public void Read(Speed speed, UInt16 address, byte[] buffer, int offset = 0, UInt16 length = 0)
{
lock (Daq) {
int byteCount = buffer.Length;
if (length != 0 && length < buffer.Length)
{
byteCount = length;
}
if (byteCount > offset)
{
byteCount -= offset;
}
while (byteCount != 0)
{
UInt16 byteChunk = (UInt16)Math.Min(MaxByteChunk, byteCount);
BasicTypeSerializer.Put(SendContext, (byte)NwazetDAQ.Command.I2c);
BasicTypeSerializer.Put(SendContext, (byte)Command.Read);
BasicTypeSerializer.Put(SendContext, (byte)speed);
BasicTypeSerializer.Put(SendContext, (UInt16)address);
BasicTypeSerializer.Put(SendContext, byteChunk);
Daq.Execute();
Daq.Receive();
CheckResult();
ReceiveContext.CopyBytesFromInternalBuffer(buffer, offset, byteChunk);
offset += byteChunk;
byteCount -= byteChunk;
}
}
}
public UInt16 ReadFile(UInt16 fileId, byte[] buffer, int bytesToRead)
{
lock (Daq) {
int byteCount = bytesToRead;
UInt16 bytesRead = 0;
UInt16 totalBytesRead = 0;
int offset = 0;
while (byteCount != 0)
{
UInt16 byteChunk = (UInt16)Math.Min(MaxByteChunk, byteCount);
BasicTypeSerializer.Put(SendContext, (byte)NwazetDAQ.Command.FileSystem);
BasicTypeSerializer.Put(SendContext, (byte)Command.ReadFile);
BasicTypeSerializer.Put(SendContext, fileId);
BasicTypeSerializer.Put(SendContext, byteChunk);
Daq.Execute();
Daq.Receive();
CheckResult();
bytesRead = BasicTypeDeSerializer.Get(ReceiveContext, bytesRead);
ReceiveContext.CopyBytesFromInternalBuffer(buffer, offset, bytesRead);
totalBytesRead += bytesRead;
offset += bytesRead;
byteCount -= bytesRead;
if (bytesRead < byteChunk)
{
break;
}
}
return(totalBytesRead);
}
}
public UsartReadResult Read(byte[] buffer, int offset = 0, int length = 0, UInt32 totalTimeoutMs = 0, bool useTerminator = false, byte terminator = 0)
{
lock (Daq) {
var result = new UsartReadResult();
int byteCount = buffer.Length;
if (length != 0 && length < buffer.Length)
{
byteCount = length;
}
if (byteCount > offset)
{
byteCount -= offset;
}
while (byteCount != 0)
{
UInt16 byteChunk = (UInt16)Math.Min(MaxByteChunk, byteCount);
BasicTypeSerializer.Put(SendContext, (byte)NwazetDAQ.Command.Usart);
BasicTypeSerializer.Put(SendContext, (byte)Command.Read);
BasicTypeSerializer.Put(SendContext, byteChunk);
BasicTypeSerializer.Put(SendContext, totalTimeoutMs);
BasicTypeSerializer.Put(SendContext, (byte)((useTerminator) ? 1 : 0));
BasicTypeSerializer.Put(SendContext, (byte)terminator);
Daq.Execute();
Daq.Receive();
byte returnCode = BasicTypeDeSerializer.Get(ReceiveContext);
UInt16 bytesRead = 0;
bytesRead = BasicTypeDeSerializer.Get(ReceiveContext, bytesRead);
ReceiveContext.CopyBytesFromInternalBuffer(buffer, offset, bytesRead);
result.TotalBytesRead += bytesRead;
offset += bytesRead;
byteCount -= bytesRead;
switch ((Result)returnCode)
{
case Result.InvalidParameter:
throw new UsartException((int)returnCode, ResultStrings[returnCode]);
case Result.TerminatorReceived:
result.TerminatorReceived = true;
return(result);
case Result.Timeout:
result.TimedOut = true;
return(result);
}
}
return(result);
}
}