public override byte[] ReadRXFIFO()
{
lastRSSIRead = (byte)(ReadRegister16(0x06, 7) >> 10);
SpiTransferBuffer addressBuffer = new SpiTransferBuffer(1, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = (0x32 | C_REG_RD); // Start reading of FIFO Data Register
spiConnection.Transfer(addressBuffer);
SpiTransferBuffer dataLengthBuffer = new SpiTransferBuffer(1, SpiTransferMode.Read) { ChipSelectChange = true };
spiConnection.Transfer(dataLengthBuffer);
int receiveBufferLength = dataLengthBuffer.Rx[0]; // First byte of FIFO Data Register is the length of message to receive
receiveBufferLength = (receiveBufferLength <= PL1167_BUFFER_LENGTH) ? receiveBufferLength : PL1167_BUFFER_LENGTH; // First byte of FIFO Data Register is the length of message to receive
SpiTransferBuffer dataBuffer = new SpiTransferBuffer(receiveBufferLength, SpiTransferMode.Read) { ChipSelectChange = true };
spiConnection.Transfer(dataLengthBuffer);
byte[] receiveBuffer = new byte[receiveBufferLength];
for (int i = 0; i < receiveBufferLength; i++)
receiveBuffer[i] = dataBuffer.Rx[i];
ReadStatusReg();
return receiveBuffer;
}
/// <summary>
/// Initializes a new instance of the <see cref="SpiTransferBufferCollection"/> class.
/// </summary>
/// <param name="numberOfMessages">Number of tranfer messages</param>
/// <param name="messageLengthInBytes">Message size in bytes</param>
/// <param name="transferMode">Transfer mode</param>
public SpiTransferBufferCollection(int numberOfMessages, int messageLengthInBytes, SpiTransferMode transferMode) {
if (numberOfMessages <= 0) {
throw new ArgumentOutOfRangeException("numberOfMessages", numberOfMessages, string.Format(CultureInfo.InvariantCulture, "{0} is not a valid number of messages", numberOfMessages));
}
transferBuffers = new ISpiTransferBuffer[numberOfMessages];
for (var i = 0; i < numberOfMessages; i++) {
transferBuffers[i] = new SpiTransferBuffer(messageLengthInBytes, transferMode);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SpiTransferBufferCollection"/> class.
/// </summary>
/// <param name="numberOfMessages">Number of tranfer messages</param>
/// <param name="messageLengthInBytes">Message size in bytes</param>
/// <param name="transferMode">Transfer mode</param>
public SpiTransferBufferCollection(int numberOfMessages, int messageLengthInBytes, SpiTransferMode transferMode)
{
if (numberOfMessages <= 0)
{
throw new ArgumentOutOfRangeException("numberOfMessages", numberOfMessages, string.Format(CultureInfo.InvariantCulture, "{0} is not a valid number of messages", numberOfMessages));
}
transferBuffers = new ISpiTransferBuffer[numberOfMessages];
for (var i = 0; i < numberOfMessages; i++)
{
transferBuffers[i] = new SpiTransferBuffer(messageLengthInBytes, transferMode);
}
}
protected override void Cleanup() {
if (!ReferenceEquals(buffer, null)) {
buffer.Dispose();
buffer = null;
}
}
protected override void EstablishContext() {
buffer = new SpiTransferBuffer(REQUESTED_SIZE, SpiTransferMode.Write);
}
// Read and write RX/TX FIFO
public override void WriteTXFIFO(byte[] transmitBuffer)
{
if (transmitBuffer.Length < 256)
throw new Exception("Max buffer length is 256");
if (mode != PL1167Mode.Disabled)
StopRXTXMode();
ResetFIFOPointerReg(C_TXFIFOPOINTER);
SpiTransferBuffer addressBuffer = new SpiTransferBuffer(1, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = 0x32;
spiConnection.Transfer(addressBuffer);
//First byte contains FIFO length
SpiTransferBuffer dataBuffer = new SpiTransferBuffer(transmitBuffer.Length + 1, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = (byte)transmitBuffer.Length;
for (int i = 1; i < transmitBuffer.Length + 1; i++)
addressBuffer.Tx[i] = transmitBuffer[i];
spiConnection.Transfer(addressBuffer);
//delayMicroseconds(10);
SetTXMode();
ReadStatusReg();
//while (digitalRead(PL1167_PKT_PIN) == 0) ;
// delayMicroseconds(400);
}
/// <summary>
/// Write a register of PL1167
/// </summary>
/// <param name="ADDR">Register address to write int16 to</param>
/// <param name="MSByte">Most significant byte of value\</param>
/// <param name="LSByte">Least significant byte of value</param>
/// <param name="WAIT">Delay after write</param>
protected override void WriteRegister16(byte ADDR, byte MSByte, byte LSByte, byte WAIT)
{
// Create new buffer of one byte.
SpiTransferBuffer addressBuffer = new SpiTransferBuffer(1, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = ADDR;
spiConnection.Transfer(addressBuffer);
// Create new buffer of two bytes. Read them. Not setting Tx data shifts out zero
SpiTransferBuffer readBuffer = new SpiTransferBuffer(2, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = MSByte;
addressBuffer.Tx[1] = LSByte;
spiConnection.Transfer(readBuffer);
//delayMicroseconds(WAIT);
}
/// <summary>
/// Read a register of PL1167
/// </summary>
/// <param name="ADDR">Address of register</param>
/// <param name="WAIT">Delay time after read</param>
/// <returns></returns>
protected override int ReadRegister16(byte ADDR, byte WAIT)
{
// Create new buffer of one byte.
SpiTransferBuffer addressBuffer = new SpiTransferBuffer(1, SpiTransferMode.Write) { ChipSelectChange = true };
addressBuffer.Tx[0] = (byte)(ADDR | C_REG_RD);
spiConnection.Transfer(addressBuffer);
// Create new buffer of two bytes. Read them. Not setting Tx data shifts out zero
SpiTransferBuffer readBuffer = new SpiTransferBuffer(2, SpiTransferMode.Read) { ChipSelectChange = true };
spiConnection.Transfer(readBuffer);
return readBuffer.Rx[0] << 8 + readBuffer.Rx[1];
//delayMicroseconds(WAIT);
}