北邮PIC单片机实验音乐播放器.docx

#include#include#include#pragma config FNOSC = PRIPLL / Oscillator Selection#pragma config FPLLIDIV = DIV_2 / PLL Input Divider (PIC32 Starter Kit: use divide by 2 only)#pragma config FPLLMUL = MUL_20 / PLL Multiplier#pragma config FPLLODIV = DIV_1 / PLL Output Divider#pragma config FPBDIV = DIV_1 / Peripheral Clock divisor#pragma config FWDTEN = OFF / Watchdog Timer#pragma config WDTPS = PS1 / Watchdog Timer Postscale#pragma config FCKSM = CSDCMD / Clock Switching & Fail Safe Clock Monitor#pragma config OSCIOFNC = OFF / CLKO Enable#pragma config POSCMOD = XT / Primary Oscillator#pragma config IESO = OFF / Internal/External Switch-over#pragma config FSOSCEN = OFF / Secondary Oscillator Enable/调试模式选择,通过配置寄存器DEV_CONFIG0#pragma config CP = OFF / Code Protect#pragma config BWP = OFF / Boot Flash Write Protect#pragma config PWP = OFF / Program Flash Write Protect#pragma config ICESEL = ICS_PGx2 / ICE/ICD Comm Channel Select#pragma config DEBUG = ON / Debugger Disabled for Starter Kitint m=0;int n=0;int m1=0;n1=0;int p;int delay;int ts,time,savetime;int led1,led2;int freq=1911,1703,1516,1332,1275,1136,1012, 915,851,758,670,638,568,506, 458,426,379,333,319,284,253;int detime=50,56,63,72,75,84,95,100,112,126,143,150,168,189,201,225,253,287,299,336,378;int a=512,522,422,324,322,421,325,322,422,322,422,322,221,125,2,122,322,522,623,622,521,522,222,222,421,325,2,122,322,522,624,622,621,523,222,222,422,322,422,322,222,125,2,222,322,614,612,122,123,714,126,4,4,0;int b=1,2,1,0,0,0;int c=2,3,3,0,0,0;int read(int a,int i) int k=ai/100; int j=(ai-100*k)/10; p=k+7*j-7; if(p0) ts=0; else ts=floor(freqp*80/256); time=ai-100*k-10*j; return ts,time; main() AD1PCFG=0xffff;TRISB=0; T1CON=0x8030; PR1=0xffff; int q=0; while(1) read(a,q); if(time!=0) if(ts!=0)for (m=0;mtime;m+) for(n=0;ndetimep;n+) PORTBbits.RB8=1;TMR1=0;while(TMR1ts)PORTB=0;TMR1=0;while(TMR1ts) m1+; n1=m1%8; T2CON=0x8070; PR2=0Xffff; switch(n1) case 0: PORTBbits.RB9=1;break; case 1: PORTBbits.RB10=1;break; case 2: PORTBbits.RB11=1;break; case 3: PORTBbits.RB12=1;break; case 4: PORTBbits.RB13=1;break; case 5: PORTBbits.RB14=1;break; case 6: PORTB=0xfe00;break; case 7: PORTB=0;break; case 8:PORTB=0xfe00;break; default: PORTB=0xffff; TMR2=0;while(TMR225000)PORTB=0;else for (m=