2018-10-04 07:58 AM
The Reference Manual of the STM32L1 talks about "Up to 40 external I/OS can be used far data acquisition purpose in conjonction with the ADC interface".
The ADC_INxx pins number is smaller...
I saw that we can root pins with the "Routing Interface" peripheral.
Is it possible and how to use other GPIOs than ADC_INxx as analog inputs ?
2018-10-04 08:15 AM
>>Is it possible and how to use other GPIOs than ADC_INxx as analog inputs ?
NO
You can put the pins in to an analogue mode, in this context it will turn off the schmitt trigger on the digital side of the input.
2018-10-04 08:18 AM
They are not available in every 'L1 model, and not in every 'L1 package.
I looked into STM32L151xD datasheet and counted 43 ADC_IN pins (although they repeat so can't be used simultaneously).
JW