Re: [ts-7000] Com2 Problem TS-7250

[Larry <>]

Sounds like you have a flow control problem
You're enabling hardware flow control, so the wires must be connected properly
and the GPS must be configured for HW flow control as well.
Check if the 7260 port you're using supports RTS and CTS.

Larry
cspin_2001 wrote:

I am still getting up to speed on the TS-7260. I am trying to read a
GPS data from the serial port. It reads the data from the first
burst coming from the GPS (several messages). I get $GPSRMC and a
few other messages and then it pauses for a while and then just
keeps outputing "buff= ". I would like to read the stream
continuosly. Any idea what is screwed up?

Thanks
Charlie

#include <fcntl.h>
#include <termios.h>
#include <stdio.h>

#define BAUDRATE B9600
#define MODEMDEVICE "/dev/ttyAM1"
#define _POSIX_SOURCE 1 /* POSIX compliant source */

main()
{
int fd;
struct termios oldtio,newtio;
char buf[512];

fd = open(MODEMDEVICE, O_RDWR | O_NOCTTY );
if (fd <0) {perror(MODEMDEVICE); exit(-1); }
tcgetattr(fd,&oldtio); /* save current serial port settings */
bzero(&newtio, sizeof(newtio)); /* clear struct for new port
settings */
newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR | ICRNL;
newtio.c_oflag = 0;
newtio.c_lflag = ICANON;
tcflush(fd, TCIFLUSH);
tcsetattr(fd,TCSANOW,&newtio);

while (1)
{
read(fd,buf,512);
printf("buf = %s\n" ,buf);
}

tcsetattr(fd,TCSANOW,&oldtio); // restore the old port settings
}