shizacat commented on issue #14816: URL: https://github.com/apache/nuttx/issues/14816#issuecomment-2486079323
@fdcavalcanti NuttX version: 12.7.0 > Does the voltage issue happen on other pins? Yes, I tested on ADC Channel 0,1,2, the voltage behavior on the pin was the same. > It goes low only during reading or does it go back up again, after you are done sampling? It stays low while the device is open. Steps: - Restart device, the voltage on pin ch0 is set to 3 V. - call 'adc -p /dev/adc0 -n 5', in this moment voltage drop down to 1.4V, and it remains in this state. I can slight change the voltage on pin by resistor (but don't to zero). - then I open the next device (old, as I think is closed). call 'adc -p /dev/adc1 -n 5', The voltage in channel 0 rises again to 3 V, and I can change it in the range from 0 to 3 V. But on channel 1 the voltage drop down to 1.4V - the same is true for Channel 2 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
