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Function COMSendBlockTimed

COMSendBlock sends a block of data to a COM port with a timeout:

unsigned COMSendBlockTimed(int          Port, 
                           const void * Data, 
                           unsigned     Length, 
                           RTKDuration  Timeout);

Parameters

Port

The port for sending.

Data

Pointer to a buffer containing the data to be sent.

Length

The number of bytes in the data buffer to be sent.

Timeout

The timeout in timer ticks for the send operation. The timeout applies to the complete data block.

return value

The number of bytes successfully placed in the send buffer. If the data was transferred to the send buffer completely, Length is returned.

COMSendBlockTimed is similar to function COMSendBlock, but COMSendBlockTimed returns the number of bytes placed in the send buffer without getting a timeout.

Function COMSendBlock

Function COMWaitSendBufferEmpty