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#include QMK_KEYBOARD_H
bool i2c_initialized = 0;
i2c_status_t mcp23018_status = 0x20;
void matrix_init_kb(void) {
// (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
mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(IODIRA, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); 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, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(GPPUA, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
out:
i2c_stop();
// SREG=sreg_prev;
//uprintf("Init %x\n", mcp23018_status);
return mcp23018_status;
}
const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
{ {0,0}, {0,7}, {2,7}, {3,7} },
{ {0,8}, {1,8}, {2,8}, {3,8} },
{ {0,9}, {1,9}, {2,9}, {3,9} },
{ {0,10}, {1,10}, {2,10}, {3,10} },
{ {0,11}, {1,11}, {2,11}, {3,11} },
{ {0,12}, {1,12}, {2,12}, {0,0} },
{ {0,13}, {1,13}, {2,13}, {0,0} },
{ {1,0}, {0,0}, {2,0}, {3,0} },
{ {0,1}, {1,1}, {2,1}, {3,1} },
{ {0,2}, {1,2}, {2,2}, {3,2} },
{ {0,3}, {1,3}, {2,3}, {3,3} },
{ {0,4}, {1,4}, {2,4}, {3,4} },
{ {0,5}, {1,5}, {2,5}, {3,5} },
{ {0,6}, {1,6}, {2,6}, {3,6} }
};
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