From b2ee290c9f506e42dd9c4577c8147646c405aeb0 Mon Sep 17 00:00:00 2001 From: Danny Date: Tue, 12 Feb 2019 19:57:24 -0500 Subject: [Keyboard] Move Keebio boards to own folder (#5109) * Move boards into keebio folder * Rename keymap * Update BDN9 files * Update BFO-9000 files * Update Chocopad files * Update Dilly files * Update Fourier files, collapse rev1 into main * Update Iris files * Update Laplace files * Update Levinson files, fix buswerks keymap * Update Nyquist files * Fix keymap issues * Update Quefrency files * Update Rorschach files * Update TF68 files * Update Viterbi files * Update Viterbi files * Update Wavelet files * Reformat default layout * Fix up default folder for Iris * Remove already defined aliases --- keyboards/keebio/bfo9000/i2c.h | 49 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 keyboards/keebio/bfo9000/i2c.h (limited to 'keyboards/keebio/bfo9000/i2c.h') diff --git a/keyboards/keebio/bfo9000/i2c.h b/keyboards/keebio/bfo9000/i2c.h new file mode 100644 index 0000000000..c15b6bc506 --- /dev/null +++ b/keyboards/keebio/bfo9000/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 400000L + +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