蜂鳴器911報(bào)警

1、蜂鳴器911報(bào)警-定時(shí)計(jì)數(shù)器實(shí)驗(yàn)/*/  911報(bào)警聲音                                            

2、60;      */*                    設(shè)置，將蜂鳴器旁邊的跳線跳上，下載程序到實(shí)驗(yàn)班，會(huì)聽到急促的報(bào)警聲       */            /*/ 

3、                                   #include <reg51.h>#include <intrins.h>sbit SPK = P37;unsigned char frq; void delaym

4、s(unsigned char ms);main() TMOD = 0x01; frq = 0x00; TH0 = 0x00; TL0 = 0xff;  TR0 = 1; IE = 0x82;  while(1)   frq+;  delayms(1); void timer0() interrupt 1 using 1 TH0 = 0xfe; TL0 = frq; SPK = SPK; void dela

5、yms(unsigned char ms) / 延時(shí)子程序       unsigned char i; while(ms-)   for(i = 0; i < 120; i+); 看程序應(yīng)該是發(fā)出的聲音頻率越來越高，然后突然降低，再越來越高，如此循環(huán)main() TMOD = 0x01; /設(shè)定時(shí)方式1，16位定時(shí)器 frq = 0x00; TH0 = 0x00; /賦初值 TL0 = 0xff; /賦初值 TR0 = 1; /開始計(jì)數(shù) IE = 0x82;

6、 /允許中斷 while(1) frq+; /每個(gè)毫秒增加頻率，直至frq=0，頻率下降，如此循環(huán) delayms(1); void timer0() interrupt 1 using 1 TH0 = 0xfe; TL0 = frq; /根據(jù)frq改變定時(shí)器的值 SPK = SPK; /發(fā)出占空比50%的音頻#include<reg52.h>#define uint unsigned int#define uchar unsigned charsbit d=P23;uint aa;void delay(uint z);void xulei();void main() xulei(

7、); while(1) P1=0xfe; d=!d; delay(1); void delay(uint z) uint x,y; for(x=z;x>0;x-) for(y=110;y>0;y-);void xulei() aa=0; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1;void zhongduan() interrupt 1 TH0=(65536-50000)/256; TL0=(65536-50000)%256; aa+; if(aa=10) aa=0; P1=

8、0xff; delay(500); /*頭文件區(qū)*#include<reg52.h>#include<math.h>#include<absacc.h>#include<intrins.h>/*宏定義方便使用*#define uchar unsigned char#define uint unsigned int/*定義變量區(qū)*sbit dula=P26; /數(shù)碼管段選sbit wela=P27; /數(shù)碼管位選sbit lcden=P34; /LCD使能信號(hào)sbit lcdrs=P35; /LCD數(shù)據(jù)/命令選擇信號(hào)uchar code tab_n

9、ie="Nie Jinbo"uchar code tab_index=""/*函數(shù)聲明區(qū)*void lcd_dis(); /lcd顯示函數(shù)void lcd_init(); /LCD初始化函數(shù)void write_com(uchar); /寫命令函數(shù)void write_data(uchar); /寫數(shù)據(jù)函數(shù)void delay(uint); /延時(shí)函數(shù)/*主函數(shù)開始*void main()lcd_dis();while(1); /*lcd顯示函數(shù)開始*void lcd_dis()uchar n; lcd_init();write_com(1);write

10、_com(0x80+4); /設(shè)置光標(biāo)位置for(n=0;n<9;n+)write_data(tab_nien);delay(2);write_com(0x80+0x40); / 設(shè)置光標(biāo)位置for(n=0;n<15;n+)write_data(tab_indexn);delay(2);/*LCD初始化函數(shù)開始*void lcd_init()dula=0;wela=0; / 關(guān)閉數(shù)碼管顯示lcden=0;write_com(0x38); /設(shè)置顯示模式:16X2,5X7,8位數(shù)據(jù)接口write_com(0x0f); /開顯示,顯示光標(biāo),光標(biāo)閃爍write_com(0x06); /讀

11、寫一個(gè)字符后,地址指針及光標(biāo)加一,且光標(biāo)加一整屏顯示不移動(dòng)write_com(0x80); /設(shè)置光標(biāo)指針/*寫命令函數(shù)開始*void write_com(uchar com)lcdrs=0; /低電平寫命令P0=com; /寫入命令delay(3); /延時(shí)約3mslcden=1; /LCD使能端置高電平delay(5); /延時(shí)約5mslcden=0; /LCD使能端拉低電平/*寫數(shù)據(jù)函數(shù)開始*void write_data(uchar dat)lcdrs=1; /低電平寫數(shù)據(jù)P0=dat; /寫入命令delay(3); /延時(shí)約3mslcden=1; /LCD使能端置高電平delay(5

12、); /延時(shí)約5mslcden=0; /LCD使能端拉低電平/*延時(shí)函數(shù)開始*void delay(uint k)uint i,j;for(i=k;i>0;i-)for(j=110;j>0;j-);單片機(jī)問題 哪位大俠能提供一個(gè)1602液晶閃爍的程序嗎#include <reg52.h> /包括一個(gè)52標(biāo)準(zhǔn)內(nèi)核的頭文件/*/sbit RS=P24;sbit RW=P23;sbit E=P22;sbit P36=P36; sbit P20=P20; sbit P21=P21; unsigned char n,k,h,l,m;unsigned char d14='Z

13、','H', 'I','X','I','N','G','X','U','E','Y','U','A','N' /第二行要輸入的字符/*延時(shí) z ms*/void delay(unsigned int z) /延時(shí) z ms unsigned int i; unsigned char j; for(i=z;i>0;i-) for(j=110;j>0;j-);/*寫命令*/void zhiling(unsigned char a) /寫命令 E=0;RS=0;RW=0; E=1; P1=a; delay(5); /延時(shí) 5ms E=0; delay(5); /延時(shí) 5ms /*寫數(shù)據(jù)*/void shuju(unsigned char b) /寫數(shù)據(jù) E=0;RS=1;RW=0; E=1; P1=b; delay(5); /延時(shí) 5ms E=0; delay(5); /延時(shí) 5ms /*初始化*/void init() /初始化 zhiling(0x01); /清屏 zhiling(0x30); /功能設(shè)置 zhiling(0x0e)