add mp3 player code

Code/MP3Player/i2ckbd.cpp

@@ -0,0 +1,41 @@
+#include "i2ckbd.h"
+
+i2c_kbd::i2c_kbd()
+        :_master(I2C_KBD_MOD,I2C_KBD_SDA, I2C_KBD_SCL,0),
+        c(0),
+        _stat(0){
+    _master.setSpeed(I2C_KBD_SPEED);//also inited
+}
+
+i2c_kbd::~i2c_kbd() {
+
+}
+
+int i2c_kbd::write_i2c_kbd() {
+    unsigned char msg[2];
+    msg[0] = 0x09;
+    _master.i2cWrite(I2C_KBD_ADDR,msg,1);
+    return 0;
+}
+
+int i2c_kbd::read_i2c_kbd() {
+    uint16_t buff = 0;
+
+    _master.i2cRead(I2C_KBD_ADDR,(uint8_t*)&buff,2);
+
+    if(buff!=0) {
+        return buff;
+    }
+    return -1;
+}
+
+int i2c_kbd::I2C_Send_RegData(int i2caddr, int reg, char command) {
+    int retval;
+    unsigned char I2C_Send_Buffer[2];
+    I2C_Send_Buffer[0]=reg;
+    I2C_Send_Buffer[1]=command;
+    uint8_t I2C_Sendlen=2;
+
+    retval = _master.i2cWrite(i2caddr,I2C_Send_Buffer,I2C_Sendlen);
+    return retval;
+}