[ts-7000] Re: TS-7800 strange tsuart behaviour

["cedric_roussel" <>]

Thanks Michael for your reply,

I've got the same problem with the code you gave me.
Here is the test code I used:

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>

#include <sys/select.h>
#include <unistd.h>

extern void termConfigRaw (int fd, struct termios *saved, int baud_Enum);

#define MAX(a, b) ((a) > (b) ? (a) : (b))
struct termios tty;

#define USAGE    "Usage : terminal dev speed\nwith speed in Kbps\n\0"


/*
 * Serial port initialisation :
 * arg : port, baud rate, number of bits/byte, parity, number of stop bits.
 */
void
port_init (int portfd, char *speed)
{
  speed_t spd;

  /*Seting comu
 nication speed */
  switch (atol (speed))
    {
    case 0:
      spd = B0;
      break;
    case 300:
      spd = B300;
      break;
    case 600:
      spd = B600;
      break;
    case 1200:
      spd = B1200;
      break;
    case 2400:
      spd = B2400;
      break;
    case 4800:
      spd = B4800;
      break;
    case 9600:
      spd = B9600;
      break;
    case 19200:
      spd = B192
 0
 0;
      break;
    case 38400:
      spd = B38400;
      break;
    case 57600:
      spd = B57600;
      break;
    case 115200:
      spd = B115200;
      break;
    case 230400:
      spd = B230400;
      break;
    default:
      printf (USAGE);
      exit (1);
    }

  termConfigRaw (portfd, &tty, spd);
}


int
main (int argc, char **argv)
{
  char c;
  int portfd, n, res;

  fd_set rfds;

  if (argc < 3)
    {
      printf (USAGE);
 &
 n
 bsp;    exit (1);
    }

  /*Openning the serial port in read/write with nodelay mode */
  portfd = open (argv[1], O_RDWR | O_NOCTTY);
  /*Serial port initialisation with the right proprieties */
  port_init (portfd, argv[2]);
  /*Flushing old IO */
  tcflush (portfd, TCIOFLUSH);
  setbuf (stdout, NULL);

  while (1)
    {
      n = 0;
      FD_ZERO (&rfds);

      FD_SET (STDIN_FILENO, &rfds);
      n = MAX (n, STDIN_FILENO);

      FD_SET (portfd, &rfds);
      n = MAX (n, portfd);

      res = select (n + 1, &rfds, NULL, NULL, NULL);

      if (res > 0)
        {
           if (FD_ISSET (portfd, &rfds))
            {
              if (read (portfd, &c, 1) != -1)
                {
                  printf ("%c", c);
                  fflush (stdout);
                }
            }

          if (FD_ISSET (STDIN_FILENO, &rfds))
            {
              if (read
  
 (STDIN_FILENO, &c, 1) != -1)
                {
                  write (portfd, &c, 1);
                }
            }
        }
    }

  close (portfd);
  exit (0);
}

--- In  "Michael" <> wrote:
>
> > Hello there,
> >
> > I'm the owner of a brand new ts7800 board i'd like to use with
> > multiples serial devices. My problem is that i cant get every ports to
> > work. Some are ok and some won't talk...
> > I've tested my ports with a simple loopback wire connecting rx to tx
> > and here are the r
 e
 sults:
> >
> > ttyS0  ok
> > ttyS1  failed
> > ttts0  ok
> > ttts1  ok
> > ttts2  untested
> > ttts3  untested
> > ttts4  failed
> > ttts5  failed
> > ttts6  ok
> > ttts7  ok
> > ttts8  ok
> > ttts9  ok
> >
> > pinout there:
> > http://www.embeddedarm.com/about/resource.php?item=303#uart
> >
> > I'm currently running full distro from microsd slot but I hade the
> > same problem under fastboot...
> > dmesg does not complain and my modules md5 are:
> >
> > fb71d4c375c724551dc7f2f4165a3392
> > /lib/modules/2.6.21-ts/kernel/drivers/serial/tsuart1.ko
> >
> > 7639cb90e387ce7c4f2836a67b61f406
> > /lib/modules/2.6.21-ts/kernel/drivers/serial/tsuart7800.ko
> 
> Those are the latest modules.
> 
> However, it is interesting that you
  
 are seeing a problem with both ttyS1 
> (which is a serial port in the SoC) and ttts3/4 (which are serial ports in 
> the FPGA).
> 
> I assume you using the same identical code to initialize and talk to each 
> port?  It's possible that you might not be completely initializing the 
> termios, you may want to look at this sample code: 
> ftp://ftp.embeddedARM.com/tmp/term.c
> 
> > If you have any idea...
> > Thank you,
> > Cedric.
> 
> 
>  ______   Best Regards,
> |__  __/                  Michael Schmidt
>    ||                   Software Engineer
>    ||echnologic Systems (EmbeddedARM.com)
>    || (480)    16610 East Laser Drive #10
>    |/ 837-5200   Fountain Hills, AZ 85268
>        http://oz.embeddedarm.com/~michael
>

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