Hi Klaas, I too am currently experimenting with the I2C driver and I was yesterday finally able to control a simple PCF8574 I/O explander.
My next device will also be a PCF8591 (will use it to convert temperature measurements into digital values). I'll keep you informed on how my progress is on this one. Best rgds, --Geert --- In [email protected], "kaffbeemer" <[EMAIL PROTECTED]> wrote: > > Hi Geert, > > I understood what acme wrote, but that's why I was wondering that > they are using such a solution instead of the existing device driver > solution. > As far as I know from previous UNIX, not LINUX nor embedded LINUX > drivers is that they were running in kernel mode and thus were not > interrupted during their runtime (at least from user applications). > That's why in my opinion the device driver solution is far more > sophisticated than the userspace solution. Although I haven't looked > at the implementation of it. > > What I can say from my own experiences with the PCF8591 in > conjunction with the 'new' device driver is that it seems that the > driver is working properly. > What I seem to have is a problem with the analog inputs. Their > behaviour is strongly dependent on the connected input. Open or > grounded inputs seem to disturb the normal operation. > > So im still investigating and searching for a permanent solution. > > So long, Klaus >
