DevHeads IoT Integration Server•6mo ago

How to Implement OTA Updates for ESP32 with FreeRTOS on Google Cloud IoT Core?

@Middleware & OS Hello guys am interested in over the air (OTA) firmware update of an ESP32 microcontroller running FreeRTOS and connect it to Google Cloud IoT Core for data monitoring, please i would need any form of guidance i can get i.e code examples or documentation and suggested libraries that can aid me in OTA updates for ESP32 with FreeRTOS

Solution:

Your code should be identical or similar to 👇 ```cpp #include <WiFi.h> #include <PubSubClient.h> #include <ArduinoOTA.h>...

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5 Replies

Marvee Amasi•6mo ago

Hi @Boss lady HTTP and MQTT are popular protocols for OTA updates on an ESP32 , which are u leaning on to?

Boss lady•6mo ago

MQTT

Dtynin•6mo ago

@Boss lady Create an account on their official site, install necessary libraries like ArduinoOTA library, PubSubClient library, etc then configure the network by connecting your ESP32 to the wifi network using the Wi-Fi library, then you implement OTA firmware update functionality

Solution

Enthernet Code•6mo ago

Your code should be identical or similar to 👇

#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoOTA.h>

const char* ssid = "YOUR_WIFI_SSID";
const char* password = "YOUR_WIFI_PASSWORD";
const char* mqttServer = "mqtt.googleapis.com";
const char* mqttUsername = "unused";
const int mqttPort = 8883;
const char* devicePrivateKey = "YOUR_DEVICE_PRIVATE_KEY";

WiFiClientSecure wifiClient;
PubSubClient client(wifiClient);

void connectWiFi() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
  }
}

void connectMQTT() {
  client.setServer(mqttServer, mqttPort);
  client.setCallback(callback);
  while (!client.connected()) {
    if (client.connect("ESP32-device", mqttUsername, devicePrivateKey)) {
      client.subscribe("your_topic");
    } else {
      delay(1000);
    }
  }
}

void callback(char* topic, byte* payload, unsigned int length) {
  // Handle incoming MQTT messages here
}

void setup() {
  Serial.begin(115200);

  connectWiFi();

  ArduinoOTA.setHostname("ESP32-device");
  ArduinoOTA.setPassword("Your_OTA_Password");

  // Callbacks to handle OTA updates
  ArduinoOTA.onStart([]() {
    Serial.println("OTA update started...");
  });

  ArduinoOTA.onEnd([]() {
    Serial.println("\nOTA update complete!");
    ESP.restart();
  });

  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progress: %u%%\r", (progress / (total / 100)));

    // You can use progress/total to publish update progress to Google Cloud IoT Core
  });

  ArduinoOTA.begin();

  connectMQTT();
}

void loop() {
  ArduinoOTA.handle();

  if (!client.connected()) {
    connectMQTT();
  }
  client.loop();

  // Perform your regular tasks here

  delay(1000);
}

#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoOTA.h>

const char* ssid = "YOUR_WIFI_SSID";
const char* password = "YOUR_WIFI_PASSWORD";
const char* mqttServer = "mqtt.googleapis.com";
const char* mqttUsername = "unused";
const int mqttPort = 8883;
const char* devicePrivateKey = "YOUR_DEVICE_PRIVATE_KEY";

WiFiClientSecure wifiClient;
PubSubClient client(wifiClient);

void connectWiFi() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
  }
}

void connectMQTT() {
  client.setServer(mqttServer, mqttPort);
  client.setCallback(callback);
  while (!client.connected()) {
    if (client.connect("ESP32-device", mqttUsername, devicePrivateKey)) {
      client.subscribe("your_topic");
    } else {
      delay(1000);
    }
  }
}

void callback(char* topic, byte* payload, unsigned int length) {
  // Handle incoming MQTT messages here
}

void setup() {
  Serial.begin(115200);

  connectWiFi();

  ArduinoOTA.setHostname("ESP32-device");
  ArduinoOTA.setPassword("Your_OTA_Password");

  // Callbacks to handle OTA updates
  ArduinoOTA.onStart([]() {
    Serial.println("OTA update started...");
  });

  ArduinoOTA.onEnd([]() {
    Serial.println("\nOTA update complete!");
    ESP.restart();
  });

  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progress: %u%%\r", (progress / (total / 100)));

    // You can use progress/total to publish update progress to Google Cloud IoT Core
  });

  ArduinoOTA.begin();

  connectMQTT();
}

void loop() {
  ArduinoOTA.handle();

  if (!client.connected()) {
    connectMQTT();
  }
  client.loop();

  // Perform your regular tasks here

  delay(1000);
}

youcef_ali•6mo ago

Which frame works Arduino or esp-idf?

Gaming

Programming

How to Implement OTA Updates for ESP32 with FreeRTOS on Google Cloud IoT Core?