WIZnet / Mbed 2 deprecated MP3Decoding_VS1002_WIZwiki-W7500

Playing MP3 with Music Shield and WIZwiki-W7500

Dependencies:   FTPClient javakysSDFileSystem2 WIZnetInterface mbed

Prerequisite

This example is for playing MP3 file stored in SD card on WIZwiki-W7500 and updating MP3 files from server to SD card via FTP protocol.

To implement this function, you need a Platform board, network Interface board, MP3 decoder board and SD card. Below are what we used.

  • WIZwiki-W7500 from WIZnet (Platform board and Ethernet I/F board)
  • Music shield from Seeed Studio
  • SD card

Hardware Configuration

WIZwiki-W7500 Pin map

pin map

SPI1 for SD Card
SPI1 on WIZwiki-W7100 is for reading from or writing to SD card and pins for SPI1 are PB_0, PB_1, PB_2 and PB_3.

SPI0 and other control pins for MP3 decoder
WIZwiki-W7500 communicates to MP3 decoder on Music Shield via SPI0 pins of which consists of PC_12, D11, D12 and D13. And PC_13, PC_14 and PC-15 are used for DCS, DREQ and RST, respectively.

InterruptIn pins for 5-Way Navigation Switch
D3, D4, D5, D6 and D7 are connected to 5 way navigation switch on Music Shield. When user pushes the switch to one way, a relevant pin is grounded so that he or she should make it set high at the beginning.

Software

SPI Initialization

//Declaration in VS1002.cpp
VS1002::VS1002(PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name, PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst, PinName dreq, PinName dcs)
    : _DREQ(dreq), _RST(rst), _spi(mosi, miso, sck), _CS(cs), _DCS(dcs), _sd(mmosi, mmiso, ssck, ccs, name) {
    
    }    

//Initialization in main.cpp
VS1002 mp3(PB_3, PB_2, PB_1, PB_0,"sdc",D11, D12 ,D13, PC_12, PC_15, PC_14, PC_13);

Mapping 5-Way Navigation Switch into InterruptIn pins

main.cpp

InterruptIn K_VU(D3); // Volume UP Key
InterruptIn K_VD(D7); // Volume Down Key
InterruptIn K_FW(D4); // Foward Key
InterruptIn K_BW(D6); // Backward Key
InterruptIn K_ONOFF(D5); //Play/Resume or Pause Key

Additional codes due to mbed library bug of WIZwiki-W7500

main.cpp

//Operating Clock Frequency Set
*(volatile uint32_t *)(0x41001014) = 0x0060100;

//Set all InterruptIn pins to Internal PullUp
*(volatile uint32_t *)(0x41003000) = 0x00000002; //D6
*(volatile uint32_t *)(0x41003004) = 0x00000002; //D5
*(volatile uint32_t *)(0x41003008) = 0x00000002;  //D4
*(volatile uint32_t *)(0x41003080) = 0x00000002;  //D3
*(volatile uint32_t *)(0x41003098) = 0x00000002;  //D7

Caution

This example can play only MP3 files with up to 192KHz sample rate//

VS1002.h@2:cea9f6564641, 2017-03-30 (annotated)

Committer:
javakys
Date:
Thu Mar 30 10:29:51 2017 +0000
Revision:
2:cea9f6564641
Parent:
1:fc4e0c572992 
Function Description Update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
javakys 1:fc4e0c572992 1 #ifndef VS1002_H
javakys 1:fc4e0c572992 2 #define VS1002_H
javakys 1:fc4e0c572992 3
javakys 1:fc4e0c572992 4 #include "mbed.h"
javakys 1:fc4e0c572992 5 #include "SDFileSystem.h"
javakys 1:fc4e0c572992 6 #include "string"
javakys 1:fc4e0c572992 7 #include "string.h"
javakys 1:fc4e0c572992 8
javakys 1:fc4e0c572992 9
javakys 1:fc4e0c572992 10 //SCI_MODE register bits as of p.26 of the datasheet
javakys 1:fc4e0c572992 11 #define SM_DIFF 0x0001
javakys 1:fc4e0c572992 12 #define SM_SETTOZERO 0x0002
javakys 1:fc4e0c572992 13 #define SM_RESET 0x0004
javakys 1:fc4e0c572992 14 #define SM_OUTOFWAV 0x0008
javakys 1:fc4e0c572992 15 #define SM_PDOWN 0x0010
javakys 1:fc4e0c572992 16 #define SM_TESTS 0x0020
javakys 1:fc4e0c572992 17 #define SM_STREAM 0x0040
javakys 1:fc4e0c572992 18 #define SM_PLUSV 0x0080
javakys 1:fc4e0c572992 19 #define SM_DACT 0x0100
javakys 1:fc4e0c572992 20 #define SM_SDIORD 0x0200
javakys 1:fc4e0c572992 21 #define SM_SDISHARE 0x0400
javakys 1:fc4e0c572992 22 #define SM_SDINEW 0x0800
javakys 1:fc4e0c572992 23 #define SM_ADPCM 0x1000
javakys 1:fc4e0c572992 24 #define SM_ADPCM_HP 0x2000
javakys 1:fc4e0c572992 25
javakys 1:fc4e0c572992 26 extern int new_song_number;
javakys 1:fc4e0c572992 27 extern int volume_set;
javakys 1:fc4e0c572992 28 extern bool pause;
javakys 1:fc4e0c572992 29 extern bool mute;
javakys 1:fc4e0c572992 30 extern char * song_name[9];
javakys 1:fc4e0c572992 31
javakys 1:fc4e0c572992 32
javakys 1:fc4e0c572992 33 class VS1002 {
javakys 1:fc4e0c572992 34
javakys 1:fc4e0c572992 35 public:
javakys 1:fc4e0c572992 36
javakys 1:fc4e0c572992 37 VS1002(PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name, PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst, PinName dreq, PinName dcs);
javakys 1:fc4e0c572992 38
javakys 1:fc4e0c572992 39 void cs_low(void);
javakys 1:fc4e0c572992 40 void cs_high(void);
javakys 1:fc4e0c572992 41 void dcs_low(void);
javakys 1:fc4e0c572992 42 void dcs_high(void);
javakys 1:fc4e0c572992 43 void sci_en(void);
javakys 1:fc4e0c572992 44 void sci_dis(void);
javakys 1:fc4e0c572992 45 void sdi_en(void);
javakys 1:fc4e0c572992 46 void sdi_dis(void);
javakys 1:fc4e0c572992 47
javakys 1:fc4e0c572992 48 void sci_initialise(void);
javakys 1:fc4e0c572992 49 void sdi_initialise(void);
javakys 1:fc4e0c572992 50 void reset(void);
javakys 1:fc4e0c572992 51 void power_down(void);
javakys 1:fc4e0c572992 52
javakys 1:fc4e0c572992 53 void sci_write(unsigned char, unsigned short int);
javakys 1:fc4e0c572992 54 void sdi_write(unsigned char);
javakys 1:fc4e0c572992 55 unsigned short int read(unsigned short int);
javakys 1:fc4e0c572992 56 void sine_test_activate(unsigned char);
javakys 1:fc4e0c572992 57 void volume(signed int,signed int);
javakys 1:fc4e0c572992 58 void sine_test_deactivate(void);
javakys 1:fc4e0c572992 59 void play_song(int);
javakys 1:fc4e0c572992 60
javakys 1:fc4e0c572992 61 int num_of_files;
javakys 1:fc4e0c572992 62
javakys 1:fc4e0c572992 63 DigitalIn _DREQ;
javakys 1:fc4e0c572992 64 DigitalOut _RST;
javakys 1:fc4e0c572992 65
javakys 1:fc4e0c572992 66 protected:
javakys 1:fc4e0c572992 67
javakys 1:fc4e0c572992 68 SPI _spi;
javakys 1:fc4e0c572992 69 DigitalOut _CS;
javakys 1:fc4e0c572992 70 DigitalOut _DCS;
javakys 1:fc4e0c572992 71 SDFileSystem _sd;
javakys 1:fc4e0c572992 72
javakys 1:fc4e0c572992 73 };
javakys 1:fc4e0c572992 74 #endif