ESP32 ADC Button

Button component driver by ADC voltage sampling

Feature

Detect button press and release event and triger event callback
Allow Pass custom parameter to event callback function
Calculate button long press time and pass it to callback function
Pass button open and close state to callback function
Allow you group button by set group id
Automatically reset the state of other buttons in the current group
Combine button support. You can press one of button then press other button
Support press once triger event callback

Dependences

Usage

git submodule add git@github.com:myfreax/esp32-adc-button.git components/button_driver

#include "button_driver.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

void button_led_press(void* arg, int64_t time_us, bool state, uint32_t voltage) {}
void button_led_release(void* arg, int64_t time_us, bool state, uint32_t voltage) {}

void app_main(void) {
  static const char* TAG = "BUTTON-DRIVER";

  button_config_t* button_led = button_create(0, 1100, 1300, &button_led_press,
                                              &button_led_release, &custom_parameter);
  button_config_t* button_15 = button_create(1, 800, 1000, &button_15V_press,
                                              &button_15_release, NULL);
  button_config_t* button_12 = button_create(1, 300, 500, NULL,
                                              &button_12_release, &custom_parameter);

  button_config_t* buttons[3] = {button_12v, button_15v, button_24v,
                                 button_display, button_led};

  button_driver_config_t* button_driver_config = button_driver_config_create(
      buttons, sizeof(buttons) / sizeof(button_config_t*), ADC1_CHANNEL_0);

  button_driver_install(button_driver_config);

  while (1) {
    ESP_LOGI(TAG, "Main Thread Task");
    vTaskDelay(1000 / portTICK_PERIOD_MS);
  }
}

Example

The ESP32 Example Project demonstrates how to use IDF framework build application of reusable component