[PC-971] benjamindannegard/Added-connectivty-tutorial-for-Opta #652

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	---
	title: 'Bluetooth® Low Energy, Wi-Fi® and Ethernet on Arduino Opta®'
	description: "Learn how to make use of the Arduino Opta's connectivity features"
	difficulty: beginner
	tags:
	- Wi-Fi®
	- Ethernet
	- Bluetooth®
	- Connectivity
	author: 'Benjamin Dannegård'
	libraries:
	- name: Arduino BLE
	url: https://www.arduino.cc/reference/en/libraries/arduinoble/
	software:
	- ide-v1
	- ide-v2
	- web-editor
	hardware:
	- hardware/05.pro-solutions/solutions-and-kits/opta
	---

	## Overview

	The Arduino Opta® is a powerful PLC device that has many features, allowing you to customize its use for your solution. Among these features are the standard connectivity features: Wi-Fi®, Ethernet and Bluetooth®. In this tutorial we will go through how to use these features with the Arduino IDE and the Arduino Opta®.

	## Goals

	- Learn how to use Bluetooth® Low Energy on the Arduino Opta®
	- Learn how to use Wi-Fi® on the Arduino Opta®
	- Learn how to use Ethernet on the Arduino Opta®

	### Required Hardware and Software

	- Arduino Opta®
	- Ethernet cable
	- [Arduino IDE](https://www.arduino.cc/en/software)
	- USB-C® cable (either USB-C to USB-A or USB-C to USB-C)
	- Wi-Fi® Access Point with Internet Access

	## Instructions

	### Setup With the Arduino IDE

	Using the Arduino IDE we can easily work with these peripherals. Some features have their own library that we can make use of. Make sure the latest version of the Arduino IDE is installed. The IDE can be downloaded [here](https://www.arduino.cc/en/software).

	Then we need to install the appropriate core for the Arduino Opta®. Go to Tools > Board > Boards Manager, in the boards manager section search for Opta mbed and install it. For more detailed instructions on setting up the Arduino Opta® with the Arduino IDE, have a look at the [Getting started with Opta tutorial](/tutorials/opta/getting-started).

	### Wi-Fi®

	The files necessary for using the Wi-Fi® on the Arduino Opta® are included in the core. To try it out, we can go to File > Examples, and under Examples for Opta we can find the WiFi section. Inside there is an example sketch called WiFiWebClient. Open this example sketch and fill out the WiFi details in the arduino_secrets.h tab. The sketch will make the Arduino Opta® connect to desired website defined within `char server[] = "example.com";` variable. If the connection is successful, it will then print the websites' HTML content to the serial monitor. If the sketch ran successfully, the output should look like the image below.

	![Running WiFi sketch on the Arduino Opta® in the Arduino IDE](assets/opta-wifi.png)

	If you want to take a deeper look at what features the WiFi library has to offer, [take a look at the API reference page](https://www.arduino.cc/reference/en/libraries/wifi/).

	### Ethernet

	The Arduino Opta® has a RJ45 ethernet port with a LED that will indicate the status of the connected cable. The files necessary for using Ethernet on the Arduino Opta® are included in the core. To try it out, we can go to File > Examples, and under Examples for Opta we can find the Ethernet section. Inside there is an example sketch called WebClient. Connect the Ethernet cable to the Arduino Opta® and upload the example. This example will function the same way as the one mentioned in the Wi-Fi® section. The device will connect to the website defined in the sketch and print the websites' HTML content in the serial monitor. If the sketch ran successfully, the output should look like the image below.

	![Running the Ethernet sketch on the Arduino Opta® in the Arduino IDE](assets/opta-ethernet.png)

	If you want to take a deeper look at what features the Ethernet library has to offer, [take a look at the API reference page](https://www.arduino.cc/reference/en/libraries/ethernet/).

	### Modbus TCP Via Ethernet Port

	The Arduino Opta® can be configured to use Modbus TCP protocol, which basically runs on Ethernet instead of serial lines using TCP interface over RTU protocol. Thus the coverage distance is dependent on the capacity of the Ethernet cable. For example, Cat6a cable could be paired with Arduino Opta® to operate inside industrial environment. Modbus TCP is a variant of the Modbus family of simple, vendor-neutral communication protocols intended for supervision and control of automation equipment. Specifically, it covers the use of Modbus messaging in an intranet or internet environment using the TCP/IP protocols. The most common use of the protocols at this time is for Ethernet attachment of PLCs, I/O modules and gateways to other simple field buses or I/O networks.

	### Bluetooth® Low Energy

	To use the Bluetooth® feature, you will need to download the ArduinoBLE library in the Arduino IDE. Go into the library manager and search for ArduinoBLE. if you can't find it, try sorting by official libraries published by Arduino. Once ArduinoBLE library is installed, let's try and run a simple example. We will test with the sketch that scans for other Bluetooth® devices within range. The sketch will then print the found devices address, local name and the advertised service UUIDs, if present. You can find the example under File > Examples > ArduinoBLE > Central, the sketch is called Scan. When the sketch is running on the Opta, the output on the serial monitor should look something like the image below.

	![Bluetooth® sketch running on the Opta](assets/opta-ble.png)

	If you want to take a deeper look at what features the ArduinoBLE library has to offer, [take a look at the API reference page](https://www.arduino.cc/reference/en/libraries/arduinoble/).

	## Conclusion

	Now you have a better overview of the connectivity features on the Arduino Opta® and how to use them. We went through how to use the different connectivity features and what libraries are required for them. By running all the example sketches on our device, we have made sure that the modules are all working and everything is up to date.

	### Next Steps

	Now that you know how to use the connectivity features of the device, have a look at our other tutorials and try to combine the different features. The Arduino Opta® uses the same architecture as the Portanta H7, it could therefore be a good idea to take a look at the Portenta H7 tutorials. Such as the using your [device as a Wi-Fi® access point tutorial](https://docs.arduino.cc/tutorials/portenta-h7/wifi-access-point) or the [Bluetooth® Low Energy connectivity with a phone tutorial](https://docs.arduino.cc/tutorials/portenta-h7/ble-connectivity).

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