Creating C# Applications on Raspberry Pi

adityaswami89

4.00/5 (9 votes)

Mar 1, 2016

CPOL

2 min read

34043

Creating C# application’s on Raspberry Pi

Azure IOT Series

1. Azure IOT with Raspberry Pi : Azure IOT

Buy (and receive): Raspberry Pi kit (Raspberry Pi 2, HDMI cable, Wi-Fi Adapter/LAN wire, USB charger/normal USB driver mobile charger, Memory Card with NOOBS preinstalled)… Done
You would have got NOOBS preinstalled…so OS is ready….Done
Connect Raspberry Pi to internet using your Wi-Fi Adapter.
- Open command prompt and type in
```
sudo iwlist wlan0 scan
```
  This will list all the Wi-Fi networks available. You would need to note the ESSID of the network you wish to connect.
- Open the “wpa_supplicant” file as below:
```
sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
```
  Go to the bottom of the file and type in:
```
network={
ssid="The_ESSID_from_earlier"
psk="Your_wifi_password"
}
```
- Now save the file by pressing Ctrl+X then Y, then finally press Enter.
- Reboot your Pi:
```
 sudo reboot  
```
- You can verify if it has successfully connected using:
```
 ifconfig wlan0  
```
  If the “inet addr” field has an address beside it, the Pi has connected to the network. If not, check your password and ESSID are correct.
Now to write C# applications, we need to intall Mono on our Pi:
```
$ sudo apt-get update
$ sudo apt-get install mono-runtime
```
To make your mono applications make REST based calls, we would need to install trusted roots certificate from Mozilla as below:
```
$ sudo mozroots --import --ask-remove --machine
```
Now open Visual Studio and create any simple “Hello World” Console Application. Build and generate the ‘.exe’ file.
```
using System;

public class HelloWorld
{
static public void Main ()
{
Console.WriteLine ("Hello from Raspberry Pi");
}
}
```
Download FileZilla Client from: https://filezilla-project.org/. This is used for transferring your files from your desktop to Raspberry Pi.
Once download and install click File -> Site Manager.
Host: Ip Address of Raspberry Pi ( use command ip addr to get the Ip from Rasp)
Protocol: SFTP
Logon Type: Normal
User: pi
Password: raspberry

Then you will be able to transfer the file.
Once you have copied your Release folder into Raspberry Pi, I created a folder called Code and dumped the Debug file. Our Rasp will look as below:
In Raspberry Pi, you will be able to run your application as:
```
mono /home/pi/Code/Debug/Device.exe
```

In our next blog, we will learn how to use Azure IOT and connect our Raspberry Pi to Azure and receive messages.