This tutorial describes how to use Internet OTA for Arduino Nano RP2040 Connect. OTA Updates are done over the Internet using the connection with Thinger.io.
Requirements
- Visual Studio Code (VSCode)
- PlatformIO extension on VSCode.
-
Thinger.io extension on VSCode. You will require a Token from your Thinger.io account with permissions for:
- ListDevices
- AccessDeviceResources
- ReadDeviceStatistics
Example for Arduino Nano RP2040 Connect
Create Project
In Visual Studio Code, create a new Platformio Project for Arduino Nano RP2040 Connect
Configure project
Modify platform.ini file to include thinger.io library and WiFiNINA for Internet connectivity:
[env:nanorp2040connect]
platform = raspberrypi
board = nanorp2040connect
framework = arduino
lib_deps =
WiFiNINA
thinger.io
Update source code
In your main.cpp file, set the default example:
#define THINGER_SERIAL_DEBUG
#include <ThingerMbed.h>
#include <ThingerMbedOTA.h>
#include "arduino_secrets.h"
ThingerMbed thing(USERNAME, DEVICE_ID, DEVICE_CREDENTIAL);
ThingerMbedOTA ota(thing);
// cannot connect? Update WiFiNiNA and add iot.thinger.io SSL Certificate
// https://support.arduino.cc/hc/en-us/articles/360016119219
void setup() {
// open serial for debugging
Serial.begin(115200);
// configure LED_BUILTIN for output
pinMode(LED_BUILTIN, OUTPUT);
// configure wifi network
thing.add_wifi(SSID, SSID_PASSWORD);
// pin control example (i.e. turning on/off a light, a relay, etc)
thing["led"] << digitalPin(LED_BUILTIN);
// resource output example (i.e. reading a sensor value, a variable, etc)
thing["millis"] >> outputValue(millis());
// start thinger task
thing.start();
// more details at http://docs.thinger.io/arduino/
}
void loop() {
// use loop as in normal Arduino Sketch
// use thing.lock() thing.unlock() if using variables exposed on thinger resources
}
Create also the arduino_secrets.h file, with the following details (adapting to your own Thinger.io username, device identifier, device credentials, and WiFi):
#define USERNAME "username"
#define DEVICE_ID "device"
#define DEVICE_CREDENTIAL "credential"
#define SSID "your_wifi_name"
#define SSID_PASSWORD "your_wifi_password"
Flash device
Now, upload your device (first time need to be done with the device connected to your computer) and ensure in serial monitor that the device is connected to the platform:
It is possible to also access to the Thinger.io console and check that the device API is working fine with the led and millis resources defined in the code:
OTA Update
Now, select your device by pressing the rocket icon in the bottom taskbar. If the Thinger.io VSCode extension is not configured, it will ask for the Thinger.io token with the permissions listed on requirements section.
Search and select your device:
And now, the device name is near the rocket icon:
Now, we are going to update the code, i.e., adding a serial debug:
void loop() {
Serial.println("Remote OTA Update!");
delay(5000);
}
To update the new version, just press the PLAY button near to the device switcher. It will compile the new version automatically, and will upload the firmware over the Internet.
After the update, the device will reboot automatically, and the new code will be running. We can veify the OTA update by checking the console output:
