qmk_firmware/keyboards/lets_splitv2/i2c.h
climbalima 6e27f6fbde 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
2016-11-10 18:19:13 -05:00

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567 B
C

#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