Thanks, I'll check it out. BTW, what 2.6 kernel should I use? Should I go for the latest? Thanks, -max > -----Original Message----- > From: Mark M. Hoffman [mailto:mhoffman at lightlink.com] > Sent: Wednesday, December 29, 2004 12:24 AM > To: Maximilian Ott > Cc: sensors at Stimpy.netroedge.com > Subject: Re: Trying to drive some LEDs through I2C > > Hi Max: > > * Maximilian Ott <max at semandex.net> [2004-12-27 22:08:19 -0500]: > > I'm prototyping an appliance type box based on the EPIA-TC board > > > (http://www.viaembedded.com/product/epia_tc_spec.jsp?motherboa > rdId=201). > > This board supposedly has a I2C bus accessible on a connector. > > > > I also built a small board with a few LEDs driven by a TI TPIC2810 > > (8-BIT LED DRIVER WITH I2C INTERFACE) which I would like to > hook up to the > > motherboard and control from a user-space process. The > whole thing will run > > a 2.6 linux kernel. > > > > Could somebody please give me a few pointers to get started. > > It sounds like you already know about I2C and probably SMBus as well. > > On Linux, you'll need a bus driver for your board. Some VIA chipsets > are already supported... you could grab the freshly released 2.9.0 of > the lm_sensors2 package and build the userspace parts (kernel > 2.6 already > has the most up-to-date kernel parts). Then try 'sensors-detect'. > > Assuming you have a working bus driver, the easiest way to access it > for prototyping would be the i2c /dev interface. This requires the > module i2c-dev (if you ran 'sensors-detect' OK, you already have it). > > Take a look at i2c-dev.h in the kernel headers if you want to > program in > in C. For prototyping, it would be much easier to re-use the Perl > bindings which can be found in sensors-detect. Or if you > prefer Python, > lucky you: I just now published a module for that. The announcement > hasn't appeared in the mail archive yet, but you will eventually see > it near the bottom of this page (which is good to browse anyway): > > http://archives.andrew.net.au/lm-sensors/ > > Regards, > > -- > Mark M. Hoffman > mhoffman at lightlink.com > >
