單片機GPS授時程序不能按秒顯示需要隔一段時間才會更新秒

ID:447439 · 發表于 2022-2-5 21:38

設計制作實時時間顯示、日期顯示和位置顯示，但是程序設計編譯好后發現時間中的秒不能按秒刷新。其余的到沒發現問題。請大家幫忙看下我的程序因為什么地方導致的不能按秒進行刷新。
Uart_Init();

      while(1)
      {

            if(Flag_GPS_OK == 1 && RX_Buffer[4] == 'G' && RX_Buffer[6] == ',' && RX_Buffer[13] == '.')                      //確定是否收到"GPGGA"這一幀數據
            {
                     for( i = 0; i < 68 ; i++)
                     {
                              Display_GPGGA_Buffer[ i] = RX_Buffer[ i];
                     }
                     Hour = (Display_GPGGA_Buffer[7]-0x30)*10+(Display_GPGGA_Buffer[8]-0x30)+8;                      //UTC時間轉換到北京時間UTC+8
                                                                                                                                                                                             //0X30為ASCII碼轉換為數字
                              if( Hour >= 24)                               //溢出
                     {
                              Hour %= 24;                               //獲取當前Hour
                              Flag_OV = 1;                      //日期進位
                     }
                     else
                     {
                              Flag_OV = 0;
                     }

                     Min_High = Display_GPGGA_Buffer[9];
                     Min_Low = Display_GPGGA_Buffer[10];

                     Sec_High = Display_GPGGA_Buffer[11];
                     Sec_Low = Display_GPGGA_Buffer[12];

                     Flag_Calc_GPGGA_OK = 1;
                     Delay_ms(5);
            }

                     LCD12864_NoWaitIdle_COM_Write(0x80);                      //設置指針
                     LCD12864_write_word("★");                               //顯示內容
                     LCD12864_Data_Write(Hour/10+0x30);
                     LCD12864_Data_Write(Hour%10+0x30);
                     LCD12864_write_word("時");

                     LCD12864_Data_Write(Min_High);
                     LCD12864_Data_Write(Min_Low);
                     LCD12864_write_word("分");

                     LCD12864_Data_Write(Sec_High);
                     LCD12864_Data_Write(Sec_Low);
                     LCD12864_write_word("秒");
                     LCD12864_write_word("★");


                     LCD12864_NoWaitIdle_COM_Write(0x98);                      //設置指針
                     LCD12864_write_word("緯度：");                               //顯示內容

                     LCD12864_Data_Write(Display_GPGGA_Buffer[28]);                      //N 或者 S
                     LCD12864_Data_Write(' ');

                     LCD12864_Data_Write(Display_GPGGA_Buffer[17]);                      //緯度
                     LCD12864_Data_Write(Display_GPGGA_Buffer[18]);                      //緯度
                     LCD12864_write_word("°");
                     LCD12864_Data_Write(Display_GPGGA_Buffer[19]);                      //緯度
                     LCD12864_Data_Write(Display_GPGGA_Buffer[20]);                      //緯度
                     LCD12864_write_word("' ");

                     LCD12864_NoWaitIdle_COM_Write(0x88);                      //設置指針
                     LCD12864_write_word("經度：");                               //顯示內容

                     LCD12864_Data_Write(Display_GPGGA_Buffer[42]);                      //E 或者 W

                     LCD12864_Data_Write(Display_GPGGA_Buffer[30]);                      //經度
                     LCD12864_Data_Write(Display_GPGGA_Buffer[31]);
                     LCD12864_Data_Write(Display_GPGGA_Buffer[32]);
                     LCD12864_write_word("°");
               LCD12864_Data_Write(Display_GPGGA_Buffer[33]);
                     LCD12864_Data_Write(Display_GPGGA_Buffer[34]);
                     LCD12864_write_word("' ");

            if(Flag_GPS_OK == 1 && RX_Buffer[4] == 'M' && RX_Buffer[52] == ',' && RX_Buffer[59] == ',')                      //確定是否收到"GPRMC"這一幀數據
            {
                     for( i = 0; i < 68 ; i++)
                     {
                              Display_GPRMC_Buffer[ i] = RX_Buffer[ i];
                     }

                     Year_High = Display_GPRMC_Buffer[57];
                     Year_Low = Display_GPRMC_Buffer[58];

                     Month_High = Display_GPRMC_Buffer[55];
                     Month_Low = Display_GPRMC_Buffer[56];

                     Day_High = Display_GPRMC_Buffer[53];
                     Day_Low = Display_GPRMC_Buffer[54];

                     if(Flag_OV == 1)                      //有進位
                     {
                              UTCDate2LocalDate();                      //UTC日期轉換為北京時間
                     }

                     Flag_Calc_GPRMC_OK = 1;
                     Delay_ms(5);
            }


                     LCD12864_NoWaitIdle_COM_Write(0x90);                      //設置指針
                     LCD12864_write_word("20");
                     LCD12864_Data_Write(Year_High);
                     LCD12864_Data_Write(Year_Low);
                     LCD12864_write_word("年");

                     LCD12864_Data_Write(Month_High);
                     LCD12864_Data_Write(Month_Low);
                     LCD12864_write_word("月");

                     LCD12864_Data_Write(Day_High);
                     LCD12864_Data_Write(Day_Low);
                     LCD12864_write_word("日");

            }
      }
}