CSharp on RPi
C# can be used, in both compiled and interactive mode, on the Raspberry Pi via Mono.
Contents
Installation
To use C#, you must first install the mono-complete package. Under Debian:
sudo apt-get install mono-complete
Under Arch:
sudo pacman -S mono-complete
Usage
To use the interactive C# environment [1], simply type "csharp" at a command prompt. Enter some C# code, and it will be executed or evaluated immediately. Press Ctrl+D (or enter "quit;") to exit.
To compile, use the "mcs" (Mono C Sharp) command [2], specifying the name of your source file. This produces a new file with a ".exe" extension; run this executable with the "mono" command. For example:
mcs HelloWorld.cs
mono HelloWorld.exe
Examples
Hello World (Interactive)
The following shows how to launch the C# interactive environment and get it to print "Hello world!"
$ csharp
Mono C# Shell, type "help;" for help
Enter statements below.
csharp> print("Hello world!");
Hello world!
csharp>
Hello World (Compiled)
Put the follow code in a text file called "HelloWorld.cs" (using your favorite text editor; "nano" [3] comes standard). Compile with "mcs HelloWorld.cs" and run with "mono HelloWorld.exe".
using System;
public class HelloWorld {
public static void Main() {
Console.WriteLine("Hello world!");
}
}
Serial Port (Interactive)
This example shows creating the serial port by name (the standard name for the UART on the expansion header is /dev/ttyAMA0), checking its status, opening it, and finally writing some data.
csharp> using System.IO.Ports;
csharp> SerialPort sp = new SerialPort("/dev/ttyAMA0", 9600);
csharp> sp.IsOpen;
false
csharp> sp.Open();
csharp> sp.IsOpen;
true
csharp> sp.WriteLine("Hello world!");