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Original question:

TDA4VM: I2C recover when in polling mode

TDA4VM: I2C bus not recover when timeout.

Wall-E
Expert 1706 points
Part Number: TDA4VM

Hi expert,

I'm using psdk 8.00. In my customer board, the i2c6 (sensor i2c) connect to the deserializer. Sometimes deserializer will not release the i2c bus because hardware problem, like the cameras are removed. Then the i2c bus cannot recover. It will keep timeout. Although the hardware problem is resolve.

If you want to reproduce this problem, You can simply short the SCL or SDA to ground. It's same with deserializer.

Regards.

  • 0
    TI__Guru**** 475245 points

    Hi Wall-E,

    Can you please check if API I2C_v1_recoverBus is getting called? After timeout, this API will try to recover bus by resetting it. If it does not recover even after this reset, this isn't much we can do from I2C master.

    Regards,

    Brijesh