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| author | Jack Humbert <jack.humb@gmail.com> | 2016-07-06 05:27:10 +0200 |
|---|---|---|
| committer | Jack Humbert <jack.humb@gmail.com> | 2016-07-06 05:27:10 +0200 |
| commit | d707738616c140f8d9c8eded7b64e5fc806f4b24 (patch) | |
| tree | f8aaebebb526903bb49283aa9fa53242c4bf793b /keyboards/lets_split/i2c.h | |
| parent | 96f44e120295e677d21d3dbb9dc4bf642ba2af09 (diff) | |
| download | qmk_firmware-d707738616c140f8d9c8eded7b64e5fc806f4b24.tar.gz qmk_firmware-d707738616c140f8d9c8eded7b64e5fc806f4b24.tar.xz | |
i2c working
Diffstat (limited to 'keyboards/lets_split/i2c.h')
| -rw-r--r-- | keyboards/lets_split/i2c.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/keyboards/lets_split/i2c.h b/keyboards/lets_split/i2c.h new file mode 100644 index 000000000..08ce4b009 --- /dev/null +++ b/keyboards/lets_split/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 |