diff options
| author | TerryMathews <terry@terrymathews.net> | 2019-02-10 15:44:39 -0500 |
|---|---|---|
| committer | Drashna Jaelre <drashna@live.com> | 2019-02-10 12:44:39 -0800 |
| commit | 6ba39689d3ed14a69f161cf08c48004eb4e0daea (patch) | |
| tree | 292128b96d278cdd2c15bc89547a6a4357d64c05 /keyboards/m0lly/i2c.h | |
| parent | 6848002601d9b84ed53639aadd035cc640de9aad (diff) | |
[Keyboard] Initial support for TKC M0LLY (#5087)
* Initial support for TKC M0LLY
* Remove depreciated Magic Keys define
* Update keyboards/m0lly/README.md
Co-Authored-By: TerryMathews <terry@terrymathews.net>
* Update keyboards/m0lly/README.md
Co-Authored-By: TerryMathews <terry@terrymathews.net>
* Update keyboards/m0lly/info.json
Co-Authored-By: TerryMathews <terry@terrymathews.net>
* Update keyboards/m0lly/info.json
Co-Authored-By: TerryMathews <terry@terrymathews.net>
* Update keyboards/m0lly/m0lly.h
Co-Authored-By: TerryMathews <terry@terrymathews.net>
* Suggested review changes
Diffstat (limited to 'keyboards/m0lly/i2c.h')
| -rw-r--r-- | keyboards/m0lly/i2c.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/keyboards/m0lly/i2c.h b/keyboards/m0lly/i2c.h new file mode 100644 index 0000000000..2bd7f40968 --- /dev/null +++ b/keyboards/m0lly/i2c.h @@ -0,0 +1,49 @@ +#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 800000L + +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); + + +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 |