JetPack 5.1 How do I get coded values

The output voltage of phase AB of my encoder is 1.22v. I use interrupt function to monitor the change of pin (12) of phase A. However, no matter how I rotate the motor, I cannot read the change of the high and low level of the pin, and there is no problem with the motor and encoder

We would suggest upgrade to latest Jetpack 5.1.3, Certain issues are fixed in later release. Please try the latest version and see if the issue is still present.

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