/* Timer compare ISR, for ADC reads */
ISR(TIMER1_COMPA_vect, ISR_BLOCK)
{
switch (currentState)
{
case STATE_X_READ:
currentX = getResult();
#ifdef DEBUG
phex16(currentX);
#endif
#if defined COORD && COORD == 'X'
setupX();
currentState = STATE_X_START;
move_mouse();
#else
setupY();
currentState = STATE_Y_START;
#endif
break;
case STATE_Y_START:
ADMUX = (1<< REFS0) | (1 << MUX0); //ADC1
ADCSRA = (1 << ADEN)|(1 << ADSC)|(1<< ADC_PRESCALER_64);
currentState = STATE_Y_READ;
break;
case STATE_Y_READ:
currentY = getResult();
#ifdef DEBUG
phex16(currentY); print("\t");
#endif
move_mouse();
#if defined COORD && COORD == 'Y'
setupY();
currentState = STATE_Y_START;
#else
setupX();
currentState = STATE_X_START;
#endif
break;
case STATE_X_START:
ADMUX = (1 << REFS0) | (1 << MUX2); //ADC4
ADCSRA = (1 << ADEN)|(1 << ADSC)|(1<< ADC_PRESCALER_64);
currentState = STATE_X_READ;
break;
}
}
void Touch::process()
{
switch (this->getCycle())
{
case 0: setupX(); break;
case 1: startX(); break;
case 2: setupY(); break;
case 3: startY(); break;
default: asm("nop");
}
}