MCU + JQ6500 voice module usage code

I was bored and made some fun stuff at home recently. I needed a module to drive a speaker to play a reminder sound. I initially bought the WT588DM01 because it came with 8M Flash and was worry-free. But it turned out that I had to buy a programmer worth more than 30 dollars to use it.

Later, I gritted my teeth and bought a JQ6500 voice module. I could burn MP3 files into it by plugging it into a computer via USB. It turned out that Shenzhen manufacturers had a good insight into the needs.

I bought it, but the information provided by the manufacturer was divided into three versions. The PCB appearance was changed, but the PDF was not updated. I had to tinker with it myself and try it out with a 51 according to the reference materials.

This is the external view of the module in the PDF. The actual product you bought looks like this:

The chip has 24 pins and the module has 16 pins. The 16 pins have not changed, but there are slight changes on the module PCB board, but it does not affect the direct use of the 16 pins led out of the module.

Module wiring schematic diagram, SPK+ and SPK- can be directly connected to a passive buzzer.

The microcontroller source program is as follows:

#include //header file

#include

/*

The ninth pin of this module, which is the RX pin, is connected to P3^1 of the microcontroller.

The tenth pin, also known as the TX pin, is connected to P3^0 of the microcontroller (if you do not process the data returned by this module, you can leave it unconnected)

At the same time, the module and the microcontroller must share the same ground and connect GND

The module can also be powered directly by the power supply on the microcontroller.

*/

typedef unsigned char uint8;

typedef unsigned int uint16;

sbit KEY1=P3^2; //First key

sbit KEY2=P3^3; // First song loop key

sbit KEY3=P3^4; //Pause key

sbit KEY4=P3^5; //Enter sleep mode

uint8 First[]={0x7E,0x04,0x03,0x00,0X01,0xEF}; //First song instruction

uint8 Next[]={0x7E,0x03,0x11,0x01,0xEF}; // First loop

uint8 Add[]={0x7E ,0x02, 0x0E, 0xEF}; // 0x0e pause

uint8 Sub[]={0x7E, 0x02, 0x0A, 0xEF}; // 0x0a enters sleep

void delay150ms(void) //error -0.000000000047us

{

    unsigned char a,b,c;

    for(c=6;c>0;c--)

        for(b=52;b>0;b--)

            for(a=220;a>0;a--);

    _nop_(); //if Keil,require use intrins.h

}

/*

* UART initialization

* Baud rate: 9600

*/

void UART_init(void)

{

    SCON = 0x50; // 10-bit uart, allow serial reception

    TMOD = 0x20; // Timer 1 works in mode 2 (auto reload) 0010 0000

    TH1 = 0xFD;

    TL1 = 0xFD; //Set the baud rate to 9600

    TR1 = 1;

}

/*

* UART sends one byte

The data type of the input parameter uint8 is the data to be sent

*/

void UART_send_byte(uint8 dat)

{

        SBUF = dat;

        while (TI == 0);

        TI = 0;

}

/*

* UART sends string 

  The first parameter is the address of the string or data to be sent.

  The second parameter is the length of the data or string to be sent

*/

void UART_send_string(uint8 *buf,uint8 len)

{ uint8 i;

        for(i=0;i                UART_send_byte(*buf++);

}

main()

{

        UART_init(); //Serial port initialization

        while (1) //A large loop that keeps detecting key presses and sending commands

        { if(KEY1==0) //If the first key is pressed, play the first segment

    { while(!KEY1); //Wait for the key to be released

                         UART_send_string(First,6);

    }                

                else if(KEY2==0) //If the second button is pressed, loop the first song

    { while(!KEY2); //Wait for the key to be released

                         UART_send_string(Next,5);

                         delay150ms(); //After testing, a delay of 150ms between two instructions works best

                         UART_send_string(First,6);

    }                

                else if(KEY3==0) //If the third button is pressed, pause the playback

                        { while(!KEY3); //Wait for the key to be released

                         UART_send_string(Add,4);

    }        

else if(KEY4==0) //If the fourth button is pressed, enter sleep mode

    { while(!KEY4); //Wait for the key to be released

                         UART_send_string(Sub,4);

    }                        

        }

}

Four buttons and a serial port are used. Every time a button is detected, the microcontroller sends a serial port command to the module JQ6500. The time between two commands should be no less than 150ms (actual measurement), otherwise there will be no response.