qmk_firmware/keyboards/vitamins_included/i2c.h
Mikkel Jeppesen 19a85015c2 [Keyboard] Added Vitamins Included Rev2 (#6593)
* Fixed pin for RGB

* Added support for second revision of vitamins included

* Added rev2 config and switched to #pragma once

* Switch to quantum.h pincontrol

* Fixed left-half check

* Moved revision agnostic code to main header file

* Moved common build options to main makefile

* Referred to rev2 documentation

* JTAG is dissabled in keyboard.c now

* moved EEHANDS to rev1 config

* moved rev2 to use split_common

* Updated default keymaps

* Changed handedness ifdef to allow user-overrides

* Add some space saving defines

* Changed to more sane I2C clock

* Removed rev2 check in matrix.c as rev2 uses split_common

* Removed rev2 check in rev1 only code

* Update debounce constant name

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Switch KEYMAP macro to LAYOUT

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Switch kc_keymap macro to layout_kc

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Switch kc_keymap macro to layout_kc

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Add legacy layout macro alias

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/vitamins_included/rev2/config.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Split readme into revision specific versions

* Updated src to allow LTO

* Renamed readmes to lower-case

* Switched my keyboards to FEED VID

* Fixed markdown lint errors

* fixed readme links

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Maintain keymap backwards compatibility

Co-Authored-By: Joel Challis <git@zvecr.com>
2019-08-30 17:52:02 -07:00

50 lines
1.1 KiB
C

#ifndef I2C_H
#define I2C_H
#include <stdint.h>
#include "split_util.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 100000UL
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