diff options
Diffstat (limited to 'keyboards/lets_split/i2c.h')
| -rw-r--r-- | keyboards/lets_split/i2c.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/keyboards/lets_split/i2c.h b/keyboards/lets_split/i2c.h index 08ce4b009..c15b6bc50 100644 --- a/keyboards/lets_split/i2c.h +++ b/keyboards/lets_split/i2c.h @@ -16,7 +16,7 @@ #define SLAVE_BUFFER_SIZE 0x10 // i2c SCL clock frequency -#define SCL_CLOCK 100000L +#define SCL_CLOCK 400000L extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE]; @@ -28,4 +28,22 @@ uint8_t i2c_master_read(int); void i2c_reset_state(void); void i2c_slave_init(uint8_t address); + +static inline unsigned char i2c_start_read(unsigned char addr) { + return i2c_master_start((addr << 1) | I2C_READ); +} + +static inline unsigned char i2c_start_write(unsigned char addr) { + return i2c_master_start((addr << 1) | I2C_WRITE); +} + +// from SSD1306 scrips +extern unsigned char i2c_rep_start(unsigned char addr); +extern void i2c_start_wait(unsigned char addr); +extern unsigned char i2c_readAck(void); +extern unsigned char i2c_readNak(void); +extern unsigned char i2c_read(unsigned char ack); + +#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak(); + #endif |