Hi all 
As mentioned above in Topic headline I want to make any of the arduino pin as an output for indicator telling the play or stop status of a song in SD Card module.
This indicator will glow when a random song starts playing and it will get turn off automatically as the song stops . . . . It Will be an automatic function depending on playing length of song which the system detect of its own . . Please help me in designing this script. Thanks !!!!!!
Your topic was MOVED to its current forum category which is more appropriate than the original
ohhkkk sir
thanks al lot
Please help me in solving the above issue !!
How is the song being played from the sd card?
Are you using a dfmini to decode it?
The df player has a busy pin, it low when the module is playing and high when not playing. You can poll the busy pin and change an LED pin accordingly.
By using this type of code for simple audio player
/*
* Play wave audio files with Arduino.
* This is a free software with NO WARRANTY.
* https://simple-circuit.com/
*/
#include <SPI.h> // include Arduino SPI library
#include <SD.h> // include Arduino SD library
#include "TMRpcm.h" // include TMRpcm library
#define next 2
#define _pause 3
TMRpcm audio;
File root;
void setup(void) {
Serial.begin(9600);
pinMode(next, INPUT_PULLUP);
pinMode(_pause, INPUT_PULLUP);
Serial.print("Initializing SD card...");
if (!SD.begin()) {
Serial.println("failed!");
while(true); // stay here.
}
Serial.println("OK!");
audio.speakerPin = 9; // set speaker output to pin 9
root = SD.open("/"); // open SD card main root
printDirectory(root, 0); // print all files names and sizes
audio.setVolume(5); // 0 to 7. Set volume level
audio.quality(1); // Set 1 for 2x oversampling Set 0 for normal
}
// main loop
void loop() {
if ( !audio.isPlaying() ) {
// no audio file is playing
File entry = root.openNextFile(); // open next file
if (! entry) {
// no more files
root.rewindDirectory(); // go to start of the folder
return;
}
uint8_t nameSize = String(entry.name()).length(); // get file name size
String str1 = String(entry.name()).substring( nameSize - 4 ); // save the last 4 characters (file extension)
if ( str1.equalsIgnoreCase(".wav") ) {
// the opened file has '.wav' extension
audio.play( entry.name() ); // play the audio file
Serial.print("Playing file: ");
Serial.println( entry.name() );
}
else {
// not '.wav' format file
entry.close();
return;
}
while( debounce(next) ) ; // wait until 'next' button is released
}
if ( !digitalRead(next) ) {
// 'next' button is pressed
audio.stopPlayback(); // stop playing
return;
}
if ( !digitalRead(_pause) ) {
// '_pause' button is pressed
audio.pause(); // pauses/unpauses playback
while( debounce(_pause) ) ; // wait until '_pause' button is released
}
}
// a small function for buttons debounce
bool debounce (int bt)
{
byte count = 0;
for(byte i = 0; i < 5; i++)
{
if ( !digitalRead(bt) )
count++;
delay(10);
}
if(count > 2) return 1;
else return 0;
}
void printDirectory(File dir, int numTabs) {
while (true) {
File entry = dir.openNextFile();
if (! entry) {
// no more files
break;
}
for (uint8_t i = 0; i < numTabs; i++) {
Serial.print('\t');
}
Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs + 1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
Serial.println(entry.size(), DEC);
}
entry.close();
}
}
// end of code.
and with this module
Ya for a DF Player I have heard about it but this time I need only and only for SD Card Module and the related scripting above
That one is V.V.IMP Sir
Please Help !!!
Thanks
This function is the key to your LED status. If it's false and the LED is on, turn it off. If it's true and the LED is off, turn it on.
With Function You mean the Playing of a particular song ??
Ya sir all working fine
But when I used to add some trigger input for songs to play I too added some related output pins for LED Light indicators and applied the code like this
if (tmrpcm.isPlaying() && digitalRead(2))
{
digitalWrite(IndiLiteA,1);
}
else
{
digitalWrite(IndiLiteA,0);
}
if (tmrpcm.isPlaying() && digitalRead(3))
{
digitalWrite(IndiLiteB,1);
}
else
{
digitalWrite(IndiLiteB,0);
}
But here when i use to press Input 2 , the indicator 3, I mean IndiLiteB glows 
in place of IndiLiteA . ..
Why So and how to solve ??
Please Help !!!!!!
No Sir I am not able to design a proper function of output for every individual input
Please please Help me out !!
Find where you play the song.
Try turning on the LED on the line before you play it and turning it off on the line after you play it.
Ya sir let me try !!