Do we need to enable and set SVCall, PendSV priorities ?

[ranran]

Hello,

In stm32cubemx generated code there is the following routine.

void HAL_MspInit(void)
{
 /* USER CODE BEGIN MspInit 0 */
 
 /* USER CODE END MspInit 0 */
 
 __HAL_RCC_SYSCFG_CLK_ENABLE();
 
 HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 
 /* System interrupt init*/
 /* MemoryManagement_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(MemoryManagement_IRQn, 0, 0);
 /* BusFault_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(BusFault_IRQn, 0, 0);
 /* UsageFault_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(UsageFault_IRQn, 0, 0);
 /* SVCall_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(SVCall_IRQn, 0, 0);
 /* DebugMonitor_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(DebugMonitor_IRQn, 0, 0);
 /* PendSV_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(PendSV_IRQn, 15, 0);
 /* SysTick_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);
 
 /* USER CODE BEGIN MspInit 1 */
 
 /* USER CODE END MspInit 1 */
}

Yet, in examples used (also with freeRTOS), I don't find similar initializations of priorities for this IRQs.

Is it really needed ? Why is it missing in examples ?

Thank you,