From 6ba39689d3ed14a69f161cf08c48004eb4e0daea Mon Sep 17 00:00:00 2001 From: TerryMathews Date: Sun, 10 Feb 2019 15:44:39 -0500 Subject: [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 * Update keyboards/m0lly/README.md Co-Authored-By: TerryMathews * Update keyboards/m0lly/info.json Co-Authored-By: TerryMathews * Update keyboards/m0lly/info.json Co-Authored-By: TerryMathews * Update keyboards/m0lly/m0lly.h Co-Authored-By: TerryMathews * Suggested review changes --- keyboards/m0lly/i2c.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 keyboards/m0lly/i2c.h (limited to 'keyboards/m0lly/i2c.h') diff --git a/keyboards/m0lly/i2c.h b/keyboards/m0lly/i2c.h new file mode 100644 index 000000000..2bd7f4096 --- /dev/null +++ b/keyboards/m0lly/i2c.h @@ -0,0 +1,49 @@ +#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 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 -- cgit v1.2.3-24-g4f1b