In order to configure the COM port a pointer on an array of ⇘ COM.PARAMETER is transmitted. The array contains pairs of parameter IDs and associated values corresponding to the configuration parameters.
These constants depend on the platform and the implementation. The following constants are Windows specific in terms of their employment within the implementation of SysCom. The table indicates which member of the Windows structure DCB the parameter is assigned to.
|
Id |
Name of CAA.Parameter_Constants |
corresponds to DCB value |
|
0x00000001 |
udiPort |
Port number |
|
0x00000002 |
udiStopBits |
StopBits |
|
0x00000003 |
udiParity |
Parity |
|
0x00000004 |
udiBaudrate |
Baudrate |
|
0x00000005 |
udiTimeout |
Timeout |
|
0x00000006 |
udiBufferSize |
Buffersize of the serial interface |
|
0x00000007 |
udiByteSize |
Number of data bits/BYTE, 4-8 |
|
0x00000008 |
udiBinary |
binary mode, no EOF check |
|
0x00000009 |
udiOutxCtsFlow |
CTS handshaking on output |
|
0x0000000A |
udiOutxDsrFlow |
DSR handshaking on output |
|
0x0000000B |
udiDtrControl |
DTR Flow control |
|
0x0000000C |
udiDsrSensitivity |
DSR Sensitivity |
|
0x0000000D |
udiRtsControl |
Rts Flow control |
|
0x0000000E |
udiTXContinueOnXoff |
XOFF continues Tx |
|
0x0000000F |
udiOutX |
XON/XOFF out flow control |
|
0x00000010 |
udiInX |
XON/XOFF in flow control |
|
0x00000011 |
udiXonChar |
Tx AND Rx XON character |
|
0x00000012 |
udiXoffChar |
Tx AND Rx XOFF character |
|
0x00000013 |
udiXonLim |
Transmit XON threshold |
|
0x00000014 |
udiXoffLim |
Transmit XOFF threshold |
udiPort: Port, for example 1 for COM1
udiTimeout: Device timeout in ms
udiBufferSize: Size of device buffer