OTA Updater rev_12

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    - Project: OTA Updater
    - Source Code compiled for: Arduino Opta WiFi
    - Source Code created on: 2025-10-05 15:11:13

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Detect a debounced push-button event on A0 using */
    /* EasyButton; the input uses INPUT_PULLUP, so a */
    /* pressed state is LOW and should trigger the system */
    /* logic. Integrate flash over the air. */
/****** END SYSTEM REQUIREMENTS *****/



/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <EasyButton.h>  //https://github.com/evert-arias/EasyButton
#include <POTA.h>         //https://github.com/pleasedontcode/POTA

/****** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t button_PushButton_PIN_A0 = A0;

/****** GLOBAL VARIABLES *****/
POTA ota; // POTA OTA controller
EasyButton button(button_PushButton_PIN_A0); // Button attached to A0

volatile bool ota_update_requested = false;

// Forward declaration (not necessary, but kept for clarity)
void onOTARequest();

void onOTARequest()
{
  // Set a flag to perform OTA in the main loop
  ota_update_requested = true;
  Serial.println("OTA update requested via button press");
}

void setup()
{
  Serial.begin(115200);
  // Wait for Serial to be ready (optional on some boards)
  // while (!Serial) { ; }
  Serial.println();
  Serial.println("POTA OTA over-the-air demo with EasyButton on A0");

  // Initialize the button with INPUT_PULLUP
  pinMode(button_PushButton_PIN_A0, INPUT_PULLUP);
  button.begin();
  button.onPressed(onOTARequest);

  // Initialize POTA with empty credentials (placeholders).
  // Users should replace the empty strings with real secrets.
  POTAError err = ota.begin("", "", "", "", "", "");
  if (err != POTAError::SUCCESS)
  {
    Serial.print("POTA begin failed: ");
    Serial.println(ota.errorToString(err));
  }
  else
  {
    Serial.println("POTA initialized (placeholders)");
    // Optional: perform an initial OTA check
    err = ota.checkAndPerformOTA();
    if (err == POTAError::NO_UPDATE_AVAILABLE)
    {
      Serial.println("No OTA update available");
    }
    else if (err != POTAError::SUCCESS)
    {
      Serial.print("OTA check error: ");
      Serial.println(ota.errorToString(err));
    }
  }
}

void loop()
{
  // Process button state
  button.read();

  // If user requested an OTA check, perform it
  if (ota_update_requested)
  {
    ota_update_requested = false;
    POTAError err = ota.checkAndPerformOTA();
    if (err == POTAError::NO_UPDATE_AVAILABLE)
    {
      Serial.println("OTA: Firmware already up to date");
    }
    else if (err != POTAError::SUCCESS)
    {
      Serial.print("OTA error: ");
      Serial.println(ota.errorToString(err));
    }
  }
}

/* END CODE */