hard20 pts · first answer countsi2chardware-debugging

I2C bus stuck after reset

If the MCU resets in the middle of an I2C read, SDA sometimes stays low forever and every transfer fails. What is the standard recovery?

A.Increase the I2C clock speedB.Add bigger pull-up resistorsC.Change the slave addressD.Switch the pins to GPIO and toggle SCL up to 9 times until the slave releases SDA, then send a STOP

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I2C bus stuck after reset

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