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Move button handling to own timer for better performance

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This commit is contained in:
Thammi 2013-09-05 01:18:57 +02:00
parent 2fd8b26abe
commit 4cfd1d1494
1 changed files with 12 additions and 12 deletions
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24
firmware/lib/hal.c
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@ -14,8 +14,8 @@ static volatile int16_t wait_time = 0;
static uint16_t button_count[2]; static uint16_t button_count[2];
static uint8_t button_pressed[2]; static uint8_t button_pressed[2];
// major interrupt for button handling, every 5ms // interrupt for button handling, every 5ms
inline static void major_interrupt(void) { ISR(TIMER2_COMPA_vect) {
uint8_t i = 0; uint8_t i = 0;
for(i = 0; i < 2; ++i) { for(i = 0; i < 2; ++i) {
@ -48,15 +48,6 @@ ISR(TIMER0_COMPA_vect) {
PORTD ^= 1 << 2; PORTD ^= 1 << 2;
} }
// call button handling less often
++int_skip;
if(int_skip >= 64 * 5) {
int_skip = 0;
major_interrupt();
}
// tell wait_ms() that 1/38 ms has passed // tell wait_ms() that 1/38 ms has passed
--wait_time; --wait_time;
@ -68,7 +59,7 @@ void init_hw(void) {
CLKPR = 0b10000000; CLKPR = 0b10000000;
CLKPR = 0b00000000; CLKPR = 0b00000000;
// initialize timer // IR timer
TIMSK0 |= (1 << OCIE0A); TIMSK0 |= (1 << OCIE0A);
@ -78,6 +69,15 @@ void init_hw(void) {
TCCR0A = (1 << WGM01); TCCR0A = (1 << WGM01);
TCCR0B = (1 << CS00); TCCR0B = (1 << CS00);
// button timer
TIMSK2 |= (1 << OCIE2A);
OCR2A = 35;
TCCR2A = (1 << WGM01);
TCCR2B = (1 << CS22) | (1 << CS21) | (1 << CS20);
// activate interrupts // activate interrupts
sei(); sei();