PNI TCM 2.6 - Manual (Page 44)

PNI Sensor Corporation DOC#1009269 r11
TCM2.5 & TCM2.6 User Manual Page 44 of 49
TCM2.5/2.6 Code Example
Wake C program
/* wake.c - Sample program to wake the TCM2.5/2.6 after is has been put
in sleep mode */
/* Wake toggles the RTS line to give the TCM2.5/2.6 a (falling) edge */
/* P Milford 1/10/96 */
/* Usage: wake 1 - wakes a tcm2.5/2.6 on com port 1 (default) */
/* wake 2 - wakes a tcm2.5/2.6 on com port 2, etc. */
#include
#include /* for atoi */
#include /* For inp/out */
/* Addresses in IO space of the serial port base addresses */
#define PORT1 0x3F8
#define PORT2 0x2F8
#define PORT3 0x3E8
#define PORT4 0x2E8
#define MCR 4 /* Offset to the Modem control register */
#define RTS 2 /* RTS is bit 2 of the MCR*/
int main( int argc, char *argv[])
{
int tmp, port=PORT1; /* Defaul to serial port 1 */
/* If there are args, look at the first one only */
if (argc == 2 ) { /* Figure out which serial port to use */
switch (atoi(argv[ 1 ])) {
case 1 : port = PORT1; break ;
case 2 : port = PORT2; break ;
case 3 : port = PORT3; break ;
case 4 : port = PORT4; break ;
others: port = PORT1;
};
};
tmp = inp(port+MCR); /* Read current line status */
outp(port+MCR, tmp ^ RTS); /* Toggle the RTS line */
outp(port+MCR, tmp); /* Restore the RTS line */
return 0 ;
};