[ECOS] Problems with cyg_io_read

[Giri Raja <giri_amf at yahoo dot com>]

Hi,
   Initially I wrote a small program that displays a
test string on /dev/haldiag and /dev/ser1. the
/dev/ser1 was connected to a windows machine with
hyperterminal and the /dev/haldiag was basically a gdb
session from a linux machine. This setup worked and I
was able to see the test string on the hyperterminal.
But then I tried to do a cyg_io_read on the /dev/ser1.
I typed a few characters on the hyperterminal but the
read call is just blocked. 
I also tried minicom instead of the hyperterminal, but
minicom wouldn't connect properly to the /dev/ttyS1
when gdb session is on, and vice versa too.
Can anybody please clarify me on what I'm doing wrong?

I have attached my code below.

Thanks.

Giri.

/********* code snippet ***************/

int main (void) {
        cyg_io_handle_t serialA;
        Cyg_ErrNo errA;
        cyg_io_handle_t serialB;
        Cyg_ErrNo errB;

        const char test_string[] = "serial A  to
gdb\n";
        const char test_string2[10];
        cyg_uint32 len = strlen(test_string);
        cyg_uint32 len2 = 2;
        printf("Starting serial example\n");
        errA = cyg_io_lookup( "/dev/haldiag", &serialA
);

        if (ENOERR == errA)   {
                printf("Found /dev/haldiag. Writing
string....\n");
       }

        errB = cyg_io_lookup( "/dev/ser1", &serialB );
        if (ENOERR == errB)  {
                printf("Found /dev/ser1 Writing
string....\n");
        }

        printf("starting to errB\n");
cyg_io_read(serialB, &test_string2, &len2);
        printf("the string is  %s\n", test_string2);
read\n");

return 0;

}





	
		
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