ifdef ISSI_ENABLE
+
+
+#include <avr/sfr_defs.h>
+#include <avr/timer_avr.h>
+#include <avr/wdt.h>
+#include "quantum.h"
+// #include "lfk87.h"
+#include "issi.h"
+#include "TWIlib.h"
+#include "lighting.h"
+#include "debug.h"
+#include "rgblight.h"
+#include "audio/audio.h"
+
+
+extern rgblight_config_t rgblight_config; // Declared in rgblight.c
+
+const uint8_t backlight_pwm_map[BACKLIGHT_LEVELS] = BACKLIGHT_PWM_MAP;
+
+// RGB# to ISSI matrix, this is the same across all revisions
+const uint8_t rgb_leds[][3][2] = {
+        {{0, 0}, {0, 0}, {0, 0}},
+        {{1, 1}, {2, 3}, {2, 4}},   // RGB1/RGB17
+        {{2, 1}, {2, 2}, {3, 4}},   // RGB2/RGB18
+        {{3, 1}, {3, 2}, {3, 3}},   // RGB3/RGB19
+        {{4, 1}, {4, 2}, {4, 3}},   // RGB4/RGB20
+        {{5, 1}, {5, 2}, {5, 3}},   // RGB5/RGB21
+        {{6, 1}, {6, 2}, {6, 3}},   // RGB6/RGB22
+        {{7, 1}, {7, 2}, {7, 3}},   // RGB6/RGB23
+        {{8, 1}, {8, 2}, {8, 3}},   // RGB8/RGB24
+        {{1, 9}, {1, 8}, {1, 7}},   // RGB9/RGB25
+        {{2, 9}, {2, 8}, {2, 7}},   // RGB10/RGB26
+        {{3, 9}, {3, 8}, {3, 7}},   // RGB11/RGB27
+        {{4, 9}, {4, 8}, {4, 7}},   // RGB12/RGB28
+        {{5, 9}, {5, 8}, {5, 7}},   // RGB13/RGB29
+        {{6, 9}, {6, 8}, {6, 7}},   // RGB14/RGB30
+        {{7, 9}, {7, 8}, {6, 6}},   // RGB15/RGB31
+        {{8, 9}, {7, 7}, {7, 6}}    // RGB16/RGB32
+    };
+
+void set_rgb(uint8_t rgb_led, uint8_t red, uint8_t green, uint8_t blue){
+#ifdef RGBLIGHT_ENABLE
+    uint8_t matrix = rgb_matrices[0];
+    if(rgb_led >= 17){
+        matrix = rgb_matrices[1];
+        rgb_led -= 16;
+    }
+    if(rgb_leds[rgb_led][0][1] != 0){
+        activateLED(matrix, rgb_leds[rgb_led][0][0], rgb_leds[rgb_led][0][1], red);
+    }
+    if(rgb_leds[rgb_led][1][1] != 0){
+        activateLED(matrix, rgb_leds[rgb_led][1][0], rgb_leds[rgb_led][1][1], green);
+    }
+    if(rgb_leds[rgb_led][2][1] != 0){
+        activateLED(matrix, rgb_leds[rgb_led][2][0], rgb_leds[rgb_led][2][1], blue);
+    }
+#endif
+}
+
+void backlight_set(uint8_t level){
+#ifdef BACKLIGHT_ENABLE
+    uint8_t pwm_value = 0;
+    if(level >= BACKLIGHT_LEVELS){
+        level = BACKLIGHT_LEVELS;
+    }
+    if(level > 0){
+        pwm_value = backlight_pwm_map[level-1];
+    }
+    for(int x = 1; x <= 9; x++){
+        for(int y = 1; y <= 9; y++){
+            activateLED(switch_matrices[0], x, y, pwm_value);
+            activateLED(switch_matrices[1], x, y, pwm_value);
+        }
+    }
+#endif
+}
+
+void set_underglow(uint8_t red, uint8_t green, uint8_t blue){
+#ifdef RGBLIGHT_ENABLE
+    for(uint8_t x = 1; x <= 32; x++){
+        set_rgb(x, red, green, blue);
+    }
+#endif
+}
+
+
+void rgblight_set(void) {
+#ifdef RGBLIGHT_ENABLE
+    for(uint8_t i = 0; (i < sizeof(rgb_sequence)) && (i < RGBLED_NUM); i++){
+        if(rgblight_config.enable){
+            set_rgb(rgb_sequence[i], led[i].r, led[i].g, led[i].b);
+        }else{
+            set_rgb(rgb_sequence[i], 0, 0, 0);
+        }
+    }
+#endif
+}
+
+void set_backlight_by_keymap(uint8_t col, uint8_t row){
+#ifdef RGBLIGHT_ENABLE
+    uint8_t lookup_value = switch_leds[row][col];
+    uint8_t matrix = switch_matrices[0];
+    if(lookup_value & 0x80){
+        matrix = switch_matrices[1];
+    }
+    issi_devices[0]->led_dirty = 1;
+    uint8_t led_col = (lookup_value & 0x70) >> 4;
+    uint8_t led_row = lookup_value & 0x0F;
+    activateLED(matrix, led_col, led_row, 255);
+#endif
+}
+
+void force_issi_refresh(){
+#ifdef ISSI_ENABLE
+    issi_devices[0]->led_dirty = true;
+    update_issi(0, true);
+    issi_devices[3]->led_dirty = true;
+    update_issi(3, true);
+#endif
+}
+
+void led_test(){
+#ifdef ISSI_ENABLE
+#ifdef WATCHDOG_ENABLE
+    // This test take a long time to run, disable the WTD until its complete
+    wdt_disable();
+#endif
+    backlight_set(0);
+    set_underglow(0, 0, 0);
+    force_issi_refresh();
+    set_underglow(0, 0, 0);
+    for(uint8_t x = 0; x < sizeof(rgb_sequence); x++){
+        set_rgb(rgb_sequence[x], 255, 0, 0);
+        force_issi_refresh();
+        _delay_ms(250);
+        set_rgb(rgb_sequence[x], 0, 255, 0);
+        force_issi_refresh();
+        _delay_ms(250);
+        set_rgb(rgb_sequence[x], 0, 0, 255);
+        force_issi_refresh();
+        _delay_ms(250);
+        set_rgb(rgb_sequence[x], 0, 0, 0);
+        force_issi_refresh();
+    }
+#ifdef WATCHDOG_ENABLE
+    wdt_enable(WDTO_250MS);
+#endif
+#endif
+}
+
+void backlight_init_ports(void){
+    issi_init();
+}
+
+#endif
+

keyboards/lfkeyboards/lighting.h

@@ -0,0 +1,53 @@
+#ifndef LIGHTING_H
+#define LIGHTING_H
+
+
+// rgb_sequence[RGBLED_NUM]
+//
+// Array used for sequential lighting effects.
+//
+// Example LFK78 RevC+ RGB Map:
+//   27  29  10   9   8   7   6
+// 26                                   5
+// 25                                   4
+// 24                                   3
+//   23  22  21  20  14  15  11   1   2
+//
+// const uint8_t rgb_sequence[] = {
+//     27, 29, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,
+//     11, 15, 14, 20, 21, 22, 23, 24, 25, 26
+// };
+extern const uint8_t rgb_sequence[RGBLED_NUM];
+
+// switch_matrices[]
+//
+// The ISSI matrices for switch backlighting
+//
+// Example LFK78 RevC+ - ISSI Device 0, banks 0 and 1:
+// switch_matrices[] = {0, 1};
+extern const uint8_t switch_matrices[];
+
+// rgb_matrices[]
+// The ISSI matrices for RGB Underglow
+//
+// Example LFK78 RevC+ - ISSI Device 3, banks 0 and 1:
+// rgb_matrices[] = {6, 7};
+extern const uint8_t rgb_matrices[];
+
+// switch_leds[MATRIX_ROWS][MATRIX_COLS]
+// Maps switch LEDs from Row/Col to ISSI matrix.
+// Value breakdown:
+//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+//             |   | ISSI Col  |    ISSI Row   |
+//             |   |
+//             Device
+extern const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS];
+
+void led_test(void);
+void force_issi_refresh(void);
+void set_backlight(uint8_t level);
+void set_underglow(uint8_t red, uint8_t green, uint8_t blue);
+void set_rgb(uint8_t rgb_led, uint8_t red, uint8_t green, uint8_t blue);
+void set_backlight_by_keymap(uint8_t col, uint8_t row);
+
+#endif

keyboards/lfkeyboards/rules.mk

@@ -0,0 +1 @@
+SRC = TWIlib.c issi.c lighting.c

keyboards/lfkeyboards/smk65/config.h

@@ -0,0 +1,168 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6062
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    LFKeyboards
+#define PRODUCT         SMK65v2
+#define DESCRIPTION     QMK keyboard firmware for SMK65
+
+// RevA
+// #define DIODE_DIRECTION COL2ROW
+// #define MATRIX_ROWS 5
+// #define MATRIX_COLS 16
+// #define MATRIX_ROW_PINS {B7, F7, F6, F5, F4}
+// #define MATRIX_COL_PINS {F0, F1, D2, D3, D5, D4, D6, D7, B4, B5, B6, C7, B3, B2, B1, B0}
+// #define UNUSED_PINS {}
+
+// RevB
+#define DIODE_DIRECTION COL2ROW
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 16
+#define MATRIX_ROW_PINS {D6, D7, E0, C3, C4}
+#define MATRIX_COL_PINS {F2, C5, E5, E4, B7, B6, B5, B4, B3, B2, B1, B0, E1, C0, C1, C2}
+#define UNUSED_PINS {}
+#define RGBLED_NUM 20     // Number of LEDs
+
+//RevB only:
+
+#define AUDIO_VOICES
+#define C6_AUDIO
+// #define B5_AUDIO
+
+#define BACKLIGHT_LEVELS 8
+#define BACKLIGHT_PWM_MAP {8, 16, 40, 55, 70, 128, 200, 255}
+
+#define RGB_DI_PIN C7  // Have to set it to something to get the ws2812 code to compile
+#define RGBLED_NUM 20     // Number of LEDs
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP1          H
+//#define MAGIC_KEY_HELP2          SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0_ALT1    ESC
+//#define MAGIC_KEY_LAYER0_ALT2    GRAVE
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     PAUSE
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif

keyboards/lfkeyboards/smk65/keymaps/default/config.h

@@ -0,0 +1,8 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+// place overrides here
+
+#endif

keyboards/lfkeyboards/smk65/keymaps/default/keymap.c

@@ -0,0 +1,85 @@
+#include "smk65.h"
+#include "action_layer.h"
+
+//Define a shorter 'transparent' key code to make the keymaps more compact
+#define KC_TR KC_TRNS
+
+enum keymap_layout {
+    VANILLA = 0,
+    FUNC,
+    SETTINGS,
+};
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[VANILLA] = KEYMAP(
+  /* Keymap VANILLA: (Base Layer) Default Layer
+   * ,------------------------------------------------------------.----.
+   * |Esc~| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |  0| - | = |Backspa| Ins|
+   * |------------------------------------------------------------|----|
+   * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|     \| Del|
+   * |------------------------------------------------------------|----|
+   * |CAPS    |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |PgUp|
+   * |------------------------------------------------------------|----|
+   * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift  |Up |PgDn|
+   * |-----------------------------------------------------------------|
+   * |Ctrl|Win |Alt |       Space         |Alt |Ctrl|Func|Lft| Dn |Rig |
+   * `-----------------------------------------------------------------'
+   */
+    KC_GESC,KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL,   KC_BSPC,  KC_INS,
+    KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS,  KC_DEL,
+    KC_CAPS,  KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,      KC_ENT,  KC_PGUP,
+    KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT,   KC_UP,  KC_PGDN,
+    KC_LCTL, KC_LGUI, KC_LALT,         KC_SPC,       KC_RALT, KC_RCTL, MO(FUNC), KC_LEFT, KC_DOWN,  KC_RGHT),
+
+[FUNC] = KEYMAP(
+  /* Keymap VANILLA: Function Layer
+   * ,------------------------------------------------------------.----.
+   * |Esc~| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |  0| - | = |Backspa| Ins|
+   * |------------------------------------------------------------|----|
+   * |AudTgl| Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|     \| Del|
+   * |------------------------------------------------------------|----|
+   * |CAPS    |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |PgUp|
+   * |------------------------------------------------------------|----|
+   * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift  |Up |PgDn|
+   * |-----------------------------------------------------------------|
+   * |Ctrl|Win |Alt |       Space         |Alt |Ctrl|Func|Lft| Dn |Rig |
+   * `-----------------------------------------------------------------'
+   */
+    KC_GRV,KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_F13,  KC_F14,
+    AU_TOG, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,     KC_TR,  KC_TR,
+    KC_TR,  KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,           KC_TR,  KC_TR,
+    KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,            KC_TR,  KC_TR,
+    KC_TR, KC_TR, KC_TR,         KC_TR,       KC_TR, KC_TR, KC_TR, KC_TR, KC_TR,  KC_TR),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    ACTION_FUNCTION(LFK_CLEAR),                               // FN0 - reset layers
+    ACTION_FUNCTION(LFK_ESC_TILDE),                           // FN1 - esc+shift = ~, else escape
+  };
+
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+      switch(id) {
+      }
+    return MACRO_NONE;
+};
+
+
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}

keyboards/lfkeyboards/smk65/keymaps/default/rules.mk

@@ -0,0 +1,36 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+
+BOOTMAGIC_ENABLE = no           # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
+CONSOLE_ENABLE = no             # Console for debug(+400)
+COMMAND_ENABLE = no             # Commands for debug and configuration
+NKRO_ENABLE = yes               # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no           # Disable keyboard backlight functionality
+MIDI_ENABLE = no                # MIDI controls
+AUDIO_ENABLE = yes              # Audio output on port C6
+UNICODE_ENABLE = no             # Unicode
+BLUETOOTH_ENABLE = no           # Disable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = yes          	# Disable RGB underlight
+RGBLIGHT_CUSTOM_DRIVER = yes    # RGB code is implemented in lefkeyboards, not WS2812
+SLEEP_LED_ENABLE = no           # Breathing sleep LED during USB suspend
+TAP_DANCE_ENABLE = no
+
+ISSI_ENABLE = yes               # If the I2C pullup resistors aren't install this must be disabled
+WATCHDOG_ENABLE = no            # Resets keyboard if matrix_scan isn't run every 250ms
+
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
+
+ifeq ($(strip $(ISSI_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DISSI_ENABLE
+endif
+
+ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
+endif

keyboards/lfkeyboards/smk65/readme.md

@@ -0,0 +1,14 @@
+SMK65
+===
+
+65% layout based on Mat3o's Whitefox, but with support for SMK switches.
+
+Keyboard Maintainer: [LFKeyboards](https://github.com/lfkeyboards)  
+Hardware Supported: SMK65  
+Hardware Availability: [LFKeyboards.com](https://www.lfkeyboards.com/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make lfkeyboards/smk65:default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.

keyboards/lfkeyboards/smk65/rules.mk

@@ -0,0 +1,17 @@
+MCU = at90usb646
+OPT_DEFS += -DBOOTLOADER_SIZE=4096
+
+# Extra source files for IS3731 lighting
+SRC = TWIlib.c issi.c lighting.c
+
+# Processor frequency.
+F_CPU = 16000000
+
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT

keyboards/lfkeyboards/smk65/smk65.c

@@ -0,0 +1,164 @@
+#include <avr/sfr_defs.h>
+#include <avr/timer_avr.h>
+#include <avr/wdt.h>
+#include "smk65.h"
+#include "keymap.h"
+#include "debug.h"
+#include "issi.h"
+#include "TWIlib.h"
+#include "lighting.h"
+
+uint16_t click_hz = CLICK_HZ;
+uint16_t click_time = CLICK_MS;
+uint8_t click_toggle = CLICK_ENABLED;
+
+
+void matrix_init_kb(void)
+{
+    matrix_init_user();
+
+#ifdef AUDIO_ENABLE
+    // audio_init() sets PB5 to output and drives it low, which breaks our matrix
+    // so reset PB5 to input
+    cbi(DDRB, 5);
+    sbi(PORTB, 5);
+#else
+    // If we're not using the audio pin, drive it low
+    sbi(DDRC, 6);
+    cbi(PORTC, 6);
+#endif
+
+#ifdef ISSI_ENABLE
+    issi_init();
+#endif
+}
+
+void matrix_scan_kb(void)
+{
+#ifdef WATCHDOG_ENABLE
+    wdt_reset();
+#endif
+    matrix_scan_user();
+}
+
+void click(uint16_t freq, uint16_t duration){
+#ifdef AUDIO_ENABLE
+    if(freq >= 100 && freq <= 20000 && duration < 100){
+        play_note(freq, 10);
+        for (uint16_t i = 0; i < duration; i++){
+            _delay_ms(1);
+        }
+        stop_all_notes();
+    }
+#endif
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t* record)
+{
+    // Test code that turns on the switch led for the key that is pressed
+    // set_backlight_by_keymap(record->event.key.col, record->event.key.row);
+    if (click_toggle && record->event.pressed){
+        click(click_hz, click_time);
+    }
+    if (keycode == RESET) {
+        reset_keyboard_kb();
+    } else {
+    }
+    return process_record_user(keycode, record);
+}
+
+void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
+{
+#ifdef AUDIO_ENABLE
+    int8_t sign = 1;
+#endif
+    if(id == LFK_ESC_TILDE){
+        // Send ~ on shift-esc
+        void (*method)(uint8_t) = (event->event.pressed) ? &add_key : &del_key;
+        uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+        method(shifted ? KC_GRAVE : KC_ESCAPE);
+        send_keyboard_report();
+    }else if(event->event.pressed){
+        switch(id){
+            case LFK_SET_DEFAULT_LAYER:
+                // set/save the current base layer to eeprom, falls through to LFK_CLEAR
+                eeconfig_update_default_layer(1UL << opt);
+                default_layer_set(1UL << opt);
+            case LFK_CLEAR:
+                // Go back to default layer
+                layer_clear();
+                break;
+#ifdef AUDIO_ENABLE
+            case LFK_CLICK_FREQ_LOWER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_FREQ_HIGHER:
+                click_hz += sign * 100;
+                click(click_hz, click_time);
+                break;
+            case LFK_CLICK_TOGGLE:
+                if(click_toggle){
+                    click_toggle = 0;
+                    click(4000, 100);
+                    click(1000, 100);
+                }else{
+                    click_toggle = 1;
+                    click(1000, 100);
+                    click(4000, 100);
+                }
+                break;
+            case LFK_CLICK_TIME_SHORTER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_TIME_LONGER:
+                click_time += sign;
+                click(click_hz, click_time);
+                break;
+#endif
+            case LFK_DEBUG_SETTINGS:
+                dprintf("Click:\n");
+                dprintf("  toggle: %d\n", click_toggle);
+                dprintf("  freq(hz): %d\n", click_hz);
+                dprintf("  duration(ms): %d\n", click_time);
+                break;
+        }
+    }
+}
+
+void reset_keyboard_kb(){
+#ifdef WATCHDOG_ENABLE
+    MCUSR = 0;
+    wdt_disable();
+    wdt_reset();
+#endif
+    reset_keyboard();
+}
+
+void led_set_kb(uint8_t usb_led)
+{
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+    led_set_user(usb_led);
+}
+
+// LFK lighting info
+const uint8_t switch_matrices[] = {0, 1};
+const uint8_t rgb_matrices[] = {6, 7};
+// const uint8_t rgb_sequence[] = {
+//     14, 24, 23, 22, 21, 20, 19, 18, 26, 25, 28, 29,
+//     30, 31, 32, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
+// };
+const uint8_t rgb_sequence[] = {
+    25, 28, 29,
+    30, 31, 32, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
+};
+// Maps switch LEDs from Row/Col to ISSI matrix.
+// Value breakdown:
+//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+//            /    \ ISSI Col  |    ISSI Row   |
+//          matrix idx
+// const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] =
+// KEYMAP(
+//   0x19, 0x18,   0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94,   0x93,   0x92, 0x91,
+//   0x29, 0x28,    0x27,  0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3,   0xA2, 0xA1,
+//   0x39, 0x38,      0x37,  0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5,     0xB3,
+//   0x49, 0x48,    0x47,     0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5,          0xC4,   0xC2,
+//   0x59, 0x58,   0x57,  0x56,  0x55,             0x51,                   0xD6, 0xE5, 0xE4,         0xE3, 0xE2, 0xE1);

keyboards/lfkeyboards/smk65/smk65.h

@@ -0,0 +1,90 @@
+#ifndef SMK65_H
+#define SMK65_H
+
+/* if the kb.h file exists (because we're running from qmkbuilder) include it */
+#ifdef __has_include
+#if __has_include("kb.h")
+#include "kb.h"
+#endif
+#endif
+
+#include "quantum.h"
+#include "matrix.h"
+#include <avr/sfr_defs.h>
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+
+typedef struct RGB_Color {
+    uint16_t red;
+    uint16_t green;
+    uint16_t blue;
+} RGB_Color;
+
+typedef struct Layer_Info {
+    uint32_t layer;
+    uint32_t mask;
+    RGB_Color color;
+} Layer_Info;
+
+extern const uint32_t layer_count;
+extern const Layer_Info layer_info[];
+
+enum action_functions {
+    LFK_CLEAR = 0,          // Resets all layers
+    LFK_ESC_TILDE,          // esc+lshift = ~
+    LFK_SET_DEFAULT_LAYER,  // changes and saves current base layer to eeprom
+    LFK_CLICK_TOGGLE,       // Adjusts click duration
+    LFK_CLICK_FREQ_HIGHER,  // Adjusts click frequency
+    LFK_CLICK_FREQ_LOWER,   // Adjusts click frequency
+    LFK_CLICK_TIME_LONGER,  // Adjusts click duration
+    LFK_CLICK_TIME_SHORTER, // Adjusts click duration
+    LFK_DEBUG_SETTINGS,     // prints LED and click settings to HID
+    LFK_LED_TEST            // cycles through switch and RGB LEDs
+};
+
+#define CLICK_HZ 500
+#define CLICK_MS 2
+#define CLICK_ENABLED 0
+
+void reset_keyboard_kb(void);
+void click(uint16_t freq, uint16_t duration);
+
+/* Vanilla Keymap */
+// This a shortcut to help you visually see your layout.
+/*
+* ,-------------------------------------------------------------------------------.
+* | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 1A | 1B | 1C | 1D |   1E    | 1G |
+* |-------------------------------------------------------------------------------|
+* | 21   | 22 |23 | 24 | 25 | 26 | 27 | 28 | 29 | 2A | 2B | 2C | 2D |   2F   | 2G |
+* |-------------------------------------------------------------------------------|
+* | 31    | 32 |33 | 34 | 35 | 36 | 37 | 38 | 39 | 3A | 3B | 3C |      3F    | 3G |
+* |-------------------------------------------------------------------------------|
+* | 41      | 42 |43 | 45 | 46 | 47 | 48 | 49 | 4A | 4B | 4C |    4D    | 4F | 4G |
+* |-------------------------------------------------------------------------------|
+* | 51  |  52  | 53  |              57        | 5A | 5B | 5C | 5D |  5E | 3E | 4E |
+* `-------------------------------------------------------------------------------'
+*/
+// The first section contains all of the arguements
+// The second converts the arguments into a two-dimensional array
+#define KEYMAP( \
+    k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D,         k1F, k1G, \
+    k21,   k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D,       k2F, k2G, \
+    k31,    k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C,           k3F, k3G, \
+    k41,     k43, k44,  k45, k46, k47, k48, k49, k4A, k4B, k4C,         k4D, k4F, k4G, \
+    k51, k52, k53,              k57,                      k5B, k5C, k5D, k5E, k3E, k4E \
+) { \
+    {k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, KC_NO, k1F, k1G}, \
+    {k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, KC_NO, k2F, k2G}, \
+    {k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, KC_NO, k3E, k3F, k3G}, \
+    {k41, KC_NO, k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, k4G}, \
+    {k51, k52, k53, KC_NO, KC_NO, KC_NO, k57, KC_NO, KC_NO, KC_NO, k5B, k5C, k5D, k5E, KC_NO, KC_NO}, \
+}
+
+#endif //SMK65_H