噪声监测C程序.doc

整个程序分为2部分，主体为噪声监测，另外有1602显示驱动（一）1602.c/*文件名:lcd1602简要描述: lcd初始化：void lcd_init() lcd写指令：void lcd_w_cmd(uchar cmd) lcd写数据：void lcd_w_data(uchar dat) lcd显示位置设置：void lcd_show_set(uchar num)编写者：修改记录：*/#include #include #include lcd1602.h#define uint unsigned int#define uchar unsigned charsbit lcden=P17;sbit lcdwr=P16;sbit lcdrs=P15;uchar lcd_busy() uchar result; lcdrs = 0; lcdwr = 1; _nop_(); lcden = 1; _nop_(); result = (uchar)(P0 & 0x80); lcden = 0; return result;void lcd_w_cmd(uchar cmd) while(lcd_busy(); lcdrs=0; lcdwr=0; lcden=0; P0=cmd; _nop_(); lcden=1; _nop_(); lcden=0; lcdrs=1;void lcd_w_data(uchar dat) while(lcd_busy(); lcdrs=1; lcdwr=0; lcden=0; P0=dat; _nop_(); lcden=1; _nop_(); lcden=0; lcdrs=1;void lcd_show_set(uchar num) lcd_w_cmd(0x80|num);/0-27H,40H-67Hvoid lcd_init() lcd_w_cmd(0x38); _nop_(); lcd_w_cmd(0x0f); _nop_(); lcd_w_cmd(0x06); _nop_(); lcd_w_cmd(0x01); _nop_();(二)噪声监测Noise.c#include #include lcd1602.h#include alldelay.htypedef unsigned char uchar;typedef unsigned char uint;/unsigned char welcome=welcome!;unsigned char Show06=Noise:;unsigned char Show15=dB;unsigned int code Countnum66=11, 13, 15, 17, 19, 22, 24, 27, 31, 34, 39, 44, 49, 55, 62, 69, 78, 87, 98, 110, 123, 138, 155, 174, 195, 219, 246, 276, 309, 347, 390, 438, 491, 550, 618, 693, 778, 873, 979, 1099, 1233,1383,1552,1742,1954,2193,2460,2760,3097,3475, 3899,4375,4909,5508,6180,6934,7780,8729,9794,10989,;unsigned char code dB602=31,32,33,34,35,36,37,38,39,40, 41,42,43,44,45,46,47,48,49,50, 51,52,53,54,55,56,57,58,59,60, 61,62,63,64,65,66,67,68,69,70, 71,72,73,74,75,76,77,78,79,80, 81,82,83,84,85,86,87,88,89,90,;/全局变量/uint count;uchar t;/函数声明/ /主函数/void main(void)uint m,n; uint i; long_delay(10000); EA=0; ET1=0; TMOD=0X15; TH0=0; TL0=0; TH1=(65536-50000)/256; TL1=(65536-50000)%256; lcd_init();delay_ms(10);lcd_show_set(0x05);for(i=0; i8; i+)lcd_w_data(welcomei); delay_ms(5); long_delay(30000); long_delay(30000);lcd_w_cmd(0x01); delay_ms(50); lcd_show_set(0x00); delay_ms(50);for(i=0; i6; i+)lcd_w_data(Show0i); delay_ms(5); lcd_show_set(0x4a); lcd_w_cmd(0x0d); delay_ms(50); for(i=0; iCountnumi) i+; m=i; for(n=0; n2; n+) lcd_w_data(dBmn); delay_ms(5); void Timer1() interrupt 3 TR1=0; TH1=(65536-50000)/256; TL1=(65536-50000)%256; t+; if(t=20) t=0; TR0=0; count=(TH0*256+TL0); TH0=0; TL0=0; TR0=1; TR1=1;涉及到的延时程序在Alldelay.c文件中/*功能:延时函数*/void long_delay(unsigned int s)/长延时 unsigned int i; for(i=0; is; i+); for(i=0; is; i+);void delay_ms(unsigned char ms)/ MS延时unsigned char k; whi