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

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//
Revision 0:1dd4081a2bb9, committed 2017-03-30
- Comitter:
- javakys
- Date:
- Thu Mar 30 06:15:13 2017 +0000
- Child:
- 1:fc4e0c572992
- Commit message:
- first commit;
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Mar 30 06:15:13 2017 +0000
@@ -0,0 +1,253 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "SDFileSystem.h"
+#include <stdio.h>
+#include <string.h>
+
+#include "FTPClient.h"
+#include "VS1002.h"
+#include "SSD1306.h"
+
+#define MAC "\x00\x08\xDC\x11\x34\x78"
+#define IP "192.168.0.20"
+#define MASK "255.255.255.0"
+#define GATEWAY "192.168.0.1"
+
+#define FTP_SERVER_IP "192.168.0.10"
+
+#define _MAX_FNAME_LEN_ 127
+#define _FTP_UPDATE_TIME_ 10
+
+
+Serial uart(USBTX, USBRX);
+AnalogIn ain(A5);
+//SDFileSystem sd(p5, p6, p7, p8, "sd"); // LPC1768 MBD2PMD
+//SDFileSystem sd(P0_18, P0_17, P0_15, P0_16, "sd"); // Seeeduino Arch Pro SPI2SD
+//SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // K64F
+//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_FW(D4); // Foward Key
+InterruptIn K_BW(D6); // Backward Key
+InterruptIn K_ONOFF(D5); //Play / 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
+
+//Ticker ledTick;
+
+/* Global Variables to store Status*/
+int new_song_number=2; //Variable to store the Song Number
+int volume_set=-20; //Variable to store the Volume
+int previous_volume; //Variable to store the volume when muted
+bool pause=false; //Variable to store the status of Pause button
+bool mute=false; //Variable to store the status of mute button
+
+int check=0; //Capacitative touch generates interrupt on both press and release. This variable tracks this and updates only on press.
+//char *song_name[9]={"Good Day","Leong","Sponsor","I'm So Sexy","My Life","Oh My god","Wonderful bar","Whale Hunting","Love"}; //Array of song names entered manually
+
+uint32_t ftp_time_1s = 0;
+
+char myfilelist[MAX_SS] = {0,};
+
+/*void ledTickfunc()
+{
+ if(ftp_time_1s)
+ {
+ //printf("enter ftp_time_1s:%d\r\n", ftp_time_1s);
+ if(ftp_time_1s++ > _FTP_UPDATE_TIME_) ftp_time_1s = 0;
+ }
+}*/
+void Volume_Up()
+{
+ volume_set+=3; // Volume Up
+ if(volume_set>=0)
+ volume_set=0;
+}
+
+void Volume_Down()
+{
+ volume_set-=3; //Volume Down
+ if(volume_set<-55)
+ volume_set=-55;
+}
+
+void Song_Forward()
+{
+ new_song_number += 1;
+ if(new_song_number == 10)
+ new_song_number = 1;
+}
+
+void Song_Backward()
+{
+ if(new_song_number == 1)
+ new_song_number = 9;
+ else
+ new_song_number -= 1;
+}
+
+void Play_Pressed()
+{
+ pause = !pause;
+}
+
+int main (void)
+{
+ *(volatile uint32_t *)(0x41001014) = 0x0060100;
+// *(volatile uint32_t *)(0x41003000) = 0x10; //D6
+// *(volatile uint32_t *)(0x41003004) = 0x10; //D5
+// *(volatile uint32_t *)(0x41003008) = 0x10; //D4
+// *(volatile uint32_t *)(0x41003080) = 0x10; //D3
+// *(volatile uint32_t *)(0x41003098) = 0x10; //D7
+
+ unsigned int update_count_s=6;
+ unsigned int update_count_ms=0;
+ unsigned int ain_temp=0;
+ //char* my_text = "GIF2015";
+ /*char* tok = NULL;
+ char* lasts = NULL;
+ char filename[_MAX_FNAME_LEN_];
+ FILE* fp;*/
+
+ init();
+ cls();
+ //OLED_DrawBMP(0,0,128,8,(unsigned char *)GIF2015);
+ //OLED_ShowStr(0,0,my_text,2);
+// OLED_DrawBMP(0,0,128,8,(unsigned char *)wiznet);
+ //LED_P23x32Str(0, 0, my_text);
+// Serial Interface eth;
+ uart.baud(115200);
+ uart.printf("Initializing\r\n");
+
+// EthernetInterface eth;
+ uart.printf("Initializing Ethernet\r\n");
+
+ //eth.init(); //Use DHCP
+ eth.init((uint8_t*)MAC,IP,MASK,GATEWAY); //IP,mask,Gateway
+ uart.printf("Connecting\r\n");
+ eth.connect();
+ uart.printf("IP Address is %s\r\n", eth.getIPAddress());
+
+// Check File System
+ uart.printf("Checking File System\r\n");
+ DIR *d = opendir("/sdc/");
+ if (d != NULL) {
+ uart.printf("SD Card Present\r\n");
+ closedir(d);
+ } else {
+ 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;
+
+
+ //ledTick.attach(&ledTickfunc,2);
+ /* UI Button setup */
+ K_VU.fall(&Volume_Up);
+// K_VU.mode(PullUp);
+ K_VD.fall(&Volume_Down);
+// K_VD.mode(PullUp);
+ K_ONOFF.fall(&Play_Pressed);
+ // K_ONOFF.mode(PullUp);
+ K_FW.fall(&Song_Forward);
+ // K_FW.mode(PullUp);
+ 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)
+ {
+/*
+ update_count_ms++;
+ if(update_count_ms>5000)
+ {
+ printf("update_count_ms count : %d\r\n", update_count_s);
+ update_count_ms=0;
+ update_count_s++;
+ }
+ //printf("ftp_time_1s:%d\r\n", ftp_time_1s);
+ //if(ftp_time_1s == 0)
+ if(update_count_s>=5)
+ {
+ //Configure the display driver
+ update_count_s = 0;
+
+ printf(" UPDATING MP3\r\n");
+ printf("==================\n\r\n");
+
+ if(myFTP.open("192.168.0.10", 21, "user", "pass"))
+ {
+ printf("Connect Success to FTPServer\r\n");
+ printf("Connected to FTP Server\r\n");
+
+ myFTP.getfile("1.mp3");
+ myFTP.getfile("2.mp3");
+ myFTP.getfile("3.mp3");
+
+ printf("\n UPDATE DONE\n\r\n");
+ myFTP.quit();
+ }
+ else
+ {
+ printf(" Can't connect to FTP Server\r\n");
+ printf(" UPDATE FAIL\r\n");
+ }
+ printf("==================\n");
+ }
+*/
+
+ /*============================================================
+ * MP3 Initialising
+ *==========================================================*/
+
+ mp3._RST = 1;
+ mp3.cs_high(); //chip disabled
+ mp3.sci_initialise(); //initialise MBED
+ mp3.sci_write(0x00,(SM_SDINEW+SM_STREAM+SM_DIFF));
+ mp3.sci_write(0x03, 0x9800);
+ mp3.sdi_initialise();
+
+ ain_temp = ain.read_u16();
+ //printf("normalized: %d \n\r", ain_temp);
+
+// if (pause)
+// {
+ printf("enter song\r\n");
+ printf("song number: %d\r\n", new_song_number);
+ mp3.play_song(new_song_number);
+// }
+ }
+}