ESP32 ADC Button

Can be used not only for buttons driven via ADC, but also for other driving methods, depending on the sampling function you pass

Feature

Detect button press, long press and release event and triger event callback
Allow Pass custom parameter to event callback function
Pass button open and close state to callback function
Allow you grouping button by set grouping 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

Dependences

ESP32 Time Component

Usage

git submodule add git@github.com:myfreax/esp32-time.git components/datetime
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"
static uint32_t button_sampling_voltage(void* arg) {
  // your code ...
  return 1234;
}
static void light_long_press(void* arg, int64_t time_us, bool state, button_config_t* button) {}
static void light_release(void* arg, int64_t time_us, bool state, button_config_t* button) {}
// more ...

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

  // custom params pass button event callback  
  button_params_t button_params = {
      .screen = screen,
  };
  // configure ESP32 ADC
  adc_chan_t* button_adc =
      adc_chan_config(ADC_CHANNEL_0, ADC_BITWIDTH_DEFAULT, ADC_ATTEN_DB_12);

  // buttons
  button_config_t* power_button =
      button_create("power", 0, 100, 798, false, power_release,
                    power_press_once, power_long_press, 1.5, &button_params);
  button_config_t* light_button =
      button_create("light", 1, 799, 1349, false, light_release,
                    light_press_once, light_long_press, 1.5, &button_params);
  button_config_t* ac_button =
      button_create("AC", 2, 1350, 1869, false, ac_release, ac_press_once,
                    ac_long_press, 1.5, &button_params);
  button_config_t* standby_button = button_create(
      "standby", 3, 1870, 2139, false, standby_release, standby_press_once,
      standby_long_press, 1.5, &button_params);
  button_config_t* dc_button =
      button_create("DC", 4, 2140, 2250, false, dc_release, dc_press_once,
                    dc_long_press, 1.5, &button_params);

  button_config_t* buttons[] = {light_button, dc_button, power_button,
                                ac_button, standby_button};
  // create driver configuration params and pass buttons and sampling rate,
  // debounce time, sampling function and params of sampling function
  button_driver_config_t* button_driver_config = button_driver_config_create(
      buttons, sizeof(buttons) / sizeof(button_config_t*), 15, 30000,
      button_adc, button_sampling_voltage);

  button_driver_install(button_driver_config, 8192, 25);


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