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| author |  MakotoKurauchi <pluis@me.com> | 2018-01-29 02:14:12 +0900 |
|---|---|---|
| committer |  Jack Humbert <jack.humb@gmail.com> | 2018-01-28 12:14:12 -0500 |
| commit | bceffdefcac30dd8b08ec3b803af372cbf254a7b (patch) | |
| tree | 600173b95bdfc43a9efd75cdd3beec8b3577a4af /keyboards/helix/i2c.h | |
| parent | 86225ccc9b22f6b7b3cbbb9c5c578ea31f2214fa (diff) | |
| download | qmk_firmware-bceffdefcac30dd8b08ec3b803af372cbf254a7b.tar.gz | |
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
Diffstat (limited to 'keyboards/helix/i2c.h')
| -rw-r--r-- | keyboards/helix/i2c.h | 49 |
1 files changed, 49 insertions, 0 deletions
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 <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 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 |