ADC doesn't work after code gneration

[Anassoumi]

I’ve been working on a project for a while and initially generated the code only once at the beginning to set up the hardware configuration. Recently, I updated STM32CubeIDE from version 1.14.1 to 1.15.0. After updating, I regenerated the code without making any additional configurations, yet I noticed that ADC1 and ADC2 stopped reading data. I've double-checked the configuration and the clock settings, and they appear identical to what I had previously. I also compared the HAL files, and they seem fine. All other peripherals like SPI, UART, and I2C are functioning correctly, except for the ADC. Am I missing something here?

 

 

[raptorhal2]

My first checks would be ADC registers for ADC clock and ADC Enable.

[Anassoumi]

I've confirmed that the clock for the ADC is enabled by checking the RCC register, but I noticed that the DRDY flag is never toggled. I compared the ADC configurations between the updated and the previous versions of the ADC drivers, and they're exactly the same. Everything worked perfectly when I started a new project with these settings. However, as soon as I introduced FreeRTOS into the mix, the ADC readings stopped functioning.

[NesrynELMK]

Hello @Anassoumi ,

As you mentioned that the problem happened once when enabling FreeRtos, so I suggest increasing the size of the heap and stack accordingly in the .ld file.

 

Kind regards,

Nissrine

[NesrynELMK]

Hello @Anassoumi ,

 

Could you please share your .ioc file to check the issue ?

 

Kind regards,

Nissrine

[Anassoumi]

Sure ,Project Blue.ioc is the original one i'm working with before the ADC stopped responding , Project Blue2.ioc is after the generated code , also i noticed the DRDY register of adc is never enabled for some reason , i've tried to create a new project with the updated cube ide version and worked just fine but once i enabled freertos , the adc stopped responding

[Anassoumi]

Can someone who has access to an stm32u5 do a simple test and confirm that adc works with freertos on the latest version of cube ide ?

[Anassoumi]

I've identified the root cause of my ADC issue related to FreeRTOS. It turns out that the ASV bit in the PWR->SVMCR register was never enabled during the initialization phase. This bit is essential for the proper operation of analog peripherals ... I suggest that this step be included in the HAL initialization code in future updates .

 

[NesrynELMK]

Hello @Anassoumi 

 

I confirm the issue.
The "HAL_PWREx_EnableVddA()" must be invoked in "stm32u5xx_hal_msp.c" when activating ADCx.

This issue is internally tracked with the ID: 176661, and a fix is planned for the upcoming version.

(PS: ID: 176661 is an internal tracking number and is not accessible or usable by customers)

 

Kind regards,