public static void Initialize()
{
// Default to SDL interface for cross platform desktop support
Platform = HardwareType.PC;
Screen = ScreenType.SDLWindow480x360;
// Check for supported embedded platforms
if (File.Exists("/proc/device-tree/model"))
{
var model = File.ReadAllText("/proc/device-tree/model");
if (model.Contains("Orange Pi"))
{
Platform = HardwareType.OrangePi;
}
else if (model.Contains("Raspberry Pi"))
{
Platform = HardwareType.RaspberryPi;
}
}
// Check for supported embedded screens
if (File.Exists("/sys/class/graphics/fb1/virtual_size"))
{
var size = File.ReadAllText("/sys/class/graphics/fb1/virtual_size");
switch (size)
{
case "480,320":
Screen = ScreenType.FB480x360;
break;
case "800,480":
Screen = ScreenType.FB800x480;
break;
}
}
else if (File.Exists("/sys/class/graphics/fb0/virtual_size"))
{
var size = File.ReadAllText("/sys/class/graphics/fb0/virtual_size");
switch (size)
{
case "480,320":
Screen = ScreenType.FB480x360;
break;
case "800,480":
Screen = ScreenType.FB800x480;
break;
}
}
// Check for supported embedded screens
if (File.Exists("/sys/class/graphics/fb1/virtual_size"))
{
var size = File.ReadAllText("/sys/class/graphics/fb1/virtual_size");
switch (size)
{
case "480,320":
Screen = ScreenType.FB480x360;
break;
case "800,480":
Screen = ScreenType.FB800x480;
break;
}
}
else if (File.Exists("/sys/class/graphics/fb0/virtual_size"))
{
var size = File.ReadAllText("/sys/class/graphics/fb0/virtual_size");
switch (size)
{
case "480,320":
Screen = ScreenType.FB480x360;
break;
case "800,480":
Screen = ScreenType.FB800x480;
break;
}
}
switch (Platform)
{
case HardwareType.OrangePi:
serialPort = new SerialPort("/dev/ttyS3", 9600, Parity.None, 8, StopBits.One);
address0Pin = 11;
address1Pin = 6;
address2Pin = 0;
address3Pin = 3;
address4Pin = 7;
address5Pin = 8;
address6Pin = 10;
address7Pin = 20;
triggerPin = 9;
ledPin = 200;
beeperPin = 201;
break;
case HardwareType.RaspberryPi:
serialPort = new SerialPort("/dev/serial0", 9600, Parity.None, 8, StopBits.One);
address0Pin = 3;
address1Pin = 4;
address2Pin = 27;
address3Pin = 22;
address4Pin = 5;
address5Pin = 6;
address6Pin = 19;
address7Pin = 26;
triggerPin = 13;
ledPin = 12;
beeperPin = 16;
break;
}
switch (Platform)
{
case HardwareType.OrangePi:
case HardwareType.RaspberryPi:
W26Pipe.Initalize();
serialPort.Open();
var driver = new LibGpiodDriver(0);
gpio = new GpioController(PinNumberingScheme.Logical, driver);
gpio.OpenPin(address0Pin, PinMode.Output);
gpio.OpenPin(address1Pin, PinMode.Output);
gpio.OpenPin(address2Pin, PinMode.Output);
gpio.OpenPin(address3Pin, PinMode.Output);
gpio.OpenPin(address4Pin, PinMode.Output);
gpio.OpenPin(address5Pin, PinMode.Output);
gpio.OpenPin(address6Pin, PinMode.Output);
gpio.OpenPin(address7Pin, PinMode.Output);
gpio.OpenPin(triggerPin, PinMode.Output);
gpio.OpenPin(ledPin, PinMode.Output);
gpio.OpenPin(beeperPin, PinMode.Output);
break;
}
Logout();
}
public static string Read()
{
switch (Platform)
{
case HardwareType.OrangePi:
case HardwareType.RaspberryPi:
var output = W26Pipe.Read();
if (string.IsNullOrEmpty(output))
{
output = serialPort.ReadExisting();
}
if (!string.IsNullOrEmpty(output))
{
Console.WriteLine($"Received raw input [{output.Length}]: {output} {Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(output))}");
}
return(output);
default:
Thread.Sleep(5);
SDL2.SDL.SDL_PollEvent(out var pollEvent);
if (pollEvent.type == SDL.SDL_EventType.SDL_KEYDOWN)
{
var keycode = pollEvent.key.keysym.sym;
switch (keycode)
{
case SDL.SDL_Keycode.SDLK_HASH:
case SDL.SDL_Keycode.SDLK_RETURN:
case SDL.SDL_Keycode.SDLK_RETURN2:
return("B");
case SDL.SDL_Keycode.SDLK_ASTERISK:
case SDL.SDL_Keycode.SDLK_BACKSPACE:
return("A");
case SDL.SDL_Keycode.SDLK_ESCAPE:
Environment.Exit(0);
break;
}
var character = (char)keycode;
// Numerals
if (character > 47 && character < 58)
{
return(character.ToString());
}
}
else if (pollEvent.type == SDL.SDL_EventType.SDL_WINDOWEVENT)
{
if (pollEvent.window.windowEvent ==
SDL.SDL_WindowEventID.SDL_WINDOWEVENT_CLOSE)
{
Environment.Exit(0);
}
}
return("");
}
}
