// 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);
+ DDRD &= ~(1<<5 | 1<<4);
DDRE &= ~(1<<6);
PORTC |= (1<<7);
- PORTD |= (1<<7 | 1<<5 | 1<<4);
+ PORTD |= (1<<5 | 1<<4);
PORTE |= (1<<6);
ergodox_blink_all_leds();
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++;
out:
i2c_stop();
+ // SREG=sreg_prev;
+
return mcp23018_status;
}