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            EEPW首頁(yè) > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > 單片機(jī)2408點(diǎn)陣時(shí)鐘電子制作

            單片機(jī)2408點(diǎn)陣時(shí)鐘電子制作

            作者: 時(shí)間:2016-11-25 來(lái)源:網(wǎng)絡(luò) 收藏
            這是一個(gè)鐘電子制作,用單片機(jī)直驅(qū)點(diǎn)陣,這里用的是STC89C52,驅(qū)動(dòng)能力不是很好,有條件的話(huà)用STC12C5A60S,驅(qū)動(dòng)能力已經(jīng)比較好,屏的亮度會(huì)比較高。圖中是用STC89C52單片機(jī),直驅(qū)三個(gè)8*8的共陽(yáng)點(diǎn)陣屏,亮度還基本可以,白天看都很清楚!P0口需要接上1K的上拉電阻,P1-P3口分別接三個(gè)8*8屏的陰極,用去了單片機(jī)的全部32個(gè)I/O口。為了能調(diào)時(shí)間,P2口的P2.0-P2.6接屏的1-7列,P2.7口接一個(gè)按扭作于調(diào)時(shí)間,調(diào)整方法: 長(zhǎng)按一次是進(jìn)入調(diào)時(shí)狀態(tài),短按是加1,長(zhǎng)按二次是調(diào)分,短按是加1,長(zhǎng)按3次回復(fù)正常狀態(tài)! 感興趣的愛(ài)好者可以動(dòng)手實(shí)踐一下,體驗(yàn)一下電子制作點(diǎn)陣時(shí)鐘的樂(lè)趣。

            本文引用地址:http://www.biyoush.com/article/201611/321448.htm



            //單片機(jī)點(diǎn)陣電子鐘C語(yǔ)言程序
            //MCU:STC89C52RD 晶振頻率:12MHZ
            //編寫(xiě):桃源客 日期:2010-06-7
            //電子小制作整理http://www.5imcu.net/轉(zhuǎn)載請(qǐng)保留。
            #include
            #include
            #define uchar unsigned char //宏定義
            #define uint unsigned int

            sbit KEY=P2^7; //時(shí)調(diào)整鍵
            uchar keymode; //鍵狀態(tài)
            uchar keydate; //鍵值,
            uint keycount; //鍵延時(shí)值
            unsigned char c=0; //時(shí)分調(diào)整位置變量,0不調(diào),1時(shí)調(diào)時(shí),2時(shí)調(diào)分
            bit D7,D6; //鍵值有效,長(zhǎng)按標(biāo)志,
            bit SHAN; //閃爍標(biāo)志位
            uchar second,minute,hour; //定義秒、分、時(shí)寄存器
            //以下字模與ASCII對(duì)應(yīng)是,只要將 A-0x20就可以得到A的字模了
            //高8*5寬 ASCII碼
            //采用"字模提取軟件V2.2"
            //提取方式:縱向取模,字節(jié)倒序
            uchar code ASCII86[10][5]=
            {
            {0x3E,0x41,0x49,0x41,0x3E},//0
            {0x00,0x42,0x7F,0x40,0x00},//1
            {0x72,0x49,0x49,0x49,0x46},//2
            {0x21,0x41,0x49,0x4D,0x32},//3
            {0x18,0x14,0x12,0x7F,0x10},//4
            {0x27,0x45,0x45,0x45,0x38},//5
            {0x3C,0x4A,0x49,0x49,0x31},//6
            {0x41,0x21,0x11,0x09,0x07},//7
            {0x36,0x49,0x49,0x49,0x36},//8
            {0x46,0x49,0x49,0x29,0x16},//9
            };
            uchar code seg[24][3]=
            {
            {0xfe,0xff,0xff},
            {0xfd,0xff,0xff},
            {0xfb,0xff,0xff},
            {0xf7,0xff,0xff},
            {0xef,0xff,0xff},
            {0xdf,0xff,0xff},
            {0xbf,0xff,0xff},
            {0x7f,0xff,0xff},
            {0xff,0xfe,0xff},
            {0xff,0xfd,0xff},
            {0xff,0xfb,0xff},
            {0xff,0xf7,0xff},
            {0xff,0xef,0xff},
            {0xff,0xdf,0xff},
            {0xff,0xbf,0xff},
            {0xff,0x7f,0xff},
            {0xff,0xff,0xfe},
            {0xff,0xff,0xfd},
            {0xff,0xff,0xfb},
            {0xff,0xff,0xf7},
            {0xff,0xff,0xef},
            {0xff,0xff,0xdf},
            {0xff,0xff,0xbf},
            {0xff,0xff,0x7f}
            }; //P1,P3,P2掃描列選碼
            uchar disbuf[]={0,0,0,0,0,0};//定義緩沖數(shù)組區(qū)
            void delay(uchar t); //延時(shí)函數(shù)
            void init(); //初始化函數(shù)
            void display(); //顯示函數(shù)


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