/// <summary>
/// Initializes a new instance of the <see cref="SpiTransferBuffer"/> class.
/// </summary>
/// <param name="lengthInBytes">Size of data that shall be transmitted.</param>
/// <param name="transferMode">Specifies read and/or write mode.</param>
public SpiTransferBuffer(int lengthInBytes, SpiTransferMode transferMode)
{
if (transferMode == 0)
{
throw new ArgumentException("An appropriate transfer mode must be specified (read/write)", "transferMode");
}
mode = transferMode;
if ((TransferMode & SpiTransferMode.Write) == SpiTransferMode.Write)
{
txBuf = new ManagedMemory(lengthInBytes);
}
if ((TransferMode & SpiTransferMode.Read) == SpiTransferMode.Read)
{
rxBuf = new ManagedMemory(lengthInBytes);
}
var txPtr = ReferenceEquals(Tx, null)
? 0
: unchecked ((UInt64)Tx.Pointer.ToInt64());
var rxPtr = ReferenceEquals(Rx, null)
? 0
: unchecked ((UInt64)Rx.Pointer.ToInt64());
control.Length = unchecked ((uint)lengthInBytes);
control.Tx = txPtr;
control.Rx = rxPtr;
}
/// <summary>
/// Initializes a new instance of the <see cref="SpiTransferBuffer" /> class.
/// </summary>
/// <param name="lengthInBytes">Size of data that shall be transmitted.</param>
/// <param name="transferMode">Specifies read and/or write mode.</param>
public SpiTransferBuffer(int lengthInBytes, SpiTransferMode transferMode)
{
if (transferMode == 0)
{
throw new ArgumentException("An appropriate transfer mode must be specified (read/write)", nameof(transferMode));
}
this.mode = transferMode;
if ((this.TransferMode & SpiTransferMode.Write) == SpiTransferMode.Write)
{
this.txBuf = new ManagedMemory(lengthInBytes);
}
if ((this.TransferMode & SpiTransferMode.Read) == SpiTransferMode.Read)
{
this.rxBuf = new ManagedMemory(lengthInBytes);
}
var txPtr = this.Tx is null
? 0
: unchecked ((ulong)this.Tx.Pointer.ToInt64());
var rxPtr = this.Rx is null
? 0
: unchecked ((ulong)this.Rx.Pointer.ToInt64());
this.control.Length = unchecked ((uint)lengthInBytes);
this.control.Tx = txPtr;
this.control.Rx = rxPtr;
}
/// <summary>
/// Creates a transfer buffer of the given <see paramref="sizeInBytes"/> and copies the connection settings to it.
/// </summary>
/// <param name="sizeInBytes">Memory size in bytes.</param>
/// <param name="transferMode">The transfer mode.</param>
/// <returns>The requested transfer buffer.</returns>
public ISpiTransferBuffer CreateTransferBuffer(int sizeInBytes, SpiTransferMode transferMode)
{
return(new SpiTransferBuffer(sizeInBytes, transferMode)
{
BitsPerWord = bitsPerWord,
Delay = delay,
Speed = maxSpeed
});
}
/// <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>
/// Creates transfer buffers for <paramref name="numberOfMessages"/>.
/// </summary>
/// <param name="numberOfMessages">The number of messages to send.</param>
/// <param name="messageSizeInBytes">Message size in bytes.</param>
/// <param name="transferMode">The transfer mode.</param>
/// <returns>The requested transfer buffer collection.</returns>
public ISpiTransferBufferCollection CreateTransferBufferCollection(int numberOfMessages, int messageSizeInBytes, SpiTransferMode transferMode)
{
var collection = new SpiTransferBufferCollection(numberOfMessages, messageSizeInBytes, transferMode);
foreach (var transferBuffer in collection)
{
transferBuffer.BitsPerWord = bitsPerWord;
transferBuffer.Delay = delay;
transferBuffer.Speed = maxSpeed;
}
return(collection);
}
/// <summary>
/// Creates transfer buffers for <paramref name="numberOfMessages"/>.
/// </summary>
/// <param name="numberOfMessages">The number of messages to send.</param>
/// <param name="messageSizeInBytes">Message size in bytes.</param>
/// <param name="transferMode">The transfer mode.</param>
/// <returns>The requested transfer buffer collection.</returns>
public ISpiTransferBufferCollection CreateTransferBufferCollection(int numberOfMessages, int messageSizeInBytes, SpiTransferMode transferMode)
{
var collection = new SpiTransferBufferCollection(numberOfMessages, messageSizeInBytes, transferMode);
foreach (var transferBuffer in collection) {
transferBuffer.BitsPerWord = bitsPerWord;
transferBuffer.Delay = delay;
transferBuffer.Speed = maxSpeed;
}
return collection;
}
/// <summary>
/// Creates a transfer buffer of the given <see paramref="sizeInBytes"/> and copies the connection settings to it.
/// </summary>
/// <param name="sizeInBytes">Memory size in bytes.</param>
/// <param name="transferMode">The transfer mode.</param>
/// <returns>The requested transfer buffer.</returns>
public ISpiTransferBuffer CreateTransferBuffer(int sizeInBytes, SpiTransferMode transferMode)
{
return new SpiTransferBuffer(sizeInBytes, transferMode) {
BitsPerWord = bitsPerWord,
Delay = delay,
Speed = maxSpeed
};
}
/// <summary>
/// Initializes a new instance of the <see cref="SpiTransferBuffer"/> class.
/// </summary>
/// <param name="lengthInBytes">Size of data that shall be transmitted.</param>
/// <param name="transferMode">Specifies read and/or write mode.</param>
public SpiTransferBuffer(int lengthInBytes, SpiTransferMode transferMode) {
if (transferMode == 0) {
throw new ArgumentException("An appropriate transfer mode must be specified (read/write)", "transferMode");
}
mode = transferMode;
if ((TransferMode & SpiTransferMode.Write) == SpiTransferMode.Write) {
txBuf = new ManagedMemory(lengthInBytes);
}
if ((TransferMode & SpiTransferMode.Read) == SpiTransferMode.Read) {
rxBuf = new ManagedMemory(lengthInBytes);
}
var txPtr = ReferenceEquals(Tx, null)
? 0
: unchecked((UInt64) Tx.Pointer.ToInt64());
var rxPtr = ReferenceEquals(Rx, null)
? 0
: unchecked((UInt64) Rx.Pointer.ToInt64());
control.Length = unchecked((uint)lengthInBytes);
control.Tx = txPtr;
control.Rx = rxPtr;
}
/// <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);
}
}
