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Cuav v5 i2c communication error

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Hello,

I need some insight about a problem on the I2c 2 bus communication.

We have been able to use this bus for sometime to communicate with our sensor but for an unknown reason we are not able to get I2C requests from I2C 2 bus port.

It does work from I2C 1 bus port with a cable we made but that is used by gps originally.

We couldnt make i2c 3/4 work either.

So we are kind of out of ideas about what to do and need some guidance.

Or the autopilot is broken.

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