STM32U585: ADC DMA not work on Optimization level 2 and 3

Pankajkjain · ‎2025-03-26

Hi,
I am working with STM32U585, I read 10 ADC channel which work perfectly on optimization level O0 and O1.

but when I set optimization level O2 or O3, I didn't get some channel's value. we got 0 on that channel.

Channel which which not work there values are stable 1.65V on Pin.

Some one please help to resolve this issue.

Pankaj

Andrew Neil · ‎2025-03-26

welcome to the forum.

Please show your code - preferably, a minimal example which illustrates the issue.

See: How to write your question to maximize your chances to find a solution.

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.