液晶點陣顯示屏課程設計報告通信09235-宗慧

1、m大爭jiangsu university單片機原理及應用課程設計學院名稱：計算機學院專業(yè)班級：通信0902學生姓名：宗惹學生學號： 3090601035指導教師姓名： 熊書明2012年0 月點陣式液晶顯示屏的顯示程序設計宗慧通信 0902 班 3090601035一. 設計目的1. 熟練掌握c51系統(tǒng)仿真開發(fā)系統(tǒng)的應用。2. 加強單片機的綜合運用能力、提高單片機的軟件編程和調試能力，為以 后的學習和開發(fā)工作打下良好基礎。3. 掌握的液晶的工作原理以及應用設計。4. 掌握小系統(tǒng)開發(fā)設計的流程以及設計思路。二. 設計要求1）從下到上滾動顯示：“江蘇大學計算機學院”然后交替顯示：“單片機 課程設計

2、”“液晶點陣顯示屏程序設計” “作者姓名、班級、學號”2）能進行正常的模擬量采樣值顯示（溫度、壓力、電位）。3）改變字庫的內容，顯示其它漢字。4）改變頁地址或列地址，使顯示的內容改變位置。5）其它功能（如左、右移，上下卷、顯示圖片等）。三. 系統(tǒng)整體結構由于實驗指導書中做過液晶顯示和模數(shù)轉換得實驗，根據(jù)兩個實驗的功能實 現(xiàn)和流程原理進行設計將程序分成三個模塊：主函數(shù)模塊meiin. c 模數(shù)轉換模塊adc. c 液晶顯示模塊ks0108.c其中讓主函數(shù)模塊做一些初始化和函數(shù)調用工作，模數(shù)轉換模塊主要是將溫 度，壓力，點位的值轉化為數(shù)字量供液晶顯示用，液晶顯示模塊得到模數(shù)轉換模 塊傳遞過來的數(shù)字

3、量顯示到液晶面板上。程序流程圖：1系統(tǒng)主流程圖如下3顯示模塊流程圖4模數(shù)轉換模塊流程圖四. 設計和實現(xiàn)主函數(shù)模塊main, c#include ”c8051f020.h”/include <intrins.h>void delay 1 us(unsigned char us)while (us)_nop_(); _nop_(); _nop_(); _nop_(); _nop_();us;初始化系統(tǒng)時鐘，使用22.1184mhz品體作為時鐘源 void sysclk init (void)int i;oscxcn = 0x67;for (i=0; i<256; i+); whi

4、le (!(oscxcn&0x80); oscicn = 0x88;/ delay counter/ start external oscillator with/ 18.432mhz ciystal/ wait for osc. to start up/ wait for crystal osc. to settle/ select external oscillator as sysclk/ source and enable missing clock/ detector/ oscicn = 0x07; /interal 16mhz#dcfinc prtocf pomdout #

5、define prt1cf p1mdout #define prt2cf p2mdout void port init (void)xbr0=0x07;xbr 1=0x00;xbr2=0x44;emi0cf=0x27;emi0tc=0x21;p74out=0xff;pomdout=oxl5;plmdout|=0x3c;/p1.2-p1.5 推挽輸出p&=0xc3;/p1.2-p 1.5=0/ enable smbus, spio, and uarto/ enable crossbar and weak pull-upsvoid spiojnit(void)spi0cfg=0x07;/

6、data sampled on 1st sck rising edge/ 8-bit data wordsspi0cfg|=0xc0; /ckpol =1;spi0cn=0x03;spi0ckr=s ysclk/2/8000000-1;/ master mode; spi enabled; flags/ cleared/ spi clock <= 8mhz (limited by/ eeprom spec.)unsigned char count 1ms; void timeronit (void) ckcon|=ox8;tmod|=oxl;count lms= 10;tr0=0;th0

7、=(-sysclk/1000) » overflow in 1 mstl0=-sysclk/1000;tr0=l;ie|=0x2;/定時器按系統(tǒng)時鐘頻率計數(shù)/方式一16bit/ 禁止 to 計數(shù) stop timero8;/定時器賦初值65536-looous/ 開始計數(shù) start timero/ie 置 1set timero tovoid timero isr(void)interrupt 1 產(chǎn)生 1ms 的屮斷服務程序tho=(-sysclk/1000)»8;/il000,t=lmstl0 二 sysclk/1000;if (count 1ms) count 1m

8、s-;void delay 1 ms(unsigncd char t) count lms=t;while (count 1ms);void delay ls(unsigncd char t)while (t)delay lms(200);delay lms(200);delay lms(200);delay lms(200);delay lms(200);t-；char getkeyvalue(void);void init_adc(void);unsigned int getadcvalue(char no);void tcstlcd(void);void displcd(char *di

9、spbuf,char num); void initlcd(void);/初始化 lcd void showwendu(void);void showdianya(void);void showyali(void);void showniu();void showfii();void showdsheshidu();void main (void)unsigned int w;char no,i,buf5;no=l;wdtcn = oxdc;wdtcn = oxad;關看門狗sysclkjnit ();初始化時鐘timeronit(); 初始化定時器port init ();初始化 io 口s

10、pio_init ();初始化 spioinit_adc();cptlcn|=0x80;/ 使能比較器 1refocn = 0x07; 使能片內參考電壓 dac0cn |= 0x80; 使能 dac0 dac0h=0; dac0l=0;ea=1;/開中斷/test7279(0);loop: testlcd();initlcd();no=0;/w = getadcvalue(l);for (；)i=getkeyvalue();if(i>=l)&&(i<=4)no=i;switch(no)case 1:showwendu(); break;case 2:showdian

11、ya();break;case 3:showyali();brcak;case 4:goto loop;break;default:break;w = getadcvalue(no);delay lms(30);svvitch(no)case 1:buf0=(w% 10000)/1000; bull l=(w% 1000)/100; buf2=' *;buf3=(w% 100)/10;buf4=(w%10);displcd(buf,l); showsheshidu();break;case 2:/showdianya();buf0=(w% 10000)/1000; bufl=* :bu

12、fi2=(w% 1000)/100; buf3=(w%100)/10;buf4=(w%10);displcd(buf,2);showfu();break;case 3:/showyali();buf0=(w% 10000)/1000; bull l=(w% 1000)/100; buf2=(w%100)/10;bufi3=r: buf4=(w%10);displcd(buf,3)； showniu();break;default:break;液晶顯示模塊ks0108.c#include c8051f020. hinclude <intrins. h> /*液晶點陣顯示試驗-128*

13、64,控制器ks0108試驗準備:將撥碼開關s1和s2置于on位置.*/#define lcd data p2define lcd_rs p30#define lcd rw p31#define lcd_e p32#define lcd_cs1 p34#define lcd cs2 p33#define lcd_rst p35void delayims(unsigned char);char code screen = ;/江蘇大學計算機學院/*寬度 x 高度二 128x64 */char code screenl = ;/2010 單片機課程設計/*- 寬度 x 高度二 128x64 -*/

14、char code screen2 = ; /液晶點陣顯示屏程序設計char code screen3 = ; /作者姓名：宗慧；班級：通信 0902；學號：3090601035；#define selectcs 0void lcd waitreadyl (void)判斷 lcd 控制芯片 ks0108 是否忙/前64列讀/讀寫使能有效lcd data=0xff; _nop_();lcd_cs1=selectcs;lcd rw=1;lcd_rs=0;lcd e=l;while (lcd_data&0x80);lcd_cs1=!selectcs;void lcd_waitroady2 (

15、void)/判斷 lcd 控制芯片 ks0108 是否忙后64列/讀/讀寫使能有效lcd_data二oxff; _nop_();lcd cs2二selectcs;lcd_rw=1;lcd rs=0;lcd e=1;wh訂e (lcd_data&0x80);lcd cs2=!selectcs;void lcd writ ecommand 1 (char ch) /向 lcd 控制芯片 ks0108 發(fā)送控制命令lcd waitreadyl();lcd_cs1二selectcs;lcd rw=o;lcd_rs二0;lcd_data=ch;lcd e二1;lcd_e二0;lcd cs1=!s

16、electcs;void lcd_writecommand2(char ch)lcd_waitready2();lcd cs2=selectcs;lcd_rw二0;lcd_rs二0;lcd data二ch;lcd_e二1;lcd e=0;lcd cs2=!selectcs;void lcd writedata1(char ch)lcd waitreadyl();lcd_cs1二selectcs;lcd_rw=0;lcd_rs二1;lcd_data二ch;lcd e=l;lcd_e二0;lcd_cs1=!selectcs;void lcd_writcdata2(char ch)lcd_waitr

17、eady2();/向lcd控制芯片ks0108發(fā)送控制命令/向lcd控制芯片ks0108發(fā)送數(shù)據(jù)命令向lcd控制芯片ks0108發(fā)送數(shù)據(jù)命令lcd_cs2二selectcs;lcd rw=0;lcd_rs=1;lcd data=ch;lcd e=l;lcd_e二0;lcd cs2=!selectcs:void lcd writehz(char x, char y, char *dat)/顯示 16*16 點陣漢字char i;for (i二0;i32;i+)if (x+i%16)<64)/x代表列，顯示在左半屏lcd writecommandl(0xb8+y+i/16);lcdjvri

18、tccommandl(0x40+x+i%16);lcd writedatal(dati);elselcd_writecommand2 (0xb8+y+ i/16);/因為一個字占 16 行，0xb8 表示 0 頁lcd writecommand2 (0x40+x-64+i%16) ;/因為一個字占 16 列，0x40 表示 0 列l(wèi)cd_writedata2(datij);void lcd writesz(char x, char y, char *dat)/顯示 16*8 點陣數(shù)字char i;for (i=0;i<16;i+)if (x+i%8)<64)/x代表列，一個數(shù)字占8

19、列，顯示在左半屏lcd wri tecommandl (0xb8+3+i/8) ; /設置頁地址 y 表示頁lcdjvritecommandl (0x40+x+i%8) ;/設置列地址x表示列，一個數(shù)字占8列l(wèi)cd_writedatal(dati);elselcd writecommand2(0xb8+y+i/8):lcd_writccommand2 (0x40+x-64+i%8); 減去 64 列，表示寫在右半屏lcd writedata2(dati);void initlcd(void)/初始化 lcdchar i, j;lcd_rst=0; 正常狀態(tài)delay1ms (1);lcd_rs

20、t=1; /正處于復位初始化狀態(tài)lcd writecommandl (oxco) ;/設置起始行l(wèi)cd writecommand2(0xc0) ;/設置起始行l(wèi)cd writecommandl (0x3f) ;/開顯示lcd_wri tecommand2 (0x3f) ;/開顯示for (j=0;j<8;j+)/清屏(lcd wri tecommandl (0xb8+j) ;/清左半屏lcd writecommandl(0x40);for (i=0;i<64;i+)lcd writedatal(oxoo);lcd_writecommand2 (0xb8+j) ;/清右半屏lcd_w

21、ritecommand2(0x40);for (i=0;i<64;i+)lcd_writedata2(0x00);void dispbmp(char *buf) /顯示一幅位圖 int i, j;for (j=0; j<8; j+)/顯示位圖lcd_writecommand1(0xb8+j);lcd writecommandl(0x40);for (i=0;i<64;i+)lcd writedatal(buf(j*2)*64+i);lcd wi'i tecommand2 (0xb8+j);lcd wri tecommand2 (0x40);for (i二0; i<

22、;6zl; i+)lcd_writcdata2(buf(j*2+l)*64+i);void dispbmpleft(char *buf)/顯示一幅位圖int i, j, k;for (k二0;k128;k+)for (j二0; j8; j+)/顯示位圖lcd_wri tecommandl(0xb8+j);lcd writecommandl(0x40);for (i二0;i64;i+)左移if(i+k)<128)lcd_writedatal(buf(j*2)*64+i+k);elsei.cdjvritedatal (buf (j*2)*64+i+k-128);lcd_wri tecomma

23、nd2(0xb8+j);lcd writecommand2 (0x40);for (i二0;i<64;i+)if(i+k)<64)lcdjvritcdata2(buf(j*2+l)*64+ i +k);elselcd_writedata2(buf(j*2+1)*64+i +k-128);void dispbmpri ght (char *buf)/顯示一幅位圖int i, j, k;for (k二0;k128;k+)for (j=0; j<8; j+)/顯示位圖lcd writeconunandl (0xb8+j);lcd_wr i tecommandl(0x40);for

24、(i=0; i<64; i+)/右移if(i-k)>0)lcd.writedatal(buf(j*2)*64+i-k);elselcd writedatal(buf(j*2)*64+ik+128);lcdjvritecommand2(0xb8+j);lcd writeconunand2(0x40);for (i二0;i<64;i+)if(i-k)>-64)lcdjvritedata2(buf(j*2+l)*64+ik);elselcdjvritcdata2(buf(j*2+l)*64+ i-k+128);char code zero= ;/0char code one=

25、 ; /i char code two= ; /2 char code three = ; /3char code four= ; /4char code five= ; /5char code six= ; /6char code seven= ; /7char code eight= ; /8char code nine = ; /9char code maohao = ; /冒號char code dot= ; /點char code wen= ; /溫char code du= ; /度char code dian= ;/電char code ya= ;/壓char code 1 訂=

26、 ; 力char code c = ;/°cchar code n= ; /nchar code hao= ; /mchar code v= ; /vchar code screen4 = ; /請選擇：1.溫度；2.電；3.壓力;char code jiang = ;/江char code su = ;/蘇char code da = ;/大char code xue = ) ;/學char code huan = ;/歡char code ying二 ;/迎char code nin=;/您char code gantanhao=;/!void displcd(char *dis

27、pbuf, char num)int i;for(i=0;i<5;i+)if(num=l)&&(i=2)lcdjvritesz(56+8*i, 3, dot); delaylms(100);i+；if(num二二2)&&(i=l)lcd writesz(56+8*i,3, dot);delaylms(100);i+；if(num二=3)&&(i=3)lcd writesz(56+8*i, 3, dot); delayims(100);i+；switch(di spbufi)case 0:lcd_writesz(56+8*i, 3, zero

28、); delaylms(100);break: case 1:lcd writesz(56+8*i,3, one); delaylms(100);break; case 2:lcd writesz(56+8*i, 3, two); delaylms(100);break; case 3:lcd writesz(56+8*i,3,three); delaylms (100);break; case 4:lcd_wr i tesz(56+8* i,3, four); delaylms(100);break; case 1 5 :lcd_writesz(56+8*i,3,five); delaylm

29、s (100);break; case 6:lcd writesz(56+8*i,3, six); delaylms (100);break; case 7:lcd writesz(56+8*i, 3, seven); delaylms(100);break; case 8:lcd_writesz(56+8*i, 3, eight); delaylms(100);break; case 9:lcd_writesz(56+8*1, 3, nine); delaylms(100):break;/*case :,:lcd wri tesz(48+8*i, 3, maohao); delaylms(1

30、00);break: case ' ':lcd writesz (48+8*i, 3, dot); delaylms(100);break;*/defaultbreak.void delayls(unsigned char t)_void tesllcd(void)亠char i -inx-lcdo 八dispbmp(screen)-delayls(l)-for (n-0 二64 二+)(delay1ms (loo)-lcd writecommandl (oxco+i%64) - wmstb_£_ealcdiwrirecommand2(oxco+i歩64)-)dela

31、yls (3)八dispbmp(screenl)-delayls (5)八for (7r63 二ho 二 1)delaylms (10)-lcdwj.tecommandl(oxco+564)八、wgt4s:j料鑿母 tbllcdwri-teconwmd2 (0xc0+s64)-)delayls (3)-dispbmpright(screen2)八delayls(6)八dispbmpleft(screens-delayls (6)八initlcdo -lcdwritehzp3" jiang)-二靡-6*6 s.$. hdelaylms (loo)-lcd writehz(16"

32、; 3- su) 1 瞬 16*6delayss (loo)-lcd wrir+ehz(3n 9 da)-二粧刃 16*16 浪酹箔將hdelaylms (100)八lcdwj.te二z(40 3xue)-、舅 16*16 坐delaylms(loo)-lcdwitchz(643huan)-二堺 16*16 沽s>s也浚desrylms (100)八lcdwrite=zoop3ying)-二瞬-6*6 s.$.倚delay1ms (100)-lcdwritehz(9p 3nin)-、舅 16*6、處>常的遼delaylms (loo)八lcdiwritehz(lln 3"

33、 gantanhao)-、瞬 16*6 s.s.del ay is (5)八dispccmp(screen4)-de lay is (3)- void showwendu(void) 亠inx-lcdo -lcdwribehz(16" 3wen)-delaylms (loo)-lcdiwritehz(3n 3du)-delay1ms (loo)-lcd writesz(489 3“ maohao)-de一ay1ms (loo)-)void showdianya(void)inx-lcdo -lcdw2.behz(lp 3kian)- delaylms (loo)八lcdiwriteh

34、z(3n 3ya)- delay1ms (loo)八lcdwritesz(48“ 3二naohao)八 de一ay1ms (loo)- void showy4li(void)亠inx-lcdo -lcdwribehz(16" 3、ya)- delaylms (loo)八 lcdwrite=z(3n 3" li; delaylms (loo)- lcd writesz(489 3“ maohao)- de一ay1ms (loo)- void showniu(void)亠lcd writesz(9ppn)-de一ay1ms (loo)- void showfu(void)lcd

35、_writcsz(96, 3, hao);delaylms(100);lcd_wri tesz(104, 3, v);delaylms(100);void showshcshidu(void)lcd_wri tesz(96, 3, c);delaylms (100);模數(shù)轉換模塊adc. cinclude hc8051f020.hh#include <intrins.h>嚴壓力應變片adc試驗運行此程序，壓力值將在數(shù)碼管上顯示.用手觸摸應變片 觀察壓力變化.*/#define mux temp 0x08define mux_volt 0x01#define mux_press 0x

36、02unsigned int idata temp,press,volt; unsigned char idata mux select; sfrl6adc0=0xbe;void init_adc(void)adc0cn=0x81;/ adco dataref0cn=0x07;mux select=mux temp;amx0sl=mux temp;adc0cf=(sysclk/2500000)« 3;/adc0cf |= 0x01;eie2&二0x02;interrupteie1&=0x04;compare interrupt/adco enabled; normal

37、 tracking/ mode; adco conversions are initiated/ on write to ad0busy; adco data is/ left-justified/ enable temp sensor, on-chip vref,/ and vref output buffer/ cpu on-chip temp sensor/ adc conversion clock = 2.5mhz/ pga gain = 2/禁止adco轉換結朿屮斷disable adco eoc/ 禁止 adco 窗口比較屮斷 disable adco window/ on-chi

38、p temperature/ an1.電位器/ an2.應變片long temp long;ad0int=0;adobusy=1; while(ad0int=0);void read_analog_inputs(void)/ clear conversion complete indicator/ initiate conversion/ wait for conversion completeswitch(mux_select)case mux temp:tcmp_long=adc0-42380/2; temp_iong=(temp_long*200l)/156;temp=temp_long

39、;amxosl=mux_volt; / select ain 1 for next readmux_select=mux_volt;break;case mux_volt:temp long=adc0;volt=24*tempong/655;amxosl=mux_press; / select on-chip temp sensormux_select=mux_press;break;case mux press:tcmp_long=adco;temp_long=2 4* temp_long/655;press=tempo ng;amxosl=mux_temp;mux_select=mux t

40、emp;break;default:amxosl=mux_temp;mux select=mux temp;break;unsigned int getadcvalue(char no)rcad_analog_inputs(); read_analog_inputs(); read_analog_inputs();switch (no)case 1:return temp;case 2:return volt;case 3:if (press<10) press=0; return press;test7279 部分include ”c8051f020.h”#include <in

41、trins.h>sbit hd7279 dat=p1a7;sbit hd7279_clk=p1a6;#define noselect7279 p5|=0x80 /spics4(p57)=1#define select7279 p5&=(0x80)spics4(p57)=0;#define set7279dat hd7279_dat=1#define clr7279dat hd7279 dat=0define sct7279clk hd7279_clk=1#define clr7279clk hd7279_clk=0/hd7279測試/演示程序/i/o 口初始化void delay

42、 1 ms(unsigned char t);void delay ls(unsigncd char t);void delay 1 us(unsigned char t);void send7279byte(unsigned char ch)char i;select7279; 置 cs 低電平delay lus(50); 延吋 50卩for (i=0;i<8;i+)if (ch&0x80) /輸出 7 位到 hd7279a 的 data 端set7279dat;elseclr7279dat;set7279clk; 置 clk 高電平ch=ch« 1; 待發(fā)數(shù)據(jù)左移d

43、elay lus(8);/52 時 和clr7279clk; 置 clk 低電平delay lus(8); 延時 8pclr7279dat;發(fā)送完畢，data端置低 返回unsigned char receive7279byte(void)unsigned char i,ch;ch=o;sct7279dat; /data端置為高電平，輸入狀態(tài)delay lus(50); 延吋 50卩for (i=0;i<8;i+)set7279clk; 置 clk 高電平delay lus(8);/52 時 和ch=ch«l; 接收數(shù)據(jù)左移1位if(hd7279_dat)ch+=l; 接收1位

44、數(shù)據(jù)clr7279clk; 置 clk 低電平delay lus(8);/52 時 和clr7279dat;接收完畢，data端重新置成低電平(輸出狀態(tài))return ch;void flashled(unsigncd char no)char i;send7279byte(0x88); 發(fā)閃爍指令i=0x1;while (no)i=i«l;no-;scnd7279bytch); /i 閃爍noselect7279; 置 cs 高電平嚴void blankled(unsigned char ch)send7279byte(0x98); file:/發(fā)消隱指令send7279byte(

45、ch);file:/l-顯示 0消隱*/void moveleft(void)send7279byte(0xal); 發(fā)左移指令noselect7279; 置 cs 高電平void moveright(void)send7279byte(0xa0); 發(fā)右移指令noselect7279; 置 cs 高電平unsigned char code bdseg=0x7e,0x30,0x6d,0x79, 0 1 2 30x33,0x5b,0x5f,0x70, / 4 5 6 70x7f,0x7b,0x77,0xlf, / 8 9 a b 0x4e,0x3d,0x4f,0x47, / c d e f0x0

46、0,0x01;嚴;b6;bl|bo |b5;small;b2| b3 |b4;.b7*/void displed(char *dispbuf,char showdot)/showdot 顯示小數(shù)點位 char i,ch;showdot;for (i=0;i<6;i+)ch=dispbufi;if(ch>=,a,) && (ch<=*f)ch='a'ch+=0xa;if(ch>=,a,) && (ch<=f)ch-a,;ch+=0xa;send7279byte(0x90+5-i); /不譯碼if (ch=r *)sen

47、d7279byte(0x00);elseif(ch=')send7279byte(0x01);elseif(showdot=i)send7279byte(0x80|bdsegch&oxof); elsesend7279byte(bdsegch&oxof);noselect7279; 置 cs 高電平char getkeyvalue(void)char key value;if(cptlc n&0x40) retum/無鍵按下send7279byte(0xl5); 發(fā)讀鍵盤指令keyvalue=receive7279byte();noselect7279; 置 cs 高電平 return kcyvaluc;void waitkeyoff(void)while (!(cptlcn&0x40);void test7279(bit loopflag)char i,keyvalue;delaylms(25); 等待25ms復位時間 scnd727