TeamForge : Post

Forum Topic - write to /dev/ser with EIO error:

View: as

Pavol Kycina

02/25/2010 9:26 AM

post48285

Hello,

I have encountered a repeatable situation where write to /dev/ser returns with -1 and errno is set to EIO.

Any idea what could have gone wrong?

Thanks, PKY

Pavol Kycina

03/01/2010 7:21 AM

post48489

Re: write to /dev/ser with EIO error

Anyone with access to the source files of libiochar? 
In devc-ser8250 I haven't found anything about EIO.

Thanks, PKY

> Hello,
> 
> I have encountered a repeatable situation where write to /dev/ser returns with
>  -1 and errno is set to EIO.
> 
> Any idea what could have gone wrong?
> 
> Thanks, PKY

John Garvey(deleted)

03/04/2010 12:57 PM

post48828

Re: write to /dev/ser with EIO error

> Anyone with access to the source files of libiochar? 
> In devc-ser8250 I haven't found anything about EIO.

Is it a sticky EIO (ie keeps happenign on every subsequent write)?  The only explicit EIO I found in io-char is the 
implementation of the POSIX "modem disconnect" requirement.  Have you tried "stty +clocal" to disable this sort of 
processing ...

Pavol Kycina

03/08/2010 4:51 AM

post48982

Re: write to /dev/ser with EIO error

> > Anyone with access to the source files of libiochar? 
> > In devc-ser8250 I haven't found anything about EIO.
> 
> Is it a sticky EIO (ie keeps happenign on every subsequent write)?  The only 
> explicit EIO I found in io-char is the implementation of the POSIX "modem 
> disconnect" requirement.  Have you tried "stty +clocal" to disable this sort 
> of processing ...

It keeps returning EIO until I do a new open to this device.

No, I haven't tried stty +clocal, I will try it.

Thanks, PKY

Return