mirror of https://github.com/qmk/qmk_firmware
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
#include "ez.h"
|
|
#include "i2cmaster.h"
|
|
|
|
bool i2c_initialized = 0;
|
|
uint8_t mcp23018_status = 0x20;
|
|
|
|
void matrix_init_kb(void) {
|
|
// keyboard LEDs (see "PWM on ports OC1(A|B|C)" in "teensy-2-0.md")
|
|
TCCR1A = 0b10101001; // set and configure fast PWM
|
|
TCCR1B = 0b00001001; // set and configure fast PWM
|
|
|
|
// (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-ip enabled
|
|
DDRC &= ~(1<<7);
|
|
DDRD &= ~(1<<7 | 1<<5 | 1<<4);
|
|
DDRE &= ~(1<<6);
|
|
PORTC |= (1<<7);
|
|
PORTD |= (1<<7 | 1<<5 | 1<<4);
|
|
PORTE |= (1<<6);
|
|
|
|
ergodox_blink_all_leds();
|
|
|
|
matrix_init_user();
|
|
}
|
|
|
|
void ergodox_blink_all_leds(void)
|
|
{
|
|
ergodox_led_all_off();
|
|
ergodox_led_all_set(LED_BRIGHTNESS_HI);
|
|
ergodox_right_led_1_on();
|
|
_delay_ms(50);
|
|
ergodox_right_led_2_on();
|
|
_delay_ms(50);
|
|
ergodox_right_led_3_on();
|
|
_delay_ms(50);
|
|
ergodox_right_led_1_off();
|
|
_delay_ms(50);
|
|
ergodox_right_led_2_off();
|
|
_delay_ms(50);
|
|
ergodox_right_led_3_off();
|
|
//ergodox_led_all_on();
|
|
//_delay_ms(333);
|
|
ergodox_led_all_off();
|
|
}
|
|
|
|
uint8_t init_mcp23018(void) {
|
|
mcp23018_status = 0x20;
|
|
|
|
// I2C subsystem
|
|
if (i2c_initialized == 0) {
|
|
i2c_init(); // on pins D(1,0)
|
|
i2c_initialized++;
|
|
_delay_ms(1000);
|
|
}
|
|
|
|
// set pin direction
|
|
// - unused : input : 1
|
|
// - input : input : 1
|
|
// - driving : output : 0
|
|
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
|
|
i2c_stop();
|
|
|
|
// set pull-up
|
|
// - unused : on : 1
|
|
// - input : on : 1
|
|
// - driving : off : 0
|
|
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
|
|
|
|
out:
|
|
i2c_stop();
|
|
|
|
return mcp23018_status;
|
|
}
|
|
|
|
|