What are the steps to implement ADC in Dual mode for STM32L475?

[Harish1]

There is no detailed procedure given in ref. manual to implement the dual-mode of ADC.

I have below doubts:

1. Can I initialize the ADC1 and ADC2 individually and then configure the dual-mode related registers?
2. Do I need to simultaneously all the configurations for ADC1 and ADC2 to configure the dual-mode ADC?

Implementing in two ways make sense. In one of our projects, 1st-way implementing causes issue and then implemented in a 2nd way then issue resolved. That's why I am asking this question.

Is there any example program for dual-mode ADC for STM32L475?? I tried but had no success.

[TDK]

You can only write one register at a time, so there's no way to do them simultaneously.

You need to ensure the slave is ready to go when you start the master.

Here is an example:

https://github.com/STMicroelectronics/STM32CubeL4/blob/5e1553e07706491bd11f4edd304e093b6e4b83a4/Projects/NUCLEO-L412RB-P/Examples/ADC/ADC_DualModeInterleaved/Src/main.c

[Harish1]

 I found that one mistake is done. I have enabled both the ADCs and then dual-mode selection done but it violates the process recommended by ST as below screenshot. What could be the consequence of it?

[TDK]

The consequence of doing something not allowed per the RM is unspecified behavior. Maybe it’ll work, maybe not. Maybe it’ll work only sometimes.