2025-06-27 00:32:57 +08:00
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#include "rtc.h"
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2025-10-18 13:58:40 +08:00
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#include "base.h"
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#include "stm32f4xx.h"
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int RTC_InitNormal(RTC_InitStruct *init) {
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RTC_InitTypeDef RTC_InitStructure;
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uint16_t retry = 0X1FFF;
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// ʹ<><CAB9>PWRʱ<52><CAB1>
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
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// ʹ<>ܺĴ<F3B1B8BC><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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PWR_BackupAccessCmd(ENABLE);
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// <20>Ƿ<EFBFBD><C7B7><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>?
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if (RTC_ReadBackupRegister(RTC_BKP_DR0) != 0x5050) {
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// LSE <20><><EFBFBD><EFBFBD>
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RCC_LSEConfig(RCC_LSE_ON);
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// <20><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>RCC<43><43>־λ<D6BE><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>ȴ<EFBFBD><C8B4><EFBFBD><EFBFBD>پ<EFBFBD><D9BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) {
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retry++;
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if (init->delay_ms)
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init->delay_ms(10);
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}
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// LSE <20><><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7>.
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if (retry == 0)
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return -1;
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// <20><><EFBFBD><EFBFBD>RTCʱ<43><CAB1>(RTCCLK),ѡ<><D1A1>LSE<53><45>ΪRTCʱ<43><CAB1>
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RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
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// ʹ<><CAB9>RTCʱ<43><CAB1>
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RCC_RTCCLKCmd(ENABLE);
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// RTC<54>첽<EFBFBD><ECB2BD>Ƶϵ<C6B5><CFB5>(1~0X7F)
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RTC_InitStructure.RTC_AsynchPrediv = 0x7F;
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// RTCͬ<43><CDAC><EFBFBD><EFBFBD>Ƶϵ<C6B5><CFB5>(0~7FFF)
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RTC_InitStructure.RTC_SynchPrediv = 0xFF;
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// RTC<54><43><EFBFBD><EFBFBD>Ϊ,24Сʱ<D0A1><CAB1>ʽ
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RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
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RTC_Init(&RTC_InitStructure);
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RTC_TimeTypeDef time = {0};
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time.RTC_Hours = 12;
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time.RTC_H12 = RTC_H12_AM;
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RTC_SetTime(RTC_Format_BIN, &time);
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RTC_DateTypeDef data = {0};
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data.RTC_Year = 19;
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data.RTC_Month = 12;
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data.RTC_Date = 3;
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data.RTC_WeekDay = 1;
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RTC_SetDate(RTC_Format_BIN, &data);
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// <20><><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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RTC_WriteBackupRegister(RTC_BKP_DR0, 0x5050);
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}
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return 0;
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2025-06-27 00:32:57 +08:00
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}
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