Measurement-computing CB-NAP-7000P Manual de usuario descargar pdf (Pagina 12)

4 UART.DLL for Windows 95/NT

There are six DLL functions provided in the UART.DLLs. This section briefly describes these functions and the

various parameters used in each.

4.1 Open_Com

z Description:

This DLL will initialize the COM port. This DLL must be called once before the other DLLs are called to

send/receive command.

z Syntax:

WORD Open_Com(char cPort, DWORD dwBaudRate, char cData, char cParity, char cStop)

z Input Parameter:

cPort: 1=COM1, 2=COM2, 3=COM3, 4=COM4, others = invalidate

dwBaudRate: 1200/2400/4800/9600/19200/38400/57600/115200

cData: 5/6/7/8 data bit

cParity: 0=NonParity, 1=OddParity, 2=EvenParity

cStop: 0=1-stop, 1=1.5-stp, 2=2-stop

NOTE: cData=8, cParity=0, cStop=0 for CB-7000 modules

z Return Value:

NoError = OK

others = Error code, refer to I7000.H

4.2 Close_Com

z Description:

This DLL will free all the resources used by Open_Com. This DLL must be called before the program exit. The

Open_Com will return error message if the program exit without calling Close_Com function.

z Syntax:

WORD Close_Com(char cPort)

z Input Parameter:

cPort : 1=COM1, 2=COM2, 3=COM3, 4=COM4, others = invalidate

z Return Value:

NoError = OK

others = Error code, refer to I7000.H

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Measurement-computing CB-NAP-7000P Manual de usuario Pagina 12