ESP32 Forum

Posted: **Sun Jan 19, 2025 11:09 am**

这个程序用GPIO25按键按下无法唤醒(按键按下低电平)

#include <stdio.h>
#include "driver/gpio.h"
#include <time.h>
#include <sys/time.h>
#include "sdkconfig.h"
#include "soc/soc_caps.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_sleep.h"
#include "esp_log.h"
#include "driver/rtc_io.h"
#include "nvs_flash.h"
#include "nvs.h"

#define DEFAULT_WAKEUP_PIN 25
#define DEFAULT_WAKEUP_LEVEL ESP_GPIO_WAKEUP_GPIO_LOW

void example_deep_sleep_register_gpio_wakeup(void)
{
const gpio_config_t config = {
.pin_bit_mask = BIT(DEFAULT_WAKEUP_PIN),
.mode = GPIO_MODE_INPUT,
.pull_up_en = 1,
.pull_down_en = 0

};

ESP_ERROR_CHECK(gpio_config(&config));
//esp_sleep_enable_ext1_wakeup(DEFAULT_WAKEUP_PIN, DEFAULT_WAKEUP_LEVEL);
esp_deep_sleep_enable_gpio_wakeup(BIT(DEFAULT_WAKEUP_PIN), DEFAULT_WAKEUP_LEVEL);
printf("Enabling GPIO wakeup on pins GPIO%d\n", DEFAULT_WAKEUP_PIN);
}

void app_main()
{
uint64_t wakeup_pin_mask = 0;
example_deep_sleep_register_gpio_wakeup();
//light_sleep_wakeup();
//rtc_gpio_isolate(GPIO_NUM_25);
printf("sleep\r\n");
vTaskDelay(500);
esp_deep_sleep_start();
//esp_light_sleep_start();
while(1)
{
printf("exit_sleep\r\n");
vTaskDelay(300);
}
}

Posted: **Mon Jan 20, 2025 1:40 pm**

确保按键电路正确，按下时 GPIO25 电平能够拉低到足够的低电平（接近 0V）。
如果板子上有上拉电阻，可能和软件配置冲突。建议只在软件中启用 pull_up_en。
修正后的代码：

Code: Select all

#include <stdio.h>
#include "driver/gpio.h"
#include "esp_sleep.h"
#include "driver/rtc_io.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

#define DEFAULT_WAKEUP_PIN GPIO_NUM_25
#define DEFAULT_WAKEUP_LEVEL ESP_GPIO_WAKEUP_GPIO_LOW

void example_deep_sleep_register_gpio_wakeup(void)
{
    // 配置 GPIO 为输入模式并启用 RTC 功能
    rtc_gpio_init(DEFAULT_WAKEUP_PIN);
    rtc_gpio_set_direction(DEFAULT_WAKEUP_PIN, RTC_GPIO_MODE_INPUT_ONLY);
    rtc_gpio_pulldown_dis(DEFAULT_WAKEUP_PIN);
    rtc_gpio_pullup_en(DEFAULT_WAKEUP_PIN);

    // 启用 GPIO 唤醒
    ESP_ERROR_CHECK(esp_deep_sleep_enable_gpio_wakeup(BIT(DEFAULT_WAKEUP_PIN), DEFAULT_WAKEUP_LEVEL));
    printf("Enabling GPIO wakeup on pins GPIO%d\n", DEFAULT_WAKEUP_PIN);
}

void app_main()
{
    printf("Configuring wakeup source...\n");
    example_deep_sleep_register_gpio_wakeup();

    printf("Entering deep sleep mode...\n");
    vTaskDelay(pdMS_TO_TICKS(100)); // 确保状态稳定
    esp_deep_sleep_start();

    while (1)
    {
        // 这里的代码不会执行，因为 MCU 进入了深度睡眠
        printf("Should not be here\n");
        vTaskDelay(pdMS_TO_TICKS(300));
    }
}

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