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author | marksard <38324387+marksard@users.noreply.github.com> | 2019-04-04 14:56:22 +0900 |
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committer | Drashna Jaelre <drashna@live.com> | 2019-04-03 22:56:22 -0700 |
commit | debd902a3d5788beab8580a26c84d7db2365a638 (patch) | |
tree | 5d45358a2655fbbd2d5ecd5941a5fad61de5fd51 /keyboards/treadstone48/i2c.h | |
parent | 4f4fad83737546db6dd04af9e26320ef7d0610dd (diff) | |
download | qmk_firmware-debd902a3d5788beab8580a26c84d7db2365a638.tar.gz qmk_firmware-debd902a3d5788beab8580a26c84d7db2365a638.zip |
[Keyboard] add treeadstone48 (#5405)
* Keyboard: add treeadstone48
* rename layout defines
* Use of pragma once
* move common include code
* fixed info.json
* change keymap layout from kc to normal
* fix alpha revision keymap
* fixed info.json
* remove USE_Link_Time_Optimization
Diffstat (limited to 'keyboards/treadstone48/i2c.h')
-rw-r--r-- | keyboards/treadstone48/i2c.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/keyboards/treadstone48/i2c.h b/keyboards/treadstone48/i2c.h new file mode 100644 index 0000000000..710662c7ab --- /dev/null +++ b/keyboards/treadstone48/i2c.h @@ -0,0 +1,46 @@ +#pragma once + +#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 400kHz +#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(); |