翌创ET6001开发板具有RTC计时功能,在使用串口0连接外部USB转TTL模块的情况下,可查看到RTC计时的效果,见图2所示。
图1 串口0接口
图2 测试效果
若将RTC与串行数码管显示模块相结合,则可实现电子时钟的计时效果,其主程序为:
- int main(void)
- {
- rtcDatetime calendar;
- uint8_t tick = 0;
- RTC_Calendar_init();
- EVB_SMG_Init();
- Init_MAX7219();
- Write_Max7219(1,1);
- Write_Max7219(2,0);
- Write_Max7219(3,10);
- Write_Max7219(4,0);
- Write_Max7219(5,0);
- Write_Max7219(6,10);
- Write_Max7219(7,0);
- Write_Max7219(8,0);
- while (1)
- {
- RTC_GetDatetime(&calendar);
- if(tick != calendar.second)
- {
- tick = calendar.second;
- Write_Max7219(1,calendar.second%10);
- Write_Max7219(2,calendar.second/10);
- Write_Max7219(4,calendar.minute%10);
- Write_Max7219(5,calendar.minute/10);
- Write_Max7219(7,calendar.hour%10);
- Write_Max7219(8,calendar.hour/10);
- }
- }
- }
经程序的编译与运行,其效果如图3所示。
图3 电子时钟效果
演示视频:
鎾斁鍣ㄥ姞杞藉け璐�: 鏈娴嬪埌Flash Player锛岃鍒� 瀹夎
VID_20241024_130839
|