forked from mirrors/qmk_firmware
e9bd7d7ad3
* remove i2c_start and i2c_stop from i2c drivers * remove static i2c_address variable from chibios i2c driver
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include "georgi.h"
|
|
|
|
bool i2c_initialized = 0;
|
|
i2c_status_t mcp23018_status = 0x20;
|
|
|
|
void matrix_init_kb(void) {
|
|
steno_set_mode(STENO_MODE_GEMINI); // or STENO_MODE_BOLT
|
|
|
|
// (tied to Vcc for hardware convenience)
|
|
//DDRB &= ~(1<<4); // set B(4) as input
|
|
//PORTB &= ~(1<<4); // set B(4) internal pull-up disabled
|
|
|
|
// unused pins - C7, D4, D5, D7, E6
|
|
// set as input with internal pull-up enabled
|
|
DDRC &= ~(1<<7);
|
|
DDRD &= ~(1<<5 | 1<<4 | 1<<6 | 1<<7);
|
|
DDRE &= ~(1<<6);
|
|
PORTC |= (1<<7);
|
|
PORTD |= (1<<5 | 1<<4 | 1<<6 | 1<<7);
|
|
PORTE |= (1<<6);
|
|
|
|
matrix_init_user();
|
|
}
|
|
|
|
|
|
uint8_t init_mcp23018(void) {
|
|
print("starting init");
|
|
mcp23018_status = 0x20;
|
|
|
|
// I2C subsystem
|
|
|
|
// uint8_t sreg_prev;
|
|
// sreg_prev=SREG;
|
|
// cli();
|
|
|
|
if (i2c_initialized == 0) {
|
|
i2c_init(); // on pins D(1,0)
|
|
i2c_initialized = true;
|
|
_delay_ms(1000);
|
|
}
|
|
// i2c_init(); // on pins D(1,0)
|
|
// _delay_ms(1000);
|
|
|
|
// set pin direction
|
|
// - unused : input : 1
|
|
// - input : input : 1
|
|
// - driving : output : 0
|
|
uint8_t data[] = {0b10000000, 0b11111111};
|
|
mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, 2, ERGODOX_EZ_I2C_TIMEOUT);
|
|
|
|
if (!mcp23018_status) {
|
|
// set pull-up
|
|
// - unused : on : 1
|
|
// - input : on : 1
|
|
// - driving : off : 0
|
|
mcp23018_status = i2c_writeReg(I2C_ADDR, GPPUA, data, 2, ERGODOX_EZ_I2C_TIMEOUT);
|
|
}
|
|
|
|
// SREG=sreg_prev;
|
|
//uprintf("Init %x\n", mcp23018_status);
|
|
return mcp23018_status;
|
|
}
|