IRC log for #openjtag on 20091213

02:12.34*** join/#openjtag roxfan (i=dunno@208.72-242-81.adsl-dyn.isp.belgacom.be)
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15:07.45wookey_anyone here know a good (cheap) tool for connecting to an I2C Bus (100Khz) and logging packets?
15:08.28wookey_I need to hack a device at the I2C level and am hoping someone does a cheapo interface to USB or something. Not found anything under 300 euro so far
15:57.12Zoiahwookey_: http://www.diolan.com/i2c/u2c12.html
15:57.18Zoiahwookey_: I use this and I'm happy with it.
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16:04.25methril_homewookey_: what OS do you have? not all of them has Linux support (for example) and only a few has mac support
16:05.31wookey_methril_home: I have linux of course
16:06.49methril_homewookey_: i know this DIY http://minila.sourceforge.net/
16:07.14methril_homeit could be cheap
16:07.28wookey_Zoiah: price is good, but the info suggests it is for writing to the bus rather than reading from it, but I guess any practical device actually does both?
16:08.10methril_homehttp://www.sparkfun.com/commerce/product_info.php?products_id=8938
16:08.35methril_homethey promised Linux support, but i didn't see it yet
16:08.45Zoiahwookey_: it does both.
16:09.26wookey_OK, cheers guys - that looks like several plausible solutions
16:09.35ZoiahI used it to read and write the I2C bus on optical transceivers.
16:09.42methril_homeyou're wellcome
16:09.43ZoiahSpecifically the eeprom on it.
16:09.53wookey_I've just spent best part of an hour copying waveform off scope to sample one packet
16:10.33wookey_Which is more than enough to persude me to spend some money on a more efficient scheme :-)
16:10.42ZoiahFor what purpose?
16:10.58wookey_At leasy I've stopped trying to treat the signal as RS484 or RS232, which was my first guess :-)
16:11.04methril_homei'm looking for a scope/data logger & waveform generator all together
16:11.13wookey_It's a Fronius PV inverter
16:11.50wookey_It's output is scret. You have to buy their £300 interface if you want to get any data out of it
16:11.56wookey_Its
16:12.31wookey_I'm trying to work out if we can make practical cheper interfaces (I'm sure we can - it's just a question of how much reverse engineering is needed to get good data
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