但是hal库初始化函数HAL_StatusTypeDef HAL_Init(void)
{
/* Configure Flash prefetch and Instruction cache through ART accelerator */
#if (ART_ACCLERATOR_ENABLE != 0)
__HAL_FLASH_ART_ENABLE();
#endif /* ART_ACCLERATOR_ENABLE */
/* Set Interrupt Group Priority */
HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_2);
/* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */
HAL_InitTick(TICK_INT_PRIORITY);