From d707738616c140f8d9c8eded7b64e5fc806f4b24 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Tue, 5 Jul 2016 23:27:10 -0400 Subject: i2c working --- keyboards/lets_split/i2c.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 keyboards/lets_split/i2c.h (limited to 'keyboards/lets_split/i2c.h') diff --git a/keyboards/lets_split/i2c.h b/keyboards/lets_split/i2c.h new file mode 100644 index 0000000000..08ce4b0093 --- /dev/null +++ b/keyboards/lets_split/i2c.h @@ -0,0 +1,31 @@ +#ifndef I2C_H +#define I2C_H + +#include + +#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 -- cgit v1.2.3