问答

rtc运行一晚上时间比实际实际快了十多分钟 ，程序运行逻辑，程序运行后5分钟进入休眠模式，10分钟后rtc唤醒并打印当前时间 请教出现这种情况的原因是什么 rtc 配置 void my_rtc_Init(void) { RTC_InitTypeDef RTC_InitStruct = {0}; RTC_InitStruct.DateStruct.Day = 0x20; //设置日期，DAY、MONTH、YEAR必须为BCD方式，星期为0~6，代表星期日，星期一至星期六 RTC_InitStruct.DateStruct.Month = RTC_Month_March; RTC_InitStruct.DateStruct.Week = RTC_Weekday_Wednesday; RTC_InitStruct.DateStruct.Year = 0x24; RTC_InitStruct.TimeStruct.Hour = 0x09; //设置时间，HOUR、MINIUTE、SECOND必须为BCD方式，用户须保证HOUR、AMPM、H24之间的关联正确性 RTC_InitStruct.TimeStruct.Minute = 0x09; RTC_InitStruct.TimeStruct.Second = 0x00; RTC_InitStruct.TimeStruct.AMPM = 0; RTC_InitStruct.TimeStruct.H24 = 1; RTC_InitStruct.RTC_ClockSource = RTC_RTCCLK_FROM_LSI; RTC_Init(&RTC_InitStruct); // 用户需选定需要使用的时钟源 } /* 设置时钟 */ unsigned char at_cmd_setrtc(Timestamp tm){ RTC_DateTypeDef RTC_DateStruct = {0}; RTC_TimeTypeDef RTC_TimeStruct = {0}; RTC_DateStruct.Year = HexToBcd((unsigned char) tm.year); RTC_DateStruct.Month = HexToBcd((unsigned char) tm.month); RTC_DateStruct.Day = HexToBcd((unsigned char) tm.day); RTC_DateStruct.Week = HexToBcd((unsigned char) tm.week); RTC_TimeStruct.Hour = HexToBcd((unsigned char) tm.hour); RTC_TimeStruct.Minute = HexToBcd((unsigned char) tm.minute); RTC_TimeStruct.Second = HexToBcd((unsigned char) tm.second); RTC_TimeStruct.AMPM = 0; RTC_TimeStruct.H24 = 1; RTC_SetTime(&RTC_TimeStruct); RTC_SetDate(&RTC_DateStruct); return 0; } uint8_t *WeekdayStr[7]= {"SUN","MON","TUE","WED","THU","FRI","SAT"}; void showrtctime(void) { char out[20]; RTC_TimeTypeDef RTC_TimeStruct = {0}; RTC_DateTypeDef RTC_DateStruct = {0}; RTC_GetDate(&RTC_DateStruct); RTC_GetTime(&RTC_TimeStruct); sprintf(out,"20%02d-%02d-%02d %s",BcdToHex(RTC_DateStruct.Year),BcdToHex(RTC_DateStruct.Month),BcdToHex(RTC_DateStruct.Day),WeekdayStr[RTC_DateStruct.Week]); printf("current time: %s ",out); sprintf(out,"%02d:%02d:%02d",BcdToHex(RTC_TimeStruct.Hour),BcdToHex(RTC_TimeStruct.Minute),BcdToHex(RTC_TimeStruct.Second)); printf(" %s \r\n",out); } void set_rtcAwk(uint16_t interval) { RTC_AWTTypeDef RTC_AWTStruct = {0}; RTC_AWTCmd(DISABLE); NVIC_DisableIRQ(RTC_IRQn); interval = (uint16_t)(interval*0.125) - 1; printf("set_rtcAwk %d \r\n", interval); showrtctime(); RTC_AWTStruct.AWT_ARRValue = interval; //(interval+1)/0.125 RTC_AWTStruct.AWT_ClockSource = RTC_AWTSOURCE_FROM_RTC1HZ_8; //0.125hz RTC_AWTConfig(&RTC_AWTStruct); RTC_ClearITPendingBit(RTC_IT_AWTIMER); RTC_AWTCmd(ENABLE); RTC_ITConfig(RTC_IT_AWTIMER, ENABLE); NVIC_EnableIRQ(RTC_IRQn); } void RTC_IRQHandlerCallBack(void) { if (RTC_GetITState(RTC_IT_AWTIMER )) { showrtctime(); RTC_ClearITPendingBit(RTC_IT_AWTIMER); } } /****************************************************************************** * Local function prototypes ('static') ******************************************************************************/ void System_Clk_Config(void) { uint8_t res; RCC_HSI_Enable( RCC_HSIOSC_DIV2 ); //配置系统时钟为HSI 24M RCC_LSI_Enable(); RCC_AHBPeriphClk_Enable(RCC_AHB_PERIPH_FLASH, ENABLE); //打开FLASH时钟 FLASH_SetLatency(FLASH_Latency_1); //频率小等于24M需要配置FlashWait=1 REGBITS_SET(CW_FLASH->CR1, FLASH_CR1_STANDBY_Msk); //打开FLASH低功耗使能控制 res = RCC_SysClk_Switch( RCC_SYSCLKSRC_HSI ); //切换系统时钟到HSI if( res == 0x0U ) //切换系统时钟成功 { RCC_SystemCoreClockUpdate(24000000); RCC_HCLKPRS_Config(RCC_HCLK_DIV1); //HCLK（不分频）=PCLK RCC_PCLKPRS_Config(RCC_PCLK_DIV1); } else { while(1) { } } } void RCC_CLK_Config(void) { //外设时钟使能 __RCC_GPIOA_CLK_ENABLE(); __RCC_GPIOB_CLK_ENABLE(); __RCC_GPIOC_CLK_ENABLE(); __RCC_GPIOF_CLK_ENABLE(); __RCC_UART1_CLK_ENABLE(); __RCC_UART2_CLK_ENABLE(); __RCC_UART3_CLK_ENABLE(); __RCC_UART4_CLK_ENABLE(); __RCC_UART5_CLK_ENABLE(); __RCC_UART6_CLK_ENABLE(); //__RCC_SPI1_CLK_ENABLE(); __RCC_RTC_CLK_ENABLE(); __RCC_BTIM_CLK_ENABLE(); __RCC_DMA_CLK_ENABLE(); } /****************************************************************************** * Local variable definitions ('static') * ******************************************************************************/ /****************************************************************************** * Local pre-processor symbols/macros ('#define') ******************************************************************************/ /***************************************************************************** * Function implementation - global ('extern') and local ('static') ******************************************************************************/ /** ****************************************************************************** ** \brief Main function of project ** ** \return uint32_t return value, if needed ** ** This sample HSI switch to PLL, PLL switch to HSI. ** ******************************************************************************/ int32_t main(void) { System_Clk_Config(); RCC_CLK_Config(); //InitTick(24000000); my_rtc_Init(); set_rtcAwk(600); Sleep_Mode_Config(DEEP_SLEEP_MODE); //DEEP_SLEEP_MODE printf("test...\r\n"); while (1) { /* code */ if(1==devParam_t.enter_sleep) { showrtctime(); printf("enter_low_power_consumption_mode...\r\n"); Enter_Deep_Sleep_Mode(); devParam_t.enter_sleep=0; printf("exit_low_power_consumption_mode...\r\n"); showrtctime(); } } }