first submission
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qiyongshuang
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/********************************** (C) COPYRIGHT *******************************
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* File Name : main.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : Main program body.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/*
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*@Note
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Calendar routine:
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This routine demonstrates that the initial time is 13:58:55 on October 8, 2019,
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real-time timing, every 1S through the serial port Print the real-time clock value.
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*/
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#include "debug.h"
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/* Global define */
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/* Global Variable */
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typedef struct
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{
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vu8 hour;
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vu8 min;
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vu8 sec;
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vu16 w_year;
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vu8 w_month;
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vu8 w_date;
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vu8 week;
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} _calendar_obj;
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_calendar_obj calendar;
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u8 const table_week[12] = {0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5};
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const u8 mon_table[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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/* Exported_Functions */
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u8 RTC_Init(void);
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u8 Is_Leap_Year(u16 year);
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u8 RTC_Alarm_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec);
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u8 RTC_Get(void);
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u8 RTC_Get_Week(u16 year, u8 month, u8 day);
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u8 RTC_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec);
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/*********************************************************************
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* @fn RTC_NVIC_Config
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*
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* @brief Initializes RTC Int.
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*
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* @return none
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*/
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static void RTC_NVIC_Config(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure = {0};
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NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/*********************************************************************
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* @fn RTC_Init
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*
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* @brief Initializes RTC collection.
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*
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* @return 1 - Init Fail
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* 0 - Init Success
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*/
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u8 RTC_Init(void)
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{
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u8 temp = 0;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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PWR_BackupAccessCmd(ENABLE);
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/* Is it the first configuration */
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BKP_DeInit();
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RCC_LSEConfig(RCC_LSE_ON);
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while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET && temp < 250)
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{
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temp++;
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Delay_Ms(20);
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}
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if(temp >= 250)
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return 1;
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RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
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RCC_RTCCLKCmd(ENABLE);
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RTC_WaitForLastTask();
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RTC_WaitForSynchro();
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// RTC_ITConfig(RTC_IT_ALR, ENABLE);
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RTC_ITConfig(RTC_IT_SEC, ENABLE);
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RTC_WaitForLastTask();
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RTC_EnterConfigMode();
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RTC_SetPrescaler(32767);
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RTC_WaitForLastTask();
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RTC_Set(2019, 10, 8, 13, 58, 55); /* Setup Time */
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RTC_ExitConfigMode();
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BKP_WriteBackupRegister(BKP_DR1, 0XA1A1);
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RTC_NVIC_Config();
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RTC_Get();
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return 0;
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}
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/*********************************************************************
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* @fn Is_Leap_Year
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*
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* @brief Judging whether it is a leap year.
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*
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* @param year
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*
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* @return 1 - Yes
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* 0 - No
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*/
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u8 Is_Leap_Year(u16 year)
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{
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if(year % 4 == 0)
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{
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if(year % 100 == 0)
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{
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if(year % 400 == 0)
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return 1;
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else
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return 0;
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}
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else
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return 1;
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}
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else
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return 0;
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}
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/*********************************************************************
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* @fn RTC_Set
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*
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* @brief Set Time.
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*
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* @param Struct of _calendar_obj
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*
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* @return 1 - error
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* 0 - success
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*/
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u8 RTC_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec)
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{
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u16 t;
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u32 seccount = 0;
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if(syear < 1970 || syear > 2099)
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return 1;
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for(t = 1970; t < syear; t++){
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if(Is_Leap_Year(t))
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seccount += 31622400;
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else
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seccount += 31536000;
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}
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smon -= 1;
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for(t = 0; t < smon; t++){
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seccount += (u32)mon_table[t] * 86400;
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if(Is_Leap_Year(syear) && t == 1)
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seccount += 86400;
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}
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seccount += (u32)(sday - 1) * 86400;
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seccount += (u32)hour * 3600;
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seccount += (u32)min * 60;
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seccount += sec;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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PWR_BackupAccessCmd(ENABLE);
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RTC_SetCounter(seccount);
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RTC_WaitForLastTask();
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return 0;
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}
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/*********************************************************************
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* @fn RTC_Alarm_Set
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*
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* @brief Set Alarm Time.
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*
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* @param Struct of _calendar_obj
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*
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* @return 1 - error
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* 0 - success
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*/
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u8 RTC_Alarm_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec)
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{
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u16 t;
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u32 seccount = 0;
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if(syear < 1970 || syear > 2099)
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return 1;
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for(t = 1970; t < syear; t++) {
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if(Is_Leap_Year(t))
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seccount += 31622400;
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else
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seccount += 31536000;
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}
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smon -= 1;
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for(t = 0; t < smon; t++){
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seccount += (u32)mon_table[t] * 86400;
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if(Is_Leap_Year(syear) && t == 1)
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seccount += 86400;
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}
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seccount += (u32)(sday - 1) * 86400;
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seccount += (u32)hour * 3600;
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seccount += (u32)min * 60;
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seccount += sec;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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PWR_BackupAccessCmd(ENABLE);
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RTC_SetAlarm(seccount);
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RTC_WaitForLastTask();
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return 0;
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}
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/*********************************************************************
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* @fn RTC_Get
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*
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* @brief Get current time.
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*
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* @return 1 - error
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* 0 - success
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*/
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u8 RTC_Get(void)
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{
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static u16 daycnt = 0;
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u32 timecount = 0;
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u32 temp = 0;
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u16 temp1 = 0;
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timecount = RTC_GetCounter();
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temp = timecount / 86400;
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if(daycnt != temp)
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{
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daycnt = temp;
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temp1 = 1970;
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while(temp >= 365)
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{
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if(Is_Leap_Year(temp1))
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{
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if(temp >= 366)
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temp -= 366;
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else
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{
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temp1++;
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break;
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}
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}
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else
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temp -= 365;
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temp1++;
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}
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calendar.w_year = temp1;
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temp1 = 0;
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while(temp >= 28)
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{
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if(Is_Leap_Year(calendar.w_year) && temp1 == 1)
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{
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if(temp >= 29)
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temp -= 29;
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else
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break;
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}
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else
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{
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if(temp >= mon_table[temp1])
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temp -= mon_table[temp1];
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else
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break;
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}
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temp1++;
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}
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calendar.w_month = temp1 + 1;
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calendar.w_date = temp + 1;
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}
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temp = timecount % 86400;
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calendar.hour = temp / 3600;
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calendar.min = (temp % 3600) / 60;
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calendar.sec = (temp % 3600) % 60;
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calendar.week = RTC_Get_Week(calendar.w_year, calendar.w_month, calendar.w_date);
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return 0;
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}
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/*********************************************************************
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* @fn RTC_Get_Week
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*
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* @brief Get the current day of the week.
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*
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* @param year/month/day
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*
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* @return week
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*/
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u8 RTC_Get_Week(u16 year, u8 month, u8 day)
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{
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u16 temp2;
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u8 yearH, yearL;
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yearH = year / 100;
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yearL = year % 100;
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if(yearH > 19)
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yearL += 100;
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temp2 = yearL + yearL / 4;
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temp2 = temp2 % 7;
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temp2 = temp2 + day + table_week[month - 1];
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if(yearL % 4 == 0 && month < 3)
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temp2--;
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return (temp2 % 7);
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}
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/*********************************************************************
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* @fn main
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*
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* @brief Main program.
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*
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* @return none
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*/
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int main(void)
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{
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
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Delay_Init();
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USART_Printf_Init(115200);
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printf("SystemClk:%d\r\n", SystemCoreClock);
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printf("RTC Test\r\n");
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RTC_Init();
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while(1)
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{
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Delay_Ms(1000);
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printf("year/month/day/week/hour/min/sec:\r\n");
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printf("%d-%d-%d %d %d:%d:%d\r\n", calendar.w_year, calendar.w_month, calendar.w_date,
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calendar.week, calendar.hour, calendar.min, calendar.sec);
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}
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}
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