51单片机蜂鸣器demo.zip

#include "reg52.h" #include "intrins.h" /* ********************************************************************** * 本地宏定义 ********************************************************************** */ #define uint unsigned int #define uchar unsigned char typedef unsigned char u8; // 重命名类型 typedef unsigned int u16; sbit voice=P1^5; #define KEY_PORT P1 // 矩阵按键接在P1端口 #define DIG_PORT P0 // 共阴极数码管段码经74HC573接P0端口 sbit gA = P2^2; // 38译码器输入口A sbit gB = P2^3; // 38译码器输入口B sbit gC = P2^4; // 38译码器输入口C sbit LED = P2^0; sbit LED1 = P0^0; uint C; /* 共阴极数码管显示0-F的段码编码值 */ unsigned char code gDuanMa[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; /* ********************************************************************** * 低音区 ********************************************************************** */ #define L_dao 262 #define L_re 294 #define L_mi 330 #define L_fa 349 #define L_sao 392 #define L_la 440 #define L_xi 494 /* ********************************************************************** * 中音区 ********************************************************************** */ #define dao 523 // 音符1， 频率为523HZ，下面依次类推 #define re 587 #define mi 659 #define fa 698 #define sao 784 #define la 880 #define xi 987 /* ********************************************************************** * 高音区 ********************************************************************** */ #define H_dao 1064 #define H_re 1175 #define H_mi 1318 #define H_fa 1397 #define H_sao 1586 #define H_la 1760 #define H_xi 1967 /* ********************************************************************** * 小星星歌谱 ********************************************************************** */ uint code sound_littlestar[]={ dao, dao, sao, sao, la, la, sao, fa, fa, mi, mi, re, re, dao, sao, sao, fa, fa, mi, mi, re, sao, sao, fa, fa, mi, mi, re, dao, dao, sao, sao, la, la, sao, fa, fa, mi, mi, re, re, dao, 0xff}; /* ********************************************************************** * 生日快乐歌谱 ********************************************************************** */ uint code sound_birthday[]={ L_sao, L_sao, L_la, L_sao, dao, L_xi, L_sao, L_sao, L_la, L_sao, re, dao, L_sao, L_sao, sao, mi, dao, L_xi, L_la, fa, fa, mi, dao, re, dao, 0xff}; /* ********************************************************************** * 圣诞歌歌谱 ********************************************************************** */ uint code sound_christmas[]={ mi, mi, mi, mi, mi, mi, mi, sao, dao, re, mi, fa, fa, fa, fa, fa, mi, mi, mi, mi, mi, re, re, mi, re, sao, 0xff}; /* ********************************************************************** * 小星星节拍 ********************************************************************** */ uchar code JP_littlestar[] = { 2,2,2,2,2,2,4, 2,2,2,2,2,2,4, 2,2,2,2,2,2,4, 2,2,2,2,2,2,4, 2,2,2,2,2,2,4, 2,2,2,2,2,2,4, }; /* ********************************************************************** * 生日快乐节拍 ********************************************************************** */ uchar code JP_birthday[] = { 1,1,2,2,2,4, 1,1,2,2,2,4, 1,1,2,2,2,2,4, 1,1,2,2,2,4, }; /* ********************************************************************** * 圣诞歌节拍 ********************************************************************** */ uchar code JP_christmas[] = { 1,1,2,1,1,2, 1,1,1,1,2, 1,1,2,1,1,2,1, 1,1,1,1,1,1,2,2, }; /* ********************************************************************** * 定义延迟200ms的函数 ********************************************************************** */ void delay200ms(void); void playMusic(uchar i, uchar j,uchar sound[], uchar jp[]); int PWM_Low,Clock=500; void delay(unsigned int x) { int i; for(i=0;i<x;i++); } /* ********************************************************************** * 函数主程序 ********************************************************************** */ void main(void) { uchar i, j; EA = 1; ET0 = 1; TMOD = 0x00; while(1) { // playMusic(i, j, sound_christmas, JP_christmas); LED1 = 1; delay200ms(); delay200ms(); LED1 = 0; delay200ms(); delay200ms(); // for(PWM_Low=Clock;PWM_Low>0;PWM_Low--) // { // LED = 1; // LED1=1; // delay(PWM_Low); // LED = 0; // LED1=0; // delay(Clock-PWM_Low); // } // // for(PWM_Low=0;PWM_Low<Clock;PWM_Low++) // { // LED = 1; // LED1=1; // delay(PWM_Low); // LED = 0; // LED1=0; // delay(Clock-PWM_Low); // } } } time0() interrupt 1 using 1 { voice = !voice; TH0 = (8192 - C) / 32; TL0 = (8192 - C) % 32; } void delay200ms(void) //?? 0us { unsigned char a,b,c; for(c=4;c>0;c--) for(b=116;b>0;b--) for(a=214;a>0;a--); _nop_(); //if Keil,require use intrins.h } void playMusic(uchar i, uchar j, uchar sound[], uchar jp[]) { i = 0; while(sound_littlestar[i] != 0xff) { C = 460830 / sound_littlestar[i]; TH0 = (8192 - C) / 32; TL0 = (8192 - C) % 32; TR0 = 1; for(j = 0; j < JP_littlestar[i]; j++) { LED1 = !LED1; delay200ms(); } TR0 = 0; i++; } }