Arduino for STM32

some faqs may be relevant
https://www.stm32duino.com/viewtopic.php?f=2&t=3
https://www.stm32duino.com/viewtopic.php?f=2&t=301

and normally to use the adc it is

pinMode(pin, INPUT_ANALOG);
uint16_t adc_val = analogRead(pin);



INPUT_ANALOG is not documented in the Arduino docs. Only options ...

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I have 8 ADC lines I want to read from PA0 - PA7. When I read from PA2 it will show the same reading as PA1 and when I read from PA3 it will show the same ADC reading as PA0.
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If you leave the analog pins open, they are floating at a very high impedance; static charges on the circuit ...

I am using a nucleo board with a ST32 103RB micro and the Arduino IDE to upload my sketch.

I have 8 ADC lines I want to read from PA0 - PA7. When I read from PA2 it will show the same reading as PA1 and when I read from PA3 it will show the same ADC reading as PA0. I am not sure why that is or I ...