fengmingqi.zip_蜂鸣器实现7_蜂鸣器音谱_驱动蜂鸣器

#include <reg52.h> sbit speaker = P0^0; unsigned char timer0h, timer0l, time; code unsigned char FREQH[] = { 0xF2, 0xF3, 0xF5, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC, 0xFC, 0xFD, 0xFD, 0xFD, 0xFD, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF}; code unsigned char FREQL[] = { 0x42, 0xC1, 0x17, 0xB6, 0xD0, 0xD1, 0xB6, 0x21, 0xE1, 0x8C, 0xD8, 0x68, 0xE9, 0x5B, 0x8F, 0xEE, 0x44, 0x6B, 0xB4, 0xF4, 0x2D, 0x47, 0x77, 0xA2, 0xB6, 0xDA, 0xFA, 0x16}; code unsigned char sszymmh[] = { 6, 2, 3, 5, 2, 1, 3, 2, 2, 5, 2, 2, 1, 3, 2, 6, 2, 1, 5, 2, 1, 6, 2, 4, 3, 2, 2, 5, 2, 1, 6, 2, 1, 5, 2, 2, 3, 2, 2, 1, 2, 1, 6, 1, 1, 5, 2, 1, 3, 2, 1, 2, 2, 4, 2, 2, 3, 3, 2, 1, 5, 2, 2, 5, 2, 1, 6, 2, 1, 3, 2, 2, 2, 2, 2, 1, 2, 4, 5, 2, 3, 3, 2, 1, 2, 2, 1, 1, 2, 1, 6, 1, 1, 1, 2, 1, 5, 1, 6, 0, 0, 0}; void t0int() interrupt 1 { TR0 = 0; speaker = !speaker; TL0 = timer0l; TR0 = 1; } void delay(unsigned char t) { unsigned char t1; unsigned long t2; for(t1 = 0; t1 < t; t1++) for(t2 = 0; t2 < 8000; t2++); TR0 = 0; } void song() { TH0 = timer0h; TL0 = timer0l; TR0 = 1; delay(time); } void main(void) { unsigned char k, i; TMOD = 1; ET0 = 1; EA = 1; while(1) { i = 0; time = 1; while(time) { k = sszymmh[i] + 7 * sszymmh[i + 1] - 1; timer0h = FREQH[k]; timer0l = FREQL[k]; time = sszymmh[i + 2]; i += 3; song(); } } }