/// <summary>
/// Initializes new instance of Windows10SpiDevice that will use the specified settings to communicate with the SPI device.
/// </summary>
/// <param name="settings">
/// The connection settings of a device on a SPI bus.
/// </param>
public Windows10SpiDevice(SpiConnectionSettings settings)
{
if (settings.DataFlow != DataFlow.MsbFirst || settings.ChipSelectLineActiveState != PinValue.Low)
{
throw new PlatformNotSupportedException($"Changing {nameof(settings.DataFlow)} or {nameof(settings.ChipSelectLineActiveState)} options is not supported on the current platform.");
}
_settings = settings;
var winSettings = new WinSpi.SpiConnectionSettings(_settings.ChipSelectLine)
{
Mode = ToWinMode(settings.Mode),
DataBitLength = settings.DataBitLength,
ClockFrequency = settings.ClockFrequency,
};
string busFriendlyName = $"SPI{settings.BusId}";
string deviceSelector = WinSpi.SpiDevice.GetDeviceSelector(busFriendlyName);
DeviceInformationCollection deviceInformationCollection = DeviceInformation.FindAllAsync(deviceSelector).WaitForCompletion();
if (deviceInformationCollection.Count == 0)
{
throw new ArgumentException($"No SPI device exists for bus ID {settings.BusId}.", $"{nameof(settings)}.{nameof(settings.BusId)}");
}
_winDevice = WinSpi.SpiDevice.FromIdAsync(deviceInformationCollection[0].Id, winSettings).WaitForCompletion();
}
private async void Lightsetup()
{
var spiSettings = new SpiConnectionSettings(0);
spiSettings.ClockFrequency = 3600000;
spiSettings.Mode = SpiMode.Mode0;
string spiQuery = SpiDevice.GetDeviceSelector("SPI0");
var deviceInfo = await DeviceInformation.FindAllAsync(spiQuery);
if (deviceInfo != null && deviceInfo.Count > 0)
{
_mcp3008 = await SpiDevice.FromIdAsync(deviceInfo[0].Id, spiSettings);
}
else
{
textblocklight.Text = "SPI DEVICE BOT FOUND";
}
}
public async void Initialize()
{
try
{
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
settings.ClockFrequency = 3600000; // 3.6MHz is the rated speed of the MCP3008 at 5v
settings.Mode = SpiMode.Mode1;
string aqs = SpiDevice.GetDeviceSelector(); /* Get a selector string that will return all SPI controllers on the system */
var dis = await DeviceInformation.FindAllAsync(aqs); /* Find the SPI bus controller devices with our selector string */
mcp3008 = await SpiDevice.FromIdAsync(dis[0].Id, settings); /* Create an SpiDevice with our bus controller and SPI settings */
if (mcp3008 == null)
{
Debug.WriteLine(
"SPI Controller {0} is currently in use by " +
"another application. Please ensure that no other applications are using SPI.",
dis[0].Id);
return;
}
}
catch (Exception e)
{
Debug.WriteLine("Exception: " + e.Message + "\n" + e.StackTrace);
throw;
}
}
// Sets up this instance of the SensorSource
private async void Init()
{
await Task.Run(async () =>
{
try
{
var settings = new SpiConnectionSettings(0);
settings.ClockFrequency = 500000;
settings.Mode = SpiMode.Mode0;
string spi = SpiDevice.GetDeviceSelector("SPI0");
var deviceInfo = await DeviceInformation.FindAllAsync(spi);
device = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
isError = false;
}
catch (Exception ex)
{
isError = true;
// Triggers the StateChanged event
// false => sensor !isRunning (i.e. is not running due to error) / state => "INITIALIZE ERROR"
StateChanged(this, new StateChangedEventArgs(false, "INITIALIZE ERROR"));
Debug.WriteLine(ex.Message);
}
}).ContinueWith((task) => ReadData());
}
private SpiDevice spiDevice; // The SPI device the display is connected to
#endregion // Member Variables
#region Internal Methods
private async Task EnsureInitializedAsync()
{
// If already initialized, done
if (isInitialized) { return; }
// Validate
if (string.IsNullOrWhiteSpace(controllerName)) { throw new MissingIoException(nameof(ControllerName)); }
// Create SPI initialization settings
var settings = new SpiConnectionSettings(chipSelectLine);
settings.ClockFrequency = 1000000;
// The ADC expects idle-low clock polarity so we use Mode0
settings.Mode = SpiMode.Mode0;
// Find the selector string for the SPI bus controller
string spiAqs = SpiDevice.GetDeviceSelector(controllerName);
// Find the SPI bus controller device with our selector string
var deviceInfo = (await DeviceInformation.FindAllAsync(spiAqs)).FirstOrDefault();
// Make sure device was found
if (deviceInfo == null) { throw new DeviceNotFoundException(controllerName); }
// Create an SpiDevice with our bus controller and SPI settings
spiDevice = await SpiDevice.FromIdAsync(deviceInfo.Id, settings);
// Done initializing
isInitialized = true;
}
///<summary>
///Used to configure the RPi2 to communicate over the SPI bus to the MCP3008 ADC chip.
/// </summary>
///
public async void Initialize()
{
try
{
//Setup the SPI bus configuration
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
//3.6MHz is the rated speed of the MCP3008 at 5V
settings.ClockFrequency = 3600000;
settings.Mode = SpiMode.Mode0;
//Ask Windows for the list of SPI Devices
//Get a selector string that will return all SPI Controllers on the system
string aqs = SpiDevice.GetDeviceSelector();
//Find the SPI bus controller devices with our selector string
var dis = await DeviceInformation.FindAllAsync(aqs);
//Create an SPI device with our bus controller and SPI settings
mcp3008 = await SpiDevice.FromIdAsync(dis[0].Id, settings);
if (mcp3008 == null)
{
Debug.WriteLine("SPI controller {0} is currently in use by another application");
return;
}
}
catch (Exception e)
{
Debug.WriteLine("Exception: " + e.Message + "\n" + e.StackTrace);
throw;
}
}
//
// Constructor
//
public TLC5947ControllerBase(uint latchPin, uint blackoutPin)
{
// Create the controller
m_controller = new LedController(this, ControlerUpdateType.AllSlots);
// Open the latch pin
GpioController controller = GpioController.GetDefault();
m_latchPin = controller.OpenPin((int)latchPin);
m_latchPin.SetDriveMode(GpioPinDriveMode.Output);
// Open the black out pin, set it high and low to reset the device.
m_blackoutPin = controller.OpenPin((int)blackoutPin);
m_blackoutPin.SetDriveMode(GpioPinDriveMode.Output);
m_blackoutPin.Write(GpioPinValue.High);
m_blackoutPin.Write(GpioPinValue.Low);
// Create a async task to setup SPI
new Task(async () =>
{
// Create the settings
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
// Max SPI clock frequency, here it is 30MHz
settings.ClockFrequency = 30000000;
settings.Mode = SpiMode.Mode0;
// Find the selector string for the SPI bus controller
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
// Find the SPI bus controller device with our selector string
var devicesInfo = await DeviceInformation.FindAllAsync(spiAqs);
// Create an SpiDevice with our bus controller and SPI settings
m_spiDevice = await SpiDevice.FromIdAsync(devicesInfo[0].Id, settings);
}).Start();
}
private async Task StartScenarioAsync()
{
String spiDeviceSelector = SpiDevice.GetDeviceSelector();
IReadOnlyList<DeviceInformation> devices = await DeviceInformation.FindAllAsync(spiDeviceSelector);
// 0 = Chip select line to use.
var ADXL345_Settings = new SpiConnectionSettings(0);
// 5MHz is the rated speed of the ADXL345 accelerometer.
ADXL345_Settings.ClockFrequency = 5000000;
// The accelerometer expects an idle-high clock polarity.
// We use Mode3 to set the clock polarity and phase to: CPOL = 1, CPHA = 1.
ADXL345_Settings.Mode = SpiMode.Mode3;
// If this next line crashes with an ArgumentOutOfRangeException,
// then the problem is that no SPI devices were found.
//
// If the next line crashes with Access Denied, then the problem is
// that access to the SPI device (ADXL345) is denied.
//
// The call to FromIdAsync will also crash if the settings are invalid.
//
// FromIdAsync produces null if there is a sharing violation on the device.
// This will result in a NullReferenceException a few lines later.
adxl345Sensor = await SpiDevice.FromIdAsync(devices[0].Id, ADXL345_Settings);
//
// Initialize the accelerometer:
//
// For this device, we create 2-byte write buffers:
// The first byte is the register address we want to write to.
// The second byte is the contents that we want to write to the register.
//
// 0x31 is address of data format register, 0x01 sets range to +- 4Gs.
byte[] WriteBuf_DataFormat = new byte[] { 0x31, 0x01 };
// 0x2D is address of power control register, 0x08 puts the accelerometer into measurement mode.
byte[] WriteBuf_PowerControl = new byte[] { 0x2D, 0x08 };
// Write the register settings.
//
// If this next line crashes with a NullReferenceException, then
// there was a sharing violation on the device.
// (See comment earlier in this function.)
//
// If this next line crashes for some other reason, then there was
// an error communicating with the device.
adxl345Sensor.Write(WriteBuf_DataFormat);
adxl345Sensor.Write(WriteBuf_PowerControl);
// Start the polling timer.
timer = new DispatcherTimer() { Interval = TimeSpan.FromMilliseconds(100) };
timer.Tick += Timer_Tick;
timer.Start();
}
internal async Task Initialize(byte frequency, byte nodeId, byte networkId)
{
var settings = new SpiConnectionSettings(0);
settings.ClockFrequency = 5000000; /* 5MHz is the rated speed of the ADXL345 accelerometer */
settings.Mode = SpiMode.Mode3;
string aqs = SpiDevice.GetDeviceSelector(); /* Get a selector string that will return all SPI controllers on the system */
var dis = await DeviceInformation.FindAllAsync(aqs); /* Find the SPI bus controller devices with our selector string */
_spiDevice = await SpiDevice.FromIdAsync(dis[0].Id, settings); /* Create an SpiDevice with our bus controller and SPI settings */
_spiDevice.ConnectionSettings.Mode = SpiMode.Mode0;
_spiDevice.ConnectionSettings.ClockFrequency = 5000;
_gpioController = GpioController.GetDefault();
_selectpin = _gpioController.OpenPin(22);
_selectpin.SetDriveMode(GpioPinDriveMode.Output);
byte[][] config =
{
new byte[] { REG_OPMODE, RF_OPMODE_SEQUENCER_ON | RF_OPMODE_LISTEN_OFF | RF_OPMODE_STANDBY },
new byte[] { REG_DATAMODUL, RF_DATAMODUL_DATAMODE_PACKET | RF_DATAMODUL_MODULATIONTYPE_FSK | RF_DATAMODUL_MODULATIONSHAPING_00 },
new byte[] { REG_BITRATEMSB, RF_BITRATEMSB_55555},
new byte[] { REG_BITRATELSB, RF_BITRATELSB_55555},
new byte[] { REG_FDEVMSB, RF_FDEVMSB_50000},
new byte[] { REG_FDEVLSB, RF_FDEVLSB_50000},
new byte[] { REG_FRFMSB, RF_FRFMSB_915 },
/* 0x08 */ new byte[] { REG_FRFMID, RF_FRFMID_915 },
/* 0x09 */ new byte[] { REG_FRFLSB, RF_FRFLSB_915 },
new byte[] { REG_RXBW, RF_RXBW_DCCFREQ_010 | RF_RXBW_MANT_16 | RF_RXBW_EXP_2 },
new byte[] { REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_01 },
new byte[] { REG_DIOMAPPING2, RF_DIOMAPPING2_CLKOUT_OFF },
new byte[]{ REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN },
new byte[]{ REG_RSSITHRESH, 220 },
new byte[] { REG_SYNCCONFIG, RF_SYNC_ON | RF_SYNC_FIFOFILL_AUTO | RF_SYNC_SIZE_2 | RF_SYNC_TOL_0 },
new byte[]{ REG_SYNCVALUE1, 0x2D }, // attempt to make this compatible with sync1 byte of RFM12B lib
/* 0x30 */ new byte[]{ REG_SYNCVALUE2, networkId }, // NETWORK ID
/* 0x37 */ new byte[]{ REG_PACKETCONFIG1, RF_PACKET1_FORMAT_VARIABLE | RF_PACKET1_DCFREE_OFF | RF_PACKET1_CRC_ON | RF_PACKET1_CRCAUTOCLEAR_ON | RF_PACKET1_ADRSFILTERING_OFF },
/* 0x38 */ new byte[]{ REG_PAYLOADLENGTH, 66 }, // in variable length mode: the max frame size, not used in TX
//* 0x39 */ { REG_NODEADRS, nodeID }, // turned off because we're not using address filtering
/* 0x3C */ new byte[]{ REG_FIFOTHRESH, RF_FIFOTHRESH_TXSTART_FIFONOTEMPTY | RF_FIFOTHRESH_VALUE }, // TX on FIFO not empty
/* 0x3D */ new byte[]{ REG_PACKETCONFIG2, RF_PACKET2_RXRESTARTDELAY_2BITS | RF_PACKET2_AUTORXRESTART_ON | RF_PACKET2_AES_OFF }, // RXRESTARTDELAY must match transmitter PA ramp-down time (bitrate dependent)
//for BR-19200: /* 0x3D */ { REG_PACKETCONFIG2, RF_PACKET2_RXRESTARTDELAY_NONE | RF_PACKET2_AUTORXRESTART_ON | RF_PACKET2_AES_OFF }, // RXRESTARTDELAY must match transmitter PA ramp-down time (bitrate dependent)
/* 0x6F */ new byte[]{ REG_TESTDAGC, RF_DAGC_IMPROVED_LOWBETA0 }, // run DAGC continuously in RX mode for Fading Margin Improvement, recommended default for AfcLowBetaOn=0
};
foreach (var configValue in config)
{
_spiDevice.Write(configValue);
}
SetHighPower();
}
private static async void InitSPI()
{
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
settings.ClockFrequency = 500000;// 10000000;
settings.Mode = SpiMode.Mode0; //Mode3;
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
SpiDisplay = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
/// <summary>
/// Initializes a new instance of SpiDevice.
/// </summary>
/// <param name="deviceId">The unique name of the device.</param>
/// <param name="settings">Settings to open the device with.</param>
internal SpiDevice( string deviceId, SpiConnectionSettings settings )
{
// Device ID must match the index in device information.
// We don't have many buses, so just hard-code the valid ones instead of parsing.
m_spiBus = GetBusNum( deviceId );
m_deviceId = deviceId.Substring( 0 );
m_settings = new SpiConnectionSettings( settings );
InitNative( );
}
/// <summary>
/// Initializes a new instance of SpiDevice.
/// </summary>
/// <param name="deviceId">The unique name of the device.</param>
/// <param name="settings">Settings to open the device with.</param>
internal SpiDevice(string deviceId, SpiConnectionSettings settings)
{
// Device ID must match the index in device information.
// We don't have many buses, so just hard-code the valid ones instead of parsing.
m_spiBus = GetBusNum(deviceId);
m_deviceId = deviceId.Substring(0);
m_settings = new SpiConnectionSettings(settings);
InitNative( );
}
public async Task Initialize()
{
var spiAqs = SpiDevice.GetDeviceSelector();
var devicesInfo = await DeviceInformation.FindAllAsync(spiAqs);
var settings = new SpiConnectionSettings(0);
settings.ClockFrequency = 1000000;
settings.DataBitLength = 8;
settings.SharingMode = SpiSharingMode.Shared;
Device = await SpiDevice.FromIdAsync(devicesInfo[0].Id, settings);
}
public async Task Initialise()
{
var settings = new SpiConnectionSettings(SpiChipSelectLine)
{
ClockFrequency = 500000,
Mode = SpiMode.Mode0
};
var spiAqs = SpiDevice.GetDeviceSelector(SpiControllerName);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
_spiDevice = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
private async Task InitTSC2046SPI()
{
var touchSettings = new SpiConnectionSettings(CS_PIN);
touchSettings.ClockFrequency = 125000;
touchSettings.Mode = SpiMode.Mode0; //Mode0,1,2,3; MCP23S17 needs mode 0
string DispspiAqs = SpiDevice.GetDeviceSelector( "SPI0");
var DispdeviceInfo = await DeviceInformation.FindAllAsync(DispspiAqs);
touchSPI = await SpiDevice.FromIdAsync(DispdeviceInfo[0].Id, touchSettings);
//set vars
_lastTouchPosition = new Point(double.NaN, double.NaN);
_currentPressure = 0;
}
public async Task Init(string spi)
{
var settings = new SpiConnectionSettings(0)
{
ClockFrequency = 8000000,
Mode = SpiMode.Mode0
};
var spiAqs = SpiDevice.GetDeviceSelector(spi);
var devicesInfo = await DeviceInformation.FindAllAsync(spiAqs);
this.shiftRegister = await SpiDevice.FromIdAsync(devicesInfo[0].Id, settings);
}
public async Task InitializeSPI_Async()
{
var selector = SpiDevice.GetDeviceSelector();
var devices = await DeviceInformation.FindAllAsync(selector);
var screenSettings = new SpiConnectionSettings(_spiChannel);
screenSettings.ClockFrequency = _clockSpeed;
screenSettings.Mode = SpiMode.Mode0;
screenSettings.DataBitLength = 8;
screenSettings.SharingMode = SpiSharingMode.Shared;
_screenSPI = await SpiDevice.FromIdAsync(devices[0].Id, screenSettings);
}
private async Task InitSPI(ChipSelect cs) {
try {
var settings = new SpiConnectionSettings((int)cs);
settings.ClockFrequency = 500000;// 10000000;
settings.Mode = SpiMode.Mode0; //Mode3;
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
SpiMCP3200 = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
/* If initialization fails, display the exception and stop running */
catch (Exception ex) {
throw new Exception("SPI Initialization Failed", ex);
}
}
private async void InitSPIAndTimer() {
try {
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
settings.ClockFrequency = 3000000;// 3200000;3000000;500000
settings.Mode = SpiMode.Mode0;
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
m_spiDev = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
m_timer.Start();
} catch (Exception) {
uxBytes.Text = "NO SPI!";
m_spiDev = null;
}
}
public async void InitSPI(int selectline = 0)
{
try
{
var settings = new SpiConnectionSettings(selectline);
settings.ClockFrequency = 500000;
settings.Mode = SpiMode.Mode0;
string deviceSelector = SpiDevice.GetDeviceSelector("SPI0");
var deviceInfo = await DeviceInformation.FindAllAsync(deviceSelector);
SpiDisplay = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
catch (Exception ex)
{
throw new Exception("SPI Initialization Failed", ex);
}
}
private async Task InitSpi()
{
try
{
var settingsSPI = new SpiConnectionSettings(0);
settingsSPI.ClockFrequency = 10000000;
settingsSPI.Mode = SpiMode.Mode3;
string SPIController = SpiDevice.GetDeviceSelector("SPI0");
var deviceInfo = await DeviceInformation.FindAllAsync(SPIController);
SPI = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settingsSPI);
}
catch (Exception ex)
{
throw new Exception("SPI Initialization Failed", ex);
}
}
public async void Initialize()
{
GpioPin cePin = GpioController.GetDefault().OpenPin(26);
SpiConnectionSettings settings = new SpiConnectionSettings(0)
{
ClockFrequency = 1000000,
Mode = SpiMode.Mode0
};
string spiAqs = SpiDevice.GetDeviceSelector("SPI0");
DeviceInformationCollection devicesInfo = await DeviceInformation.FindAllAsync(spiAqs);
SpiDevice spiDevice = await SpiDevice.FromIdAsync(devicesInfo[0].Id, settings);
_radio = new Radio(cePin, spiDevice);
_radio.Begin();
string details = _radio.GetDetails();
}
private async void InitMcp3008()
{
// using SPI0 on the Pi
var spiSettings = new SpiConnectionSettings(0); //for spi bus index 0
spiSettings.ClockFrequency = 10000; // 10kHz-3.6MHz
spiSettings.Mode = SpiMode.Mode0;
var spiQuery = SpiDevice.GetDeviceSelector("SPI0");
var deviceInfo = await DeviceInformation.FindAllAsync(spiQuery);
if (deviceInfo != null && deviceInfo.Count > 0)
{
_mcp3008 = await SpiDevice.FromIdAsync(deviceInfo[0].Id, spiSettings);
}
else
{
throw new InvalidOperationException("No MCP3008 found at SPI0");
}
}
private async void InitializeSpi() //declare function called Spi.
{
try
{
var settings = new SpiConnectionSettings(CHIP_SELECT); //setup SPI settings.
settings.ClockFrequency = 1000000; //set clock frequency to 1MHz.
settings.Mode = SpiMode.Mode0; //set spi mode to 0: clk idle low, latch on rising edge
string SpiInput = SpiDevice.GetDeviceSelector(INPUT_CHANNEL); //Select which Input channel to read from.
var DeviceInfo = await DeviceInformation.FindAllAsync(SpiInput); //Find asynchronous signals from A/DC
SpiDisplay = await SpiDevice.FromIdAsync(DeviceInfo[0].Id, settings); // Starts an asynchronous object
}
catch (Exception ex) //If this doesnt work.
{
throw new Exception("Spi Initialization Failed", ex); //send exception to UI.
}
}
private async Task InitSPI()
{
try
{
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
settings.ClockFrequency = 500000; /* 0.5MHz clock rate */
settings.Mode = SpiMode.Mode0; /* The ADC expects idle-low clock polarity so we use Mode0 */
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
SpiADC = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
/* If initialization fails, display the exception and stop running */
catch (Exception ex)
{
throw new Exception("SPI Initialization Failed", ex);
}
}
public static async Task InitSPI()
{
try
{
var settings = new SpiConnectionSettings(SPI_CHIP_SELECT_LINE);
settings.ClockFrequency = 1000000;// 10000000;
settings.Mode = SpiMode.Mode0; //Mode0,1,2,3; MCP23S17 needs mode 0
string spiAqs = SpiDevice.GetDeviceSelector(SPI_CONTROLLER_NAME);
var deviceInfo = await DeviceInformation.FindAllAsync(spiAqs);
SpiGPIO = await SpiDevice.FromIdAsync(deviceInfo[0].Id, settings);
}
/* If initialization fails, display the exception and stop running */
catch (Exception ex)
{
//statusText.Text = "\nSPI Initialization Failed";
}
}
/// <summary>
/// Initialize SPI.
/// </summary>
/// <returns></returns>
private async Task InitSpi()
{
try
{
var settings = new SpiConnectionSettings((int)chipSelect);
settings.ClockFrequency = 10000000;
settings.Mode = SpiMode.Mode0;
settings.SharingMode = SpiSharingMode.Shared;
string spiAqs = SpiDevice.GetDeviceSelector(SPIControllerName); /* Find the selector string for the SPI bus controller */
var devicesInfo = await DeviceInformation.FindAllAsync(spiAqs); /* Find the SPI bus controller device with our selector string */
SpiDisplay = await SpiDevice.FromIdAsync(devicesInfo[0].Id, settings); /* Create an SpiDevice with our bus controller and SPI settings */
}
/* If initialization fails, display the exception and stop running */
catch (Exception ex)
{
throw new Exception("SPI Initialization Failed", ex);
}
}
public static async Task<SN74HC595> Create(int chipSelectLine)
{
var settings = new SpiConnectionSettings(chipSelectLine)
{
ClockFrequency = 1000000,
Mode = SpiMode.Mode0,
DataBitLength = 8
};
var aqs = SpiDevice.GetDeviceSelector();
var dis = await DeviceInformation.FindAllAsync(aqs);
if (!dis.Any())
throw new Exception("No SPI controllers");
var spi = await SpiDevice.FromIdAsync(dis[0].Id, settings);
if (spi == null)
throw new Exception(string.Format("SPI Controller '{0}' could not be initialized", dis[0].Id));
return new SN74HC595(spi);
}
private async Task<LEDPanel> CreateLEDPanel()
{
var settings = new SpiConnectionSettings(CHIP_SELECT_LINE)
{
ClockFrequency = 40000,
Mode = SpiMode.Mode0,
DataBitLength = 8
};
var aqs = SpiDevice.GetDeviceSelector();
var dis = await DeviceInformation.FindAllAsync(aqs);
if (!dis.Any())
throw new Exception("No SPI controllers");
var spi = await SpiDevice.FromIdAsync(dis[0].Id, settings);
if (spi == null)
throw new Exception(string.Format("SPI Controller '{0}' could not be initialized", dis[0].Id));
return new LEDPanel(spi, 5);
}
private async void btnConnect_Click(object sender, RoutedEventArgs e)
{
//using SPI0 on the Pi
var spiSettings = new SpiConnectionSettings(0);//for spi bus index 0
spiSettings.ClockFrequency = 3600000; //3.6 MHz
spiSettings.Mode = SpiMode.Mode0;
string spiQuery = SpiDevice.GetDeviceSelector("SPI0");
//using Windows.Devices.Enumeration;
var deviceInfo = await DeviceInformation.FindAllAsync(spiQuery);
if(deviceInfo!=null && deviceInfo.Count > 0)
{
_mcp3008 = await SpiDevice.FromIdAsync(deviceInfo[0].Id, spiSettings);
btnConnect.IsEnabled = false;
} else
{
txtHeader.Text = "SPI Device Not Found :-(";
}
}
public OneCoreSpi(string portName, int chipSelect, int speed)
{
var controller = GpioController.GetDefault();
if (controller == null)
{
throw new InvalidOperationException("GpioController");
}
var settings = new SpiConnectionSettings(chipSelect);
settings.ClockFrequency = speed;
/* The display expects an idle-high clock polarity, we use Mode3
* to set the clock polarity and phase to: CPOL = 1, CPHA = 1 */
settings.Mode = SpiMode.Mode3;
var spiAqs = SpiDevice.GetDeviceSelector(portName);
var devicesInfo = DeviceInformation.FindAllAsync(spiAqs).GetResults();
this.spi = SpiDevice.FromIdAsync(devicesInfo[0].Id, settings).GetResults();
}
/// <summary>
/// Initializes a new instance of the <see cref="Windows10SpiDevice"/> class that will use the specified settings to communicate with the SPI device.
/// </summary>
/// <param name="settings">
/// The connection settings of a device on a SPI bus.
/// </param>
public Windows10SpiDevice(SpiConnectionSettings settings)
{
if (settings.ChipSelectLineActiveState != PinValue.Low)
{
throw new PlatformNotSupportedException($"Changing{nameof(settings.ChipSelectLineActiveState)} options is not supported on the current platform.");
}
if (settings.DataFlow == DataFlow.LsbFirst)
{
_isInverted = true;
}
_settings = settings;
// -1 means ignore Chip Select Line
int chipSelectLine = _settings.ChipSelectLine == -1 ? 0 : _settings.ChipSelectLine;
var winSettings = new WinSpi.SpiConnectionSettings(chipSelectLine)
{
Mode = ToWinMode(settings.Mode),
DataBitLength = settings.DataBitLength,
ClockFrequency = settings.ClockFrequency,
};
string busFriendlyName = $"SPI{settings.BusId}";
string deviceSelector = WinSpi.SpiDevice.GetDeviceSelector(busFriendlyName);
DeviceInformationCollection?deviceInformationCollection = DeviceInformation.FindAllAsync(deviceSelector).WaitForCompletion();
if (deviceInformationCollection is null || deviceInformationCollection.Count == 0)
{
throw new ArgumentException($"No SPI device exists for bus ID {settings.BusId}.", $"{nameof(settings)}.{nameof(settings.BusId)}");
}
WinSpi.SpiDevice?winDevice = WinSpi.SpiDevice.FromIdAsync(deviceInformationCollection[0].Id, winSettings).WaitForCompletion();
if (winDevice is null)
{
throw new Exception("A SPI device could not be found.");
}
_winDevice = winDevice;
}
internal SpiDevice(string spiBus, SpiConnectionSettings settings)
{
// spiBus is an ASCII string with the bus name in format 'SPIn'
// need to grab 'n' from the string and convert that to the integer value from the ASCII code (do this by subtracting 48 from the char value)
var controllerId = spiBus[3] - '0';
// Save reference to SpiController for _syncLock on controller
// Each controller needs to restrict access from multiple threads
// this will also work for same device from multiple threads
_spiController = SpiController.FindController(controllerId);
if (_spiController == null)
{
// this controller doesn't exist yet, create it...
_spiController = new SpiController(spiBus);
}
try
{
_connectionSettings = new SpiConnectionSettings(settings);
_deviceId = NativeOpenDevice();
}
catch (NotSupportedException)
{
// NotSupportedException
// Device(chip select) already in use
throw new SpiDeviceAlreadyInUseException();
}
catch (Exception ex)
{
// ArgumentException
// Invalid port or unable to init bus
// IndexOutOfRangeException
// Too many devices open or spi already in use
throw ex;
}
// device doesn't exist, create it...
_connectionSettings = new SpiConnectionSettings(settings);
_syncLock = new object();
}
/// <summary>
/// Inits the SPI for later use. Must be performed prior to any operation
/// </summary>
/// <param name="SelectedLine">Selected Line (0 for SPI0 port, 1 for SPI1 port...)</param>
/// <param name="clockFrecuency">Clock frecuency for the MCP3008 in hz. 3.6Mhz is recommended (3600000)</param>
/// <param name="mode">SPI Mode</param>
/// <returns>True if init is successfull. False if not.</returns>
public async Task<bool> spiInit(int SelectedLine, int clockFrecuency, SpiMode mode)
{
// Using SPD0 on RaspBerry PI 2
var spiSettings = new SpiConnectionSettings(SelectedLine);
spiSettings.ClockFrequency = clockFrecuency;
spiSettings.Mode = mode;
string spiQuery = SpiDevice.GetDeviceSelector("SPI" + SelectedLine.ToString());
var deviceInfo = await DeviceInformation.FindAllAsync(spiQuery);
if (deviceInfo?.Count > 0)
{
_mcp3008 = await SpiDevice.FromIdAsync(deviceInfo[0].Id, spiSettings);
return true;
}
else
{
_mcp3008 = null;
return false;
}
}
/// <summary>
/// Initializes new instance of Windows10SpiDevice that will use the specified settings to communicate with the SPI device.
/// </summary>
/// <param name="settings">
/// The connection settings of a device on a SPI bus.
/// </param>
public Windows10SpiDevice(SpiConnectionSettings settings)
{
_settings = settings;
var winSettings = new WinSpi.SpiConnectionSettings(_settings.ChipSelectLine)
{
Mode = ToWinMode(settings.Mode),
DataBitLength = settings.DataBitLength,
ClockFrequency = settings.ClockFrequency,
};
string busFriendlyName = $"SPI{settings.BusId}";
string deviceSelector = WinSpi.SpiDevice.GetDeviceSelector(busFriendlyName);
DeviceInformationCollection deviceInformationCollection = DeviceInformation.FindAllAsync(deviceSelector).WaitForCompletion();
if (deviceInformationCollection.Count == 0)
{
throw new ArgumentException($"No SPI device exists for bus ID {settings.BusId}.", $"{nameof(settings)}.{nameof(settings.BusId)}");
}
_winDevice = WinSpi.SpiDevice.FromIdAsync(deviceInformationCollection[0].Id, winSettings).WaitForCompletion();
}
/// <summary>
/// Opens a device with the connection settings provided.
/// </summary>
/// <param name="busId">The id of the bus.</param>
/// <param name="settings"></param>
/// <returns></returns>
public static SpiDevice FromId(string busId, SpiConnectionSettings settings)
{
// FUTURE: This should be "Task<SpiDevice*> FromIdAsync(...)"
switch (settings.Mode)
{
case SpiMode.Mode0:
case SpiMode.Mode1:
case SpiMode.Mode2:
case SpiMode.Mode3:
break;
default:
throw new ArgumentException( );
}
switch (settings.SharingMode)
{
case SpiSharingMode.Exclusive:
case SpiSharingMode.Shared:
break;
default:
throw new ArgumentException( );
}
switch (settings.DataBitLength)
{
case 8:
case 16:
break;
default:
throw new ArgumentException( );
}
return(new SpiDevice(busId, settings));
}
/// <summary>
/// Opens a device with the connection settings provided.
/// </summary>
/// <param name="busId">The id of the bus.</param>
/// <param name="settings">The connection settings.</param>
/// <returns>The SPI device requested.</returns>
/// <remarks>This method is specific to nanoFramework. The equivalent method in the UWP API is: FromIdAsync.</remarks>
/// <exception cref="System.NotSupportedException">
/// Thrown if the chip select pin is already in use</exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// Thrown if the maximum number of devices on SPI bus is reached</exception>
/// <exception cref="System.ArgumentException">
/// Thrown if invalid SPI bus</exception>
/// <exception cref="System.SystemException">
/// Thrown if GPIO pin already in use.</exception>
public static SpiDevice FromId(string busId, SpiConnectionSettings settings)
{
//TODO: some sanity checks on busId
return(new SpiDevice(busId, settings));
}
/// <summary>
/// Gets the SPI device with the specified settings.
/// </summary>
/// <param name="settings">The desired connection settings.</param>
/// <returns>The SPI device.</returns>
/// <exception cref="System.NotSupportedException">
/// Thrown if the chip select pin is already in use</exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// Thrown if the maximum number of devices on SPI bus is reached</exception>
/// <exception cref="System.ArgumentException">
/// Thrown if invalid SPI bus</exception>
/// <exception cref="System.SystemException">
/// Thrown if GPIO pin already in use.</exception>
public SpiDevice GetDevice(SpiConnectionSettings settings)
{
//TODO: fix return value. Should return an existing device (if any), not really documented what it does
// Although examples seen to just open device against current controller
return(new SpiDevice($"SPI{_controllerId}", settings));
}