void gpio_ir_recv_handler(uint32_t id, uint32_t event) {
uint32_t current_timestamp;
IRSendRev *pIR;
pIR = (IRSendRev *)id;
gpio_irq_disable((gpio_irq_t *)(pIR->pGpioIrqRecv));
current_timestamp = micros();
switch(pIR->rcvstate) {
case STATE_IDLE:
if ((pIR->recv_wait_int) == IRQ_LOW) {
pIR->rcvstate = STATE_MARK;
pIR->prev_timestamp = current_timestamp;
}
break;
case STATE_MARK:
if ((pIR->recv_wait_int) == IRQ_HIGH) {
// mark transition to space
pIR->recv_buf[(pIR->recv_len)++] = current_timestamp - (pIR->prev_timestamp);
pIR->prev_timestamp = current_timestamp;
pIR->rcvstate = STATE_SPACE;
gtimer_reload((gtimer_t *)(pIR->pTimerRecv), GAP);
gtimer_start((gtimer_t *)(pIR->pTimerRecv));
}
break;
case STATE_SPACE:
if ((pIR->recv_wait_int) == IRQ_LOW) {
// space transition to mark
gtimer_stop((gtimer_t *)(pIR->pTimerRecv));
pIR->recv_buf[(pIR->recv_len)++] = current_timestamp - (pIR->prev_timestamp);
pIR->prev_timestamp = current_timestamp;
pIR->rcvstate = STATE_MARK;
}
break;
case STATE_STOP:
break;
}
if ((pIR->recv_wait_int) == IRQ_LOW )
{
// Change to listen to high level event
(pIR->recv_wait_int) = IRQ_HIGH;
gpio_irq_set((gpio_irq_t *)(pIR->pGpioIrqRecv), (gpio_irq_event)IRQ_HIGH, 1);
gpio_irq_enable((gpio_irq_t *)(pIR->pGpioIrqRecv));
}
else if ((pIR->recv_wait_int) == IRQ_HIGH)
{
// Change to listen to low level event
(pIR->recv_wait_int) = IRQ_LOW;
gpio_irq_set((gpio_irq_t *)(pIR->pGpioIrqRecv), (gpio_irq_event)IRQ_LOW, 1);
gpio_irq_enable((gpio_irq_t *)(pIR->pGpioIrqRecv));
}
}
void IRSendRev::Init(int revPin) {
gpio_irq_init((gpio_irq_t *)pGpioIrqRecv, (PinName)(g_APinDescription[revPin].pinname), (gpio_irq_handler)gpio_ir_recv_handler, (uint32_t)this);
gpio_irq_set((gpio_irq_t *)pGpioIrqRecv, (gpio_irq_event)IRQ_LOW, 1);
gpio_irq_enable((gpio_irq_t *)pGpioIrqRecv);
gtimer_init((gtimer_t *)pTimerRecv, TIMER4);
gtimer_start_one_shout((gtimer_t *)pTimerRecv, GAP, (void *)ir_recv_timer_handler, (uint32_t)this);
gtimer_stop((gtimer_t *)pTimerRecv);
Clear();
}
static void rtc_set_time(uint32_t year, uint8_t mon, uint8_t mday, uint8_t wday,
uint8_t hour, uint8_t min, uint8_t sec)
{
int i;
gtimer_stop(&sw_rtc);
rtc_timeinfo.tm_sec = sec;
rtc_timeinfo.tm_min = min;
rtc_timeinfo.tm_hour = hour;
rtc_timeinfo.tm_mday = mday-1;
rtc_timeinfo.tm_wday = wday-1;
rtc_timeinfo.tm_yday = 0;
for (i=0;i<(mon-1);i++) {
rtc_timeinfo.tm_yday += days_in_month(i,year);
}
rtc_timeinfo.tm_yday += (mday-1);
rtc_timeinfo.tm_mon = mon-1;
rtc_timeinfo.tm_year = year;
gtimer_start(&sw_rtc);
}
static void gtimer_timeout_handler (uint32_t tid)
{
gtimer_t *obj = (gtimer_t *)tid;
gtimer_irq_handler handler;
u8 timer_id = obj->hal_gtimer_adp.TimerId;
if (obj->handler != NULL) {
handler = (gtimer_irq_handler)obj->handler;
handler(obj->hid);
}
if (!obj->is_periodcal) {
gtimer_stop(obj);
}
if(timer_id < 2) {
// Timer0 | Timer1: clear ISR here
// Timer 2~7 ISR will be cleared in HAL
HalTimerClearIsr(timer_id);
}
}
static void rtc_deinit(void)
{
gtimer_stop(&sw_rtc);
gtimer_deinit(&sw_rtc);
}