myfreax / esp32-adc-button

Button component driven by ADC voltage sampling

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

• ESP32 ADC Component
• ESP32 Time Component

Usage

git submodule add [e-mail]: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