mirror of
https://github.com/espressif/esp-idf.git
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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
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/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_check.h"
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#include "esp_sleep.h"
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#include "driver/gpio.h"
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/* Most development boards have "boot" button attached to GPIO0.
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* You can also change this to another pin.
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*/
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#if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2 || CONFIG_IDF_TARGET_ESP32H2
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#define BOOT_BUTTON_NUM 9
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#else
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#define BOOT_BUTTON_NUM 0
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#endif
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/* Use boot button as gpio input */
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#define GPIO_WAKEUP_NUM BOOT_BUTTON_NUM
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/* "Boot" button is active low */
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#define GPIO_WAKEUP_LEVEL 0
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static const char *TAG = "gpio_wakeup";
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void example_wait_gpio_inactive(void)
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{
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printf("Waiting for GPIO%d to go high...\n", GPIO_WAKEUP_NUM);
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while (gpio_get_level(GPIO_WAKEUP_NUM) == GPIO_WAKEUP_LEVEL) {
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vTaskDelay(pdMS_TO_TICKS(10));
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}
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}
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esp_err_t example_register_gpio_wakeup(void)
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{
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/* Initialize GPIO */
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gpio_config_t config = {
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.pin_bit_mask = BIT64(GPIO_WAKEUP_NUM),
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.mode = GPIO_MODE_INPUT,
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.pull_down_en = false,
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.pull_up_en = false,
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.intr_type = GPIO_INTR_DISABLE
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};
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ESP_RETURN_ON_ERROR(gpio_config(&config), TAG, "Initialize GPIO%d failed", GPIO_WAKEUP_NUM);
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/* Enable wake up from GPIO */
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ESP_RETURN_ON_ERROR(gpio_wakeup_enable(GPIO_WAKEUP_NUM, GPIO_WAKEUP_LEVEL == 0 ? GPIO_INTR_LOW_LEVEL : GPIO_INTR_HIGH_LEVEL),
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TAG, "Enable gpio wakeup failed");
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ESP_RETURN_ON_ERROR(esp_sleep_enable_gpio_wakeup(), TAG, "Configure gpio as wakeup source failed");
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/* Make sure the GPIO is inactive and it won't trigger wakeup immediately */
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example_wait_gpio_inactive();
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ESP_LOGI(TAG, "gpio wakeup source is ready");
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return ESP_OK;
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}
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