【文章內(nèi)容簡(jiǎn)介】 MOV TH0,21H CPL 。獲得脈沖 POP PSW POP ACC RETI 。定時(shí)器中斷子程序 1 T1INT: MOV TH1, 3cH MOV TL1, 0b0H RETI DELAY30: MOV R7,2 W2: MOV R4,125 W3: MOV R3,248 DJNZ R3,$ DJNZ R4,W3 DJNZ R7,W2 DJNZ R1,DELAY30 RET TABLE00: DW 64580,64684,64777,6482 。音符 DW 64898,64968,65030,64260 DW 64400,64524,65058,63835,64021 TABLE10: 。第一首《精忠報(bào)國(guó)》 DB 66H,52H,36H,22H,12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22H DB 32H,52H,22H,42H,38H,66H,52H,36H,22H,12H,22H,22H,32H,98H DB 24H,22H,32H,54H,52H,32H,92H,12H,92H,82H,98H,66H,52H,36H,22H DB 12H,12H,22H,32H,98H,84H,82H,92H,14H,12H,22H,32H,52H,22H,42H,38H DB 66H,52H,36H,22H,12H,22H,22H,32H,98H,24H,22H,32H,54H,52H,32H DB 22H,12H,92H,82H,98H,14H,24H,34H,44H,64H,0B4H,64H,32H,52H DB 62H,0B2H,62H,52H,38H,24H,22H,32H,54H,52H,62H,52H,32H,32H,22H,38H DB 64H,0B4H,64H,32H,52H,62H,0B2H,62H,52H,38H,22H,22H,22H,32H,52H,52H DB 52H,62H,7FH,74H,04H,58H,6FH DB 00 TABLE20:。第二首《月亮代表我的心》 DB 02H,82H DB 16H,32H,54H,02H,52H DB 0A6H,32H,54H,02H,52H DB 64H,74H,0B6H,64H DB 52H,5CH,32H,22H DB 16H,12H,14H,32H,22H DB 16H,12H,14H,22H,32H DB 26H,12H,94H,22H,32H DB 2CH DB 32H,52H DB 36H,22H,14H,54H DB 0ACH,92H,0A2H DB 96H,0A2H,96H,82H DB 3CH,54H DB 36H,22H,14H,54H DB 0ACH,92H,0A2H DB 16H,12H,14H,22H,32H DB 2CH,02H,82H DB 16H,32H,56H,12H DB 0A6H,32H,56H,52H DB 66H,72H,0B6H,62H DB 62H,52H,58H,32H,22H DB 16H,12H,14H,32H,22H DB 16H,12H,14H,22H,32H DB 26H,92H,0A4H,12H,22H DB 1CH DB 00 TABLE30: 。 第三首《大?！? DB 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,32H DB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,94H,1CH DB 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,32H DB 22H,32H,22H,12H,94H,82H,92H,12H,14H,12H,14H,22H,12H,1CH,32H,52H DB 62H,64H,62H,64H,0B2H,62H,52H,54H,62H,54H,32H,22H DB 12H,14H,12H,14H,24H,3CH,32H,22H,12H,14H,12H,14H,0B2H,62H,52H,54H,62H,54H,32H,5 15 2H DB 66H,0B2H,0B4H,62H,52H,5CH,32H,52H,62H,64H,62H,64H,0B2H,62H,52H,54H DB 62H,54H,32H,22H,12H,14H,12H,14H,54H,3CH,32H,22H,12H,14H,12H,14H,22H,32H DB 52H,54H,32H,54H,32H,52H,6FH,04H,02H,92H,32H,24H,12H,1FH DB 00 TABLE40: 。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,32H DB 21H,31H,21H,11H,24H DB 32H,52H,52H,32H,22H,12H,24H,32H,52H,52H,32H,62H,52H,61H,51H DB 31H,21H,21H,31H,21H,11H,1CH DB 21H,31H,22H,23H,31H,21H,18H,02H,0B2H,0BCH,0B4H,72H,61H,51H,72H,61H DB 71H,61H,51H,61H,71H,61H,6FH DB 86H,94H,12H,22H,32H,52H,64H,62H,51H,31H,52H,21H,31H,21H,33H,62H,0B2H,0B2H,62H DB 51H,61H,51H,31H,54H DB 62H,0B2H,72H,61H,51H,51H,61H,51H,31H,54H,61H,0B2H,72H,61H,51H,51H,61H,51H,31H,32H DB 21H,11H,32H,51H,61H,54H DB 02H,32H,24H,32H,52H,52H,32H,22H,31H,21H,11H,24H,32H,52H,62H,0B2H,72H,61H,51H,61H DB 51H,31H,32H,52H,52H,32H,62H DB 51H,31H,31H,21H,11H,91H,23H,31H,21H,1CH,12H,24H,32H,62H,51H,31H,34H,0B4H,72H DB 61H,51H,63H,71H,64H DB 0B2H,54H,72H,62H,71H,61H,54H,61H,51H,31H,21H,34H,73H,61H,54H,22H,32H,52H,22H,36H DB 52H,62H,61H,31H,32H,21H,11H,21H,11H,91H,81H DB 94H,52H,62H,52H,42H,32H,22H,32H,52H,0B4H,74H,64H,52H,61H,51H,41H,5CH,02H,52H,0B4H,74H DB 63H,51H,61H,51H,31H,21H DB 00 TABLE50: 。第五首《看我七十二變》 DB 0D4H,84H,94H,82H,92H DB 12H,22H,82H,92H,02H,92H,82H,0D2H DB 82H,92H,14H,84H,02H,0D1H,0D1H DB 0C2H,0D2H,84H,0D2H,0D2H,82H,82H DB 84H,82H,82H,94H,82H,0D2H DB 82H,82H,82H,92H,02H,82H,82H,0D2H DB 0C4H,84H,0D4H,92H,0D2H DB 82H,0D2H,82H,92H,98H DB 04H,94H,88H DB 04H,94H,88H DB 04H,94H,88H DB 04H,94H,88H,04H DB 32H,32H,22H,12H,02H,92H,12H,92H DB 32H,32H,22H,12H,02H,92H,12H,92H DB 32H,32H,22H,12H,02H,92H,12H,22H DB 54H,44H,34H,12H,22H DB 34H,22H,12H,02H,92H,12H,92H DB 32H,32H,22H,12H,02H,92H,12H,92H DB 32H,32H,22H,12H,02H,92H,12H,22H DB 54H,44H,32H,22H,12H,92H DB 00 END 16 第 5 章 仿真及調(diào)試 調(diào)試 ： （ 1）按照第 2 章設(shè)計(jì)的硬件電路在 proteus 軟件內(nèi)畫好電路圖。 （ 2）打開(kāi)單片機(jī)軟件開(kāi)發(fā)系統(tǒng) keil，選擇 AT89C51 單片機(jī)，在其中編寫程序，運(yùn)行生成一個(gè) hex 文件。 （ 3） 電路檢查無(wú)誤后，雙擊 AT89C51 單片機(jī)，打開(kāi)編輯元件對(duì)話框 （如圖 51所示） ，將已經(jīng)在 keil 環(huán)境下調(diào)試好的程序 hex 文件加載到單片機(jī)上 。 圖 51 加載 單片機(jī) 程序 仿真： （ 1）按下 15 中的某一按鍵，蜂鳴器播放當(dāng)前樂(lè)曲。 （ 2）按下 6 鍵，則蜂鳴器響起上一首樂(lè)曲。 （ 3）按下 9 鍵，則蜂鳴器響起下一首樂(lè)曲。 （ 4）按下 8 鍵，則蜂鳴器停止當(dāng)前音樂(lè)的播放再次按下 8 鍵后，音樂(lè)繼續(xù)播放。 17 程序調(diào)試中出現(xiàn)的問(wèn)題及解決的辦法： 1． 有時(shí)會(huì)出現(xiàn)程序一點(diǎn)錯(cuò)誤也沒(méi)有，但就是不能正常運(yùn)行的現(xiàn)象，最后我們發(fā)現(xiàn) 是因?yàn)槌绦蛑杏械闹噶顣鴮懙貌灰?guī)范導(dǎo)致的，例如有的 RET 返回指令一定要按正確