I'm working on ADC (12 bit) in NUCLEO-L4P5ZG board. In that the ADC value is correctly showing Upto ADC_IN_10 channel, afterwards it is showing random values for channel 11-15 what might be the reason?

[pvall.1]

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[Sarra.S]

Hello @pvall.1​,

What values/ ranges are you getting?

Could you provide more details about the context, which ADC, ADC clock, using DMA?

You may also need to check if the ADC channels 11-15 are enabled in the code and properly configured

[pvall.1]

Hi Sarra.S,

We are using 12 bit ADC with 3.3v Reference voltage, so the values are in range of 0 to 4095.

Settings of ADC are as follows

ADC mode:Single -ended

Prescalar :Asynchronous clock mode divided by 4.

Yes,ADC channels 11-15 are enabled properly.

[Sarra.S]

Hello again @pvall.1​ 

Make sure that the ADC clock is running at the correct frequency

Also, are you using your own design ?

[pvall.1]

It is running at correct frequency as we are getting values for remaining channels,I'm not understanding why is it not working for remaining channels.

Yes,I'm using own design.