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Showing content with the highest reputation on 05/12/2019 in all areas

  1. 1 point
    NurseBob

    I2C- MSP-EXP430G2ET

    @Anshikajain Sorry, I've been offline for a couple of days. Not really sure what your question was, but FWIW, I rarely use Energia. That said, when I2C fails in Energia, it's almost always a configuration problem. My suggestion with the video was focused on how they configured the '430 jumpers. The G25 devices were significantly different from the later versions, and many have tripped over jumpers incorrectly configured. In your photo it appears you have the jumper P1.6 placed for the LED, and that was the very first comment in the video - the device will not work in I2C mode if that jumper is placed (at least on the older boards). Looking at the docs, pins P2.1 and P2.2 are designated as SCL and SDA (sw), which I presume means software, not hardware I2C? It's difficult to see in your photo, but it looks like you're using P1.6 and P1.7. So, the video's comments, and this from Energia docs: " When using I2C When using the Hardware I2C (Wire library) with SCL on P1.6 and SDA on P1.7 on the MSP-EXP430G2 you should remove the P1.6 jumper (GREEN LED) so that the LED doesn’t interfere with the I2C SCL signal... " Energia reference I don't know if I'm able to help much further. Please check your jumpers!
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