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//

Files at this revision

API Documentation at this revision

Revision 2:cea9f6564641, committed 2017-03-30

Comitter:
javakys
Date:
Thu Mar 30 10:29:51 2017 +0000
Parent:
1:fc4e0c572992
Commit message:
Function Description Update

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r fc4e0c572992 -r cea9f6564641 main.cpp
--- a/main.cpp	Thu Mar 30 06:29:49 2017 +0000
+++ b/main.cpp	Thu Mar 30 10:29:51 2017 +0000
@@ -27,11 +27,11 @@
 //SDFileSystem sd(PB_3, PB_2, PB_1, PB_0, "sd"); // WIZwiki-W7500 
 
 EthernetInterface eth;
-InterruptIn K_VU(D3); // Create the interrupt receiver object on pin 26
-InterruptIn K_VD(D7); // Create the interrupt receiver object on pin 26
+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 / Pause Key
+InterruptIn K_ONOFF(D5); //Play/Resume or Pause Key
 VS1002 mp3(PB_3, PB_2, PB_1, PB_0,"sdc",D11, D12 ,D13, PC_12, PC_15, PC_14, PC_13);  //Setup Audio decoder. Name is VS1002 even though VS1053 is used.
 
 FTPClient myFTP("/sdc");  // mountname in MySeeedStudioTFTv2
@@ -60,13 +60,22 @@
         if(ftp_time_1s++ > _FTP_UPDATE_TIME_) ftp_time_1s = 0;
     }
 }*/
+
+/** Volume UP
+ *
+ * @param 
+ */
 void Volume_Up() 
 {
     volume_set+=3; // Volume Up
     if(volume_set>=0)
         volume_set=0;
 }
- 
+
+/** Volume Down
+ *
+ * @param 
+ */ 
 void Volume_Down() 
 {
     volume_set-=3;  //Volume Down
@@ -74,6 +83,10 @@
         volume_set=-55;
 }
 
+/** Song_Forward
+ *
+ * @param 
+ */ 
 void Song_Forward()
 {
     new_song_number += 1;
@@ -81,6 +94,10 @@
         new_song_number = 1;
 }
 
+/** Song_Backward
+ *
+ * @param 
+ */ 
 void Song_Backward()
 {
     if(new_song_number == 1)
@@ -89,6 +106,10 @@
         new_song_number -= 1;
 }
 
+/** Play_Pressed
+ *
+ * @param 
+ */ 
 void Play_Pressed()
 {
     pause = !pause;
@@ -141,27 +162,11 @@
         uart.printf("SD Card Root Directory Not Found\r\n");
     }
 
-    uint32_t tmp;
-    tmp = *(volatile uint32_t *)(0x41003000); //D6
-    uart.printf("Before set, D6 : %08X\r\n", tmp);
-    tmp = 0x00000002;
-    *(volatile uint32_t *)(0x41003000) = tmp; 
-    tmp = *(volatile uint32_t *)(0x41003004); //D5
-    uart.printf("Before set, D5 : %08X\r\n", tmp);
-    tmp = 0x00000002;
-    *(volatile uint32_t *)(0x41003004) = tmp; 
-    tmp = *(volatile uint32_t *)(0x41003008); //D4
-    uart.printf("Before set, D4 : %08X\r\n", tmp);
-    tmp = 0x00000002;
-    *(volatile uint32_t *)(0x41003008) = tmp; 
-    tmp = *(volatile uint32_t *)(0x41003080); //D3
-    uart.printf("Before set, D3 : %08X\r\n", tmp);
-    tmp = 0x00000002;
-    *(volatile uint32_t *)(0x41003080) = tmp; 
-    tmp = *(volatile uint32_t *)(0x41003098); //D7
-    uart.printf("Before set, D5 : %08X\r\n", tmp);
-    tmp = 0x00000002;
-    *(volatile uint32_t *)(0x41003098) = tmp; 
+    *(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
 
    
     //ledTick.attach(&ledTickfunc,2);
@@ -177,16 +182,6 @@
     K_BW.fall(&Song_Backward);
  //   K_BW.mode(PullUp);
     
-    tmp = *(volatile uint32_t *)(0x41003000); //D6
-    uart.printf("After set, D6 : %08X\r\n", tmp);
-    tmp = *(volatile uint32_t *)(0x41003004); //D5
-    uart.printf("After set, D5 : %08X\r\n", tmp);
-    tmp = *(volatile uint32_t *)(0x41003008); //D4
-    uart.printf("After set, D4 : %08X\r\n", tmp);
-    tmp = *(volatile uint32_t *)(0x41003080); //D3
-    uart.printf("After set, D3 : %08X\r\n", tmp);
-    tmp = *(volatile uint32_t *)(0x41003098); //D7
-    uart.printf("After set, D5 : %08X\r\n", tmp);
    
     while(1)
     {