Argox PA-20 Programming Guide Manual do Utilizador descarregar pdf (Página 91)

PT-20 Programming Guide

Communication Ports

clear_com

Purpose：

Clear receive buffer

Syntax：

void clear_com(int port);

Example call：

clear_com(1);

Includes：

#include “SDK.h ”

Description：

This routine is used to clear all data stored in the receive buffer. This can be

used to avoid mis-interpretation when overrun or other error occurred. Use

the argument “port” as the connect port which is chosen to open . You can

choose 1(RS232).

Returns：

None

close_com

Purpose：

To close specified communication port

Syntax：

void close_com(int port);

Example call：

close_com(1);

Includes：

#include “SDK.h ”

Description：

The close_com disables the communication port specified. Use the

argument “port” as the connect port which is chosen to open . You can

choose 1(RS232).

Returns：

None

com_cts

Purpose：

Get CTS level

Syntax：

int close_com(int port);

Example call：

if (com_cts(1) = = 0) _printf(“COM 1 CTS is space);

else _printf(“COM 1 CTS is mark”);

Includes：

#include “SDK.h ”

Description：

This routine is used to check current CTS level. Use the argument “port” as

the connect port which is chosen to open. Now we only can choose

1(RS232).

Returns：

1 : allow to deliver

0 : not allow to deliver

com_eot

Purpose：

To see if any COM port transmission in process (End Of Transmission)

Syntax：

int com_eot(int port);

Example call：

while (com_eot(1) != 0x00); write_com(1,”NEXT STRING”);

Includes：

#include “SDK.h ”

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