目录

• 前言
• 效果图
• 核心代码
• 参考图

前言

开发板：正点原子 STM32F103 精英版
语言：C语言
开发环境：Keil5
使用了 KEY LED LCD RTC
代码下载：码云 GitHub

代码参考：正点原子 源码RTC实验例程
功能介绍：
1、LCD显示年月日 时分秒 星期 信息。
2、KEY0 进入修改模式，分别可以修改 年月日时分秒（处于修改状态下，对应值会变红），最后退出修改模式。
3、在KEY0的修改模式下，按KEY1为数字+1，按KEY_UP为数字-1。

效果图

核心代码

完整代码下载：码云 GitHub
main.c

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "usmart.h"
#include "rtc.h"


void show_index_time( u8 index, _calendar_obj calendar_temp );

int main( void )
{ 
    
    u8 key = 0;
    
    u8 index = 0;
    
    _calendar_obj calendar_temp;
    
    delay_init();
    
    NVIC_PriorityGroupConfig( NVIC_PriorityGroup_2 );
    
    uart_init( 115200 );
    
    LED_Init();
    
    LCD_Init();
    
    KEY_Init();
    
    usmart_dev.init( SystemCoreClock / 1000000 );
    
    RTC_Init();
    
    POINT_COLOR = BLUE;
    LCD_ShowString( 60, 130, 200, 16, 16, " - - " );
    LCD_ShowString( 60, 162, 200, 16, 16, " : : " );
    calendar_temp = calendar;
    while ( 1 )
    { 
        
        if ( 0 == index )
            show_index_time( index, calendar );
        else show_index_time( index, calendar_temp );
        
        key = KEY_Scan( 0 );
        
        if ( 1 == key )
        { 
            index++;
            index = index % 7;
            
            if ( 1 == index )
            { 
                calendar_temp = calendar;
            }
            
            else if(0 == index)
            { 
                calendar = calendar_temp;
                RTC_Set( calendar_temp.w_year, calendar_temp.w_month, calendar_temp.w_date, calendar_temp.hour, calendar_temp.min, calendar_temp.sec );
            }
        }
        
        else if ( 2 == key )
        { 
            if ( 1 == index )
            { 
                calendar_temp.w_year++;
            } else if ( 2 == index )
            { 
                calendar_temp.w_month++;
                calendar_temp.w_month = calendar_temp.w_month > 12 ? 1 : calendar_temp.w_month;
            } else if ( 3 == index )
            { 
                
                if ( Is_Leap_Year( calendar_temp.w_year ) )
                { 
                    calendar_temp.w_date++;
                    calendar_temp.w_date = calendar_temp.w_date > (calendar_temp.w_month == 2 ? (mon_table[calendar_temp.w_month - 1] + 1) : mon_table[calendar_temp.w_month - 1]) ? 1 : calendar_temp.w_date;
                } else { 
                    calendar_temp.w_date++;
                    calendar_temp.w_date = calendar_temp.w_date > mon_table[calendar_temp.w_month - 1] ? 1 : calendar_temp.w_date;
                }
            } else if ( 4 == index )
            { 
                calendar_temp.hour++;
                calendar_temp.hour = calendar_temp.hour > 23 ? 0 : calendar_temp.hour;
            } else if ( 5 == index )
            { 
                calendar_temp.min++;
                calendar_temp.min = calendar_temp.min > 59 ? 0 : calendar_temp.min;
            } else if ( 6 == index )
            { 
                calendar_temp.sec++;
                calendar_temp.sec = calendar_temp.sec > 59 ? 0 : calendar_temp.sec;
            }
        }
        
        else if ( 3 == key )
        { 
            if ( 1 == index )
            { 
                calendar_temp.w_year--;
                calendar_temp.w_year = calendar_temp.w_year > 0 ? calendar_temp.w_year : 0;
            } else if ( 2 == index )
            { 
                calendar_temp.w_month--;
                calendar_temp.w_month = calendar_temp.w_month > 0 ? calendar_temp.w_month : 12;
            } else if ( 3 == index )
            { 
                if ( Is_Leap_Year( calendar_temp.w_year ) )
                { 
                    calendar_temp.w_date--;
                    calendar_temp.w_date = calendar_temp.w_date > 0 ? calendar_temp.w_date : (calendar_temp.w_month == 2 ? (mon_table[calendar_temp.w_month - 1] + 1) : mon_table[calendar_temp.w_month - 1]);
                } else { 
                    calendar_temp.w_date--;
                    calendar_temp.w_date = calendar_temp.w_date > 0 ? calendar_temp.w_date : mon_table[calendar_temp.w_month - 1];
                }
            } else if ( 4 == index )
            { 
                calendar_temp.hour = calendar_temp.hour == 0 ? 23 : calendar_temp.hour - 1;
            } else if ( 5 == index )
            { 
                calendar_temp.min = calendar_temp.min == 0 ? 59 : calendar_temp.min - 1;
            } else if ( 6 == index )
            { 
                calendar_temp.sec = calendar_temp.sec == 0 ? 59 : calendar_temp.sec - 1;
            }
        }
        delay_ms( 10 );
    }
}



void show_index_time( u8 index, _calendar_obj calendar_temp )
{ 
    POINT_COLOR = BLUE;
    if ( 1 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 60, 130, calendar_temp.w_year, 4, 16 );
    POINT_COLOR = BLUE;
    if ( 2 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 100, 130, calendar_temp.w_month, 2, 16 );
    POINT_COLOR = BLUE;
    if ( 3 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 124, 130, calendar_temp.w_date, 2, 16 );
    POINT_COLOR = BLUE;
    if ( 4 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 60, 162, calendar_temp.hour, 2, 16 );
    POINT_COLOR = BLUE;
    if ( 5 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 84, 162, calendar_temp.min, 2, 16 );
    POINT_COLOR = BLUE;
    if ( 6 == index )
        POINT_COLOR = RED;
    LCD_ShowNum( 108, 162, calendar_temp.sec, 2, 16 );
    POINT_COLOR = RED;
}

参考图