uint8_t sdk_rtc_get_reset_reason(void) {
uint8_t reason;
reason = FIELD2VAL(RTC_RESET_REASON1_CODE, RTC.RESET_REASON1);
if (reason == 5) {
if (FIELD2VAL(RTC_RESET_REASON2_CODE, RTC.RESET_REASON2) == 1) {
reason = 6;
} else {
if (FIELD2VAL(RTC_RESET_REASON2_CODE, RTC.RESET_REASON2) != 8) {
reason = 0;
}
}
}
RTC.RESET_REASON0 &= ~RTC_RESET_REASON0_BIT21;
return reason;
}
void __attribute__((weak)) IRAM gpio_interrupt_handler(void *arg)
{
uint32_t status_reg = GPIO.STATUS;
GPIO.STATUS_CLEAR = status_reg;
uint8_t gpio_idx;
while ((gpio_idx = __builtin_ffs(status_reg)))
{
gpio_idx--;
status_reg &= ~BIT(gpio_idx);
if (FIELD2VAL(GPIO_CONF_INTTYPE, GPIO.CONF[gpio_idx])) {
gpio_interrupt_handler_t handler = gpio_interrupt_handlers[gpio_idx];
if (handler) {
handler(gpio_idx);
}
}
}
}
// generic interrupt handler called for all interrupt
void gpio_interrupt_handler() {
uint32 status_reg = GPIO.STATUS;
GPIO.STATUS_CLEAR = status_reg;
uint8_t pin;
while ((pin = __builtin_ffs(status_reg))) {
pin--;
status_reg &= ~BIT(pin);
if (FIELD2VAL(GPIO_CONF_INTTYPE, GPIO.CONF[pin])) {
uint32 ms = xTaskGetTickCountFromISR() * portTICK_RATE_MS;
// debounce check (from button.c example code)
//printf(" [interrupt %d] ", pin); fflush(stdout);
if (button_last[pin] < ms - 200) {
//printf(" [button %d pressed at %dms\r\n", pin, ms);
button_last[pin] = ms;
button_clicked[pin]++;
button_count[pin]++;
} else {
//printf(" [BOUNCE! %d at %dms]\r\n", pin, ms);
}
}
}
}
