【正文】 那些曾經(jīng)所謂的非做不可，只是青蔥年華里自。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時候是最后又打起了退堂鼓。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個人的時候，自己的想法總是特別地清晰。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來，這個世界上，對某個事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅決，還有，時間。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。t really grow up, it seems is not so important。 The end of our life, and can meet many things really do? 而窮盡我們的 一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional?？傆X得自己自己似乎應(yīng)該去做點什么，或者寫點什么。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 常州大學(xué)硬件實習(xí)報告 第 29 頁 共 31 頁 一字開頭的年齡已經(jīng)到了尾聲。s actions. CSKA said they were surprised and disappointed by Toure39。s 21 win. Michel Platini, president of European football39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport. For me it39。s antiracism taskforce, is in London for the Football Association39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。延時程序 DINGSHI1:MOV R1,27 DJNZ R1,$ DJNZ R0,DINGSHI1 RET LEDSEG:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH,39H,5EH,79H,71H Tab: DB 80H,83H,86H,89H,8DH,90H,93H,96H DB 99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEH DB 0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5H DB 0C7H,0CAH,0CCH,0CFH,0D1H, 0D4H,0D6H,0D8H DB 0DAH,0DDH,0DFH,0E1H,0E3H, 0E5H,0E7H,0E9H DB 0EAH,0ECH,0EEH,0EFH,0F1H, 0F2H,0F4H,0F5H DB 0F6H,0F7H,0F8H,0F9H,0FAH, 0FBH,0FCH,0FDH DB 0FDH,0FEH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH DB 0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FEH,0FDH DB 0FDH,0FCH,0FBH,0FAH,0F9H, 0F8H,0F7H,0F6H DB 0F5H,0F4H,0F2H,0F1H,0EFH, 0EEH,0ECH,0EAH DB 0E9H,0E7H,0E5H,0E3H,0E1H, 0DEH,0DDH,0DAH DB 0D8H,0D6H,0D4H,0D1H,0CFH, 0CCH,0CAH,0C7H DB 0C5H,0C2H,0BFH,0BCH,0BAH, 0B7H,0B4H,0B1H DB 0AEH,0ABH,0A8H,0A5H,0A2H, 9FH, 9CH, 99H DB 96H, 93H, 90H, 8DH, 89H, 86H, 83H, 80H DB 80H, 7CH, 79H, 78H, 72H, 6FH, 6CH, 69H DB 66H, 63H, 60H, 5DH, 5AH, 57H, 55H, 51H DB 4EH, 4CH, 48H, 45H, 43H, 40H, 3DH, 3AH DB 38H, 35H, 33H, 30H, 2EH, 2BH, 29H, 27H DB 25H, 22H, 20H, 1EH, 1CH, 1AH, 18H, 16H DB 15H, 13H, 11H, 10H, 0EH, 0DH, 0BH, 0AH DB 09H, 08H, 07H, 06H, 05H, 04H, 03H, 02H 常州大學(xué)硬件實習(xí)報告 第 25 頁 共 31 頁 DB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 01H, 02H DB 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H DB 0AH, 0BH, 0DH, 0EH, 10H, 11H, 13H, 15H DB 16H, 18H, 1AH, 1CH, 1EH, 20H, 22H, 25H DB 27H, 29H, 2BH, 2EH, 30H, 33H, 35H, 38H DB 3AH, 3DH, 40H, 43H, 45H, 48H, 4CH, 4EH DB 51H, 55H, 57H, 5AH, 5DH, 60H, 63H, 66H DB 69H, 6CH, 6FH, 72H, 76H, 79H, 7CH, 80H END 5 系統(tǒng)調(diào)試與分析 運行結(jié)果 三角波 常州大學(xué)硬件實習(xí)報告 第 26 頁 共 31 頁 方波 正弦波 常州大學(xué)硬件實習(xí)報告 第 27 頁 共 31 頁 軟件調(diào)試錯誤分析 錯誤 1:按 下 ABC 鍵之后不能得到相應(yīng)的波形 . 原因分析 :在選擇按鍵輸出波形的時候寄存器沒有堆棧導(dǎo)致寄存器相混淆 . 錯誤 2:按下一個鍵之后再按另一個鍵沒有反應(yīng) . 原因分析 :在軟件產(chǎn)生波形的的時候沒有掃描鍵盤而無法跳出波形產(chǎn)生的程序 . 硬件連線 CS8255 接 F228 F218 接 CS0832 F230 接 CS0809 EOC 接 IN0 接電位器 示波器一端接地，一端接數(shù)模轉(zhuǎn)換 VOUT 6 心得體會 這次單片機(jī)課程設(shè)計是我上大學(xué)以來第一次獨立完成的設(shè)計 ,雖說設(shè)計的 過程很是艱辛 ,但最終我還是堅持下來 ,并且完成了絕大多數(shù)的功能 ,我對自己的表現(xiàn)感到十分滿意 ,這畢竟是少有的鍛煉自己動手能力和思維能力的機(jī)會 ,雖然自己事情很多 ,但還是靜下心來 ,完成了任務(wù) .首先拿到這個題目 ,我感覺不是很難 ,很多內(nèi)容以前都學(xué)過 ,只要做下拼接即可 .可真正做的時候 ,錯誤百出 ,波形怎么都調(diào)不出來 ,于是我請教了老師 ,在老師的指導(dǎo)下終于將波形調(diào)出 .我覺得這個設(shè)計只要能把波形搞出 ,其他的就可以搞定 .我在設(shè)計的過程中遇到的第二個麻煩事是數(shù)碼管怎么都不亮 ,要么就是閃的太快 ,經(jīng)過我多次調(diào)試 ,這個問題才得以解決 .做課 程設(shè)計要的不是結(jié)果 ,過程更為重要 ,主要還是設(shè)計的流程思路要清晰 ,這是以后走向工作崗位的基礎(chǔ) .這次設(shè)計也給了我在硬件設(shè)計方面的信心 . 參考文獻(xiàn) [1] 趙德安 .單片機(jī)原理與應(yīng)用第二版 機(jī)械工業(yè)出版社 2021 年 1 月第 2 版第二次印刷 [2] 何立民 .單片機(jī)應(yīng)用技術(shù)選編 [M]. [3] 張毅剛 , 彭喜圓 , 譚曉昀 , 曲春波 .MCS51 單片機(jī)應(yīng)用設(shè)計 [M].哈爾濱工業(yè)大學(xué)出版社 . [4] 康華光 .電子技術(shù)基礎(chǔ) [M].高等教育出版社 . 張洪潤 ,易濤 .單片機(jī)應(yīng)用技術(shù)教程 [M].清華大學(xué)出版社。換算顯示碼 MOV A,R7 MOVC A,A+DPTR MOV KEYVAL,A MOV R6,A SJMP KEYWAIT NOKEY: SJMP KEYEXIT KEYWAIT:MOV DPTR,P8255B 。讀鍵值 MOVX A,DPTR MOV R7,08H CJNE A,0FFH,KEYCAL 。判斷是否有鍵按下，有鍵轉(zhuǎn) JKEYL0 SJMP NOKEY J_KEYL0:LCALL DINGSHI 。顯示鍵值 MOV A,KEYVAL MOVX DPTR,A RET RD_KB: MOV A,01H 。位選 MOV DPTR,P8255A MOV A,NUMS1 MOVX DPTR,A 。頻率顯示模塊 LCALL DINGSHI PUSH ACC MOV A,R4 。讀 A_D 數(shù)據(jù)