STM32L452CE CubeIDE default settings causes HardFault when setting flash latency

Hi,

I have created a project using CubeIDE 1.14.0 for the STM32L452CE. Inside the IOC editor, I changed the following things:

• SYS => Debug set to Serial Wire
• Project Manager => Advanced Settings => Set both RCC and GPIO to use LL instead of HAL

I then generated the code and fixed the broken linker script as outlined here: https://community.st.com/t5/stm32cubeide-mcus/stm32l452ce-cubeide-linker-script-causes-hardfault-inside-reset/m-p/651426#M25207

When I build and flash the code, I get a hardfault when executing the line:

LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);

The full code is below, but it is just the default code that is generated...

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file : main.c
 * @brief : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2024 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
 * @brief The application entry point.
 * @retval int
 */
int main(void)
{
 /* USER CODE BEGIN 1 */

 /* USER CODE END 1 */

 /* MCU Configuration--------------------------------------------------------*/

 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
 LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);

 /* System interrupt init*/
 NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);

 /* SysTick_IRQn interrupt configuration */
 NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),15, 0));

 /* USER CODE BEGIN Init */

 /* USER CODE END Init */

 /* Configure the system clock */
 SystemClock_Config();

 /* USER CODE BEGIN SysInit */

 /* USER CODE END SysInit */

 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 /* USER CODE BEGIN 2 */

 /* USER CODE END 2 */

 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 /* USER CODE END WHILE */

 /* USER CODE BEGIN 3 */
 }
 /* USER CODE END 3 */
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
 LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);
 while(LL_FLASH_GetLatency()!= LL_FLASH_LATENCY_0)
 {
 }
 LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
 while (LL_PWR_IsActiveFlag_VOS() != 0)
 {
 }
 LL_RCC_MSI_Enable();

 /* Wait till MSI is ready */
 while(LL_RCC_MSI_IsReady() != 1)
 {

 }
 LL_RCC_MSI_EnableRangeSelection();
 LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_6);
 LL_RCC_MSI_SetCalibTrimming(0);
 LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_MSI);

 /* Wait till System clock is ready */
 while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_MSI)
 {

 }
 LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
 LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
 LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);

 LL_Init1msTick(4000000);

 LL_SetSystemCoreClock(4000000);
}

/**
 * @brief GPIO Initialization Function
 * @PAram None
 * @retval None
 */
static void MX_GPIO_Init(void)
{
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */

 /* GPIO Ports Clock Enable */
 LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
 * @brief This function is executed in case of error occurrence.
 * @retval None
 */
void Error_Handler(void)
{
 /* USER CODE BEGIN Error_Handler_Debug */
 /* User can add his own implementation to report the HAL error return state */
 __disable_irq();
 while (1)
 {
 }
 /* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT
/**
 * @brief Reports the name of the source file and the source line number
 * where the assert_param error has occurred.
 * @PAram file: pointer to the source file name
 * @PAram line: assert_param error line source number
 * @retval None
 */
void assert_failed(uint8_t *file, uint32_t line)
{
 /* USER CODE BEGIN 6 */
 /* User can add his own implementation to report the file name and line number,
 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
 /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */