How to read values from external ADC of steval-stwinkt1b

SDeor.1 · ‎2022-05-22

Andrew Neil · ‎2022-05-23

Have you checked the documentation:

https://www.st.com/en/evaluation-tools/steval-stwinkt1b.html

What have you tried so far? Where are you stuck?

SDeor.1 · ‎2022-05-23

I have done the pin configuration for external ADC and selected PA10 for GPIO output and written a code for it but not able to get a good value of ADC and also don't know where to check the output ADC value.

Also I have connected the external ADC through a potentiometer so that it gives the maximum output.

Andrew Neil · ‎2022-05-23

What ADC are you using?

Post a schematic of your connections.

SDeor.1 · ‎2022-05-23

its a external ADC which is within the board.

Andrew Neil · ‎2022-05-24

Which one?

This:

SDeor.1 · ‎2022-05-24

yes that's it , so what's the procedure to get the value from that ADC? And its pin is PA5

Andrew Neil · ‎2022-05-24

I don't think that's an external ADC?

I think the ADC is internal, and the amplifier & microphone are external? And you'd need to disconnect them...

What does it tell you about these things in the User Manual?

SDeor.1 · ‎2022-05-24

If you have gone through the schematic section in the manual, there you can see that it's an EX_ADC and apart from that there are already two internal ADCs inside the MCU so clearly it's an external ADC that I need to use. So tell me the procedure of how to get value from EX_ADC in stm32cube IDE and how to observe the value?