/// <summary>
/// Set up the SPI device and the controller for the transfer ready pin
/// </summary>
public static void Init()
{
// Initialize TX header. This only needs to happen once
Serialization.Writer.InitTransferHeader(ref _txHeader);
// Initialize transfer ready pin
_transferReadyPin = new InputGpioPin(Settings.GpioChipDevice, Settings.TransferReadyPin);
_transferReadyPin.PinChanged += (sender, pinValue) => _transferReadyEvent.Set();
_transferReadyPin.StartMonitoring(Program.CancelSource.Token);
// Initialize SPI device
_spiDevice = new SpiDevice(Settings.SpiDevice, Settings.SpiFrequency);
// Check if large transfers can be performed
try
{
int maxSpiBufferSize = int.Parse(File.ReadAllText("/sys/module/spidev/parameters/bufsiz"));
if (maxSpiBufferSize < Communication.Consts.BufferSize)
{
Console.WriteLine($"[warn] Kernel SPI buffer size is smaller than RepRapFirmware buffer size ({maxSpiBufferSize} configured vs {Communication.Consts.BufferSize} required)");
}
}
catch (Exception e)
{
Console.WriteLine("[warn] Failed to retrieve Kernel SPI buffer size:");
Console.WriteLine(e);
}
}
/// <summary>
/// Set up the SPI device and the controller for the transfer ready pin
/// </summary>
public static void Init()
{
// Initialize TX header. This only needs to happen once
Serialization.Writer.InitTransferHeader(ref _txHeader);
// Initialize TX buffers
for (int i = 0; i < NumTxBuffers; i++)
{
_txBuffers.AddLast(new byte[Communication.Consts.BufferSize]);
}
_txBuffer = _txBuffers.First;
// Initialize transfer ready pin
_transferReadyPin = new InputGpioPin(Settings.GpioChipDevice, Settings.TransferReadyPin, $"dcs-trp-{Settings.TransferReadyPin}");
_transferReadyPin.PinChanged += (sender, pinValue) => _transferReadyEvent.Set();
_ = _transferReadyPin.StartMonitoring(Program.CancelSource.Token);
// Initialize SPI device
_spiDevice = new SpiDevice(Settings.SpiDevice, Settings.SpiFrequency);
// Check if large transfers can be performed
try
{
int maxSpiBufferSize = int.Parse(File.ReadAllText("/sys/module/spidev/parameters/bufsiz"));
if (maxSpiBufferSize < Communication.Consts.BufferSize)
{
_logger.Warn("Kernel SPI buffer size is smaller than RepRapFirmware buffer size ({0} configured vs {1} required)", maxSpiBufferSize, Communication.Consts.BufferSize);
}
}
catch (Exception e)
{
_logger.Warn(e, "Failed to retrieve Kernel SPI buffer size");
}
}
/// <summary>
/// Set up the SPI device and the controller for the transfer ready pin
/// </summary>
public static void Initialize()
{
// Initialize TX header. This only needs to happen once
Serialization.Writer.InitTransferHeader(ref _txHeader);
// Initialize transfer ready pin
_transferReadyPin = new InputGpioPin(Settings.GpioChipDevice, Settings.TransferReadyPin);
_transferReadyPin.PinChanged += (sender, pinValue) => _transferReadyEvent.Set();
_transferReadyPin.StartMonitoring(Program.CancelSource.Token);
// Initialize SPI device
_spiDevice = new SpiDevice($"/dev/spidev{Settings.SpiBusID}.{Settings.SpiChipSelectLine}", Settings.SpiFrequency);
}