Changes to be committed:

new file:   keyboards/lets_splitv2/Makefile
	new file:   keyboards/lets_splitv2/config.h
	new file:   keyboards/lets_splitv2/i2c.c
	new file:   keyboards/lets_splitv2/i2c.h
	new file:   keyboards/lets_splitv2/imgs/split-keyboard-i2c-schematic.png
	new file:   keyboards/lets_splitv2/imgs/split-keyboard-serial-schematic.png
	new file:   keyboards/lets_splitv2/keymaps/default/keymap.c
	new file:   keyboards/lets_splitv2/lets_split.c
	new file:   keyboards/lets_splitv2/lets_split.h
	new file:   keyboards/lets_splitv2/matrix.c
	new file:   keyboards/lets_splitv2/pro_micro.h
	new file:   keyboards/lets_splitv2/readme.md
	new file:   keyboards/lets_splitv2/serial.c
	new file:   keyboards/lets_splitv2/serial.h
	new file:   keyboards/lets_splitv2/split_util.c
	new file:   keyboards/lets_splitv2/split_util.h
	new file:   keyboards/maxipad/Makefile
	new file:   keyboards/maxipad/config.h
	new file:   keyboards/maxipad/keymaps/default/Makefile
	new file:   keyboards/maxipad/keymaps/default/config.h
	new file:   keyboards/maxipad/keymaps/default/keymap.c
	new file:   keyboards/maxipad/keymaps/default/readme.md
	new file:   keyboards/maxipad/maxipad.c
	new file:   keyboards/maxipad/maxipad.h
	new file:   keyboards/maxipad/readme.md

keyboards/lets_splitv2/i2c.h

@@ -0,0 +1,31 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#define I2C_ACK 1
+#define I2C_NACK 0
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency
+#define SCL_CLOCK  100000L
+
+extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+void i2c_master_init(void);
+uint8_t i2c_master_start(uint8_t address);
+void i2c_master_stop(void);
+uint8_t i2c_master_write(uint8_t data);
+uint8_t i2c_master_read(int);
+void i2c_reset_state(void);
+void i2c_slave_init(uint8_t address);
+
+#endif