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Visitor II
February 10, 2023
Question

How to configure RCC in STM32 Cube using NUCLEO-L496ZG and on board crystal resonator

  • February 10, 2023
  • 2 replies
  • 1818 views

I entered an inifite loop at the HAL_RCC_OscConfig (l 29) of SystemClockConfig() ​

void SystemClock_Config(void)
{
 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
 /** Configure the main internal regulator output voltage
 */
 if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
 {
 Error_Handler();
 }
 
 /** Configure LSE Drive Capability
 */
 HAL_PWR_EnableBkUpAccess();
 __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
 
 /** Initializes the RCC Oscillators according to the specified parameters
 * in the RCC_OscInitTypeDef structure.
 */
 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI;
 RCC_OscInitStruct.LSEState = RCC_LSE_ON;
 RCC_OscInitStruct.MSIState = RCC_MSI_ON;
 RCC_OscInitStruct.MSICalibrationValue = 0;
 RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;
 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
 {
 Error_Handler();
 }
 
 /** Initializes the CPU, AHB and APB buses clocks
 */
 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
 {
 Error_Handler();
 }
}

I thought this cause bay be the setting of the RCC configuration mismatch actual board (STM32L496 demo board: NUCLEO-L496ZG) ,but I can't find correct configuration setting on condition of using on board crystal resonator X2.0693W00000YAQIWQA5.png 

0693W00000YAQGpQAP.png0693W00000YAQGzQAP.png

    This topic has been closed for replies.

    2 replies

    Technical Moderator
    February 10, 2023

    Hello @DKusa.1​ 

    In the initialization of RCC Oscillators, it seems your PLL is not configured!

    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

    Super User
    February 10, 2023

    +

    set LSE drive to high .

    0693W00000YATWHQA5.png