STM32F030 is resetting after enable ADC

[ALupp.1]

I'm using the stm32f030k6t6 microprocessor without the devkit, just the module, and I'm using cubeIDE (cubeMX V6.0.1) to generate a code to read a temperature from a sensor connected to PB0 (ADC_IN8). The problem is that when I start the adc (HAL_ADC_Start(&hadc)), stm32 is resetting. I already try using interrupt, DMA, everything, but with no success.

The ADC configuration is:

static void MX_ADC_Init(void)

{

 /* USER CODE BEGIN ADC_Init 0 */

 /* USER CODE END ADC_Init 0 */

 ADC_ChannelConfTypeDef sConfig = {0};

 /* USER CODE BEGIN ADC_Init 1 */

 /* USER CODE END ADC_Init 1 */

 /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)

 */

 hadc.Instance = ADC1;

 hadc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;

 hadc.Init.Resolution = ADC_RESOLUTION_12B;

 hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;

 hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;

 hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;

 hadc.Init.LowPowerAutoWait = DISABLE;

 hadc.Init.LowPowerAutoPowerOff = DISABLE;

 hadc.Init.ContinuousConvMode = DISABLE;

 hadc.Init.DiscontinuousConvMode = DISABLE;

 hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;

 hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

 hadc.Init.DMAContinuousRequests = DISABLE;

 hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;

 if (HAL_ADC_Init(&hadc) != HAL_OK)

 {

  Error_Handler();

 }

 /** Configure for the selected ADC regular channel to be converted.

 */

 sConfig.Channel = ADC_CHANNEL_8;

 sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;

 sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;

 if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)

 {

  Error_Handler();

 }

 /* USER CODE BEGIN ADC_Init 2 */

 /* USER CODE END ADC_Init 2 */

}

If I try to use the assynchronous clock mode, stm32 failed in SystemClock_Config(). I'm using the internal clock 8MHz.

In main I have:

while(1){

HAL_ADC_Start(&hadc);

 if (HAL_ADC_PollForConversion(&hadc, HAL_MAX_DELAY) == HAL_OK){

 adc_value = HAL_ADC_GetValue(&hadc);

 }

}

But did not pass the HAL_ADC_Start. Using debug, the resetting happens here:

#define __HAL_ADC_ENABLE(__HANDLE__)                      \

 ((__HANDLE__)->Instance->CR |= ADC_CR_ADEN)

Thank you!!!

[TDK]

After it resets, what does the RCC_CSR register say about the source of the reset?

[sanju]

Your code is correct. it doesn't have any error.

Adc is not resetting the microcontroller.

you have to check the source of Reset by reading this register.

[waclawek.jan · Accepted solution]

> stm32f030k6t6 microprocessor without the devkit, just the module, 

What module?

Check power supply with oscilloscope, doesn't its voltage drop when you enable ADC? Are all VDD/VDDA/GND pins connected properly, no bad solder joints, is there adequate decoupling?

JW

[ALupp.1]

If I do not clear the the flags after check one by one, PORRST and SFTRSTF are set. If I clear the flags, SFTRSTF flag is set after reset. I'm using stlink to debug.

A question: when I use the "debug" option in cubeIDE, the code is uploaded and the debug "starts", correct? This can set some of these flags and influencing in the result?

[ALupp.1]

Just the microprocessor. I made my own board to a specific solution.

But I checked the VDDA, and it was not connected! And as suggested by TDK and sanju, I checked the RCC_CSR register, and PORSTF and SFTRSTF are set. I connect VDDA to 3.3V and it works!!

Thank you very much guys!!!