qmk-firmware/quantum/split_common/i2c.h
That-Canadian 0fab3bbde3 Lets split eh (#3120)
* Line ending stuff again

* Added Let's Split Eh? Files and updated #USE_IC2 checks to also include th EH revision (can only be used in I2C)

* Added personal keymap, updated some of the EH files

* Created new keyboard file for testing "lets_split_eh" will merge into lets_split once fully functional

* Added split code from lets_split, removed pro micro imports and LED code

THIS IS WORKING CODE, WITHOUT RGB AND BACKLIGHT

* Took back original Lets Slit files for the lets_split keyboard, working in the lets_split_eh folder for now

* Updated eh.c

* More rework of the I2C code, added global flags for split boards.

* Introduced RGB over I2C, having weird edge case issues at the moment though

* Fixed weird I2C edgecase with RGB, although still would like to track down route cause..

* Changed RGB keycodes (static ones) to activate on key-up instead of key-down to elimate weird ghosting issue over I2C

* Lots of changes, mainly externalized the Split keyboard code and added logic for only including when needed.

- Added makefile option "SPLIT_KEYBOARD" that when = yes will include the split keyboard files and custom matrix
- Split keyboard files placed into quantum/split_common/
- Added define option for config files "SPLIT_HAND_PIN" FOr using high/low pin to determine handedness, low = right hand, high = left hand
- Cleaned up split logic for RGB and Backlight so it is only exectuted / included when needed

* Updated documentation for the new makefile options and #defines specific to split keyboards

* Added a bit more info to docs, so people aren't confused

* Modifed Let's Split to use externalized code, also added left and right hand eeprom files to the split_common folder

* Removed some debugging from eh.c

* Small changes to keyboard configs. Also added a default keymap (just a copy of my that_canadian keymap).

* Added a README file to the Let's Split Eh?

* Changed it so RGB static updates are done on key-up ONLY for split boards rather than all boards. Also fixed leftover un-used variable in rgblight.c

* Updated default keymap and my keymap for Let's Split Eh? Updated the comments so it reflects RGB control, and removed audio functions.

* Fixed lets_split_eh not having a default version

* Removed "eh" references from lets_split folder for now

* Took lets_split folder from master to fix travis build errors, weird my local was overriding.

* Changed LAYOUT_ortho_4x12_kc -> LAYOUT_kc_ortho_4x12 to match bakingpy and others

* Removed rules.mk from my lets_split keymap, not needed

* Updated the config_options doc to better explain the usage of "#define SPLIT_HAND_PIN"
2018-07-16 22:25:02 -04:00

61 lines
1.6 KiB
C

#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
// Address location defines (Keymap should be last, as it's size is dynamic)
#define I2C_BACKLIT_START 0x00
// Need 4 bytes for RGB (32 bit)
#define I2C_RGB_START 0x01
#define I2C_KEYMAP_START 0x06
// Slave buffer (8bit per)
// Rows per hand + backlit space + rgb space
// TODO : Make this dynamically sized
#define SLAVE_BUFFER_SIZE 0x20
// i2c SCL clock frequency
#define SCL_CLOCK 400000L
// Support 8bits right now (8 cols) will need to edit to take higher (code exists in delta split?)
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_write_data(void *const TXdata, uint8_t dataLen);
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