I am having trouble having my Arduino Mega 2560 read text files from the SD Shield. My SD Shield is functional on an Arduino Uno R3 Plus, however. I also installed the driver for the Mega and have tested it with non-SD card related programs and it works fine. Does the SD shield plug into the Mega differently? Am I using the wrong ports?
I chose to buy an Arduino Mega 2560 in order to use more ports simultaneously. I desire to have my Arduino play music by reading text files located on an SD card. The Uno only allowed me to play up to two files at once as only 2 ports could be used at once. So, that's why I bought the Mega 2560.
This is my code, BTW. It works on the Uno, but not the Mega.
#include <Metro.h>
#include <SD.h>
#include <String.h>
#include <Tone.h>
File root;//Used as the directory
const int arr[7][27] = {
{
26, 28, 29, 52, 55, 58, 104, 110, 117, 208, 220, 233, 415, 440, 466, 831, 880, 932, 1661, 1760, 1865, 3322, 3520, 3729, 0, 0, 0 }
,
{
29, 31, 33, 58, 62, 65, 117, 123, 131, 233, 247, 262, 466, 494, 523, 932, 988, 1047, 1865, 1976, 2093, 3729, 3951, 4186, 0, 0, 0 }
,
{
0, 16, 17, 31, 33, 35, 62, 65, 69, 123, 131, 139, 247, 262, 277, 494, 523, 554, 988, 1047, 1109, 1976, 2093, 2217, 3951, 4186, 4435 }
,
{
17, 18, 19, 35, 37, 39, 69, 73, 78, 139, 147, 156, 277, 294, 311, 554, 587, 622, 1109, 1175, 1245, 2217, 2349, 2489, 4435, 4699, 4978 }
,
{
19, 21, 22, 39, 41, 44, 78, 82, 87, 156, 165, 175, 311, 330, 349, 622, 659, 698, 1245, 1319, 1397, 2489, 2637, 2794, 4978, 0, 0 }
,
{
21, 22, 23, 41, 44, 46, 82, 87, 93, 165, 175, 185, 330, 349, 370, 659, 698, 740, 1319, 1397, 1480, 2637, 2794, 2960, 0, 0, 0 }
,
{
23, 25, 26, 46, 49, 52, 93, 98, 104, 185, 196, 208, 370, 392, 415, 740, 784, 831, 1480, 1568, 1661, 2960, 3136, 3322, 0, 0, 0 }
};
//Rows are as follows: A B C D E F G
//Columns are 0F, 0N, 0S, 1F, 1N, 1S, etc.
void readFile(File f, int t, int numba);
int getTempo(File f, int i);
int translation(String s);
int tempo1 = 0, tempo2 = 0, tempo3 = 0, tempo4 = 0, tempo5 = 0;
double duration = 0;
int pitch = 0;
int pitch2 = 0;
int duration2 = 0;
Tone tone1;
Tone tone2;
Metro m1 = Metro(0);
Metro m2 = Metro(0);
void setup()
{
Serial.begin(9600);//Begins the serial at a rate of 9600 bauds.
pinMode(10, OUTPUT);//Sets port 10 as the output port.
SD.begin(10);//Used for SD cards and the like.
tone1.begin(8);//Needed to start the tone variable.
tone2.begin(9);
root = SD.open("/ALttP/"); // Just use "/" if you don't want to go to a specific folder....
File temp = root.openNextFile();//Starts it on the 1st file.
File temp2 = root.openNextFile();
//int i = 0;//Used for
if(temp)
Serial.println("File 1 works");
else
Serial.println("File 1 doesn't work");
if(temp2)
Serial.println("File 2 works");
else
Serial.println("File 2 doesn't work");
if(temp && temp2)
{
int seekPos = 0, seekPos2 = 0;
seekPos = getTempo(temp, 0);
seekPos2 = getTempo(temp2, 1);
// countFile(temp, i);
temp.seek(seekPos);
temp2.seek(seekPos2);
while(temp.available() || temp2.available())
{
if(m1.check() && temp.available())
{
readFile(temp, tempo1, 0);
tone1.play(pitch, duration);
m1.interval(duration);
m1.reset();
}
if(m2.check() && temp2.available())
{
readFile(temp2, tempo2, 1);
tone2.play(pitch2, duration2);
m2.interval(duration2);
m2.reset();
}
}
}
Serial.println("Completed");
}
void loop()
{
// Serial.println("Yay!");
}
/*void countFile(File f, int i)
{
int count = 0;
while(f.available())
{
char c = f.read();
if(c == ((char) 32))
{
count++;
}
}
count++;
if(i == 0)
{
limit1 = count/2;
}
else if(i == 1)
{
limit2 = count/2;
}
else if(i == 2)
{
limit3 = count/2;
}
else if(i == 3)
{
limit4 = count/2;
}
else if(i == 4)
{
limit5 = count/2;
}
}*/
void readFile(File f, int t, int numba)
{
int k = 0, iteration = 0;
// int song[500], duration[500];
String s = "";
while(f.available() && iteration < 2)
{
String s = "";
boolean b = true;
while(b && f.available())
{
char c = f.read();
if((c > '/' && c < ':') || (c > '@' && c < 'H') || (c > '`' && c < 'h') || c == 'r' || c == '.' && c != '\n')
{
s+= c;
}
else if(c == ' ')
{
b = false;
Serial.println(s);
}
}
if(s != NULL && s.length() >= 1)
{
if(iteration%2 == 0)
{
if(numba == 0)
pitch = translation(s);
else if(numba == 1)
pitch2 = translation(s);
}
else
{
char buf[s.length()+1];
s.toCharArray(buf,sizeof(buf));
double WVal=atof(buf);
double v = (((WVal)/4.0) * (245000.0/(t)));
Serial.println(v);
if(numba == 0)
duration = v;
else if(numba == 1)
duration2 = v;
k++;
}
iteration++;
}
}
}
int translation(String s)
{
int row = 0, column = 0, modifier = 0;
char a = s.charAt(0), b = s.charAt(1);
if('a' == tolower(a))
row = 0;
else if('b' == tolower(a))
row = 1;
else if('c' == tolower(a))
row = 2;
else if('d' == tolower(a))
row = 3;
else if('e' == tolower(a))
row = 4;
else if('f' == tolower(a))
row = 5;
else if('g' == tolower(a))
row = 6;
else
return 0;
if(s.length() == 2)
{
modifier = 1;
if('0' == b)
column = 0;
else if('1' == b)
column = 1;
else if('2' == b)
column = 2;
else if('3' == b)
column = 3;
else if('4' == b)
column = 4;
else if('5' == b)
column = 5;
else if('6' == b)
column = 6;
else if('7' == b)
column = 7;
else if('8' == b)
column = 8;
else
return 0;
}
else if(s.length() == 3)
{
char c = s.charAt(2);
if('f' == tolower(b))
modifier = 0;
else if('n' == tolower(b))
modifier = 1;
else if('s' == tolower(b))
modifier = 2;
else
return 0;
if('0' == c)
column = 0;
else if('1' == c)
column = 1;
else if('2' == c)
column = 2;
else if('3' == c)
column = 3;
else if('4' == c)
column = 4;
else if('5' == c)
column = 5;
else if('6' == c)
column = 6;
else if('7' == c)
column = 7;
else if('8' == c)
column = 8;
else
return 0;
}
else
return 0;
if(row > 6 || row < 0 || ((3*column) + modifier) > 26 || ((3*column) + modifier) < 0)
return 0;
return arr[row][(3*column) + modifier];
}
int getTempo(File f, int i)
{
String s = "";
char c;
boolean b = true;
while(f.available() && b)
{
char c = f.read();
if(c != ((char) 10) && c != ((char) 32))
{
s+= c;
}
else
b = false;
}
s.toLowerCase();
if(s.equals("tempo:"))
{
int t = f.position();
s = NULL;
b = true;
while(f.available() && b)
{
char c = f.read();
if(c != ((char) 10) && c != ((char) 32))
{
s+= c;
}
else
b = false;
}
int k = s.toInt();
switch(i)
{
case 0:
{
tempo1 = k;
break;
}
case 1:
{
tempo2 = k;
break;
}
case 2:
{
tempo3 = k;
break;
}
case 3:
{
tempo4 = k;
break;
}
case 4:
{
tempo5 = k;
break;
}
}
return f.position();
}
else
return 0;
}
