【GMT43智能液晶模块】例程九：RTC实验——时钟显示

实验原理：

　　STM32的实时时钟（RTC）是一个独立的定时器，有一组连续计数的

计数器，通过软件来对其进行相关的配置，可以提供时钟功能，通过修改计

数器的的值，可以调整时钟。最终通过emWin在显示屏上进行显示。　　

示例截图：

源代码下载链接：

链接：http://pan.baidu.com/s/1sloF1fv 密码：gtwo

GMT43购买链接：

核心代码：

static void frame_process(void)
{
    RTC_TimeTypeDef rtc_time;
    RTC_DateTypeDef rtc_date;
    typedef struct {
        int x;
        int y;
    }POINT_T;
    float temp;
    static POINT_T ph0,ph0_bak,ph1,ph1_bak,pm0,pm0_bak, pm1,pm1_bak, ps0,ps0_bak, ps1,ps1_bak;
    int second_bak = ;
    int minute_bak = ;
    int hour_bak = ;
    int year_bak = ;
    int month_bak = ;
    int date_bak = ;
    int week_bak = ;
    char buffer[];

    GUI_CURSOR_Show();
    WM_SetCreateFlags(WM_CF_MEMDEV);
  GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbwindow, WM_HBKWIN, , );
    WM_SetCallback(WM_HBKWIN, NULL);
    add_widget();
    WM_SetCallback(WM_HBKWIN, &_cbDialog);
    while(){
        RTC_GetTime(RTC_Format_BIN,&rtc_time);//»ñÈ¡RTCʱ¼ä
        RTC_GetDate(RTC_Format_BIN,&rtc_date);//»ñÈ¡RTCÈÕÆÚ
        if(second_bak != rtc_time.RTC_Seconds){
            sprintf(buffer,"%02d",rtc_time.RTC_Seconds);
            TEXT_SetText(h_text_4, buffer);
            second_bak = rtc_time.RTC_Seconds;
        }
        if(minute_bak != rtc_time.RTC_Minutes){
            sprintf(buffer,"%02d",rtc_time.RTC_Minutes);
            TEXT_SetText(h_text_3, buffer);
            minute_bak = rtc_time.RTC_Minutes;
        }
        if(hour_bak != rtc_time.RTC_Hours){
            sprintf(buffer,"%02d",rtc_time.RTC_Hours);
            TEXT_SetText(h_text_2, buffer);
            hour_bak = rtc_time.RTC_Hours;
        }
        if(year_bak != rtc_time.RTC_Seconds){
            sprintf(buffer,"20%02d",rtc_date.RTC_Year);
            TEXT_SetText(h_text_5, buffer);
            year_bak = rtc_date.RTC_Year;
        }
        if(month_bak != rtc_date.RTC_Month){
            sprintf(buffer,"%02d",rtc_date.RTC_Month);
            TEXT_SetText(h_text_6, buffer);
            month_bak = rtc_date.RTC_Month;
        }
        if(date_bak != rtc_date.RTC_Date){
            sprintf(buffer,"%02d",rtc_date.RTC_Date);
            TEXT_SetText(h_text_7, buffer);
            date_bak = rtc_date.RTC_Date;
        }
        if(week_bak != rtc_date.RTC_WeekDay){
            switch(rtc_date.RTC_WeekDay){
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ Ò»");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ ¶þ");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ Èý");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ ËÄ");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ Îå");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ Áù");
                    break;
                case :
                    TEXT_SetText(h_text_8, "ÐÇ ÆÚ ÈÕ");
                    break;
                default:
                    break;
            }
            week_bak = rtc_date.RTC_WeekDay;
        }
        //¸üÐÂÖ¸ÕëλÖÃ
        temp = ((rtc_time.RTC_Hours + rtc_time.RTC_Minutes / .) / .)*  * PI;
        ph0.x =  * sin(temp);
        ph0.y =  * cos(temp);
        ph1.x =  * sin(temp);
        ph1.y =  * cos(temp);
        temp = (rtc_time.RTC_Minutes / .) *  * PI;
        pm0.x =  * sin(temp);
        pm0.y =  * cos(temp);
        pm1.x =  * sin(temp);
        pm1.y =  * cos(temp);
        temp = (rtc_time.RTC_Seconds / .) *  * PI;
        ps0.x =  * sin(temp);
        ps0.y =  * cos(temp);
        ps1.x =  * sin(temp);
        ps1.y =  * cos(temp);    

        //ÃëÕëÏÔʾ
        if(ps0.x != ps0_bak.x || ps0.y != ps0_bak.y){
            GUI_SetPenSize();
            GUI_SetColor(GUI_BLACK);
            GUI_DrawLine(tx(ps0_bak.x,), ty(ps0_bak.y,), tx(ps1_bak.x,), ty(ps1_bak.y,));
            GUI_SetColor(GUI_WHITE);
            GUI_SetFont(GUI_FONT_20B_ASCII);
            GUI_DispStringAt("",,);
            GUI_DispStringAt("",,);
            GUI_DispStringAt("",,);
            GUI_DispStringAt("",,);
            GUI_SetPenSize();
            GUI_SetColor(GUI_WHITE);
            GUI_DrawLine(tx(pm0.x,), ty(pm0.y,), tx(pm1.x,), ty(pm1.y,));
            GUI_SetPenSize();
            GUI_SetColor(GUI_WHITE);
            GUI_DrawLine(tx(ph0.x,), ty(ph0.y,), tx(ph1.x,), ty(ph1.y,));
            GUI_SetPenSize();
            GUI_SetColor(GUI_RED);
            GUI_DrawLine(tx(ps0.x,), ty(ps0.y,), tx(ps1.x,), ty(ps1.y,));
        }
        //·ÖÕëÏÔʾ
        if(pm0.x != pm0_bak.x || pm0.y != pm0_bak.y){
            GUI_SetPenSize();
            GUI_SetColor(GUI_BLACK);
            GUI_DrawLine(tx(pm0_bak.x,), ty(pm0_bak.y,), tx(pm1_bak.x,), ty(pm1_bak.y,));
            GUI_SetPenSize();
            GUI_SetColor(GUI_WHITE);
            GUI_DrawLine(tx(pm0.x,), ty(pm0.y,), tx(pm1.x,), ty(pm1.y,));
        }
        //ʱÕëÏÔʾ
        if(ph0.x != ph0_bak.x || ph0.y != ph0_bak.y){
            GUI_SetPenSize();
            GUI_SetColor(GUI_BLACK);
            GUI_DrawLine(tx(ph0_bak.x,), ty(ph0_bak.y,), tx(ph1_bak.x,), ty(ph1_bak.y,));
            GUI_SetPenSize();
            GUI_SetColor(GUI_WHITE);
            GUI_DrawLine(tx(ph0.x,), ty(ph0.y,), tx(ph1.x,), ty(ph1.y,));
        }
        GUI_SetColor(GUI_WHITE);
        GUI_DrawCircle(tx(,), ty(,), );
        GUI_DrawCircle(tx(,), ty(,), );
        ps0_bak.x = ps0.x;
        ps0_bak.y = ps0.y;
        ps1_bak.x = ps1.x;
        ps1_bak.y = ps1.y;
        pm0_bak.x = pm0.x;
        pm0_bak.y = pm0.y;
        pm1_bak.x = pm1.x;
        pm1_bak.y = pm1.y;
        ph0_bak.x = ph0.x;
        ph0_bak.y = ph0.y;
        ph1_bak.x = ph1.x;
        ph1_bak.y = ph1.y;
        GUI_Exec();
    }
}