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If Hang up I2C interface of the LIS2DH

BBQ
Associate II

If Hang up I2C interface of the LIS2DH, How can i reset the device except VDD OFF/ON operation?

I am considering to send 9-clocks to the SCL of the LIS2DH.

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1 ACCEPTED SOLUTION

Accepted Solutions
Ozone
Principal

> I am considering to send 9-clocks to the SCL of the LIS2DH.

Yes, something like this.

Reconfigure both I2C pins as GPIO, and output clock pulses until the slave releases SDA.

This might be 9, or less.

If such hang-ups happen often, you might have an EMI issue.

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1 REPLY 1
Ozone
Principal

> I am considering to send 9-clocks to the SCL of the LIS2DH.

Yes, something like this.

Reconfigure both I2C pins as GPIO, and output clock pulses until the slave releases SDA.

This might be 9, or less.

If such hang-ups happen often, you might have an EMI issue.