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- #include "includes.h"
- #if 1
- //如果机子彻底掉过电(如拔掉电池),开机过程,LSE就绪要等1秒
- void RTC_ConfigurationSTP1(void)
- {
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); //使能PWR和BKP时钟
- PWR_BackupAccessCmd(ENABLE); //关闭后备寄存器写保护
- //BKP_DeInit(); //将后备寄存器复位
- //RCC_LSEConfig(RCC_LSE_ON); //打开外部低速晶振
- }
- void RTC_ConfigurationSTP2(void)
- {
- //while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) {} //等待外部低速晶振就绪
- RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); //选择外部晶振为RTC的时钟源
- RCC_RTCCLKCmd(ENABLE); //使能RTC时钟
- RTC_WaitForSynchro(); //等待RTC寄存器与RTC的APB时钟同步
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- //RTC_ITConfig(RTC_IT_SEC, ENABLE); //使能RTC中断
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- RTC_SetPrescaler(32765); //设置RTC的预分频值,由于晶振选择32768,所以计数器频率=RTCCLK/RTC_PR=(32.768KHz/(32767+1)) 36767
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- }
- #else
- void RTC_Configuration(void)
- {
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); //使能PWR和BKP时钟
- PWR_BackupAccessCmd(ENABLE); //关闭后备寄存器写保护
- //BKP_DeInit(); //将后备寄存器复位
- RCC_LSEConfig(RCC_LSE_ON); //打开外部低速晶振
- while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) {} //等待外部低速晶振就绪
- RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); //选择外部晶振为RTC的时钟源
- RCC_RTCCLKCmd(ENABLE); //使能RTC时钟
- RTC_WaitForSynchro(); //等待RTC寄存器与RTC的APB时钟同步
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- RTC_ITConfig(RTC_IT_SEC, ENABLE); //使能RTC中断
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- RTC_SetPrescaler(32765); //设置RTC的预分频值,由于晶振选择32768,所以计数器频率=RTCCLK/RTC_PR=(32.768KHz/(32767+1)) 36767
- RTC_WaitForLastTask(); //等待上次对RTC寄存器配置完成
- }
- #endif
- /*********************************
- void GuiShowTime()
- {
- int time,h,m,s;
- char buf[30];
- time = RTC_GetCounter();
- h = time/3600;
- m = (time%3600)/60;
- s = (time%3600)%60;
- //printf("Time=[%2d:%02d:%02d]\r\n",h,m,s);
- //while(1){
- sprintf(buf,"%2d:%2d",h,m);
- GuiShowStr(110,0,buf,0);
- //}
- }
- *********************************/
- void SetTime(int h,int m,int s)
- {
- int time;
- time = h*3600 + m*60 + s;
- RTC_SetCounter(time);
- }
- void Delay_Timer_Init(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
- TIM_TimeBaseStructInit(&TIM_TimeBaseInitStruct);
- TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
- TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Down;
- TIM_TimeBaseInitStruct.TIM_Period = 100-1;
- TIM_TimeBaseInitStruct.TIM_Prescaler = (48-1);
- TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);
- while((TIM3->SR & TIM_FLAG_Update)!=SET);
- TIM3->SR = (uint16_t)~TIM_FLAG_Update;
- }
- void Delay_us(int us_cnt)
- {
- TIM3->CNT = us_cnt-1;
- TIM3->CR1 |= TIM_CR1_CEN;
- while((TIM3->SR & TIM_FLAG_Update)!=SET);
- TIM3->SR = (uint16_t)~TIM_FLAG_Update;
- TIM3->CR1 &= ~TIM_CR1_CEN;
- }
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