protected bool BindSocket(GoSocket socket, System.Guid uniqueId)
{
// make sure that the socket is not in use.
if (socket.BoundToModule)
{
return(false);
}
// if we were passed a uniqueId, make sure that the module matches.
if (!uniqueId.Equals(Guid.Empty))
{
// validate the module's GUID
if (GoBus.GoHub.RootHub.GetModuleUniqueId(socket).Equals(uniqueId) == false)
{
return(false);
}
}
GoBus.GoHub.RootHub.SetSocketLedState((int)socket, true);
socket.BoundToModule = true;
_socket = socket;
_boundToSocket = true;
return(true);
}
public void Initialize(GoBus.GoSocket socket)
{
Cpu.Pin chipSelect;
Cpu.Pin gpio;
SPI.SPI_module spi;
socket.GetPhysicalResources(out gpio, out spi, out chipSelect);
Spi = new SPI(new SPI.Configuration(chipSelect, false, 1, 0, false, false, 1000, spi));
BindSocket(socket, new Guid(new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }));
}
protected void UnbindSocket()
{
if (_socket != null)
{
GoBus.GoHub.RootHub.SetSocketLedState((int)_socket, false);
_socket.BoundToModule = false;
}
_socket = null;
_boundToSocket = false;
}
public void Initialize(GoBus.GoSocket socket, NativeEventHandler irqHandler, uint speedKHz = 2500)
{
if (speedKHz < 500 || speedKHz > 10000)
{
throw new ArgumentOutOfRangeException("speedKHz");
}
if (irqHandler == null)
{
throw new ArgumentNullException("irqHandler");
}
Cpu.Pin chipSelect;
Cpu.Pin gpio;
SPI.SPI_module spiModule;
socket.GetPhysicalResources(out gpio, out spiModule, out chipSelect);
SetSocketPowerState(false);
Thread.Sleep(2000);
SetSocketPowerState(true);
Thread.Sleep(250);
Spi = new SPI(new SPI.Configuration(
SPI_mod: spiModule,
ChipSelect_Port: chipSelect,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: false,
Clock_RateKHz: speedKHz));
BindSocket(socket);
while (true)
{
Spi.WriteRead(spiTxBuffer, spiRxBuffer);
if (spiRxBuffer[1] == '[' &&
spiRxBuffer[2] == 'n' &&
spiRxBuffer[3] == 'w' &&
spiRxBuffer[4] == 'a' &&
spiRxBuffer[5] == 'z' &&
spiRxBuffer[6] == 'e' &&
spiRxBuffer[7] == 't' &&
spiRxBuffer[8] == '.' &&
spiRxBuffer[9] == 'j' &&
spiRxBuffer[10] == 's' &&
spiRxBuffer[11] == 't' &&
spiRxBuffer[12] == 'k')
{
break;
}
Thread.Sleep(100);
}
Irq = new InterruptPort(gpio, false, Port.ResistorMode.PullUp, Port.InterruptMode.InterruptEdgeLow);
Irq.OnInterrupt += new NativeEventHandler(irqHandler);
}
public void Initialize(GoSocket socket, string mountPoint = "SD")
{
_mountPoint = mountPoint;
SPI.SPI_module sdCardSpi;
Cpu.Pin sdCardChipSelect;
Cpu.Pin sdCardGPIO;
socket.GetPhysicalResources(out sdCardGPIO, out sdCardSpi, out sdCardChipSelect);
if (!BindSocket(socket)) throw new ApplicationException("socket already bound");
SetSocketPowerState(true);
StorageDevice.MountSD(_mountPoint, sdCardSpi, sdCardChipSelect);
}
public void Initialize(GoBus.GoSocket socket)
{
SPI.SPI_module spi;
Cpu.Pin chipSelect;
Cpu.Pin gpio;
socket.GetPhysicalResources(out gpio, out spi, out chipSelect);
if (!BindSocket(socket, new Guid(new byte[] { 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 })))
{
throw new ApplicationException("not a relay");
}
SetSocketPowerState(true);
_relay = new OutputPort(gpio, false);
}
protected bool BindSocket(GoSocket socket, System.Guid uniqueId)
{
// make sure that the socket is not in use.
if (socket.BoundToModule)
return false;
// if we were passed a uniqueId, make sure that the module matches.
if (!uniqueId.Equals(Guid.Empty))
{
// validate the module's GUID
if (GoBus.GoHub.RootHub.GetModuleUniqueId(socket).Equals(uniqueId) == false)
return false;
}
GoBus.GoHub.RootHub.SetSocketLedState((int)socket, true);
socket.BoundToModule = true;
_socket = socket;
_boundToSocket = true;
return true;
}
internal GoHub()
{
// initialize our sockets
_sockets = new GoSocket[_socketCount];
_socketLeds = new OutputPort[_socketCount];
for (int iSocket = 0; iSocket < _socketCount; iSocket++)
{
_sockets[iSocket] = new GoSocket(iSocket + 1);
_socketLeds[iSocket] = new OutputPort(GetSocketLedPin(iSocket + 1), false);
_sockets[iSocket].SetHub(this);
_sockets[iSocket].SetPowerState(true);
}
// TODO: do this in native code during clr startup, to ensure the pullup state.
// put uart RX pins in input, pull-up mode by creating and then disposing of them.
InputPort uart1rx = new InputPort((Cpu.Pin) 0x01, false, Port.ResistorMode.PullUp);
InputPort uart2rx = new InputPort((Cpu.Pin) 0x03, false, Port.ResistorMode.PullUp);
uart1rx.Dispose();
uart2rx.Dispose();
// enable our power output
_powerEnable = new OutputPort((Cpu.Pin) 0x0A, false);
}
protected bool BindSocket(GoSocket socket)
{
return(BindSocket(socket, Guid.Empty));
}
protected void UnbindSocket()
{
if (_socket != null)
{
GoBus.GoHub.RootHub.SetSocketLedState((int)_socket, false);
_socket.BoundToModule = false;
}
_socket = null;
_boundToSocket = false;
}
protected bool BindSocket(GoSocket socket)
{
return BindSocket(socket, Guid.Empty);
}
internal Guid GetModuleUniqueId(GoSocket socket)
{
int frameLength = 1 + 16 + 1;
byte[] writeFrameBuffer = new byte[frameLength];
byte[] readFrameBuffer = new byte[frameLength];
// get socket's physical pins and SPI bus
Cpu.Pin socketGpioPin;
SPI.SPI_module socketSpiModule;
Cpu.Pin socketSpiSlaveSelectPin;
//
socket.GetPhysicalResources(out socketGpioPin, out socketSpiModule, out socketSpiSlaveSelectPin);
SPI.Configuration spiConfig;
SPI spi;
try
{
spiConfig = new SPI.Configuration(socketSpiSlaveSelectPin, false, 0, 0, false, false, 500, socketSpiModule);
spi = new SPI(spiConfig);
}
catch
{
return(Guid.Empty);
}
// TODO: move the socket4ChipSelectDeassert logic to native code (this suppresses the MCO)
OutputPort socket4ChipSelectDeassert = null;
if (Port.ReservePin((Cpu.Pin) 0x08, true))
{
socket4ChipSelectDeassert = new OutputPort((Cpu.Pin) 0x08, true);
}
int iEnumAttempt = 0;
int emptyFrameCount = 0;
byte basicDeviceType = 0x00;
try
{
while (iEnumAttempt < 72) // NOTE: 72 attempts allow our frame to rotate four full times in case of frame mis-alignment; this should be unnecessary in time.
{
writeFrameBuffer[0] = 0xFE; // 'Enumerate' command
for (int i = 1; i < writeFrameBuffer.Length - 1; i++)
{
writeFrameBuffer[i] = 0xFF; // filler -- so that module sends ID
}
writeFrameBuffer[writeFrameBuffer.Length - 1] = CRC8.Compute8(writeFrameBuffer, 0, writeFrameBuffer.Length - 1);
spi.WriteRead(writeFrameBuffer, readFrameBuffer);
// validate the response...
bool replyIsBlank = true;
for (int i = 1; i < readFrameBuffer.Length - 1; i++)
{
if (readFrameBuffer[i] != 0)
{
replyIsBlank = false;
}
}
if (replyIsBlank)
{
// no response; try again (up to 4 times total)
emptyFrameCount++;
if (emptyFrameCount > 4)
{
return(Guid.Empty);
}
}
else if (CRC8.Compute8(readFrameBuffer) == 0)
{
return(new Guid(Microsoft.SPOT.Hardware.Utility.ExtractRangeFromArray(readFrameBuffer, 1, readFrameBuffer.Length - 2)));
}
else if (readFrameBuffer[1] != 0)
{
bool replyIsBasicDevice = true;
// did not pass CRC; see if it's a basic device type (first byte is id, then all other bytes including CRC will be zeros)
for (int i = 2; i < readFrameBuffer.Length; i++)
{
if (readFrameBuffer[i] != 0)
{
replyIsBasicDevice = false;
}
}
if (replyIsBasicDevice)
{
if (basicDeviceType == 0)
{
// first successful query; store this id and we'll verify by second enum
basicDeviceType = readFrameBuffer[1];
}
else
{
if (basicDeviceType == readFrameBuffer[1])
{
return(new Guid(Microsoft.SPOT.Hardware.Utility.ExtractRangeFromArray(readFrameBuffer, 1, readFrameBuffer.Length - 2)));
}
else
{
// mismatch; could not enumerate successfully
return(Guid.Empty);
}
}
}
}
else
{
// corrupt message; try again
}
iEnumAttempt++;
}
}
finally
{
if (socket4ChipSelectDeassert != null)
{
socket4ChipSelectDeassert.Dispose();
Port.ReservePin((Cpu.Pin) 0x08, false);
}
}
// if we reach here, we could not retrieve a GUID.
return(Guid.Empty);
}
public void Initialize(GoSocket socket, uint speedKHz = 25000)
{
if (speedKHz < 5000 || speedKHz > 40000) throw new ArgumentException("speedKHz");
if (socket == null) throw new ArgumentNullException("socket");
SPI.SPI_module displaySpi;
Cpu.Pin displayChipSelect;
Cpu.Pin displayGPIO;
socket.GetPhysicalResources(out displayGPIO, out displaySpi, out displayChipSelect);
if (!BindSocket(socket)) throw new InvalidOperationException("socket already bound");
SetSocketPowerState(false);
Thread.Sleep(2000);
SetSocketPowerState(true);
Thread.Sleep(250);
Spi = new SPI(new SPI.Configuration(
SPI_mod: displaySpi,
ChipSelect_Port: displayChipSelect,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: false,
Clock_RateKHz: speedKHz));
GoBusIrqPort = new InterruptPort(displayGPIO, false, Port.ResistorMode.PullUp, Port.InterruptMode.InterruptEdgeLow);
GoBusIrqPort.OnInterrupt += OnGoBusIrq;
WaitUntilModuleIsInitialized();
}