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pic16f877a c语言时钟程序

pic16f877a c语言时钟程序

点击数:7778 次   录入时间:03-04 11:51:34   整理:http://www.55dianzi.com   PIC单片机
                    KeyNew = 2;
                else if(KeyNew == key_3)
                    KeyNew = 3;
                else if(KeyNew == key_4)
                    KeyNew = 4;
                else if(KeyNew == key_5)
                    KeyNew = 5;
                else if(KeyNew == key_6)
                    KeyNew = 6;
                else if(KeyNew == key_7)
                    KeyNew = 7;
                else if(KeyNew == key_8)
                    KeyNew = 8;
                else if(KeyNew == key_9)
                    KeyNew = 9;
                else if (KeyNew == key_mode)        //    MODE key pressed
                    set_mode();
                else if (KeyNew == key_cancel)        //    cancel buzzy
                {
                    led = 0;
                    CCP1CON = PWM_off;
                    BackLightEn = 1;
                    BackLightTimer = 0;
                }
                if (CurrentMode == mode_set_time)
                {
                    set_time();
                }
                else if (CurrentMode == mode_set_date)
                {
                    set_date();
                }
                else if (CurrentMode == mode_set_alarm1)
                {
                    set_alarm1();
                }
                else if (CurrentMode == mode_set_alarm2)
                {
                    set_alarm2();
                }
            }
            do        //    wait for key released
            {
                delay_ms(30);
                KeyNew = get_key();
                restart_wdt();
                BackLightTimer = 0;        //    key pressed yet
            }while ((KeyNew& 0x0f) != 0x00);
            KeyOld = KeyNew = 0x00;
        }
        if ((CurrentMode == mode_set_time) | (CurrentMode == mode_time))
        {    //    refresh time display,bacause int_timer1 dosn’t do this
            lcd_addr = lcd_read_addr() & 0x7f;    //    save cursor location
               lcd_write_inst(time_start_addr);    //    set LCD line1
            lcd_write_data(CurrentTime.hourh + ’0’);
            lcd_write_data(CurrentTime.hourl + ’0’);

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