From bceffdefcac30dd8b08ec3b803af372cbf254a7b Mon Sep 17 00:00:00 2001 From: MakotoKurauchi Date: Mon, 29 Jan 2018 02:14:12 +0900 Subject: Add helix keyboard (#2308) * Fork from Let's Split * Organizing files * Delete some keymaps * I2C and serial enabled at the same time * Change readme * add #define HELIX_ROWS for multiple rows * Delete avrdude flashing script * Delete makefiles * Subproject elimination * Fix lufa path * Remove PLAY_NOTE_ARRAY usages to get rid of warning. Fix conflicting function name * Mousekey change default to off * Fix to oled display adjust * make rev2 change pin assign change keymap * use master_buffer * Timing adjustment * Organizing files * Change Keymap * Change Keymap Add EISU and KANA Correct 4rows * NKRO default to disable * EXTRAKEY_ENABLE default to disable * add rgb reset key * rgb custom function enable * Extend font * add RGBLED_POWER default folder to helix/rev2 RGB_ENABLE to no * renamed directory * Disable RGBLIGHT_CUSTOM_DRIVER * Disable LOCKING_SUPPORT_ENABLE * Update bootloader setting * Change readme * Fixed argument error --- keyboards/helix/i2c.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 keyboards/helix/i2c.h (limited to 'keyboards/helix/i2c.h') diff --git a/keyboards/helix/i2c.h b/keyboards/helix/i2c.h new file mode 100644 index 000000000..c15b6bc50 --- /dev/null +++ b/keyboards/helix/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 v1.2.3-24-g4f1b