From: Dave H. <dhy...@gm...> - 2006-11-10 04:54:59
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Hi Chris, > Unfortunately this is all I've got. What are my options are this point? Well it seems to be a hardware problem of some sort. I put photo of the gumstix board over here: http://www.davehylands.com/gumstix-wiki/i2c/connex-top.jpg I've identified the LTC1633 chip, which sits on the i2c bus. I've also labelled the various pins. Another test you could do is to try is to verify no connectivity between SCL and Gnd (with power off), and if that's the case (no connectivity) try connecting SCL to Vcc while i2ctest is running on the gumstix. You should see the: gumstix: SCL: 1 SDA: 1 If you don't then the problem is on the gumstix board. I also put up this photo: http://www.davehylands.com/gumstix-wiki/i2c/Tweener-i2c.jpg that identifies the i2c stuff on the tweener. Again, check that no continuity exists between Gnd and SCL. Then try connecting SCL to Vcc with i2c-test running. On my gumstix, it comes up like: gumstix: SCL: 0 SDA: 1 and touching SCL to Vcc changes the SCL to 1. if that's the case on yours, then you know that the gumstix side of thinngs is fine. Actually if you perform this second test first and it passes, then there's no need to do te first test mentioned above. You can also repeat the test with just the tweener and robostix. This requires a serial adapter connected to UART-0 on the robostix. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |