[ECOS] Serial Testing Problems!

[ECOS] Serial Testing Problems!

[Chris C.]

Hi

I have modified the serial.c in the \ecos\examples. I use it to test the
serial read/write for the EB40. Part of the code is shown below:

cyg_io_handle_t handle;
    Cyg_ErrNo err;
    const char test_string[] = "serial example is working correctly!\n";
    cyg_uint32 len = strlen(test_string);
	unsigned char buffer[16];
	int len1;

    printf("Starting serial example\n");

    err = cyg_io_lookup( "/dev/ser1", &handle );

    if (ENOERR == err) {
        printf("Found /dev/haldiag. Writing string....\n");
		err = cyg_io_read(handle, &buffer[0], &len1);
        err = cyg_io_write( handle, test_string, &len );
    }

I used insight to debug and I found that the function "cyg_io_write" will
call the device driver function "at91eb40_serial_putc" but the
"cyg_io_read" had not call the "at91eb40_serial_getc". Why?

Also, there are some testing programs in the io\serial but some of the
programs need ser_filter to run.  Where can I find it?

Does eCos have any testing programs that are used to test the serial device
driver[read/wirte]? [the testing program will not share the serial port
with GDB]

Thanks! :D
----------------------------------------------------
Chris

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Re: [ECOS] Serial Testing Problems!

[Jonathan Larmour]

"Chris C." wrote:
> 
> Hi
> 
> I have modified the serial.c in the \ecos\examples. I use it to test the
> serial read/write for the EB40. Part of the code is shown below:
> 
> cyg_io_handle_t handle;
>     Cyg_ErrNo err;
>     const char test_string[] = "serial example is working correctly!\n";
>     cyg_uint32 len = strlen(test_string);
>         unsigned char buffer[16];
>         int len1;
> 
>     printf("Starting serial example\n");
> 
>     err = cyg_io_lookup( "/dev/ser1", &handle );
> 
>     if (ENOERR == err) {
>         printf("Found /dev/haldiag. Writing string....\n");
>                 err = cyg_io_read(handle, &buffer[0], &len1);
>         err = cyg_io_write( handle, test_string, &len );
>     }
> 
> I used insight to debug and I found that the function "cyg_io_write" will
> call the device driver function "at91eb40_serial_putc" but the
> "cyg_io_read" had not call the "at91eb40_serial_getc". Why?

Dunno, sorry. No immediate reason I can think of. Note the function name is
at91_serial_getc though.

> Also, there are some testing programs in the io\serial but some of the
> programs need ser_filter to run.  Where can I find it?

In the host tools: cvs co ecos/host
 
You can build the host tools with "./configure ; make"

> Does eCos have any testing programs that are used to test the serial device
> driver[read/wirte]? [the testing program will not share the serial port
> with GDB]

This is what ser_filter is designed to solve - you run ser_filter and tell
it which serial port to use. You then connect from GDB to a TCP port
provided by ser_filter.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine

Re: [ECOS] Serial Testing Problems!

[Jesper Skov]

>>>>> "Jonathan" == Jonathan Larmour <jlarmour@redhat.com> writes:

>> Also, there are some testing programs in the io\serial but some of
>> the programs need ser_filter to run.  Where can I find it?

Jonathan> In the host tools: cvs co ecos/host
 
Jonathan> You can build the host tools with "./configure ; make"

I'm not sure that'll work. Autoconf for ser_filter was (IIRC) disabled
due to some conflicts with the other host tools which I didn't have
time to sort out.

I think it's still possible to invoke make in the
host/tools/ecostest/unix directory and have it DTRT - but it's a long
time since I tried it last, so it may require some hand holding.

Jesper

Re: [ECOS] Serial Testing Problems!

[Jonathan Larmour]

Jesper Skov wrote:
> 
> >>>>> "Jonathan" == Jonathan Larmour <jlarmour@redhat.com> writes:
> 
> >> Also, there are some testing programs in the io\serial but some of
> >> the programs need ser_filter to run.  Where can I find it?
> 
> Jonathan> In the host tools: cvs co ecos/host
> 
> Jonathan> You can build the host tools with "./configure ; make"
> 
> I'm not sure that'll work. Autoconf for ser_filter was (IIRC) disabled
> due to some conflicts with the other host tools which I didn't have
> time to sort out.
> 
> I think it's still possible to invoke make in the
> host/tools/ecostest/unix directory and have it DTRT - but it's a long
> time since I tried it last, so it may require some hand holding.

Works straight off for me, although I didn't test the resulting executable.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine

Re: [ECOS] Serial Testing Problems!

[Jonathan Larmour]

"Chris C." wrote:
> 
> >> Also, there are some testing programs in the io\serial but some of
> >> the programs need ser_filter to run.  Where can I find it?
> 
> Jonathan> In the host tools: cvs co ecos/host
> Jonathan> You can build the host tools with "./configure ; make"
> 
> I tried to build the host tools but there were some errors .Can anyone give
> me the ser_filter? (I use Win2000, Cygwin)

Actually you may already have a binary in the tools/bin subdirectory of
wherever you installed eCos.
 
> When will eCos call the function 'at91_serial_getc' (at91_serial.c)? Does
> cyg_io_read call it?

Eventually, via serial_read in io/serial.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine