[linux-dvb] Reverse enginnering using i2c protocol analysers

Steven Toth stoth at linuxtv.org
Mon Aug 25 18:11:20 CEST 2008


Steven Toth wrote:
> Robin Perkins wrote:
>> Does anyone have any experiences using i2c logic analysers to work out 
>> how cards work ?
>> Is it an effective reverse enginering method ?
>> I was looking for them online but most of them seem pretty expensive 
>> (~$4000) however I found the Total Phase Beagle 
>> <http://www.totalphase.com/products/beagle_ism/> for about $300. Has 
>> anyone else tried this adapter out ? (It appears to have software for 
>> Linux, OS X and Windows which seems pretty good.)
> 
> A parallel port on a spare linux box, two wires and a copy of lmilk does 
> it for me. < $10.

Just for the record, it won't go above 100KHz so while it works on 
almost everything I've ever used it on ... at somepoint of someone wants 
to run their i2c bus at > 100Khz, this won't work.

- Steve



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