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Type: Posts; User: blahfoo

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    Solved, thanks nox771. i2c_t3 works, no lockup.

    So I did more homework after seeing the related thread (https://forum.pjrc.com/threads/21680-New-I2C-library-for-Teensy3) from nox771. Loaded up i2c_t3 library from github, edited Adafruit ft6206...
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    Not hardware problem.

    I'm not sure who you are replying to, headroom. Me, I'm not having a noise problem now, that was fixed long ago. But noise did test the driver and showed that it did not time out on an I2C comm...
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    Wire I2C driver lockup reproduction procedure

    Allright, I ran into this I2C driver lockup-instead-of-timeout problem again in another context and I have a reproduction procedure for you to try.
    1. Set up a program talking to an external I2C...
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    OK thanks, I will see if I can make it happen by...

    OK thanks, I will see if I can make it happen by getting rid of pull-ups entirely in a low-noise situation, or by feeding a minor bit of noise in. Since raising the pull-up current fixed it I...
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    No need to test anything for me, I'm after the...

    No need to test anything for me, I'm after the driver bug even though I have the hardware problem fixed. Really I'm hoping someone familiar with the Wire driver code itself knows how it could lock...
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    WIRE library I2C lockups on Teensy 3.1

    In a nasty EMI environment, I've found my T3.1 based gadget needed stronger pull-up resistors on its I2C bus. Turns out the I2C driver locked up regularly, resulting in the system being pulled out...
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