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Update c64_usb_mouse.ino

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Jarno Lehtinen 2017-08-09 00:59:27 +03:00 committed by GitHub
parent 88257b06ba
commit 826223f221
1 changed files with 9 additions and 10 deletions
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17
C64_1351_Mouse/c64_usb_mouse.ino
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@ -76,7 +76,7 @@ void setup() {
pinMode(POTSENSE, INPUT); // pullup off, hi-biased by OC1A pinMode(POTSENSE, INPUT); // pullup off, hi-biased by OC1A
TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable
TCCR1B = _BV(ICNC1) | _BV(CS10); TCCR1B = _BV(ICNC1) | _BV(CS10); //CS10: No prescaler, ICNC1: Input Capture Noise Canceller
} }
@ -90,7 +90,7 @@ void loop() {
(buttons & 002) ? pinMode(RBTN, OUTPUT) : pinMode(RBTN, INPUT); (buttons & 002) ? pinMode(RBTN, OUTPUT) : pinMode(RBTN, INPUT);
cli(); cli();
x = (320 + potmouse_xcounter)*16; x = (320 + potmouse_xcounter)*16; //16 clock cycles = 1us
y = (320 + potmouse_ycounter)*16; y = (320 + potmouse_ycounter)*16;
sei(); sei();
update = 0; update = 0;
@ -99,24 +99,23 @@ void loop() {
} }
ISR(TIMER1_CAPT_vect) { ISR(TIMER1_CAPT_vect) { // ICIE1
// OC1A/OC1B -> LOW // OC1A/OC1B -> LOW
TCCR1A = _BV(COM1A1) | _BV(COM1B1); // Clear OC1A / OC1B on Compare Match (Set output to low level) TCCR1A = _BV(COM1A1) | _BV(COM1B1); // Clear OC1A / OC1B on Compare Match (Set output to low level)
TCCR1C |= _BV(FOC1A) | _BV(FOC1B); // FOC1A / FOC1B Force Output Compare A and B (that are in register TCCR1C) TCCR1C |= _BV(FOC1A) | _BV(FOC1B); // FOC1A / FOC1B Force Output Compare A and B
// init the output compare values // init the output compare values
OCR1A = ICR1 + x; OCR1A = ICR1 + x; //ICR1: Input Capture Register
OCR1B = ICR1 + y; OCR1B = ICR1 + y;
TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(COM1B1) | _BV(COM1B0); // Set OC1A / OC1B on Compare Match (Set output to high level). TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(COM1B1) | _BV(COM1B0); // Set OC1A / OC1B on Compare Match (Set output to high level).
// OCIE1A: Timer/Counter Output Compare Match Interrupt Enable A, ISR(TIMER1_COMPA_vect) // disable ICIE1, Input Capture Interrupt TIMSK1 = _BV(OCIE1A); // OCIE1A: Timer/Counter Output Compare Match Interrupt Enable A // disable other TIMER1 interrupts
TIMSK1 = _BV(OCIE1A);
TIFR1 = 0xff; // Clear all pending TIMER1 interrupt flags TIFR1 = 0xff; // Clear all pending TIMER1 interrupt flags
} }
ISR(TIMER1_COMPA_vect) { ISR(TIMER1_COMPA_vect) { // OCIE1A
TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable // disable TIMER1 interrupts (Compare Match Interrupt A) TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable // disable other TIMER1 interrupts
TIFR1 = 0xff; // Clear all pending TIMER1 interrupt flags TIFR1 = 0xff; // Clear all pending TIMER1 interrupt flags
} }