1、精選優(yōu)質(zhì)文檔傾情為你奉上精選優(yōu)質(zhì)文檔傾情為你奉上專心專注專業(yè)專心專注專業(yè)精選優(yōu)質(zhì)文檔傾情為你奉上專心專注專業(yè)實(shí)習(xí)題目指導(dǎo)教師職 稱學(xué)生姓名學(xué) 號(hào)日 期實(shí)習(xí)題目指導(dǎo)教師職 稱學(xué)生姓名學(xué) 號(hào)日 期內(nèi)蒙古師范大學(xué)計(jì)算機(jī)與信息工程學(xué)院數(shù)字信號(hào)處理課程設(shè)計(jì)報(bào)告實(shí)習(xí)題目指導(dǎo)教師職 稱學(xué)生姓名學(xué) 號(hào)日 期設(shè)計(jì)題目利用鍵盤控制液晶屏的顯示指導(dǎo)教師郭改枝職稱教授姓 名學(xué) 號(hào)日 期2013年6月20日利用鍵盤控制液晶屏的顯示指導(dǎo)教師 郭改枝 講師摘要 本系統(tǒng)包括DSP 對(duì)語音信號(hào)的處理、鍵盤控制、液晶屏顯示幾部分。DSP 作為主芯片實(shí)現(xiàn)各模塊之間的通信，其主要工作有：上電自舉，讀取鍵盤值并初始化液晶屏，通過液晶屏

2、顯示鍵盤的碼值。同時(shí)，本設(shè)計(jì)在程序編寫部分很好地將匯編語言與C語言結(jié)合起來，體現(xiàn)了語言之間的聯(lián)系性，成功地利用鍵盤控制了液晶屏并顯示了鍵碼值。關(guān)鍵詞 上電自舉；中斷; 讀取鍵碼；液晶顯示1系統(tǒng)總體概況1.1總體描述鍵盤的按鍵按下，表示一次中斷，每次中斷，DSP轉(zhuǎn)向中斷服務(wù)程序并且講鍵碼值送到液晶屏并顯示出來。1.2程序框圖2.系統(tǒng)的組成部分2.1鍵盤模塊2.1.1鍵盤說明鍵盤矩陣的行線和列線分別映射為DSP的IO空間的某個(gè)地址的數(shù)據(jù)線，行線的輸出狀態(tài)通過讀IO空間的數(shù)據(jù)獲得，列線的輸入狀態(tài)通過向IO空間寫數(shù)據(jù)實(shí)現(xiàn)。實(shí)現(xiàn)鍵盤有兩種方案：一是采用現(xiàn)有的一些芯片實(shí)現(xiàn)鍵盤掃描；另一種就是用軟件實(shí)現(xiàn)鍵盤

3、掃描。這里就介紹一下軟鍵盤的實(shí)現(xiàn)方案。 圖2-1通常在一個(gè)鍵盤中使用了一個(gè)瞬時(shí)接觸開關(guān)，并且用如上圖2-1所示的簡單電路，微處理器可以容易地檢測(cè)到閉合。當(dāng)開關(guān)打開時(shí)，通過處理器的I/O口的一個(gè)上拉電阻提供邏輯1；當(dāng)開關(guān)閉合時(shí)，處理器的I/O口的輸入將被拉低得到邏輯0?？蛇z憾的是，開關(guān)并不完善，因?yàn)楫?dāng)它們被按下或者被釋放時(shí)，并不能夠產(chǎn)生一個(gè)明確的1或者0。盡管觸點(diǎn)可能看起來穩(wěn)定而且很快地閉合，但與微處理器快速的運(yùn)行速度相比，這種動(dòng)作是比較慢的。當(dāng)觸點(diǎn)閉合時(shí)，其彈起就像一個(gè)球。彈起效果將產(chǎn)生如圖8-2所示的好幾個(gè)脈沖。彈起的持續(xù)時(shí)間通常將維持在5ms30ms之間。如果需要多個(gè)鍵，則可以將每個(gè)開關(guān)連

4、接到微處理器上它自己的輸入端口。然而，當(dāng)開關(guān)的數(shù)目增加時(shí)，這種方法將很快使用完所有的輸入端口。鍵盤上陣列這些開關(guān)最有效的方法（當(dāng)需要5個(gè)以上的鍵時(shí)）就形成了一個(gè)如圖8-3所示的二維矩陣。當(dāng)行和列的數(shù)目一樣多時(shí)，也就是方型的矩陣，將產(chǎn)生一個(gè)最優(yōu)化的布列方式（I/O端被連接的時(shí)候）。一個(gè)瞬時(shí)接觸開關(guān)（按鈕）放置在每一行與線一列的交叉點(diǎn)。矩陣所需的鍵的數(shù)目顯然根據(jù)應(yīng)用程序而不同。每一行由一個(gè)輸出端口的一位驅(qū)動(dòng)，而每一列由一個(gè)電阻器上拉且供給輸入端口一位。圖2-2 按鍵抖動(dòng) 圖2-3 矩陣鍵盤 鍵盤掃描過程就是讓微處理器按有規(guī)律的時(shí)間間隔查看鍵盤矩陣，以確定是否有鍵被按下。一旦處理器判定有一個(gè)鍵按下，

5、鍵盤掃描軟件將過濾掉抖動(dòng)并且判定哪個(gè)鍵被按下。每個(gè)鍵被分配一個(gè)稱為掃描碼的唯一標(biāo)識(shí)符。應(yīng)用程序利用該掃描碼，根據(jù)按下的鍵來判定應(yīng)該采取什么行動(dòng)。換句話說，掃描碼將告訴應(yīng)用程序按下哪個(gè)鍵。 2.1.2鍵盤掃描算法 在初始化階段，所有的行（輸出端口）被強(qiáng)行設(shè)置為低電平。在沒有任何鍵按下時(shí)。所有的列（輸入端口）將讀到高電平。任何鍵的閉合將造成其中的一列變?yōu)榈碗娖健榱瞬榭词欠裼幸粋€(gè)鍵已經(jīng)被按下，微處理器僅僅需要查看任一列的值是否變成低電平。一旦微處理器檢測(cè)到有鍵被按下，就需要找出是哪一個(gè)鍵。過程很簡單，微處理器只需在其中一行上輸出一個(gè)低電平。如果它在輸入端口上發(fā)現(xiàn)一個(gè)0值，該微處理器就知道在所選擇行

6、上產(chǎn)生了鍵的閉合。相反，如果輸入端口全是高電平，則被按下的鍵就不在那一行，微處理器將選擇下一行，并重復(fù)該過程直到它發(fā)現(xiàn)了該行為止。一旦該行被識(shí)別出來，則被按下鍵的具體的列可以通過鎖定輸入端口上唯一的低電位來確定。微處理器執(zhí)行這些步驟所需要的時(shí)間與最小的狀態(tài)閉合時(shí)間相比是非常短的，因此它假設(shè)該鍵在這個(gè)時(shí)間間隔中將維持按下的狀態(tài)。比如：當(dāng)發(fā)現(xiàn)某列變?yōu)榈碗娖綍r(shí)，此時(shí)微處理器僅在某一行上輸出低電平，再查看列的狀態(tài)，如果此時(shí)在輸入端口上發(fā)現(xiàn)了一個(gè)0，則就可以斷定就是此行上的鍵按下了，反之，如果輸入端口上全為1，則就不是這一行上按下了鍵。根據(jù)第一步和第二步中得到的值，便可以得到相應(yīng)的掃描碼。比如，第一步中

7、行全為零時(shí)列輸入B1為零，當(dāng)將輸出的第二行B2置為零時(shí)，如果此時(shí)的列輸入B1仍為零，則可得到掃描碼為。 2.2液晶屏模塊2.2.1液晶屏說明另一種便僅是LCD顯示屏，沒有驅(qū)動(dòng)電路，需要與驅(qū)動(dòng)電路配合使用。特點(diǎn)是體積小，但是卻需要另外的驅(qū)動(dòng)芯片。也可以使用帶有LCD驅(qū)動(dòng)能力的高檔MCU驅(qū)動(dòng)。本實(shí)驗(yàn)我們使用的是帶有驅(qū)動(dòng)電路的LCD顯示模塊，采用DSP的總線方式來驅(qū)動(dòng)。 一般帶有驅(qū)動(dòng)模塊的LCD顯示屏使用這種驅(qū)動(dòng)方式，由于LCD已經(jīng)帶有驅(qū)動(dòng)硬件電路，因此模塊給出的是總線接口，便于與單片機(jī)的總線進(jìn)行接口。驅(qū)動(dòng)模塊具有八位數(shù)據(jù)總線，外加一些電源接口和控制信號(hào)。而且還自帶顯示緩存，只需要將要顯示的內(nèi)容送到

8、顯示緩存中就可以實(shí)現(xiàn)內(nèi)容的顯示。由于只有八條數(shù)據(jù)線，因此常常通過引腳信號(hào)來實(shí)現(xiàn)地址與數(shù)據(jù)線復(fù)用，以達(dá)到把相應(yīng)數(shù)據(jù)送到相應(yīng)顯示緩存的目的。2.2.2指令表指令代碼功能R/WD/ID7D6D5D4D3D2D1D0顯示開/關(guān)0010101111/0不論顯示隨機(jī)存儲(chǔ)數(shù)據(jù)或內(nèi)部狀態(tài)如何，將顯示打開或關(guān)閉1: 開 0: 關(guān)顯示起始線00110顯示起始線(031)指定隨機(jī)存儲(chǔ)數(shù)據(jù)在顯示器頂端顯示 (公共端0)編碼 地址設(shè)定00101110頁:(03)設(shè)置頁地址(頁地址) 列(段) 地址設(shè)定000列地址(079)設(shè)置列地址(列地址)狀態(tài)讀取10busyADC開/關(guān)RST0000讀狀態(tài)busy 1:I內(nèi)部操作

9、0:準(zhǔn)備就緒ADC 1:右向輸出 0:左向RST 1:重啟 0:正常開/關(guān) 1:顯示關(guān) 0:顯示開寫顯示數(shù)據(jù)01寫數(shù)據(jù)將數(shù)據(jù)總線中數(shù)據(jù)寫入顯存讀顯示數(shù)據(jù)11讀數(shù)據(jù)將顯存數(shù)據(jù)讀入數(shù)據(jù)總線ADC 選擇0010100000/1指定對(duì)顯存數(shù)據(jù)順時(shí)針讀取或逆時(shí)針讀取0: 順時(shí)針1: 逆時(shí)針靜態(tài)驅(qū)動(dòng) 開/關(guān)0010100100/1選擇動(dòng)態(tài)或靜態(tài)驅(qū)動(dòng)1: 靜態(tài)驅(qū)動(dòng)0: 動(dòng)態(tài)驅(qū)動(dòng)占空比選擇0010101000/1選擇占空比1:1/32H0:1/16RMW0011100000寫操作時(shí)對(duì)列地址寄存器賦增量。讀操作時(shí)不作改變。中止0011101110結(jié)束RWM模式重啟0011100010設(shè)置顯示器起始線寄存器為第1

10、行，列地址寄存器以及編碼地址寄存器為第0行 節(jié)能模式(雙重指令)00000011001100111001關(guān)閉顯示器以及打開靜態(tài)驅(qū)動(dòng)，從而設(shè)置節(jié)能模式3.程序代碼第一部分是鍵盤控制液晶屏的總體程序設(shè)計(jì)，實(shí)現(xiàn)了利用鍵盤控制液晶屏并顯示代碼。具體程序見附件一。第二部分是初始化程序，將各個(gè)寄存器，計(jì)數(shù)器，中斷等初始化。具體程序見附件二。第三部分是命令程序，設(shè)置各個(gè)部分的位置等。具體程序見附件三。4 .小結(jié) 通過近兩周的課程設(shè)計(jì)，我終于體會(huì)到實(shí)踐是檢驗(yàn)真理的唯一標(biāo)準(zhǔn)這句話的含義，只有不斷的實(shí)踐，不斷的發(fā)現(xiàn)錯(cuò)誤，不斷的反思自己，才能一步步做出完美的結(jié)果。通過這次設(shè)計(jì)，我學(xué)到了以下幾點(diǎn)：要想實(shí)現(xiàn)自己的小小目

11、標(biāo)，必須要有鍥而不舍的精神，要有百折不撓，不怕錯(cuò)，不怕輸?shù)木?。合作是相?dāng)重要的。沒有李哲的全力付出，沒有他的堅(jiān)持，我們是不可能做出來的，而且我發(fā)現(xiàn)我的合作者具有很強(qiáng)的動(dòng)手實(shí)踐能力，這一點(diǎn)是我不具備的，在此向他學(xué)習(xí)。而我發(fā)現(xiàn)的都是小問題，而他動(dòng)手能力又這么強(qiáng)，為此為有如此厲害的合作者高興。提高了我的自學(xué)能力。很多知識(shí)是自己不會(huì)的，比如仿真軟件的使用，通過查閱資料，上網(wǎng)學(xué)習(xí)，最終學(xué)到了有用的東西。鞏固了我的專業(yè)知識(shí)，包括平時(shí)學(xué)的書本上的理論知識(shí)。最后，在整個(gè)設(shè)計(jì)實(shí)現(xiàn)過程中，得到了郭改枝老師的鼓勵(lì)與精心指導(dǎo)，在此表示衷心的感謝！參考文獻(xiàn)1 劉艷萍 李志軍，DSP技術(shù)原理及應(yīng)用教程（第3版） 北京航

12、空航天出版社.2 劉修文，電子控制電路300例，機(jī)械工業(yè)出版社，2005年4月.附件一：利用鍵盤控制液晶屏的顯示#include /*/void Wr_c_l(char com);void Wr_c_r(char com);void Wr_d_l(char data);void Wr_d_r(char data);void Init_Lcd();void Cls_Lcd();void lcd_dsp(char lorr,char page_cnt,char line,char numx);char temp,clr_page_cnt,clr_byte_cnt,page_cnt,colm_cnt

13、;ioport unsigned port0800;/lcd dataioioport unsigned port1000;/lcd resetioport unsigned port0c00;/lcd diioport unsigned port1400;/lcd cs1ioport unsigned port1800;/lcd cs2ioport unsigned port2C00;/faguangchar num0 =0,0 x3E,0 x51,0 x49,0 x45,0 x3E,0 x00,0 x00;/0=00Hchar num1 =0,0 x00,0 x42,0 x7F,0 x40

14、,0 x00,0 x00,0 x00;/1=01Hchar num2 =0,0 x42,0 x61,0 x51,0 x49,0 x46,0 x00,0 x00;/2=02Hchar num3 =0,0 x21,0 x41,0 x45,0 x4B,0 x31,0 x00,0 x00;/3=03Hchar num4 =0,0 x18,0 x14,0 x12,0 x7F,0 x10,0 x00,0 x00;/4=04Hchar num5 =0,0 x27,0 x45,0 x45,0 x45,0 x39,0 x00,0 x00;/5=05Hchar num6 =0,0 x3C,0 x4A,0 x49,

15、0 x49,0 x30,0 x00,0 x00;/6=06Hchar num7 =0,0 x01,0 x01,0 x79,0 x05,0 x03,0 x00,0 x00;/7=07Hchar num8 =0,0 x36,0 x49,0 x49,0 x49,0 x36,0 x00,0 x00;/8=08Hchar num9 =0,0 x06,0 x49,0 x49,0 x29,0 x1E,0 x00,0 x00;/9=09Hchar numa =0,0 x14,0 x08,0 x3E,0 x08,0 x14,0 x00,0 x00;/*=0AHchar numb =0,0 x08,0 x08,0

16、 x3E,0 x08,0 x08,0 x00,0 x00;/+=0BHchar numc =0,0 x00,0 x50,0 x30,0 x00,0 x00,0 x00,0 x00;/,=0CHchar numd =0,0 x08,0 x08,0 x08,0 x08,0 x08,0 x00,0 x00;/-=0DHchar nume =0,0 x00,0 x60,0 x60,0 x00,0 x00,0 x00,0 x00;/.=0EHchar numf =0,0 x20,0 x10,0 x08,0 x04,0 x02,0 x00,0 x00;/=0FHchar num10=0,0 x32,0 x

17、49,0 x79,0 x41,0 x3E,0 x00,0 x00;/=10Hchar num11=0,0 x00,0 x00,0 x4F,0 x00,0 x00,0 x00,0 x00;/!=1lHchar num12=0,0 x00,0 x07,0 x00,0 x07,0 x00,0 x00,0 x00;/=12Hchar num13=0,0 x14,0 x7F,0 x14,0 x7F,0 x14,0 x00,0 x00;/#=13Hchar num14=0,0 x24,0 x2A,0 x7F,0 x2A,0 x12,0 x00,0 x00;/$=14Hchar num15=0,0 x23,

18、0 x13,0 x08,0 x64,0 x62,0 x00,0 x00;/%=15Hchar num16=0,0 x36,0 x49,0 x55,0 x22,0 x50,0 x00,0 x00;/&=16Hchar num17=0,0 x00,0 x05,0 x03,0 x00,0 x00,0 x00,0 x00;/=17Hchar num18=0,0 x00,0 x1C,0 x22,0 x41,0 x00,0 x00,0 x00;/(=18Hchar num19=0,0 x00,0 x41,0 x22,0 x1C,0 x00,0 x00,0 x00;/)=19Hchar num1a=0,0

19、x00,0 x36,0 x36,0 x00,0 x00,0 x00,0 x00;/:=1AHchar num1b=0,0 x00,0 x56,0 x36,0 x00,0 x00,0 x00,0 x00;/;=1BHchar num1c=0,0 x08,0 x14,0 x22,0 x41,0 x00,0 x00,0 x00;/=1EHchar num1f=0,0 x02,0 x01,0 x51,0 x09,0 x06,0 x00,0 x00;/?=1FHchar num20=0,0 x00,0 x00,0 x00,0 x00,0 x00,0 x00,0 x00;/ =20Hchar num21=

20、0 xF,0 xFF,0 xFF,0 xFF,0 xFF,0 xFF,0 xFF,0 xFF;/ =21Hchar num22=0,0 x7E,0 x11,0 x11,0 x11,0 x7E,0 x00,0 x00;/A=22Hchar num23=0,0 x41,0 x7F,0 x49,0 x49,0 x36,0 x00,0 x00;/B=23Hchar num24=0,0 x3E,0 x41,0 x41,0 x41,0 x22,0 x00,0 x00;/C=24Hchar num25=0,0 x41,0 x7F,0 x41,0 x41,0 x3E,0 x00,0 x00;/D=25Hcha

21、r num26=0,0 x7F,0 x49,0 x49,0 x49,0 x49,0 x00,0 x00;/E=26Hchar num27=0,0 x7F,0 x09,0 x09,0 x09,0 x01,0 x00,0 x00;/F=27Hchar num28=0,0 x3E,0 x41,0 x41,0 x49,0 x7A,0 x00,0 x00;/G=28Hchar num29=0,0 x7F,0 x08,0 x08,0 x08,0 x7F,0 x00,0 x00;/H=29Hchar num2a=0,0 x00,0 x41,0 x7F,0 x41,0 x00,0 x00,0 x00;/I=2

22、AHchar num2b=0,0 x20,0 x40,0 x41,0 x3F,0 x01,0 x00,0 x00;/J=2BHchar num2c=0,0 x7F,0 x08,0 x14,0 x22,0 x41,0 x00,0 x00;/K=2CHchar num2d=0,0 x7F,0 x40,0 x40,0 x40,0 x40,0 x00,0 x00;/L=2DHchar num2e=0,0 x7F,0 x02,0 x00,0 x02,0 x7F,0 x00,0 x00;/M=2EHchar num2f=0,0 x7F,0 x06,0 x08,0 x30,0 x7F,0 x00,0 x00

23、;/N=2FHchar num30=0,0 x3E,0 x41,0 x41,0 x41,0 x3E,0 x00,0 x00;/O=30Hchar num31=0,0 x7F,0 x09,0 x09,0 x09,0 x06,0 x00,0 x00;/P=31Hchar num32=0,0 x3E,0 x41,0 x51,0 x21,0 x5E,0 x00,0 x00;/Q=32Hchar num33=0,0 x7F,0 x09,0 x19,0 x29,0 x46,0 x00,0 x00;/R=33Hchar num34=0,0 x26,0 x49,0 x49,0 x49,0 x32,0 x00,

24、0 x00;/S=34Hchar num35=0,0 x01,0 x01,0 x7F,0 x01,0 x01,0 x00,0 x00;/T=35Hchar num36=0,0 x3F,0 x40,0 x40,0 x40,0 x3F,0 x00,0 x00;/U=36Hchar num37=0,0 x1F,0 x20,0 x40,0 x20,0 x1F,0 x00,0 x00;/V=37Hchar num38=0,0 x7F,0 x20,0 x18,0 x20,0 x7F,0 x00,0 x00;/W=38Hchar num39=0,0 x63,0 x14,0 x08,0 x14,0 x63,0

25、 x00,0 x00;/X=39Hchar num3a=0,0 x07,0 x08,0 x70,0 x08,0 x07,0 x00,0 x00;/Y=3AHchar num3b=0,0 x61,0 x51,0 x49,0 x45,0 x43,0 x00,0 x00;/Z=3BHchar num3c=0,0 x00,0 x7F,0 x41,0 x41,0 x00,0 x00,0 x00;/=3CHchar num3d=0,0 x02,0 x04,0 x08,0 x10,0 x20,0 x00,0 x00;/=3DHchar num3e=0,0 x00,0 x41,0 x41,0 x7F,0 x0

26、0,0 x00,0 x00;/=3EHchar num3f=0,0 x04,0 x02,0 x01,0 x02,0 x04,0 x00,0 x00;/=3FHchar num40=0,0 x40,0 x40,0 x40,0 x40,0 x40,0 x00,0 x00;/-=40Hchar num41=0,0 x20,0 x54,0 x54,0 x54,0 x78,0 x00,0 x00;/a=41Hchar num42=0,0 x7F,0 x48,0 x44,0 x44,0 x38,0 x00,0 x00;/b=42Hchar num43=0,0 x38,0 x44,0 x44,0 x44,0

27、 x28,0 x00,0 x00;/c=43Hchar num44=0,0 x38,0 x44,0 x44,0 x48,0 x7F,0 x00,0 x00;/d=44Hchar num45=0,0 x38,0 x54,0 x54,0 x54,0 x18,0 x00,0 x00;/e=45Hchar num46=0,0 x00,0 x08,0 x7E,0 x09,0 x02,0 x00,0 x00;/f=46Hchar num47=0,0 x0C,0 x52,0 x52,0 x4C,0 x3E,0 x00,0 x00;/g=47Hchar num48=0,0 x7F,0 x08,0 x04,0

28、x04,0 x78,0 x00,0 x00;/h=48Hchar num49=0,0 x00,0 x44,0 x7D,0 x40,0 x00,0 x00,0 x00;/i=49Hchar num4a=0,0 x20,0 x40,0 x44,0 x3D,0 x00,0 x00,0 x00;/j=4AHchar num4b=0,0 x00,0 x7F,0 x10,0 x28,0 x44,0 x00,0 x00;/k=4BHchar num4c=0,0 x00,0 x41,0 x7F,0 x40,0 x00,0 x00,0 x00;/I=4CHchar num4d=0,0 x7C,0 x04,0 x

29、78,0 x04,0 x78,0 x00,0 x00;/m=4DHchar num4e=0,0 x7C,0 x08,0 x04,0 x04,0 x78,0 x00,0 x00;/n=4EHchar num4f=0,0 x38,0 x44,0 x44,0 x44,0 x38,0 x00,0 x00;/o=4FHchar num50=0,0 x7E,0 x0C,0 x12,0 x12,0 x0C,0 x00,0 x00;/p=50Hchar num51=0,0 x0C,0 x12,0 x12,0 x0C,0 x7E,0 x00,0 x00;/q=51Hchar num52=0,0 x7C,0 x0

30、8,0 x04,0 x04,0 x08,0 x00,0 x00;/r=52Hchar num53=0,0 x58,0 x54,0 x54,0 x54,0 x64,0 x00,0 x00;/s=53Hchar num54=0,0 x04,0 x3F,0 x44,0 x40,0 x20,0 x00,0 x00;/t=54Hchar num55=0,0 x3C,0 x40,0 x40,0 x3C,0 x40,0 x00,0 x00;/u=55Hchar num56=0,0 x1C,0 x20,0 x40,0 x20,0 x1C,0 x00,0 x00;/v=56Hchar num57=0,0 x3C

31、,0 x40,0 x30,0 x40,0 x3C,0 x00,0 x00;/w=57Hchar num58=0,0 x44,0 x28,0 x10,0 x28,0 x44,0 x00,0 x00;/x=58Hchar num59=0,0 x1C,0 xA0,0 xA0,0 x90,0 x7C,0 x00,0 x00;/y=59Hchar num5a=0,0 x44,0 x64,0 x54,0 x4C,0 x44,0 x00,0 x00;/z=5AHchar num5b=0,0 x00,0 x08,0 x36,0 x41,0 x00,0 x00,0 x00;/=5BHchar num5c=0,0

32、 x00,0 x00,0 x77,0 x00,0 x00,0 x00,0 x00;/|=5CHchar num5d=0,0 x00,0 x41,0 x36,0 x08,0 x00,0 x00,0 x00;/=5DHchar num5e=0,0 x02,0 x01,0 x02,0 x04,0 x02,0 x00,0 x00;/=5EHchar love1=0,0 x40,0 xB2,0 x96,0 x9A,0 x92,0 xF6,0 x9A;char love2=0 x93,0 x91,0 x99,0 x97,0 x91,0 x90,0 x30,0;char love3=0 x40,0 x20,

33、0 xA0,0 x90,0 x4C,0 x47,0 x2A,0 x2A;char love4=0 x12,0 x1A,0 x26,0 x22,0 x40,0 xC0,0 x40,0;char an11=0 x10,0 x10,0 x10,0 xFF,0 x90,0 x20,0 x98,0 x88;char an12=0 x88,0 xE9,0 x8E,0 x88,0 x88,0 xA8,0 x98,0 x00;char an21=0 x02,0 x42,0 x81,0 x7F,0 x00,0 x00,0 x80,0 x84;char an22=0 x4B,0 x28,0 x10,0 x28,0

34、 x47,0 x80,0 x00,0 x00;/*?,0*/char key13=0 x40,0 x30,0 xEF,0 x24,0 x24,0 x80,0 xE4,0 x9C;char key14=0 x10,0 x54,0 x54,0 xFF,0 x54,0 x7C,0 x10,0 x00;char key23=0 x01,0 x01,0 x7F,0 x21,0 x51,0 x26,0 x18,0 x27;char key24=0 x44,0 x45,0 x45,0 x5F,0 x45,0 x45,0 x44,0 x00;/*?,1*/char shi15=0 x00,0 x00,0 x0

35、0,0 x7F,0 x49,0 x49,0 x49,0 x49;char shi16=0 x49,0 x49,0 x49,0 x7F,0 x00,0 x00,0 x00,0 x00;char shi25=0 x81,0 x41,0 x21,0 x1D,0 x21,0 x41,0 x81,0 xFF;char shi26=0 x89,0 x89,0 x89,0 x89,0 x89,0 x81,0 x81,0 x00;/*?,2*/char keyvalue1;/*To Decide The AIC Sample Frequency*/*/*DSP的IO空間，擴(kuò)展發(fā)光二極管、數(shù)碼管、鍵盤、液晶等外

36、圍設(shè)備*/ioport unsigned port1C00;/鍵盤行列線/*/char rdkey() ;char scan_key();char keyvalue=255;void main() c54_init(); lcd_dsp(0,1,1,an11); lcd_dsp(0,1,2,an12); lcd_dsp(0,2,1,an21); lcd_dsp(0,2,2,an22); lcd_dsp(0,1,3,key13); lcd_dsp(0,1,4,key14); lcd_dsp(0,2,3,key23); lcd_dsp(0,2,4,key24); lcd_dsp(0,1,5,shi

37、15); lcd_dsp(0,1,6,shi16); lcd_dsp(0,2,5,shi25); lcd_dsp(0,2,6,shi26);for (;) keyvalue = scan_key();if (keyvalue=255)asm( nop);/do nothingelse keyvalue1 = keyvalue;asm( nop);/do nothingasm( nop);/do nothing char rdkey()char keyin;port1C00 = 0 x0 ;keyin = port1C00 ;keyin = keyin & 0 xF ; if (keyin =

38、0 xF) return 0 ;else return 1 ;char scan_key()char keyornot;int keyin;int keyvalue; keyornot = rdkey() ; if (!keyornot) return 255; delay3(); keyornot = rdkey() ; if (keyornot )/某個(gè)鍵按下!port1C00 = 0 xe ;keyin = port1C00 & 0 xF ;if ( keyin != 0 xF)keyvalue = 0;keyin = keyin;keyvalue = keyin + keyvalue-

39、7;while (keyornot = rdkey()/等鍵松下delay3();/return keyvalue;port1C00 = 0 xd ;keyin = port1C00 & 0 xF ;if ( keyin != 0 xF)keyvalue = 1;keyvalue = keyin + keyvalue ;while (keyornot = rdkey()delay3();/return keyvalue;port1C00 = 0 xb ;keyin = port1C00 & 0 xF ;if ( keyin != 0 xF)keyvalue = 9;keyvalue = key

40、in + keyvalue ;while (keyornot = rdkey()delay3();/return keyvalue;port1C00 = 0 x7 ;keyin = port1C00 & 0 xF ;keyin = port1C00 & 0 xF ;if ( keyin != 0 xF)keyvalue = 17;keyvalue = keyin + keyvalue ;while (keyornot = rdkey()delay3();/return keyvalue;if (keyvalue=0 x7) keyvalue=0; goto proecess0; if (key

41、value=0 x6) keyvalue=1; goto proecess1; if (keyvalue=0 x4) keyvalue=2; goto proecess2; if (keyvalue=0 x0) keyvalue=3; goto proecess3; if (keyvalue=0 xf) keyvalue=4; goto proecess4; if (keyvalue=0 xe) keyvalue=5; goto proecess5; if (keyvalue=0 xc) keyvalue=6; goto proecess6; if (keyvalue=0 x8) keyval

42、ue=7; goto proecess7; if (keyvalue=0 x17) keyvalue=8; goto proecess8; if (keyvalue=0 x16) keyvalue=9; goto proecess9; if (keyvalue=0 x14) keyvalue=10; goto proecess10; if (keyvalue=0 x10) keyvalue=11; goto proecess11; if (keyvalue=0 x1f) keyvalue=12; goto proecess12; if (keyvalue=0 x1e) keyvalue=13;

43、 goto proecess13; if (keyvalue=0 x1c) keyvalue=14; goto proecess14; if (keyvalue=0 x18) keyvalue=15; goto proecess15; proecess0: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num0);/t return keyval

44、ue; proecess1: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/t return keyvalue;proecess2: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /init

45、ialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num2);/t return keyvalue; proecess3: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num3);/t return keyvalue; proecess4: temp = port1000 ;/ /RES=0，re

46、set lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num4);/t return keyvalue; proecess5: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp

47、(0,4,1,num5);/t return keyvalue; proecess6: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num6);/t return keyvalue; proecess7: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=

48、1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num7);/t return keyvalue; proecess8: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num8);/t return keyvalue; proecess9

49、: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num9);/t return keyvalue; proecess10: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd

50、Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num0);/i return keyvalue; proecess11: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num1);/i return keyvalue; proec

51、ess12: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num2);/i return keyvalue; proecess13: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd I

52、nit_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num3);/i return keyvalue; proecess14: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num4

53、);/i return keyvalue; proecess15: temp = port1000 ;/ /RES=0，reset lcd delay2(); port1000 = temp ;/ /RES=1，enable lcd Init_Lcd(); /initialize lcd Cls_Lcd();/清屏 delay2(); lcd_dsp(0,4,1,num1);/tlcd_dsp(0,4,2,num5);/i return keyvalue; return 255;void lcd_dsp(char lorr,char page_cnt,char line,char numx)/寫入一個(gè)8*8的字符char clr_byte_cnt;page_cnt = (page_cnt - 1) | 0 xb8;/設(shè)置頁號(hào)line = (line-1)*8 + 0 x40 ;/改字符的起始列if (lorr=0)/寫-l塊（左半屏）Wr_c_l(page_cnt);Wr_c_l(line);for(clr_byte_cnt=1;clr_byte_cnt=8;clr_byte_cnt+)/將numx寫入Wr_d_l(numxclr_byte_cnt-1);/在對(duì)應(yīng)列寫入一字節(jié)數(shù)據(jù)else/寫-r塊（右半屏）Wr_c_r(page_