# include "reg51. H" 
# include "intrins. H" 
# include "music. H" 
//# define uchar unsigned char 
//# define uint unsigned int 
Sbit ADCRD=P3 ^ 7;//define ADC0804 RD port 
Sbit ADCWD=P3 ^ 6;//define ADC0804 WD port 
Sbit xuantong=P2 ^ 0;//strobe ADC0804 control foot 
Sbit led=P2 ^ 1; 
Sbit INTR=P3 ^ 2; 
INT8U Data; 
INT8U time; 
INT8U PWM. 
INT8U flag1=0; 
INT8U flag2=0; 
INT8U flag3=0; 
# define Time_init 78 
//void delayms (INT8U x) 
//{
//INT8U I, j; 
//for (I=x; i> 0; I -) 
//for (j=110; J> 0; J -); 
//} 
Void ADC_init () 
{
ADCWD=1; 
_nop_(); 
ADCWD=0;//start A/D conversion 
_nop_(); 
ADCWD=1; 
_nop_(); 
//delayms (2000);//start later, leave more time for AD conversion 
//P1=0 XFF;//read digital signal when the P1 mouth first buy 1 
//ADCRD=1; 
//_nop_ (); 
//ADCRD=0;//A/D reading can make 
//_nop_ (); 
//Data=https://bbs.csdn.net/topics/P1; 
} 
Void Timer0Init () 
{
TMOD |=0 x20;//for timer 0 mode choice, work mode 0, only open the startup with TR0, 
//IP=0 x10; 
//TMOD |=0 x20;//set the T1 to baud rate generator 
SCON=0 x50;//0101000 0 8 bits of data, and white parity 
PCON=0 x00;//PCON=0; 
TH1=256 - (OSC_FREQ COMM_BAUD_RATE/32/12);//set to 9600 baud rate 
TL1=256 - (OSC_FREQ COMM_BAUD_RATE/32/12); 
TR1=1;//open the timer 1 
REN=1;//serial port 1 received enabled 
ES=1;//serial port interrupts enabled 
 1
TH0=(8192 - Time_init)/32;//initialization time 
TL0=(8192 - Time_init) % 32;//
ET0=1;//open the timer 0 interruption allows 
EA=1;//open the total interruption 
TR0=1;//open the timer 
} 
Void Timer0 () interrupt 1 
{
TH0=(8192 - Time_init)/32;//to assignment 
TL0=(8192 - Time_init) % 32; 
time++; 
If (time==100)//
Time=0; 
Else if (time<=PWM) 
{
Led=1; 
} 
The else 
Led=0; 
} 
Void Int0Init ()//A/D conversion external interrupt 
{
IT0=1; 
EX0=1; 
EA=1; 
} 
Void Int0 () interrupt 0 
{
If (INTR==0) 
{
P1=0 XFF;//read digital signal when the P1 mouth first buy 1 
//ADCRD=1; 
//_nop_ (); 
ADCRD=0;//A/D reading can make 
_nop_(); 
Data=https://bbs.csdn.net/topics/P1; 
ADCRD=1; 
_nop_(); 
} 
ADC_init (); 
} 
Void main () 
{
//Serial_init ();//serial port register initialization setting 
Delay_Ms (1000);//delay, fully initialized 
Xuantong=0;//strobe ADC0804 chip 
Timer0Init (); 
ADC_init (); 
Int0Init (); 
While (1) 
{

If (Data<50 & amp; & Data>=0)//duty ratio 20% 
{
If (flag1==0) 
{
Flag1=1; 
Flag2=0; 
Flag3=0; 
X0b Play_music (0); 
} 
PWM=20; 
} 
Else if (Data>=50 & amp; & Data<80)//duty ratio 50% 
{
//if (flag2==0) 
//{
//flag2=1; 
//flag1=0; 
//flag3=0; 
//Play_music x0c (0); 
//} 
PWM=50; 

} 
The else//duty ratio 90% 
{
//if (flag3==0) 
//{
//flag3=1; 
//flag2=0; 
//flag1=0; 
//Play_music x0d (0); 
//} 
PWM=90; 
} 
//if (time==100)//
//time=0; 
//else if (time<=PWM) 
//{
//the led=1; 
//} 
//else 
//the led=0; 
} 
} 

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
- functions: chip electrically specified respectively the first and second song, basic application for users to test 
- date: 2013-05-06 
- running environment: on STC crystals: 11.0592 M baud rate: 9600 
- note: on the 51 development in science and technology's board debugging OK - STC89C516RD + 
1, the test program must be module or chip package equipment online, such as U disk, TF card, FLASH 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
# include "REG52. H" 
# include "music. H" 
9600////# define COMM_BAUD_RATE serial port baud rate 
11059200////# define OSC_FREQ run crystals: 11.05926 MHZ 
//typedef unsigned char INT8U; 
//typedef unsigned int INT16U; 
//typedef unsigned long INT32U; 
The static INT8U Send_buf [10]={0}; 
Void Delay_Ms (INT32U z) 
{
INT32U x=0, y=0; 
For (x=110; x> 0; X -) 
For (y=z; Y> 0; Y -); 
} 
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
Initialization - functional description: serial port 1 
- note: set to 9600 baud rate 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
//void Serial_init (void) 
//{
////IP=0 x10; 
//TMOD |=0 x20;//set the T1 to baud rate generator 
//SCON=0 x50;//0101000 0 8 bits of data, and white parity 
//PCON=0 x00;//PCON=0; 
//TH1=256 - (OSC_FREQ COMM_BAUD_RATE/32/12);//set to 9600 baud rate 
//TL1=256 - (OSC_FREQ COMM_BAUD_RATE/32/12); 
//TR1=1;//open the timer 1 
//REN=1;//serial port 1 received enabled 
//ES=1;//serial port interrupts enabled 
 1//} 
Void Uart_PutByte INT8U (ch) 
{
SBUF=ch; 
//while (! TI); 
//TI=0; 
} 
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
- functional description: a serial port to send commands [including control and query] 
- parameters description: CMD: it means the control instruction, please refer to instruction table, also include query related instructions 
Feedback: if you need reply [0: no need to reply 1: need to reply] 
Data: the parameters of the transmission 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
Void SendCmd (INT8U len) 
{
INT8U I=0; 
X7e Uart_PutByte (0);//start 
for(i=0; i{
Uart_PutByte (Send_buf [I]); 
} 
Uart_PutByte xef (0);//end 
} 
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