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More convenient GPIO interrupt handlers

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This commit is contained in:
UncleRus 2016-11-30 00:58:24 +05:00
parent 53f85d0a2c
commit a61af52d96
4 changed files with 37 additions and 92 deletions
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31
core/esp_gpio.c
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@ -56,3 +56,34 @@ void gpio_set_pullup(uint8_t gpio_num, bool enabled, bool enabled_during_sleep)
iomux_set_pullup_flags(gpio_to_iomux(gpio_num), flags);
}
static gpio_interrupt_handler_t gpio_interrupt_handlers[16] = { 0 };
static void IRAM _gpio_intr_internal_handler(void)
{
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);
}
}
}
}
void gpio_set_interrupt(const uint8_t gpio_num, const gpio_inttype_t int_type, gpio_interrupt_handler_t handler)
{
gpio_interrupt_handlers[gpio_num] = handler;
GPIO.CONF[gpio_num] = SET_FIELD(GPIO.CONF[gpio_num], GPIO_CONF_INTTYPE, int_type);
if(int_type != GPIO_INTTYPE_NONE && handler) {
_xt_isr_attach(INUM_GPIO, _gpio_intr_internal_handler);
_xt_isr_unmask(1<<INUM_GPIO);
}
}