[ECOS] Serial Port , Raw Mode using cyg_io_read

[ECOS] Serial Port , Raw Mode using cyg_io_read

[Annamalai Prakash]

Hi List,

 I am working on ARM920T (Integrator) and ecos. I have configured my kernel 
with posix and Serial device drivers.  following options are enabled in my 
config file.

           CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING 
    CYGPKG_IO_SERAIL_TTY
     CYGPKG_IO_SERIAL_TTY_TTY1
    CYGPKG_IO_SERIAL_DEVICES
    CYGPKG_IO_SERIAL_ARM_INTEGRATOR_SERIAL1

       I want to configure my serial port in RAW mode.  i think ecos supports 
two serial port drivers (raw and tty driver). Is there any explicit option to 
specify  for RAW drivers.  I tried to disable (CYGPKG_IO_SERAIL_TTY_TTY1) 
option, i wasnot able to read/write anything from serial port even opened 
successfully.

       I tried to use OPEN call also. i got compilation error due to 
unresolved symbols `O_NDELAY' ,`B115200' ,`CLOCAL' ,`CREAD' . i have 
decleared terminos.h ..

Any lights to move furthur..

Thanks
Prakash

   

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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[Edgar Grimberg]

Hi,

Did you tried to open the /dev/ser0 , /dev/ser1 ? Something like:
   
err = cyg_io_lookup( "/dev/ser1", &fd );

Edgar


Annamalai Prakash wrote:

>Hi List,
>
> I am working on ARM920T (Integrator) and ecos. I have configured my kernel 
>with posix and Serial device drivers.  following options are enabled in my 
>config file.
>
>           CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING 
>    CYGPKG_IO_SERAIL_TTY
>     CYGPKG_IO_SERIAL_TTY_TTY1
>    CYGPKG_IO_SERIAL_DEVICES
>    CYGPKG_IO_SERIAL_ARM_INTEGRATOR_SERIAL1
>
>       I want to configure my serial port in RAW mode.  i think ecos supports 
>two serial port drivers (raw and tty driver). Is there any explicit option to 
>specify  for RAW drivers.  I tried to disable (CYGPKG_IO_SERAIL_TTY_TTY1) 
>option, i wasnot able to read/write anything from serial port even opened 
>successfully.
>
>       I tried to use OPEN call also. i got compilation error due to 
>unresolved symbols `O_NDELAY' ,`B115200' ,`CLOCAL' ,`CREAD' . i have 
>decleared terminos.h ..
>
>Any lights to move furthur..
>
>Thanks
>Prakash
>
>   
>
>  
>


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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[Annamalai Prakash]

On Wednesday 06 July 2005 02:32 pm, you wrote:
> Hi,
>
> Did you tried to open the /dev/ser0 , /dev/ser1 ? Something like:
>
> err = cyg_io_lookup( "/dev/ser1", &fd );

 yes, i tried to open ... it was opened...... but i want to make sure, whether 
it is RAW Mode or TTY Mode.


>
> Edgar

Prakash
>
> Annamalai Prakash wrote:
> >Hi List,
> >
> > I am working on ARM920T (Integrator) and ecos. I have configured my
> > kernel with posix and Serial device drivers.  following options are
> > enabled in my config file.
> >
> >           CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
> >    CYGPKG_IO_SERAIL_TTY
> >     CYGPKG_IO_SERIAL_TTY_TTY1
> >    CYGPKG_IO_SERIAL_DEVICES
> >    CYGPKG_IO_SERIAL_ARM_INTEGRATOR_SERIAL1
> >
> >       I want to configure my serial port in RAW mode.  i think ecos
> > supports two serial port drivers (raw and tty driver). Is there any
> > explicit option to specify  for RAW drivers.  I tried to disable
> > (CYGPKG_IO_SERAIL_TTY_TTY1) option, i wasnot able to read/write anything
> > from serial port even opened successfully.
> >
> >       I tried to use OPEN call also. i got compilation error due to
> >unresolved symbols `O_NDELAY' ,`B115200' ,`CLOCAL' ,`CREAD' . i have
> >decleared terminos.h ..
> >
> >Any lights to move furthur..
> >
> >Thanks
> >Prakash

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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[Andrew Lunn]

On Wed, Jul 06, 2005 at 02:35:27PM +0530, Annamalai Prakash wrote:
> On Wednesday 06 July 2005 02:32 pm, you wrote:
> > Hi,
> >
> > Did you tried to open the /dev/ser0 , /dev/ser1 ? Something like:
> >
> > err = cyg_io_lookup( "/dev/ser1", &fd );
> 
>  yes, i tried to open ... it was opened...... but i want to make sure, whether 
> it is RAW Mode or TTY Mode.

The device does not have modes like in unix. There are different
devices for each mode. /dev/ser0 is the lowest level and gives you
direct access to the serial driver. /dev/tty0 is the next level up and
gives you a basic tty level similar to cooked mode. Then there is
/dev/termios0 which is layed on top of /dev/tty0.

        Andrew

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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[Edgar Grimberg]

Annamalai Prakash wrote:

>On Wednesday 06 July 2005 02:32 pm, you wrote:
>  
>
>>Hi,
>>
>>Did you tried to open the /dev/ser0 , /dev/ser1 ? Something like:
>>
>>err = cyg_io_lookup( "/dev/ser1", &fd );
>>    
>>
>
> yes, i tried to open ... it was opened...... but i want to make sure, whether 
>it is RAW Mode or TTY Mode.
>
>  
>
If you want raw mode, you should open /dev/ser0 and if you want tty use 
/dev/tty0 . You cand find the name of the devices in the ecos.ecc file 
of your build tree.
You can imagine some test case, something like sending an out of the 
range for tty char over the serial port and trying to read it from your 
PC. If you have a tty driver you will get nothing on the serial of the 
PC, else you will get the char. First of all, be sure that the serial on 
your Integrator works.

Edgar

>>Edgar
>>    
>>
>
>Prakash
>  
>
>>Annamalai Prakash wrote:
>>    
>>
>>>Hi List,
>>>
>>>I am working on ARM920T (Integrator) and ecos. I have configured my
>>>kernel with posix and Serial device drivers.  following options are
>>>enabled in my config file.
>>>
>>>          CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
>>>   CYGPKG_IO_SERAIL_TTY
>>>    CYGPKG_IO_SERIAL_TTY_TTY1
>>>   CYGPKG_IO_SERIAL_DEVICES
>>>   CYGPKG_IO_SERIAL_ARM_INTEGRATOR_SERIAL1
>>>
>>>      I want to configure my serial port in RAW mode.  i think ecos
>>>supports two serial port drivers (raw and tty driver). Is there any
>>>explicit option to specify  for RAW drivers.  I tried to disable
>>>(CYGPKG_IO_SERAIL_TTY_TTY1) option, i wasnot able to read/write anything
>>>from serial port even opened successfully.
>>>
>>>      I tried to use OPEN call also. i got compilation error due to
>>>unresolved symbols `O_NDELAY' ,`B115200' ,`CLOCAL' ,`CREAD' . i have
>>>decleared terminos.h ..
>>>
>>>Any lights to move furthur..
>>>
>>>Thanks
>>>Prakash
>>>      
>>>
>
>  
>


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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[aprakash]

Ok. Thanks andrew...

      Is there any function or call to know, howmany bytes available to read in my serial buffer ?. 

Thanks
Prakash


----- Original Message -----
From: Andrew Lunn <andrew@lunn.ch>
Date: Wednesday, July 6, 2005 3:00 pm
Subject: Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

> On Wed, Jul 06, 2005 at 02:35:27PM +0530, Annamalai Prakash wrote:
> > On Wednesday 06 July 2005 02:32 pm, you wrote:
> > > Hi,
> > >
> > > Did you tried to open the /dev/ser0 , /dev/ser1 ? Something like:
> > >
> > > err = cyg_io_lookup( "/dev/ser1", &fd );
> > 
> >  yes, i tried to open ... it was opened...... but i want to make 
> sure, whether 
> > it is RAW Mode or TTY Mode.
> 
> The device does not have modes like in unix. There are different
> devices for each mode. /dev/ser0 is the lowest level and gives you
> direct access to the serial driver. /dev/tty0 is the next level up and
> gives you a basic tty level similar to cooked mode. Then there is
> /dev/termios0 which is layed on top of /dev/tty0.
> 
>        Andrew
> 


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Re: [ECOS] Serial Port , Raw Mode using cyg_io_read

[Andrew Lunn]

On Wed, Jul 06, 2005 at 03:06:33PM +0500, aprakash@tataelxsi.co.in wrote:
> Ok. Thanks andrew...
> 
>       Is there any function or call to know, howmany bytes available to read in my serial buffer ?. 

Yes, it is described in the documentation, which you might want to
read.

http://ecos.sourceware.org/docs-latest/ref/io-serial-driver-details.html

        Andrew

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