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硬件组件

Arduino UNO和Genuino UNO         ×  1      

catalex的串口MP3播放器  ×   1      

一些不错的朋克音乐            

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介绍

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        arduino uno，mp3模块

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如何使用CATALEX的SERIAL MP3PLAYER V1.0：

首先，像往常一样下载库：

#include <SoftwareSerial.h>
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现在我们选择将哪些Arduino引脚连接到mp3播放器并初始化串行协议。

#define ARDUINO_RX 5//should connect to TX of the Serial MP3 Player module
#define ARDUINO_TX 6//connect to RX of the module
SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX);//init the serial protocol, tell to myserial wich pins are TX and RX
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在这里，我只是从数据表翻译成#define

1 c& U* F2 U$ c# W7 s* B4 [+ @////////////////////////////////////////////////////////////////////////////////////
//all the commands needed in the datasheet(http://geekmatic.in.ua/pdf/Catalex_MP3_board.pdf)
static int8_t Send_buf[8] = {0} ;//The MP3 player undestands orders in a 8 int string
( \9 o2 Z9 Q- s% E                                //0X7E FF 06 command 00 00 00 EF;(if command =01 next song order)  
1 Y/ O" }0 w- S#define NEXT_SONG 0X01  
#define PREV_SONG 0X02  
#define CMD_PLAY_W_INDEX 0X03 //DATA IS REQUIRED (number of song)
) _" i) R! A- s; g2 h( `#define VOLUME_UP_ONE 0X04
1 s3 ~8 l  u# g4 g7 K! |* J$ p' Y#define VOLUME_DOWN_ONE 0X05
#define CMD_SET_VOLUME 0X06//DATA IS REQUIRED (number of volume from 0 up to 30(0x1E))
9 C( q+ [$ D+ a5 Y9 w#define SET_DAC 0X17
#define CMD_PLAY_WITHVOLUME 0X22 //data is needed  0x7E 06 22 00 xx yy EF;(xx volume)(yy number of song)
#define CMD_SEL_DEV 0X09 //SELECT STORAGE DEVICE, DATA IS REQUIRED
$ ~& K" m- E8 }2 L- x$ b               #define DEV_TF 0X02 //HELLO,IM THE DATA REQUIRED
#define SLEEP_MODE_START 0X0A
#define SLEEP_MODE_WAKEUP 0X0B
#define CMD_RESET 0X0C//CHIP RESET
$ }9 f4 a: ^: [0 A#define CMD_PLAY 0X0D //RESUME PLAYBACK
% W  Q2 F% ]" @1 u! ]#define CMD_PAUSE 0X0E //PLAYBACK IS PAUSED
' E5 e0 h! u4 Z( G4 x. l& a/ [#define CMD_PLAY_WITHFOLDER 0X0F//DATA IS NEEDED, 0x7E 06 0F 00 01 02 EF;(play the song with the directory \01\002xxxxxx.mp3
- f& M% Z- V9 p#define STOP_PLAY 0X16
#define PLAY_FOLDER 0X17// data is needed 0x7E 06 17 00 01 XX EF;(play the 01 folder)(value xx we dont care)
! @6 D) J5 h- x. c" n#define SET_CYCLEPLAY 0X19//data is needed 00 start; 01 close
#define SET_DAC 0X17//data is needed 00 start DAC OUTPUT;01 DAC no output
7 \* ~  \3 C$ D, V' v////////////////////////////////////////////////////////////////////////////////////

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MP3芯片不符合使用此格式的int数组[8]的命令

0x7E FF aa bb 00 xx yy EF

哪里：

第一个和最后一个int用0x7E和0xEF值固定

aa 是版本号，只需输入0x06;

bb 是前一点中列出的实际控制命令

xx 首先是数据的b int

yy 是数据的第二个int

这是构建数组的实际函数。我们只需要选择其中一个#defined命令并输入数据的值。

, H/ }" q) r- R* W' r) P% wvoid sendCommand(int8_t command, int16_t dat)
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delay(20);
Send_buf[0] = 0x7e; //starting byte
6 \  I# P7 T- u6 ^" }Send_buf[1] = 0xff; //version
) T1 h5 T2 K: d/ B% uSend_buf[2] = 0x06; //the number of bytes of the command without starting byte and ending byte
: H7 K* J( @! Y8 v! a% u8 a8 J0 }Send_buf[3] = command; //
- e# L$ M6 b' n% p+ NSend_buf[4] = 0x00;//0x00 = no feedback, 0x01 = feedback
Send_buf[5] = (int8_t)(dat >> 8);//datah
. U4 v& u3 n4 O% \Send_buf[6] = (int8_t)(dat); //datal
Send_buf[7] = 0xef; //ending byte
for(uint8_t i=0; i<8; i++)//
{
  mySerial.write(Send_buf) ;
}
}
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进入设置功能，我们需要为TF选择合适的设备并给它时间来解决：

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void setup() {
1 P4 }, `0 D6 W4 S" |( U+ PmySerial.begin(9600);
4 o8 X( D& H. S  @* s! t5 ]6 P1 C//Start our Serial coms for our serial monitor! delay(500);
) D) Q1 S4 |2 z, G//Wait chip initialization is complete   sendCommand(CMD_SEL_DEV, DEV_TF);
//select the TF card   delay(200);
//wait for 200ms }
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在循环中，我做了一个简单的播放标记为001的歌曲：

void loop()
{
$ X' z, b9 \1 L6 XsendCommand(CMD_PLAY_WITHVOLUME, 0X0F01);//play the first song with volume 15 class
' G! `  W7 s% \1 g* f% G; Sdelay(1000000);//the programm will send the play option each 100 seconds to the catalex chip
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如何将歌曲上传到SD卡：

正如他们在数据表中所说的英语非常糟糕：

file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png

我在这里做得很好

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Mp3芯片读取.mp3或.wav按字母顺序索引，因此如果我们创建名称为01,02的文件夹，并且带有名称的歌曲001xxxxx.mp3，002xxxx.mp3。我们可以确定我们正在使用的歌曲/文件夹。

EXTRA：
" B2 ^+ t! g% Z  R相同的代码，但使用硬件序列（我不得不用我的STM32板）

原理图

代码

//code rearranged by Javier Muñoz10/11/2016 ask me at javimusama@hotmail.com

#include <SoftwareSerial.h>

#define ARDUINO_RX 5//should connect to TX of the Serial MP3 Player module

#define ARDUINO_TX 6//connect to RX of the module

SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX);//init the serial protocol, tell tomyserial wich pins are TX and RX

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////////////////////////////////////////////////////////////////////////////////////

//all the commands needed in thedatasheet(http://geekmatic.in.ua/pdf/Catalex_MP3_board.pdf)

static int8_t Send_buf[8] = {0} ;//The MP3 player undestands orders in a 8 int string

                                 //0X7E FF 06 command 00 00 00 EF;(if command =01 nextsong order)

#define NEXT_SONG 0X01

#define PREV_SONG 0X02

#define CMD_PLAY_W_INDEX 0X03 //DATA IS REQUIRED (number of song)

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#define VOLUME_UP_ONE 0X04

#define VOLUME_DOWN_ONE 0X05

#define CMD_SET_VOLUME 0X06//DATA IS REQUIRED (number of volume from 0 up to30(0x1E))

#define SET_DAC 0X17

#define CMD_PLAY_WITHVOLUME 0X22 //data is needed 0x7E 06 22 00 xx yy EF;(xx volume)(yy number of song)

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#define CMD_SEL_DEV 0X09 //SELECT STORAGE DEVICE, DATA IS REQUIRED

                #define DEV_TF 0X02 //HELLO,IM THE DATAREQUIRED

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#define SLEEP_MODE_START 0X0A

#define SLEEP_MODE_WAKEUP 0X0B

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#define CMD_RESET 0X0C//CHIP RESET

#define CMD_PLAY 0X0D //RESUME PLAYBACK

#define CMD_PAUSE 0X0E //PLAYBACK IS PAUSED

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#define CMD_PLAY_WITHFOLDER 0X0F//DATA IS NEEDED, 0x7E 06 0F 00 01 02 EF;(play the songwith the directory \01\002xxxxxx.mp3

#define STOP_PLAY 0X16

#define PLAY_FOLDER 0X17// data is needed 0x7E 06 17 00 01 XX EF;(play the 01folder)(value xx we dont care)

#define SET_CYCLEPLAY 0X19//data is needed 00 start; 01 close

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#define SET_DAC 0X17//data is needed 00 start DAC OUTPUT;01 DAC no output

////////////////////////////////////////////////////////////////////////////////////

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void setup()

{

  Serial.begin(9600);//Start our Serial coms for serial monitor in our pc

mySerial.begin(9600);//Start our Serial coms for THE MP3

delay(500);//Wait chip initialization is complete

   sendCommand(CMD_SEL_DEV, DEV_TF);//select the TF card

delay(200);//wait for 200ms

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}

void loop()

{

sendCommand(CMD_PLAY_WITHVOLUME, 0X0F01);//play the first song with volume 15 class

delay(1000000);//the programm will send the play optioneach 100 seconds to the catalex chip

}

void sendCommand(int8_t command, int16_t dat)

{

delay(20);

Send_buf[0] = 0x7e; //starting byte

Send_buf[1] = 0xff; //version

Send_buf[2] = 0x06; //the number of bytes of the command without startingbyte and ending byte

Send_buf[3] = command; //

Send_buf[4] = 0x00;//0x00 = no feedback, 0x01 = feedback

Send_buf[5] = (int8_t)(dat >> 8);//datah

Send_buf[6] = (int8_t)(dat); //datal

Send_buf[7] = 0xef; //ending byte

for(uint8_t i=0; i<8; i++)//

{

   mySerial.write(Send_buf) ;//send bit to serial mp3

   Serial.print(Send_buf,HEX);//send bit to serial monitor in pc

}

Serial.println();

}

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