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Performance enhancement for button handler (10ms)

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This commit is contained in:
Thammi 2013-09-05 01:27:52 +02:00
parent 951eef918a
commit f866f05e00
1 changed files with 5 additions and 6 deletions
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11
firmware/lib/hal.c
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@ -8,13 +8,12 @@
#include <pentabug/timer.h> #include <pentabug/timer.h>
static volatile uint8_t ir_active = 0; static volatile uint8_t ir_active = 0;
static uint16_t int_skip = 0;
static volatile int16_t wait_time = 0; static volatile int16_t wait_time = 0;
static uint16_t button_count[2]; static uint8_t button_count[2];
static uint8_t button_pressed[2]; static uint8_t button_pressed[2];
// interrupt for button handling, every 5ms // interrupt for button handling, every 10ms
ISR(TIMER2_COMPA_vect) { ISR(TIMER2_COMPA_vect) {
uint8_t i = 0; uint8_t i = 0;
@ -22,7 +21,7 @@ ISR(TIMER2_COMPA_vect) {
// button pressed? // button pressed?
if(PINB & (1 << i)) { if(PINB & (1 << i)) {
// pressed for more than 50ms is a click // pressed for more than 50ms is a click
if(button_count[i] > 10 && button_count[i] < 200) { if(button_count[i] > 5 && button_count[i] < 100) {
button_pressed[i] = 1; button_pressed[i] = 1;
} }
@ -34,7 +33,7 @@ ISR(TIMER2_COMPA_vect) {
} }
// 1s pressed, request next app // 1s pressed, request next app
if(button_count[i] == 200) { if(button_count[i] == 100) {
next_app(i ? 1 : -1); next_app(i ? 1 : -1);
} }
} }
@ -73,7 +72,7 @@ void init_hw(void) {
TIMSK2 |= (1 << OCIE2A); TIMSK2 |= (1 << OCIE2A);
OCR2A = 35; OCR2A = 70;
TCCR2A = (1 << WGM01); TCCR2A = (1 << WGM01);
TCCR2B = (1 << CS22) | (1 << CS21) | (1 << CS20); TCCR2B = (1 << CS22) | (1 << CS21) | (1 << CS20);