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I2C hangs and blocks all tasks depending on it #6

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bitmorse opened this issue May 27, 2016 · 3 comments
Open

I2C hangs and blocks all tasks depending on it #6

bitmorse opened this issue May 27, 2016 · 3 comments
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@traffael
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bug help wanted
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Ship To Antarctica

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@bitmorse
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bitmorse commented May 27, 2016 •
edited by traffael

BNO055 I2C communication can cause problems in that it answers too late or because of other issues. The result is that the I2C driver of TI-RTOS gets blocked forever and as a result all other tasks using I2C. Without BNO055 requests, bug does not appear.
@bitmorse bitmorse added the bug label May 27, 2016
@bitmorse bitmorse added this to the Ship To Antarctica milestone May 29, 2016
@bitmorse
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bitmorse commented Jun 4, 2016

"Without BNO055 requests, bug does not appear." - is this still true?

@traffael
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traffael commented Jul 5, 2016

Yes, still true!

Failed workarounds:

  • call I2C_close and I2C_open (--> segfault)
  • toggle BNO055 reset pin

Not yet tried possible workarounds:

  • try IMU task restart

- try to toggle mainboard reset from EPS (instead of power cycling it. avoids IMU calibration status to be reset to 0 --> ensure no IMU_init is called after this!)

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-- abandoned. receive IMU data from sbc

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