Posted on June 24, 2018 at 15:09
Today i want to implement the tamper level detection ,but it doesn't works. Is there someone has this using experience? Please help me .
Below is my code.
void init_BspTamper()
{RTC_TamperTypeDef stamperstructure; RtcHandle.Instance = RTC; RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24; RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV; RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV; RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE; RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH; RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN; if (HAL_RTC_Init(&RtcHandle) != HAL_OK) { /* Initialization Error */ //Error_Handler(); } //Configure RTC Tamperstamperstructure.Tamper = RTC_TAMPER_1;
stamperstructure.Trigger = RTC_TAMPERTRIGGER_LOWLEVEL; stamperstructure.Filter = RTC_TAMPERFILTER_2SAMPLE;//定义采样次数 stamperstructure.SamplingFrequency = RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV256; stamperstructure.PrechargeDuration = RTC_TAMPERPRECHARGEDURATION_4RTCCLK; stamperstructure.TamperPullUp = RTC_TAMPER_PULLUP_ENABLE; stamperstructure.TimeStampOnTamperDetection = RTC_TIMESTAMPONTAMPERDETECTION_DISABLE; stamperstructure.NoErase = RTC_TAMPER_ERASE_BACKUP_ENABLE; stamperstructure.MaskFlag = RTC_TAMPERMASK_FLAG_DISABLE; //stamperstructure.Interrupt = RTC_TAMPER1_INTERRUPT; if (HAL_RTCEx_SetTamper(&RtcHandle, &stamperstructure) != HAL_OK) { /* Initialization Error */ //Error_Handler(); }} int main () { HAL_Init(); //------------------------------------------------ //configure the systerm clock SystemClock_Config();//init_BspButtonKey();
BspLed_configure(); init_BspTamper(); __HAL_RTC_TAMPER_CLEAR_FLAG(&RtcHandle,RTC_FLAG_TAMP1F);while(__HAL_RTC_TAMPER_GET_FLAG(&RtcHandle, RTC_FLAG_TAMP1F)== RESET)
{ LED1_toggle(); HAL_Delay(1000); } __HAL_RTC_TAMPER_CLEAR_FLAG(&RtcHandle,RTC_FLAG_TAMP1F); while(1) {LED1_toggle();
HAL_Delay(100);
} }The MCU is stm32l052c8, and the PC13 is used as tamper.
when i pressed the button down, now tamper occoured ,the interrupt flag doesn't changed .
