mirror of
https://github.com/qmk/qmk_firmware
synced 2024-11-14 07:55:28 +00:00
32 lines
567 B
C
32 lines
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
|