ADC stop working after updating STM32CubeIDE to 1.18.0 version

[Pedro Oliveira]

Hi everyone,

I am using an STM32H750 microcontroller and programming it through CubeIDE.

After updating STM32CubeIDE to the latest version (1.18.0), ADC3 stopped working. For some reason that I couldn't identify, the EOS bit in the ADC_ISR register is not being set after the conversion.

I have already downloaded the previous version (1.17.0), and the firmware still works on it.

P.S.: I am using ADC through BDMA.

Below is the function that stopped working and the ADC3 configuration:

void adc_sample(void){

LL_ADC_REG_StartConversion(hadc1.Instance);

LL_ADC_REG_StartConversion(hadc3.Instance);

while(!(LL_ADC_IsActiveFlag_EOS(hadc1.Instance)));

while(!(LL_ADC_IsActiveFlag_EOS(hadc3.Instance)));

LL_ADC_ClearFlag_EOS(hadc1.Instance);

LL_ADC_ClearFlag_EOS(hadc3.Instance);

}

/** Common config

*/

hadc3.Instance = ADC3;

hadc3.Init.Resolution = ADC_RESOLUTION_12B;

hadc3.Init.ScanConvMode = ADC_SCAN_ENABLE;

hadc3.Init.EOCSelection = ADC_EOC_SINGLE_CONV;

hadc3.Init.LowPowerAutoWait = DISABLE;

hadc3.Init.ContinuousConvMode = DISABLE;

hadc3.Init.NbrOfConversion = 4;

hadc3.Init.DiscontinuousConvMode = DISABLE;

hadc3.Init.ExternalTrigConv = ADC_SOFTWARE_START;

hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

hadc3.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;

hadc3.Init.Overrun = ADC_OVR_DATA_PRESERVED;

hadc3.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;

hadc3.Init.OversamplingMode = DISABLE;

hadc3.Init.Oversampling.Ratio = 1;

if (HAL_ADC_Init(&hadc3) != HAL_OK)

{

Error_Handler();

}

[KDJEM.1]

Hello @Pedro Oliveira;

First of all, I apologize for my late reply.

I noted that clock prescaler initialization for ADC3 is not generated.

hadc3.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1

 For that could you please add this function under static void MX_ADC3_Init(void) and let me know if the issue is solved or not?

The missing ClockPrescaler issue is reported internally.

Internal ticket number: 208196 (This is an internal tracking number and is not accessible or usable by customers)

Thank you.

Kaouthar