#include <sys/io.h> #include <unistd.h> void play(unsigned int* freq, unsigned int* delay); main() { int i; unsigned int freq[]={ 330 , 392 , 330 , 294 , 330 , 392 , 330 , 394 , 330 , 330 , 392 , 330 , 294 , 262 , 294 , 330 , 392 , 294 , 262 , 262 , 220 , 196 , 196 , 220 , 262 , 294 , 330 , 262 , 0 } ; unsigned int time[]={ 50 , 50 , 50 , 25 , 25 , 50 , 25 , 25 , 100, 50 , 50 , 25 , 25 , 50 , 50 , 25 , 25 , 100, 50 , 25 , 25 , 50 , 25 , 25 , 50 , 25 , 25 , 100 }; unsigned int freq2[]={ 196,262,262,262,330,294,262,294,330,294,262, 330,394,440,440,394,330,330,262,294,262,294, 330,294,262,230,230,196,262,440,394,330,330, 262,294,262,294,440,394,330,330,394,440,523, 394,330,330,262,294,262,294,330,294,262,230, 230,196,262,440,394,330,330,262,294,262,294, 440,394,330,330,394,440,523,394,330,330,262, 294,262,294,330,294,262,230,230,196,262,0 }; unsigned int time2[]={ 25,38,12,25,25,38,12,25,12,12,56,25,25,50,25, 38,12,12,12,38,12,25,12,12,38,12,25,25,100,25, 38,12,12,12,38,12,25,25,38,12,25,25,100,25,38, 12,12,12,38,12,25,12,12,38,12,25,25,100,25,38, 12,12,12,38,12,25,25,38,12,25,25,100,25,38,12, 12,12,38,12,25,12,12,38,12,25,25,100 }; unsigned int freq_alert[]={ 2000, 2400, 0 }; unsigned int time_alert[]={ 50, 60 }; for(i = 0; i < 5; i++) { play(freq_alert, time_alert); } play(freq2, time2); } void play(unsigned int* freq, unsigned int* time) { int i; for(i=0;freq[i]!=0;i++) { speaker(freq[i], time[i]); } } int speaker(unsigned int freq,unsigned int delay) { static int flag=0,bit; if(flag==0) { flag=1; iopl(3); } outb(0xb6,0x43); outb((freq & 0xff),0x42); outb((freq >> 8),0x42); bit=inb(0x61); outb(3 | bit,0x61); usleep(10000*delay); outb(0xfc | bit,0x61); }
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