This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Serial ports on SA-1100


On Wed, Oct 30, 2002 at 03:55:48PM -0700, Schumacher, Gordon wrote:
> I have an custom-port SA-1100 based system which appears to be (otherwise)
> functioning properly.  I'm trying to do some serial I/O in my main()
> function.  I've tried reading and writing data to either /dev/ttydiag
> (pointed to port 0) or to /dev/ser1, but in both cases the cyg_io_lookup
> works fine, and cyg_io_write and cyg_io_read return -EDEVNOSUPP (-202).

Probably the simplist way to track down this problem is to single step
you way through the write call on /dev/ser1. When you get to a return
-EDEVNOSUPP you should know what the problem is.Don't try this on
/dev/ttydiag, or you get into the problem to debugging the serial port
the debug info is passed over...

    Andrew

-- 
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]