Kazushi Mukaiyama / AkitaSM
Last commit 29 Oct 2010

Description: This library for Akita Sound module. very personal.

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AkitaSM.cpp

00001 /**
00002  * ...
00003  * @author Kazushi Mukaiyama
00004  */
00005  
00006 #include "AkitaSM.h"
00007 #include "mbed.h"
00008 
00009 #define AKITA_AICTRL0   0x0C // Current song number / Song change
00010 #define AKITA_AICTRL1   0x0D // Number of songs on MMC
00011 #define AKITA_AICTRL2   0x0E // Number of songs on MMC (VS1103b)
00012 #define AKITA_AICTRL3   0x0F // Play mode
00013 
00014 AkitaSM::AkitaSM(int addr, PinName sda, PinName scl)
00015     : _i2c(sda, scl) {
00016     
00017     _addr = addr<<1;
00018 
00019     // Set up the i2c interface
00020     //_i2c.frequency(1000000);
00021 }
00022 
00023 void AkitaSM::play(int index, bool loop)
00024 {
00025     char p = 0;
00026     if(loop) p = 1; else p = 3;
00027     _cmd[0] = AKITA_AICTRL3;
00028     _cmd[1] = 0;
00029     _cmd[2] = p << 1;
00030     _i2c.write(_addr, _cmd, 3);
00031     wait(0.01);
00032     int n = 0x8000 + index;
00033     _cmd[0] = AKITA_AICTRL0;
00034     _cmd[1] = (n >> 8) & 0xFF;
00035     _cmd[2] = n & 0xFF;
00036     _i2c.write(_addr, _cmd, 3);
00037     //_cmd[0] = index & 0xFF;
00038     //_i2c.write(_addr, _cmd, 1);
00039 }
00040 
00041 void AkitaSM::stop()
00042 {
00043     _cmd[0] = AKITA_AICTRL3;
00044     _cmd[1] = 0;
00045     _cmd[2] = 1<<4;
00046     _i2c.write(_addr, _cmd, 3);
00047 }
00048 
00049 void AkitaSM::control(char r, int cmd)
00050 {
00051     //r is resistor 0x00-0x0f
00052     _cmd[0] = r;
00053     _cmd[1] = (cmd >> 8) & 0xFF;
00054     _cmd[2] = cmd & 0xFF;
00055     _i2c.write(_addr, _cmd, 3);
00056 }
00057 
00058 char* AkitaSM::isPlaying()
00059 {
00060     //_i2c.read(_addr, _cmd, 4);
00061     _i2c.read(_addr, _cmd, 4);
00062     return _cmd;
00063 }