--- In "Harold" wrote:
>
> Maybe the RTS polarity is inverted?
> Have you tried setting RTS low to transmit and setting RTS high to receive?
>
>
> --- In "khouryelie" wrote:
> >
> > thank you Jim for your reply,
> >
> > 1. this is my actual code
> >
> >
> > int main(void)
> > {
> >
> > int fd;
> > int status,val,prev;
> >
> > fd = open("/dev/tts/5", O_RDWR | O_SYNC);
> > if (fd == -1)
> > {
> > perror("Error opening file for writing");
> > }
> >
> > ioctl(fd, TIOCMGET, &status);
> >
> > prev = TIOCM_RTS;
> > status &= ~TIOCM_RTS;
> >
> > val=(ioctl(fd, TIOCMSET, &status));
> > if (val != 0)
> > printf("Error ioctl");
> >
> > 2. i am actually always having negative 5 6 on rts
> >
> > can you guide me from here ?
> >
> > why can i send if it was at start negative 5 at RTS
> > it makes no sens
> >
>
hello harold,
yes i did but it did not work either
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