畢業(yè)論文-用于自動(dòng)化生產(chǎn)線的頻率計(jì)設(shè)計(jì)

1、合肥師范學(xué)院2015屆本科畢業(yè)論文（設(shè)計(jì)）附錄（A）：系統(tǒng)原理圖附錄（B)：系統(tǒng)仿真圖附錄（C)：系統(tǒng)PCB圖附錄（D)：系統(tǒng)源程序/*/連接框圖： _/ | P1.0 |-RS/ | P1.1 |-RW/ | P1.2 |-E/ | P0 |-DB/ | P3.4 |-19999hz的輸入 / | P3.5 |-19999KHZ輸入 (分頻后)/*#include unsigned long int fre; unsigned char time;unsigned int count;unsigned int count1;/端口及函數(shù)說明sbit LCD_RS=P10; /片選信號(hào) sbi

2、t LCD_RW=P11; /讀寫信號(hào) sbit LCD_E=P12; /使能信號(hào) #define LCD_DB P0/數(shù)據(jù)信號(hào) unsigned char character10=0;/在屏幕上顯示的字符串 unsigned char character_1=fre= Hz;unsigned char FLAG = 0;void LCD_init(void);/初始化函數(shù) void LCD_write_command(unsigned char command);/寫指令函數(shù) void LCD_write_data(unsigned char dat);/寫數(shù)據(jù)函數(shù) void LCD_dis

3、p_char(unsigned char x,unsigned char y,unsigned char dat);/在某個(gè)屏幕位置上顯示一個(gè)字符,X（0-15),y(1-2)void delay_n40us(unsigned int n);/延時(shí)函數(shù) void timer_init(); /中斷初始化函數(shù) /void delay_n40us(unsigned int n) /延時(shí)函數(shù) unsigned int i;unsigned char j; for(i=n;i0;i-)for(j=0;j2;j+); void delay_1s()unsigned int i,j;for(i = 0;i

4、100;i+)for(j = 0;j1000;j+); void LCD_init(void) /液晶初始化函數(shù) LCD_write_command(0 x38);/設(shè)置8位格式，2行，5x7LCD_write_command(0 x38);/設(shè)置8位格式，2行，5x7LCD_write_command(0 x38);/設(shè)置8位格式，2行，5x7 切記要寫三遍！ LCD_write_command(0 x0c);/整體顯示，關(guān)光標(biāo)，不閃爍 LCD_write_command(0 x06);/設(shè)定輸入方式，增量不移位LCD_write_command(0 x01);/清除屏幕顯示 delay_n

5、40us(100);/清屏延時(shí) void LCD_write_command(unsigned char dat) /寫命令函數(shù) LCD_DB=dat;LCD_RS=0;/指令 LCD_RW=0;/寫入 LCD_E=1; /使能 LCD_E=0;delay_n40us(1);/寫命令延時(shí) void LCD_write_data(unsigned char dat) /寫數(shù)據(jù)函數(shù) LCD_DB=dat;LCD_RS=1;/數(shù)據(jù) LCD_RW=0;/寫入 LCD_E=1;/使能 LCD_E=0;delay_n40us(1); /寫數(shù)據(jù)延時(shí) void LCD_disp_char(unsigned c

6、har x,unsigned char y,unsigned char dat)/顯示一個(gè)字符 unsigned char address;if(y=1) address=0 x80+x; /顯示在第一排的時(shí)候的x的地址 else address=0 xc0+x; /顯示在第二排的時(shí)候的x的地址 LCD_write_command(address); /輸入地址 LCD_write_data(dat); /輸入數(shù)據(jù) void LCD_disp_num(unsigned char x,unsigned char y,unsigned char dat)/顯示一個(gè)數(shù)字unsigned char a

7、ddress;if(y=1) address=0 x80+x; /顯示在第一排的時(shí)候的x的地址 else address=0 xc0+x; /顯示在第二排的時(shí)候的x的地址 LCD_write_command(address); /輸入地址 LCD_write_data(dat+48); /輸入數(shù)據(jù) void dis_num(void)unsigned char i=0,j=0,k=0;LCD_write_command(0 x01);/清除屏幕顯示character0 = fre/1000000;character1 = fre/100000%10;character2 = fre/10000

8、%10;character3 = fre/1000%10;character4 = fre/100%10;character5 = fre/10%10;character6 = fre%10; character7 = H;character8 = z;for(i = 0;i4;i+) /顯示fre LCD_disp_char(i+0,1,character_1i);for(i = 0;i10;i+) /判斷第一個(gè)不為0的數(shù)if(characteri!=0)break;k = 10-i-2;for(j = 0;jk;j+) /顯示所有的數(shù)字LCD_disp_num(4+j,1,characte

9、ri+); for(i = 5;i7;i+) /顯示Hz LCD_disp_char(j+4,1,character_1i);j+;void main() unsigned char i;LCD_init();timer_init(); /定時(shí)/計(jì)數(shù)器初始化 for(i = 0;i4;i+) LCD_disp_char(i+0,1,character_1i);while(1)dis_num(); /顯示 delay_1s(); void timer_init(void) /定時(shí)/計(jì)數(shù)器初始化 TMOD=0 x66; /計(jì)數(shù)器0工作工作方式2，自動(dòng)重裝初值 TH0=0; /計(jì)數(shù)器初值為0TL0=

10、0;TR0=1; /計(jì)數(shù)器開始計(jì)數(shù) ET0=1; /打開計(jì)數(shù)器0中斷 TH1=0; /計(jì)數(shù)器初值為0TL1=0;TR1=1; /計(jì)數(shù)器開始計(jì)數(shù) ET1=1; /打開計(jì)數(shù)器0中斷 RCAP2H=(65536-62500)/256; /在程序初始化的時(shí)候給RCAP2L和RCAP2H賦值， RCAP2L=(65536-62500)%256; /TH2和TL2將會(huì)在中斷產(chǎn)生時(shí)自動(dòng)使TH2=RCAP2H,TL2=RCAP2L。 TH2=RCAP2H; /12M晶振下每次中斷62.5msTL2=RCAP2L;ET2=1; /打開定時(shí)器2中斷 TR2=1; /定時(shí)器2開始計(jì)時(shí) EA=1; /開總中斷 /void timer2(void) interrupt 5 /定時(shí)器2中斷(62.5ms)double temp;time+;TF2=0; /定時(shí)器2的中斷標(biāo)志位TF2不能夠由硬件清零，所以要在中斷服務(wù)程序中將其清零if (time=16) /定時(shí)1s時(shí)間到 time=0; /計(jì)時(shí)清0 fre=(long)count*256+TL1; /count*256強(qiáng)制轉(zhuǎn)換成long型，否則將不產(chǎn)生進(jìn)位 先判斷分頻后的 FLAG = 0; if(fre2000)/200K之后讀取分頻后的頻率