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author | Kosuke Adachi <[email protected]> | 2018-06-09 07:28:28 +0900 |
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committer | Drashna Jaelre <[email protected]> | 2018-06-08 15:28:28 -0700 |
commit | 710937e4ef1e14d82261fc439aa6fcfcdbd64bf5 (patch) | |
tree | 6226a1d3027634af4b4508dce101ff938f356782 /keyboards/crkbd/i2c.h | |
parent | 300cf977c93b9b37a57643ddbfa8d0bd13b29e18 (diff) | |
download | qmk_firmware-710937e4ef1e14d82261fc439aa6fcfcdbd64bf5.tar.gz qmk_firmware-710937e4ef1e14d82261fc439aa6fcfcdbd64bf5.zip |
Add corne keyboard (#3119)
* Fork from helix
* Move rev2 to rev1
* Remove unused settings
* Move split_util to outof rev
* Setup KEYMAP for crkbd
* Remove old image
* Move keymaps directory and glcdfont.c
* Remove AUDIO in keymap
* Show keylog
* Show keylogs
* Show time log
* Remove EISU/KANA
* Use KEYMAP_kc
* Remove iota_gfx_record_user wrapping
* Remove unused settings for layer
* Add keylogger.c
* Fix uppercase letters to lower
* Add timelogger.c
* Default RGBLED_NUM = 27
* Remove unused setting
* Add mode icon reader
* Add matrix_write_ln
* Add layer_state_reader
* Move to lib directory
* Rename functions
* Add host_led_state_reader
* Add logo_reader
* Cleaning of iota_gfx_task
* Fix bugs and add key defines
* Remove unnecessary comments
* Update crkbd readme
* Move libs to lib directories
* Rename KEYMAP to LAYOUT
Diffstat (limited to 'keyboards/crkbd/i2c.h')
-rw-r--r-- | keyboards/crkbd/i2c.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/keyboards/crkbd/i2c.h b/keyboards/crkbd/i2c.h new file mode 100644 index 0000000000..c15b6bc506 --- /dev/null +++ b/keyboards/crkbd/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 |