Problem in ADC2 and ADC3

[Minaihab]

Hello,

I'm having trouble with ADC2 and ADC3 on my NUCLEO-L010RB board. I've utilized all 16 ADCs on the microcontroller, and the code is functioning correctly except for these two ADCs. I am using LPUART.

In this image, I obtained a reading of 40 from all the sensors connected to ADCs, corresponding to the ASCII character "(". However, ADC2 and ADC3 consistently display the same value, even when I modify the input to any value other than 40. These two ADCs persist with this issue.

This is the configuration. 

[SofLit]

Hello,

You need to provide your source code for that.

[Minaihab]

i can't send the code but after conducting numerous tests, I've discovered that ADC inputs IN2 and IN3 behave as USART inputs, even when I select ADC mode as indicated above.

[Minaihab]

How to Change the solder bridges SB62 and SB63 to allow the ADC in2 and in3 to work as ADCs?

[SofLit · Accepted solution]

Hello,

You need to disconnect STLINK-VCP from your MCU by desoldering SB14 and SB13 and solder solder bridges SB62 and SB63:

[Minaihab]

Hello,

Thanks, I think it's my problem. But before doing that, I have a question: Can I run new code on the Nucleo board after desoldering SB14 and SB13?

[SofLit]

Didn't understand your question!

SB14 and SB13 are used to connect/disconnect STLINK-VCP from your UART.

[Minaihab]

Thanks, I found the answer to my question, and I thought that the problem would be solved. I will ask again if there are any issues after desoldering SB14 and SB13 and soldering solder bridges SB62 and SB63.