Intro

This example uses C# for Raspberry Pi 3 and demonstrates remote debugging.

Fore note, all tests are performed using vs2019 (v16.4), RaspberryPi 3b v1.2 w/ Raspbian v9.

Linux - Launching the app

To launch your app using a clickable link on Desktop Linux.

We uploaded ours using WinSCP portable app to a new folder called TestApps under /home/pi/Desktop, and renamed the exe to test-pinet.exe to keep things simple.

Next, we'll create the clicking file. Open a console window and navigate to our new folder. Now, type sudo nano TestPi.sh and input the following content

#!/bin/bash
mono /home/pi/Desktop/TestApps/test-pinet.exe

Now give the TestPi.sh file executable rights

sudo chmod +x TestPi.sh

Give it a try by double clicking your file via the Desktop.

Raspberry Pi GPIO

• https://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29

.NET Core IoT

The C# snip below can be found at the .NET Core IoT samples.

Requires:

• Red LED (1.8 - 2.2 Vf)
• 100K resistor
• GPIO pin 17 and GND.

int pin = 17;
GpioController controller = new GpioController();
controller.OpenPin(pin, PinMode.Output);

// Blink the LED
int lightTimeInMilliseconds = 1000;
int dimTimeInMilliseconds = 200;

while (true)
{
  Console.WriteLine($"Light for {lightTimeInMilliseconds}ms");
  controller.Write(pin, PinValue.High);

  Thread.Sleep(lightTimeInMilliseconds);
  Console.WriteLine($"Dim for {dimTimeInMilliseconds}ms");

  controller.Write(pin, PinValue.Low);
  Thread.Sleep(dimTimeInMilliseconds);
}

Resources

Raspberry Pi GPIO

• .NET Core IoT System.Device.Gpio - 2019-12-22
  • Samples for .NET Core 2.1 and 3.0.
  • Supports Raspberry Pi 2B, 3, and 4 models (ARMv7/v8).
  • Raspberry Pi Zero or Arduino is not supported at this time (2019-12-27)
• Raspberry-GPIO-Manager - 2018-01-20
• RaspberryPi.Net - 2017-05-06
• http://raspberrypi-aa.github.io/session2/led_control.html
• https://www.hanselman.com/blog/InstallingTheNETCore2xSDKOnARaspberryPiAndBlinkingAnLEDWithSystemDeviceGpio.aspx

Remote Debugging:

• Connect VS to remote Linux
• VSMonoDebugger
  • https://github.com/GordianDotNet/VSMonoDebugger
  • Tested uploading EXE works
  • Tested remote debugging and it fails out of the box.
• Mono Remote Debugger
  • https://github.com/techl/MonoRemoteDebugger
  • MSDN Thread
• MonoDevelop Remote Debugger
  • https://addins.monodevelop.com/Project/Index/205
  • https://github.com/logicethos/SSHDebugger