Contec VPC-2000, Руководство пользователя

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Chapter
６
Software utirity
◆General purpose input
tRasIoRead functions allow you to get the status of General PurposeI/OPort.
Prototype of function
General Purpose Input BYTE tRasIoRead ( BOOL isRead );
Argument
If TRUE is specified, gets the status of the general-purpose input port.
If FALSE is specified, gets the status of the general-purpose output port.
Return
value Returns byte data from a port specified by an argument.
For the general purpose input(isRead=TRUE)
bit 7 6 5 4 3 2 1 0
Meaning - - - - IO4 IO3 IO2 IO1
汎用出力(isRead=FALSE)の場合
bit 7 6 5 4 3 2 1 0
Meaning - - - - DO4 DO3 DO2 DO1
※ DO3(LED1) and DO4(LED2) are allocated to the two front LEDs.
Header file
TinyRAS.h
Inport library TinyRAS.lib
DLL file TinyRAS.dll
The header file and the library file are stored in the place specified when TinyRas is
installed.
（
Initial storage place
：
c:\ Program Files\CONTEC\TinyRAS\
）
Example programming
#include <stdio.h>
#include “TinyRAS.h”
int main ( void ){
BYTE dat=0;
dat = tRasIoRead(TRUE); // Acquiring the state of input port.
printf(“the state of input port %02X\n”, dat);
return 0;
}
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User’s Manual