[ECOS] Serial problem on EB40

[ECOS] Serial problem on EB40

[Daniel.Andersson]

Hi,

I have a quite strange problem with my serial port (using a EB40 board). I
can get a handle to the port using the lookup function but when i am trying
to make any calls to it (like cyg_io_set_config) then i get a -EDEVNOSUPP in
return (see clip below). It looks like the serial port isn't setup right in
the DEVTAB since the functioncall "t->handlers->set_config" in iosys.c
doesn't work. Any clues of what the problem maigt be?

Regards, Daniel

---clip from iosys.c----
273	if (!t->handlers->set_config) {
274	        return -EDEVNOSUPP;
275	    }
---end clip from iosys.c----


-----clip-----
	//Find device
	err = cyg_io_lookup("/dev/ser0",&serial_handle );
	if (ENOERR != err) {
		serial_handle = 0; //ERROR
	}

	//Set up device
	//ser_info.baud = CYGNUM_SERIAL_BAUD_9600;
	ser_info.baud = CYGNUM_SERIAL_BAUD_38400;
	ser_info.stop = CYGNUM_SERIAL_STOP_1;
	ser_info.parity = CYGNUM_SERIAL_PARITY_EVEN;
	ser_info.word_length = CYGNUM_SERIAL_WORD_LENGTH_8;
	ser_info.flags = CYG_SERIAL_FLAGS_DEFAULT;

	config_len = sizeof(ser_info);

	err = cyg_io_set_config(serial_handle,
		CYG_IO_SET_CONFIG_SERIAL_INFO,
		&ser_info,
		&config_len);
	if (ENOERR != err) {
		serial_handle = 0; //ERROR
	}
	//TBD Until new OS arrives in a couple of days DBO 010629
	HAL_WRITE_UINT32(0xfffd0000, 0x50);


	config_len = sizeof(cyg_uint32);	
	//No blocking when read
	blocking_val = 0;
	err = cyg_io_set_config(serial_handle,
		CYG_IO_SET_CONFIG_SERIAL_READ_BLOCKING,
		&blocking_val,
		&config_len);
	if (ENOERR != err) {
		serial_handle = 0; //ERROR
	}

	// Blocking when write
	blocking_val = 1;
	err = cyg_io_set_config(serial_handle,
		CYG_IO_SET_CONFIG_SERIAL_WRITE_BLOCKING,
		&blocking_val,
		&config_len);
	if (ENOERR != err) {
		serial_handle = 0; //ERROR
	}

----clip end----

[ECOS] MLT structure files

[SEBASTIEN ANDRE]

I need to adjust the memoty layout of the reference board PID for our custom
board !!
Si i try to edit mlt files and h files in pkgconf !! but
i don't have exactly structure of it and i don't know sense of all values !!

I'm under linux host developpement and if someone can give me the scheme of
theses
files i appreciate it !! or a tool under linux that can generate easily these
files.

I find on redhat home site structure of CDL files but not for MLT :-(

Thx a lot
best regards.

Sebastien.

Re: [ECOS] MLT structure files

[Jonathan Larmour]

SEBASTIEN ANDRE wrote:
> 
> I need to adjust the memoty layout of the reference board PID for our custom
> board !!
> Si i try to edit mlt files and h files in pkgconf !! but
> i don't have exactly structure of it and i don't know sense of all values !!
> 
> I'm under linux host developpement and if someone can give me the scheme of
> theses
> files i appreciate it !! or a tool under linux that can generate easily these
> files.
> 
> I find on redhat home site structure of CDL files but not for MLT :-(

Unfortunately there isn't yet a way to graphically edit the MLT on Linux.
If you would be interested in such features in the new Linux configuratino
tool, they could be expedited by contracting Red Hat to complete it for
you. You could also get full support, and training too. Contact
ecos-info@redhat.com if you're interested.

If you want to hand edit them, you only need to edit the .ldi and .h files,
not the .mlt files which are only used by the graphical tool.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
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Re: [ECOS] Serial problem on EB40

[Jesper Skov]

>>>>> "Daniel" == Daniel Andersson <Daniel.Andersson@combitechsystems.com> writes:

Daniel> Hi, I have a quite strange problem with my serial port (using
Daniel> a EB40 board). I can get a handle to the port using the lookup
Daniel> function but when i am trying to make any calls to it (like
Daniel> cyg_io_set_config) then i get a -EDEVNOSUPP in return (see
Daniel> clip below). It looks like the serial port isn't setup right
Daniel> in the DEVTAB since the functioncall "t->handlers->set_config"
Daniel> in iosys.c doesn't work. Any clues of what the problem maigt
Daniel> be?

You should have a look at the serial driver code.

Jesper

RE: [ECOS] Serial problem on EB40

[Daniel.Andersson]

Do you mean any special part?

The thing that makes me a bit confused is that i get a valid handle back
from the lookup function but when i try to use it then I can't.....This
indicates that something is wrong in the setup of the "handles". In my
serial file i have the following:

DEVTAB_ENTRY(at91_serial_io0,
	     CYGDAT_IO_SERIAL_ARM_EB01_SERIAL0_NAME,
	     0,                    // Does not depend on a lower level
interface
	     &cyg_io_serial_devio, //&serial_devio,
	     at91_serial_init,
	     at91_serial_lookup,     // Serial driver may need initializing
	     &at91_serial_channel0

....which seems to be in every serial device setup. However, since i can't
get by the "t->handlers->set_config" then something must be wrong in the
"cyg_io_serial_devio"-part, am i write? Where do we have the connection
between the "cyg_io_serial_devio" and my actual set_config function. I
assume that this is through the funs? My funs table looks like this:

static SERIAL_FUNS(at91_serial_funs,
		   at91_serial_putc,
		   at91_serial_getc,
		   at91_serial_set_config,
		   at91_serial_start_xmit,
		   at91_serial_stop_xmit
    );

....and the functions they all exists in my serial file. Have i missed
anything that might cause this problem?

Regards, Daniel


> -----Original Message-----
> From: Jesper Skov [ mailto:jskov@cambridge.redhat.com ]
> Sent: den 11 juli 2001 09:21
> To: Andersson Daniel
> Cc: ecos-discuss@sourceware.cygnus.com
> Subject: Re: [ECOS] Serial problem on EB40
> 
> 
> >>>>> "Daniel" == Daniel Andersson 
> <Daniel.Andersson@combitechsystems.com> writes:
> 
> Daniel> Hi, I have a quite strange problem with my serial port (using
> Daniel> a EB40 board). I can get a handle to the port using the lookup
> Daniel> function but when i am trying to make any calls to it (like
> Daniel> cyg_io_set_config) then i get a -EDEVNOSUPP in return (see
> Daniel> clip below). It looks like the serial port isn't setup right
> Daniel> in the DEVTAB since the functioncall "t->handlers->set_config"
> Daniel> in iosys.c doesn't work. Any clues of what the problem maigt
> Daniel> be?
> 
> You should have a look at the serial driver code.
> 
> Jesper
> 

Re: [ECOS] Serial problem on EB40

[Jesper Skov]

>>>>> "Daniel" == Daniel Andersson <Daniel.Andersson@combitechsystems.com> writes:

Daniel> ...and the functions they all exists in my serial file. Have i
Daniel> missed anything that might cause this problem?

Not that I could see from the snippets. I suggest you dig in with GDB.

Jesper