使用keil自带的RTX系统中无法使用standby进入低功耗
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
PWR_WakeUpPinCmd(ENABLE);
PWR_EnterSTANDBYMode();
void PWR_EnterSTANDBYMode(void)
{
/* Clear Wakeup flag */
PWR->CR |= PWR_CR_CWUF;
/* Select STANDBY mode */
PWR->CR |= PWR_CR_PDDS;
/* Set SLEEPDEEP bit of Cortex System Control Register */
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;进入这里就出现HardFault_Handler错误
/* This option is used to ensure that store operations are completed */
#if defined ( __CC_ARM )
__force_stores();
#endif
/* Request Wait For Interrupt */
__WFI();
}
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