（适用正点原子的开发板）主要是在OLED 屏幕上实时时间，如果时间不准时，可以先使用实验15 RTC实验 然后烧写进开发板，在XCOM串口调试助手发送命令如：RTC_Set(2020,06,04,23,25,30) 即可完成RTC校准！！！！
main.c代码如下：
#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "oled.h"
#include "rtc.h"
int main(void)
{ u8 t=0;
delay_init(); //延时函数初始化
RTC_Init(); //RTC初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
LED_Init(); //LED端口初始化
OLED_Init(); //初始化OLED
OLED_ShowString(0,0,"ALIENTEK",24);
OLED_Refresh_Gram(); //更新显示到OLED
while(1)
{
OLED_Refresh_Gram();
delay_ms(500);
LED0=!LED0;
if(t!=calendar.sec)
{
t=calendar.sec;
OLED_ShowNum(0,24,calendar.w_year,4,12);
OLED_ShowString(24,24, "-",12);
if(calendar.w_month<10)
{
OLED_ShowNum(30,24,0,1,12);
OLED_ShowNum(36,24,calendar.w_month,1,12);
}else OLED_ShowNum(36,24,calendar.w_month,2,12);
OLED_ShowString(42,24, "-",12);
if(calendar.w_date<10)
{
OLED_ShowNum(48,24,0,1,12);
OLED_ShowNum(54,24,calendar.w_date,1,12);
}else OLED_ShowNum(48,24,calendar.w_date,2,12);
switch(calendar.week)
{
case 0:
OLED_ShowString(64,24,"Sunday",12);
break;
case 1:
OLED_ShowString(64,24,"Monday",12);
break;
case 2:
OLED_ShowString(64,24,"Tuesday",12);
break;
case 3:
OLED_ShowString(64,24,"Wednesday",12);
break;
case 4:
OLED_ShowString(64,24,"Thursday",12);
break;
case 5:
OLED_ShowString(64,24,"Friday",12);
break;
case 6:
OLED_ShowString(64,24,"Saturday",12);
break;
}
if(calendar.hour<10)
{
OLED_ShowNum(0,36,0,1,16);
OLED_ShowNum(8,36,calendar.hour,1,16);
}else
OLED_ShowNum(0,36,calendar.hour,2,16);
OLED_ShowString(16,36,":",16);
if(calendar.min<10)
{
OLED_ShowNum(24,36,0,1,16);
OLED_ShowNum(32,36,calendar.min,1,16);
}else
OLED_ShowNum(24,36,calendar.min,2,16);
OLED_ShowString(40,36,":",16);
if(calendar.sec<10)
{
OLED_ShowNum(48,36,0,1,16);
OLED_ShowNum(56,36,calendar.sec,1,16);
}else OLED_ShowNum(48,36,calendar.sec,2,16);
LED0=!LED0;
}
delay_ms(10);
};
}
全部资料51hei下载地址：
STM32f103战舰v3OLED显示时间.7z
(200.05 KB, 下载次数: 80)
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