2019-07-11 11:18 AM
Is there some sort of foiling problem with PA6 on the NUCLEO-L496ZG board? I am trying to setup PA6 to be the OPAMP2 positive input. There always seems to be 3 volts stuck on this pin with nothing connected. PA0 works just fine when configured for OPAMP1 plus input. I even bought another board and same thing. Applying signals to both pins yields correct adc readings but OPAMP1 out is just always biased. I have tried everything! I'm using latest CubeMX
2019-07-11 12:17 PM
Foiling?
You have anything plugged into the headers of the board?
2019-07-11 12:35 PM
No. with the adafruit LCD removed the voltage still there. if it's not short its a pin mapping setup problem.
code attached from cube, have a look please.
a function generator is injecting identical signals onto pins PA0 and PA6.
the SPI pins from the LCD are cut below the PCB. I move connections to another SPI port.
2019-07-11 12:35 PM
2019-07-11 12:36 PM
2019-07-11 12:36 PM
2019-07-11 12:36 PM
2019-07-11 12:38 PM