/// <summary>
/// Attempt to get the best applicable driver for the board the program is executing on.
/// </summary>
/// <returns>A driver that works with the board the program is executing on.</returns>
private static GpioDriver GetBestDriverForBoard()
{
string[] cpuInfoLines = File.ReadAllLines(CpuInfoPath);
Regex regex = new Regex(@"Hardware\s*:\s*(.*)");
foreach (string cpuInfoLine in cpuInfoLines)
{
Match match = regex.Match(cpuInfoLine);
if (match.Success)
{
if (match.Groups.Count > 1)
{
if (match.Groups[1].Value == RaspberryPiHardware)
{
return(new RaspberryPi3Driver());
}
// Commenting out as HummingBoard driver is not implemented yet, will be added back after implementation
// https://github.com/dotnet/iot/issues/76
//if (match.Groups[1].Value == HummingBoardHardware)
//{
// return new HummingBoardDriver();
//}
return(UnixDriver.Create());
}
}
}
return(UnixDriver.Create());
}
/// <summary>
/// Attempt to get the best applicable driver for the board the program is executing on.
/// </summary>
/// <returns>A driver that works with the board the program is executing on.</returns>
private static GpioDriver GetBestDriverForBoardOnLinux()
{
RaspberryPi3LinuxDriver?internalDriver = RaspberryPi3Driver.CreateInternalRaspberryPi3LinuxDriver(out _);
if (internalDriver is object)
{
return(new RaspberryPi3Driver(internalDriver));
}
return(UnixDriver.Create());
}
/// <summary>
/// Attempt to get the best applicable driver for the board the program is executing on.
/// </summary>
/// <returns>A driver that works with the board the program is executing on.</returns>
private static GpioDriver GetBestDriverForBoardOnLinux()
{
try
{
// Because we can't construct the internal driver here (and the identification isn't public either), we'll have to go trough the exception
return(new RaspberryPi3Driver());
}
catch (Exception x) when(x is NotSupportedException || x is PlatformNotSupportedException)
{
}
return(UnixDriver.Create());
}
// TODO: remove try catch after https://github.com/dotnet/corefx/issues/32015 deployed
public static UnixDriver Create()
{
UnixDriver driver = null;
try
{
driver = new LibGpiodDriver();
}
catch (DllNotFoundException)
{
driver = new SysfsDriver();
}
return(driver);
}
// TODO: remove try catch after https://github.com/dotnet/corefx/issues/32015 deployed
public static UnixDriver Create()
{
UnixDriver driver = null;
try
{
driver = new LibGpiodDriver();
}
catch (PlatformNotSupportedException)
{
driver = new SysFsDriver();
}
return(driver);
}
internal static void Lcd(string message)
{
const int registerSelectPinNumber = 0;
const int enablePinNumber = 5;
int[] dataPinNumbers = { 6, 16, 20, 21 };
using (var driver = new UnixDriver())
using (var controller = new GpioController(driver))
{
GpioPin registerSelectPin = controller.OpenPin(registerSelectPinNumber);
GpioPin enablePin = controller.OpenPin(enablePinNumber);
GpioPin[] dataPins = controller.OpenPins(dataPinNumbers);
var lcd = new LcdController(registerSelectPin, enablePin, dataPins);
lcd.Begin(16, 2);
lcd.Print(message);
}
}
/// <summary>
/// Attempt to get the best applicable driver for the board the program is executing on.
/// </summary>
/// <returns>A driver that works with the board the program is executing on.</returns>
private static GpioDriver GetBestDriverForBoard()
{
string[] cpuInfoLines = File.ReadAllLines(CpuInfoPath);
Regex regex = new Regex(@"Hardware\s*:\s*(.*)");
foreach (string cpuInfoLine in cpuInfoLines)
{
Match match;
// a first chance of finding a raspberry pi..... perhaps not on Raspbian. note
// that we want this to fail quietly if something goes wrong with the test and continue
// with detecing a PI usiing /dev/cpuinfo
try
{
if (File.ReadAllText(ModelInfoPath).StartsWith("Raspberry Pi"))
{
return(new RaspberryPi3Driver());
}
}
catch { }
match = regex.Match(cpuInfoLine);
if (match.Success)
{
if (match.Groups.Count > 1)
{
if (match.Groups[1].Value == RaspberryPiHardware)
{
return(new RaspberryPi3Driver());
}
// Commenting out as HummingBoard driver is not implemented yet, will be added back after implementation
// https://github.com/dotnet/iot/issues/76
//if (match.Groups[1].Value == HummingBoardHardware)
//{
// return new HummingBoardDriver();
//}
return(UnixDriver.Create());
}
}
}
return(UnixDriver.Create());
}
/// <summary>
/// Static factory method
/// </summary>
/// <returns>An instance of GpioDriver, depending on which one fits</returns>
// TODO: remove try catch after https://github.com/dotnet/corefx/issues/32015 deployed
public static UnixDriver Create()
{
if (Environment.OSVersion.Platform != PlatformID.Unix)
{
throw new PlatformNotSupportedException(nameof(UnixDriver) + " is only supported on Linux/Unix");
}
UnixDriver driver = null;
try
{
driver = new LibGpiodDriver();
}
catch (PlatformNotSupportedException)
{
driver = new SysFsDriver();
}
return(driver);
}
