Date: Fri, 8 Dec 2006 12:49:08 +0100 From: Bernd Walter <ticso@cicely12.cicely.de> To: "M. Warner Losh" <imp@bsdimp.com> Cc: ticso@cicely12.cicely.de, freebsd-arm@freebsd.org, ticso@cicely.de Subject: Re: questions about current RM9200 state Message-ID: <20061208114906.GJ54209@cicely12.cicely.de> In-Reply-To: <20061208104227.GH54209@cicely12.cicely.de> References: <20061208015032.GF54209@cicely12.cicely.de> <20061207.205008.-432839162.imp@bsdimp.com> <20061208104227.GH54209@cicely12.cicely.de>
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On Fri, Dec 08, 2006 at 11:42:28AM +0100, Bernd Walter wrote: > On Thu, Dec 07, 2006 at 08:50:08PM -0700, M. Warner Losh wrote: > > In message: <20061208015032.GF54209@cicely12.cicely.de> > > Bernd Walter <ticso@cicely12.cicely.de> writes: > > : But I can't probe the bus from userland: > > : [56]arm9# ./iic_probe /dev/iic0 > > : - and nothing listed. > > > > twi doesn't support START/STOP ioctls that you use. Hmmm, that's in > > p4 that I've removed them because I never got that working. I also > > think the version in -head isn't the latest, working one. I think you > > do the same thing with a 0 byte transfer. Except we don't detect > > NOACK quite right yet, I'm afraid. I'd expect an error each time you > > tried. > > Ah - Ok, will switch to 0 Byte transfers and retest. iic.c: case I2CWRITE: if (s->count <= 0) { error = EINVAL; break; } Well - it wouldn't work without NOACK detection anyway. -- B.Walter http://www.bwct.de http://www.fizon.de bernd@bwct.de info@bwct.de support@fizon.de
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