Record TIOPacket
Unit
Declaration
type TIOPacket = record
Description
: Return the results of an I/O request.
See also
- TCommPortDriver
- The base class of an communication port driver.
- TDriverCallBack
- TCommPortDriver.IOCommandASync
- TCommPortDriver.IOCommandSync
Overview
Fields
PacketID:Cardinal; |
WriteIOResult:TIOResult; |
ToWrite:Cardinal; |
Written:Cardinal; |
WriteRetries:Cardinal; |
BufferToWrite:BYTES; |
DelayBetweenCommand:LongInt; |
ReadIOResult:TIOResult; |
ToRead:Cardinal; |
Received:Cardinal; |
ReadRetries:Cardinal; |
BufferToRead:BYTES; |
Res1:TObject; |
Res2:Pointer; |
Description
Fields
PacketID:Cardinal; |
|
Request identification. |
WriteIOResult:TIOResult; |
|
Result of a write command, if exists. If not exists, return iorNone. |
ToWrite:Cardinal; |
|
Number of bytes to write. |
Written:Cardinal; |
|
Number of bytes written. |
WriteRetries:Cardinal; |
|
Number of retries to write ToWrite bytes. |
BufferToWrite:BYTES; |
|
Sequence of bytes to write. Must have at least ToWrite bytes of length. |
DelayBetweenCommand:LongInt; |
|
Delay in milliseconds between the commands of Read and Write. |
ReadIOResult:TIOResult; |
|
Result of a read command, if exists. If not exists, return iorNone. |
ToRead:Cardinal; |
|
Number of bytes to read. |
Received:Cardinal; |
|
Number of bytes received. |
ReadRetries:Cardinal; |
|
Number of retries to read ToRead bytes. |
BufferToRead:BYTES; |
|
Buffer that stores bytes received. Their length is adjusted to ToRead. |
Res1:TObject; |
Res2:Pointer; |
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