c - ESP8266 GPIO 16 不能用作按钮

Question

我有以下代码，但看不到任何日志消息:

void gpio_int_cb(int pin, void *arg) {
    LOG(LL_INFO, ("button pushed"));
    (void) pin;
    (void) arg;
}

extern "C" enum mgos_app_init_result mgos_app_init(void) {

    int pin_button = 16;

    mgos_gpio_set_pull(pin_button, MGOS_GPIO_PULL_DOWN);
    mgos_gpio_set_mode(pin_button, MGOS_GPIO_MODE_INPUT);
    mgos_gpio_enable_int(pin_button);
    mgos_gpio_set_int_handler(pin_button, MGOS_GPIO_INT_EDGE_POS, gpio_int_cb, NULL);

}

我错过了什么吗？

Answer 1

ESP8266 GPIO16 无法配置中断。来自ESP8266 technical reference :

5. GPIO16 Related APIs Different from other IO interfaces, GPIO16(XPD_DCDC) belongs to the RTC module instead of the general GPIO module. It can be used to wake up the chip during deep-sleep; it can be configured to input or output mode; but it cannot trigger the IO interrupt.