I2C hangs and blocks all tasks depending on it

[bitmorse]

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]

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

[traffael]

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!)

[traffael]

-- abandoned. receive IMU data from sbc