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| author | Christopher Browne <cbbrowne@ca.afilias.info> | 2016-07-07 17:13:22 +0200 |
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| committer | Christopher Browne <cbbrowne@ca.afilias.info> | 2016-07-07 17:13:22 +0200 |
| commit | 97dfbd1afce005392aa8f067e89bdf95334bdea5 (patch) | |
| tree | 1b198dd239bcb49564c31f124978abde0b467a81 /keyboards/lets_split/i2c.h | |
| parent | 2e1cfaf73fccdfaba2d7542f00bd7c3d49998d5d (diff) | |
| parent | ad43d450ca1b988d196da80e2a745f45f24068f6 (diff) | |
| download | qmk_firmware-97dfbd1afce005392aa8f067e89bdf95334bdea5.tar.gz qmk_firmware-97dfbd1afce005392aa8f067e89bdf95334bdea5.tar.xz | |
Merge branch 'master' of https://github.com/jackhumbert/qmk_firmware
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 |