【文章內(nèi)容簡介】 R1,DELAY30 RETTABLE00: DW 64580,64684,64777,6482 。音符 DW 64898,64968,65030,64260 DW 64400,64524,65058,63835,64021TABLE10: 。第一首《精忠報國》DB 66H,52H,36H,22H,12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22HDB 32H,52H,22H,42H,38H,66H,52H,36H,22H,12H,22H,22H,32H,98HDB 24H,22H,32H,54H,52H,32H,92H,12H,92H,82H,98H,66H,52H,36H,22HDB 12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22H,32H,52H,22H,42H,38HDB 66H,52H,36H,22H,12H,22H,22H,32H,98H,24H,22H,32H,54H,52H,32HDB 22H,12H,92H,82H,98H,14H,24H,34H,44H,64H,0B4H,64H,32H,52HDB 62H,0B2H,62H,52H,38H,24H,22H,32H,54H,52H,62H,52H,32H,32H,22H,38HDB 64H,0B4H,64H,32H,52H,62H,0B2H,62H,52H,38H,22H,22H,22H,32H,52H,52HDB 52H,62H,7FH,74H,04H,58H,6FHDB 00TABLE20: 。第二首《月亮代表我的心》DB 02H,82HDB 16H,32H,54H,02H,52HDB 0A6H,32H,54H,02H,52HDB 64H,74H,0B6H,64HDB 52H,5CH,32H,22HDB 16H,12H,14H,32H,22HDB 16H,12H,14H,22H,32HDB 26H,12H,94H,22H,32HDB 2CHDB 32H,52HDB 36H,22H,14H,54HDB 0ACH,92H,0A2HDB 96H,0A2H,96H,82HDB 3CH,54HDB 36H,22H,14H,54HDB 0ACH,92H,0A2HDB 16H,12H,14H,22H,32HDB 2CH,02H,82HDB 16H,32H,56H,12HDB 0A6H,32H,56H,52HDB 66H,72H,0B6H,62HDB 62H,52H,58H,32H,22HDB 16H,12H,14H,32H,22HDB 16H,12H,14H,22H,32HDB 26H,92H,0A4H,12H,22HDB 1CHDB 00TABLE30: 。 第三首《大?！稤B 82H,92H,12H,14H,12H,14H,92H,82H,12H,14H,22H,14H,92H,12H,22H,24H DB 22H,24H,12H,92H,22H,24H,32H,24H,32H,52H,62H,54H,52H,64H,52H,32HDB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,94H,1CHDB 82H,92H,12H,14H,12H,14H,92H,82H,12H,14H,22H,14H,92H,12H,22H,24HDB 22H,24H,12H,92H,22H,24H,32H,24H,32H,52H,62H,54H,52H,64H,52H,32HDB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,22H,12H,1CH,32H,52HDB 62H,64H,62H,64H,0B2H,62H,52H,54H,62H,54H,32H,22HDB 12H,14H,12H,14H,24H,3CH,32H,22H,12H,14H,12H,14H,0B2H,62H,52H,54H,62H,54H,32H,52HDB 66H,0B2H,0B4H,62H,52H,5CH,32H,52H,62H,64H,62H,64H,0B2H,62H,52H,54HDB 62H,54H,32H,22H,12H,14H,12H,14H,54H,3CH,32H,22H,12H,14H,12H,14H,22H,32HDB 52H,54H,32H,54H,32H,52H,6FH,04H,02H,92H,32H,24H,12H,1FHDB 00TABLE40: 。第四首《彩云追月》 DB 86H,92H,12H,22H,32H,52H,68H,63H,52H,34H,62H,0B2H,0B2H,62H,51H,61H,51H,31H,54H DB 62H,0B2H,0B2H,62H,52H,32H,52H,52H,51H,61H,51H,31H,34H,52H,62H,74H,32H,52H,52H,32HDB 21H,31H,21H,11H,24HDB 32H,52H,52H,32H,22H,12H,24H,32H,52H,52H,32H,62H,52H,61H,51HDB 31H,21H,21H,31H,21H,11H,1CHDB 21H,31H,22H,23H,31H,21H,18H,02H,0B2H,0BCH,0B4H,72H,61H,51H,72H,61HDB 71H,61H,51H,61H,71H,61H,6FHDB 86H,94H,12H,22H,32H,52H,64H,62H,51H,31H,52H,21H,31H,21H,33H,62H,0B2H,0B2H,62HDB 51H,61H,51H,31H,54HDB 62H,0B2H,72H,61H,51H,51H,61H,51H,31H,54H,61H,0B2H,72H,61H,51H,51H,61H,51H,31H,32HDB 21H,11H,32H,51H,61H,54HDB 02H,32H,24H,32H,52H,52H,32H,22H,31H,21H,11H,24H,32H,52H,62H,0B2H,72H,61H,51H,61HDB 51H,31H,32H,52H,52H,32H,62HDB 51H,31H,31H,21H,11H,91H,23H,31H,21H,1CH,12H,24H,32H,62H,51H,31H,34H,0B4H,72HDB 61H,51H,63H,71H,64HDB 0B2H,54H,72H,62H,71H,61H,54H,61H,51H,31H,21H,34H,73H,61H,54H,22H,32H,52H,22H,36HDB 52H,62H,61H,31H,32H,21H,11H,21H,11H,91H,81HDB 94H,52H,62H,52H,42H,32H,22H,32H,52H,0B4H,74H,64H,52H,61H,51H,41H,5CH,02H,52H,0B4H,74HDB 63H,51H,61H,51H,31H,21HDB 00TABLE50: 。第五首《看我七十二變》DB 0D4H,84H,94H,82H,92HDB 12H,22H,82H,92H,02H,92H,82H,0D2HDB 82H,92H,14H,84H,02H,0D1H,0D1HDB 0C2H,0D2H,84H,0D2H,0D2H,82H,82HDB 84H,82H,82H,94H,82H,0D2HDB 82H,82H,82H,92H,02H,82H,82H,0D2HDB 0C4H,84H,0D4H,92H,0D2HDB 82H,0D2H,82H,92H,98HDB 04H,94H,88HDB 04H,94H,88HDB 04H,94H,88HDB 04H,94H,88H,04HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,22HDB 54H,44H,34H,12H,22HDB 34H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,22HDB 54H,44H,32H,22H,12H,92HDB 00 END 第5章 仿真及調試 調試：（1）按照第2章設計的硬件電路在proteus軟件內(nèi)畫好電路圖。（2）打開單片機軟件開發(fā)系統(tǒng)keil，選擇AT89C51單片機，在其中編寫程序，運行生成一個hex文件。（3）電路檢查無誤后，雙擊AT89C51單片機，打開編輯元件對話框（如圖51所示），將已經(jīng)在keil環(huán)境下調試好的程序hex文件加載到單片機上。圖51 加載單片機程序 仿真：（1）按下15中的某一按鍵，蜂鳴器播放當前樂曲。（2）按下6鍵，則蜂鳴器響起上一首樂曲。（3）按下9鍵，則蜂鳴器響起下一首樂曲。（4）按下8鍵，則蜂鳴器停止當前音樂的播放再次按下8鍵后，音樂繼續(xù)播放。 程序調試中出現(xiàn)的問題及解決的辦法：1． 有時會出現(xiàn)程序一點錯誤也沒有，但就是不能正常運行的現(xiàn)象，最后我們發(fā)現(xiàn)是因為程序中有的指令書寫得不規(guī)范導致的，例如有的RET返回指令一定要按正確格式書寫或在兩行指令間最好不要留空行。2． 程序中的跳轉指令的運用很重要，為保險起見，都用LJMP,我們就遇到過跳轉指令用錯程序無法正常運行的現(xiàn)象。當用JNZ指令時，跳轉范圍比較少，這時要用一個標號中轉。3． 編程時要注意，在程序開始時，要寫入各定時器中斷的入口地址。4． 編程過程中要注意加注釋或分割線，否則，在程序過長時容易變得很亂，不便于查找或更改。5． 程序的結構要設計的合理，避免上下亂調用的現(xiàn)象，這樣會使程序更加清晰化。6． 編程前要加流程圖，這樣會使思路清晰，如設計思路完全可以按著MP3的工作方式列寫流程圖。7． 兩個定時器同時工作，存在中斷時序問題，剛開始時我們把定時器1設定在方式3，計250us，由于定時中斷過于頻繁，使CPU負