STM32使用IWDG死机嗯，不知道怎么说，stm32的看门狗死机了，下面是
仿真时报错信息：The processor has escalated a configurable-priority excep
tion to HardFault.An instruction executed with an invalid EPSR.T or EPSR.IT field (CFSR.INVSTATE).Exception occured at PC = 0x0, LR = 0x0现象是有时会死机有时又
