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Stc-b learning board buzzer plays music
2022-07-06 15:00:00 【Wuhu hanjinlun】
function ： After the single chip computer burns the program , Press key1 Key play 《IF YOU》, Press again key1 Pause the playback , Press key2 You can switch songs to 《 Internationale 》, Press again key3 You can switch songs to 《 Lone brave 》
chip ：STC15F2K61S2
Complete engineering documents and hex The document is here
Extraction code ：1111
Preface ： I believe that your favorite thing to play after welding the board is the buzzer playing music , Every classroom passing by is basically full of all kinds of noise , After all, this thing is really fun , So I wrote a file to play other songs according to the teacher's code and score （ International song is the music code of my previous senior students , Let's make up the number ）, To be honest, this thing looks very simple , It's actually quite difficult , I have to learn music theory again , Then we can get an ideal state by constantly adjusting to various beats and tones , however if you And the lonely brave always feel that some places are not perfect , But for lousy people, it's OK to listen . Anyway, it's also entertainment
I don't say much nonsense , The code is as follows ：（ The score is at the end ）
/**********************
File name ：beep.c
explain ： Routine for playing music , Press down key1 Key to start playing music
Modify the record ：
***********************/
/**********************
be based on STC15F2K60S2 Series MCU C Language programming implementation
Use the following header file , There is no need to include "REG51.H"
***********************/
#include <STC15F2K60S2.h>
#define uint unsigned int
#define uchar unsigned char
sbit beep=P3^4; // Buzzer
sbit key1=P3^2; // Key 1
sbit key2=P3^3; // Key 2
uchar timeh,timel,jindu=0,gequ=0; // Define the reload value of the timer
bit flag; // Play flag bit
uchar code music1[] = // Music code , The song is 《IF YOU》, The format is : note , Rhythm , note , Rhythm ,
{
0x26,0x10,
0x25,0x10,
0x23,0x10,
0x21,0x10,
0x22,0x10,
0x23,0x10,
0x16,0x20,
0x22,0x08,
0x21,0x08,
0x22,0x08,
0x21,0x08,
0x22,0x08,
0x21,0x08,
0x22,0x10,
0x21,0x08,
0x22,0x08,
0x22,0x08,
0x21,0x08,
0x23,0x20,
0x26,0x10,
0x25,0x10,
0x23,0x10,
0x21,0x10,
0x22,0x10,
0x23,0x10,
0x16,0x20,
0x16,0x08,
0x17,0x10,
0x21,0x08,
0x21,0x08,
0x16,0x08,
0x21,0x08,
0x16,0x08,
0x21,0x08,
0x22,0x08,
0x23,0x08,
0x22,0x08,
0x22,0x10,
0x21,0x08,
0x21,0x08,
0x21,0x10,
0x15,0x08,
0x21,0x20,
0x31,0x10,
0x31,0x08,
0x31,0x08,
0x27,0x08,
0x26,0x08,
0x21,0x10,
0x32,0x10,
0x33,0x10,
0x36,0x10,
0x35,0x10,
0x33,0x10,
0x32,0x10,
0x31,0x10,
0x32,0x30,
0x32,0x08,
0x31,0x08,
0x32,0x08,
0x23,0x08,
0x32,0x10,
0x25,0x24,
0x25,0x08,
0x32,0x08,
0x31,0x08,
0x32,0x08,
0x33,0x24,
0x31,0x08,
0x31,0x10,
0x32,0x10,
0x33,0x10,
0x36,0x10,
0x35,0x10,
0x33,0x10,
0x32,0x10,
0x31,0x08,
0x31,0x08,
0x32,0x10,
0x31,0x30,
0x26,0x08,
0x26,0x08,
0x31,0x08,
0x26,0x08,
0x31,0x08,
0x31,0x24,
0x31,0x08,
0x31,0x08,
0x32,0x08,
0x31,0x08,
0x31,0x08,
0x31,0x24,
0x00,0x10,
};
uchar code music2[] = // The song is the international song
{
0x25, 0x10, 0x31, 0x18, 0x27, 0x08, 0x32, 0x08, 0x31, 0x08, 0x25, 0x08, 0x23, 0x08, 0x26, 0x18, 0x26, 0x08, 0x24, 0x10, 0x20, 0x08,
0x26, 0x08, 0x32, 0x18, 0x31, 0x08, 0x27, 0x08, 0x26, 0x08, 0x25, 0x08, 0x24, 0x08, 0x23, 0x30,
0x25, 0x10, 0x31, 0x18, 0x27, 0x08, 0x32, 0x08, 0x31, 0x08, 0x25, 0x08, 0x23, 0x08, 0x26, 0x20, 0x24, 0x08,
0x26, 0x08, 0x32, 0x08, 0x31, 0x08, 0x27, 0x10, 0x32, 0x10, 0x34, 0x10, 0x27, 0x10, 0x31, 0x20, 0x31, 0x08, 0x30, 0x08,
0x33, 0x08, 0x32, 0x08, 0x27, 0x20, 0x26, 0x08, 0x27, 0x08, 0x31, 0x08, 0x26, 0x08, 0x27, 0x20, 0x25, 0x08,
0x25, 0x08, 0x24, 0x08, 0x25, 0x08, 0x26, 0x18, 0x26, 0x08, 0x32, 0x18, 0x31, 0x08, 0x27, 0x20, 0x27, 0x08, 0x20, 0x08,
0x32, 0x10, 0x32, 0x18, 0x27, 0x08, 0x25, 0x08, 0x25, 0x08, 0x24, 0x08, 0x25, 0x08, 0x33, 0x20, 0x31, 0x08,
0x26, 0x08, 0x27, 0x08, 0x31, 0x08, 0x27, 0x10, 0x32, 0x10, 0x31, 0x10, 0x26, 0x10, 0x25, 0x20, 0x25, 0x08, 0x20, 0x08,
0x33, 0x08, 0x32, 0x08, 0x31, 0x20, 0x25, 0x18, 0x23, 0x08, 0x26, 0x20, 0x24, 0x08, 0x20, 0x08,
0x32, 0x0c, 0x31, 0x04, 0x27, 0x20, 0x26, 0x10, 0x25, 0x10, 0x25, 0x20, 0x25, 0x08, 0x20, 0x08,
0x25, 0x10, 0x33, 0x20, 0x32, 0x10, 0x25, 0x10, 0x31, 0x20, 0x27, 0x18,
0x27, 0x08, 0x26, 0x18, 0x25, 0x08, 0x26, 0x10, 0x32, 0x10, 0x32, 0x20, 0x32, 0x08, 0x30, 0x08,
0x33, 0x0c, 0x32, 0x04, 0x31, 0x20, 0x25, 0x18, 0x23, 0x08, 0x26, 0x20, 0x24, 0x08, 0x20, 0x08,
0x32, 0x0c, 0x31, 0x04, 0x27, 0x20, 0x26, 0x10, 0x25, 0x10, 0x33, 0x30,
0x33, 0x10, 0x35, 0x20, 0x34, 0x10, 0x33, 0x10, 0x32, 0x18, 0x33, 0x08, 0x34, 0x10, 0x30, 0x08,
0x34, 0x08, 0x33, 0x18, 0x33, 0x08, 0x32, 0x18, 0x32, 0x08, 0x31, 0x30,
0x00, 0x00
};
uchar code music3[] = // The song is for the lone brave
{
0x16,0x08,0x17,0x08,
0x21,0x08,0x22,0x08,
0x17,0x08,0x21,0x08,
0x21,0x10,0x21,0x08,
0x17,0x08,0x21,0x08,
0x22,0x08,0x17,0x08,
0x21,0x08,0x21,0x10,
0x21,0x08,0x22,0x08,
0x23,0x08,0x22,0x08,
0x23,0x08,0x22,0x08,
0x23,0x10,0x23,0x08,
0x22,0x08,0x23,0x10,
0x25,0x10,0x23,0x10,
0x16,0x08,0x17,0x08,
0x21,0x08,0x22,0x08,
0x17,0x08,0x21,0x08,
0x21,0x10,0x21,0x08,
0x17,0x08,0x21,0x08,
0x22,0x08,0x17,0x08,
0x21,0x08,0x21,0x10,
0x21,0x08,0x22,0x08,
0x23,0x08,0x22,0x08,
0x23,0x08,0x22,0x08,
0x23,0x10,0x23,0x08,
0x22,0x08,0x23,0x10,
0x25,0x10,0x23,0x10,
0x25,0x10,0x23,0x14,
0x25,0x08,0x23,0x14,
0x25,0x08,0x23,0x08,
0x25,0x08,0x26,0x08,
0x23,0x08,0x25,0x10,
0x25,0x08,0x23,0x14,
0x25,0x08,0x23,0x14,
0x25,0x08,0x23,0x08,
0x25,0x08,0x26,0x08,
0x23,0x08,0x25,0x10,
0x25,0x08,0x25,0x08,
0x23,0x08,0x22,0x08,
0x22,0x10,0x22,0x10,
0x21,0x08,0x23,0x08,
0x23,0x08,0x22,0x08,
0x22,0x10,0x22,0x10,
0x21,0x08,0x21,0x08,
0x16,0x20,0x25,0x08,
0x25,0x08,0x23,0x08,
0x22,0x08,0x22,0x10,
0x22,0x10,0x21,0x08,
0x23,0x08,0x23,0x08,
0x22,0x08,0x22,0x10,
0x22,0x10,0x21,0x08,
0x21,0x08,0x16,0x20,
0x00
};
uchar code quzi[] = // This array data is the reload value of each note in the timer , The first column is high , The second column is low // Time
{
0xf8,0x8c, // Low octave , low 1
0xf9,0x5b,
0xfa,0x15, // low 3
0xfa,0x67,
0xfb,0x04, // low 5
0xfb,0x90,
0xfc,0x0c, // low 7
0xfc,0x44, // The central C transfer
0xfc,0xac, // in 2
0xfd,0x09,
0xfd,0x34, // in 4
0xfd,0x82,
0xfd,0xc8, // in 6
0xfe,0x06,
0xfe,0x22, // High octave , high 1
0xfe,0x56,
0xfe,0x6e, // high 3
0xfe,0x9a,
0xfe,0xc1, // high 5
0xfe,0xe4,
0xff,0x03 // high 7
};
/**********************
The name of the function ：void delay(unsigned int xms)
Function description ： Time delay
Entrance parameters ：xms： Enter the millisecond value that needs to be delayed
Export parameters ： nothing
remarks ：
***********************/
void delay(unsigned int xms)
{
uint i,j;
for(i=xms; i>0; i--)
for(j=124; j>0; j--);
}
/**********************
The name of the function ：uchar quyin(uchar tem)
Function description ： stay quzi Array , find music The reload value of the simplified musical note defined by the array , And return it to quzi Position in array
Entrance parameters ：tem：music The musical notes defined in the array
Export parameters ： The return is tem The notes are quzi The position value in the array
remarks ：
***********************/
uchar quyin(uchar tem)
{
uchar qudiao,jp,weizhi; // Define the tune , Notes and positions
qudiao=tem/16; // high 4 Bit is the tune value
jp=tem%16; // low 4 Bit is a note
if(qudiao==1) // When the tune value is 1 when , It's a low octave , The lower octave is quzi The base address in the array is 0
qudiao=0;
else if(qudiao==2) // When the tune value is 2 when , It's the middle octave , The middle octave is at quzi The base address in the array is 14
qudiao=14;
else if(qudiao==3) // When the tune value is 3 when , It's a high octave , The high octave is quzi Array , The base address is 28
qudiao=28;
weizhi=qudiao+(jp-1)*2; // Add a note to the base address as an offset , You can locate this note at quzi Position in array
return weizhi; // Return this location value
}
/**********************
The name of the function ：void playmusic()
Function description ： Play music
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void playmusic()
{
uchar p,m,tem; //m For the beat
while(1)
{
if(flag==1) // If the flag bit for playback is 1 Then play music
{
if(gequ==0) // Song selection bit is 0, Then play the same song
{
p=music1[jindu];
if(p==0x00) // If you come across an end , Time delay 1 second , Go back to the beginning and do it again
{
jindu=0;
delay(1000);
break;
}
else if(p==0xff) // If you encounter a pause , Time delay 100ms, Continue to take the next note
{
jindu=jindu+1;
delay(100);
TR0=0;
break;
}
else // Normally take notes and beats
{
tem=quyin(music1[jindu]); // Take out the current note at quzi The position value in the array
timeh=quzi[tem]; // Reload the timer corresponding to the note to timeh and timel
timel=quzi[tem+1];
jindu++;
TH0=timeh; // hold timeh and timel Assign timer
TL0=timel;
m=music1[jindu]; // Get the beat
jindu++;
}
TR0=1; // Turn on the timer 1
delay(m*180); // Wait for the beat to complete , adopt P3^4 Audio output port
TR0=0; // Turn off timer 1
beep=0; // send beep Port set 0, Protect buzzer
}
else if(gequ==1) // Song selection bit is 1, Then play the little donkey
{
p=music2[jindu];
if(p==0x00) // If you come across an end , Time delay 1 second , Go back to the beginning and do it again
{
jindu=0;
delay(1000);
break;
}
else if(p==0xff) // If you encounter a pause , Time delay 100ms, Continue to take the next note
{
jindu=jindu+1;
delay(100);
TR0=0;
break;
}
else // Normally take notes and beats
{
tem=quyin(music2[jindu]); // Take out the current note at quzi The position value in the array
timeh=quzi[tem]; // Reload the timer corresponding to the note to timeh and timel
timel=quzi[tem+1];
jindu++;
TH0=timeh; // hold timeh and timel Assign timer
TL0=timel;
m=music2[jindu]; // Get the beat
jindu++;
}
TR0=1; // Turn on the timer 1
delay(m*300); // Wait for the beat to complete , adopt P3^4 Audio output port
TR0=0; // Turn off timer 1
beep=0; // send beep Port set 0, Protect buzzer
}
else if(gequ==2) // Song selection bit is 2, Then play the city of the sky
{
p=music3[jindu];
if(p==0x00) // If you come across an end , Time delay 1 second , Go back to the beginning and do it again
{
jindu=0;
delay(1000);
break;
}
else if(p==0xff) // If you encounter a pause , Time delay 100ms, Continue to take the next note
{
jindu=jindu+1;
delay(100);
TR0=0;
break;
}
else // Normally take notes and beats
{
tem=quyin(music3[jindu]); // Take out the current note at quzi The position value in the array
timeh=quzi[tem]; // Reload the timer corresponding to the note to timeh and timel
timel=quzi[tem+1];
jindu++;
TH0=timeh; // hold timeh and timel Assign timer
TL0=timel;
m=music3[jindu]; // Get the beat
jindu++;
}
TR0=1; // Turn on the timer 1
delay(m*200); // Wait for the beat to complete , adopt P3^4 Audio output port
TR0=0; // Turn off timer 1
beep=0; // send beep Port set 0, Protect buzzer
}
}
else // The playback flag bit is not 1 when , Pause music
while(flag!=1);
}
}
/**********************
The name of the function ：void init_sys()
Function description ： System initialization , The function is to configure IO mouth
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void init_sys()
{
P0M0=0xff; // Set push-pull mode
P0M1=0x00;
P2M0=0x08;
P2M1=0x00;
P3M0=0x10;
P3M1=0x00;
P4M0=0x00;
P4M1=0x00;
P5M0=0x00;
P5M1=0x00;
}
/**********************
The name of the function ：void init()
Function description ： Initialization of timers and external interrupts
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void init()
{
TMOD=0x01; // Set the timer 0, Timing mode 1,16 Bit manual reload mode
TH0=0xD8; // Set initial value of timing
TL0=0xEF;
IE=0x87; // 1000 0111 EA=1,EX0=1,ET0=1,EX1=0;
IP=0x02; // 0000 0010 PT0=1; Timer 0 High priority
TR0=0; // Timer 0 Began to run
beep=0; // send beep Port set 0, Protect buzzer
}
void main()
{
init_sys(); // System initialization
init();
P0=0x00;
key1=1; // Set the two keys to the input state , Detection interrupt
key2=1;
flag=0; // The playback flag bit is cleared
while(1)
{
playmusic(); // Play music function
}
}
/**********************
The name of the function ：void tim1() interrupt 1
Function description ： Timer 0 Interrupt handling , Reinstall the value , And put beep Value reversal , Generate square waves
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void tim1() interrupt 1 // The timer controls the frequency
{
TH0=timeh; // Assign initial value to
TL0=timel;
beep=~beep; // Interruption makes beep The flip produces a square wave
}
/**********************
The name of the function ：void ex1() interrupt 0
Function description ： Press the button 1 External interruption of , Invert the flag bit , The function is to pause and play music
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void ex1() interrupt 0
{
delay(5);
if(key1==0) // Judge key1 Whether to press
{
delay(5);
if(key1==0)
{
while(!key1);
flag=~flag; // The playback interrupt bit is reversed , Play or pause
}
}
}
/**********************
The name of the function ：void ex2() interrupt 2
Function description ： Press the button 2 External interruption of , The function is to switch songs
Entrance parameters ： nothing
Export parameters ： nothing
remarks ：
***********************/
void ex2() interrupt 2
{
delay(5);
if(key2==0) // Key key2 Press down , Switch songs
{
jindu=0; // The progress of the song is cleared , Sing from the beginning
gequ++; // Next song
if(gequ==3) // Get to the last song and tune to the first song
gequ=0;
}
}
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