Hi there,
Background of the project :
I'm working on a project where I alternately switch from playing audio to recording audio with the Adafruit VS0153 breakout board. I had a program working fine using an arduino UNO, in exception of the loading time of the plugin made for the the audio recording (I managed to reduce the loading time by half by modifiing the library, but it was still too long). Therefore i swiched to a Teensy LC i had laying around, hoping the 32 bits capacity would make this loading time faster.
Problem :
After adapting the program for the teensy LC (basicaly just changing the pins and the source library), nothing really worked anymore. Main thing beeing the audio started to play and stopped right away.
Investigations on my side :
- The Player simple exemple works great
- When diging in the library I notice that in the feedbuffer() function, the "while (readyForData()) " get called repetedly for from 2 to 32 time when used in the Player simple exemple, and only once for approx 150 times when used in my exemple. (see picture)
- as soon as I add the musicPlayer.begin() function in the main loop in the player simple I get the same symptoms as in my own program (even if I put an if condition to make sure that the musicPlayer.begin() will only be called if the musicPlayer wasn't already done)
Question :
As I need to alternate between recording and playing, (and therefore having to re-redo a musicPlayer.begin() when I'm swiching from one to an other). Is there a way I could make the teensy accept the musicPlayer.begin() function in the main loop ?
Thanks in advance,
Background of the project :
I'm working on a project where I alternately switch from playing audio to recording audio with the Adafruit VS0153 breakout board. I had a program working fine using an arduino UNO, in exception of the loading time of the plugin made for the the audio recording (I managed to reduce the loading time by half by modifiing the library, but it was still too long). Therefore i swiched to a Teensy LC i had laying around, hoping the 32 bits capacity would make this loading time faster.
Problem :
After adapting the program for the teensy LC (basicaly just changing the pins and the source library), nothing really worked anymore. Main thing beeing the audio started to play and stopped right away.
Investigations on my side :
- The Player simple exemple works great
- When diging in the library I notice that in the feedbuffer() function, the "while (readyForData()) " get called repetedly for from 2 to 32 time when used in the Player simple exemple, and only once for approx 150 times when used in my exemple. (see picture)
- as soon as I add the musicPlayer.begin() function in the main loop in the player simple I get the same symptoms as in my own program (even if I put an if condition to make sure that the musicPlayer.begin() will only be called if the musicPlayer wasn't already done)
Question :
As I need to alternate between recording and playing, (and therefore having to re-redo a musicPlayer.begin() when I'm swiching from one to an other). Is there a way I could make the teensy accept the musicPlayer.begin() function in the main loop ?
Thanks in advance,
Code:
// include SPI, MP3 and SD libraries
#include <SPI.h>
#include <Adafruit_VS1053.h>
#include <SD.h>
#define Decrocheur A0
// These are the pins used for the breakout example
#define BREAKOUT_RESET 9 // VS1053 reset pin (output)
#define BREAKOUT_CS 10 // VS1053 chip select pin (output)
#define BREAKOUT_DCS 8 // VS1053 Data/command select pin (output)
#define CARDCS 7 // Card chip select pin
#define DREQ 3 // VS1053 Data request, ideally an Interrupt pin
Adafruit_VS1053_FilePlayer musicPlayer =
Adafruit_VS1053_FilePlayer(BREAKOUT_RESET, BREAKOUT_CS, BREAKOUT_DCS, DREQ, CARDCS);
bool initialized_audio = 0;
void setup() {
Serial.begin(9600);
// init des pins en lecture
pinMode (Decrocheur, INPUT_PULLUP);
pinMode (Composition_en_cours, INPUT_PULLUP);
pinMode (Valeur_compo, INPUT);
// initialise the music player
if (! musicPlayer.begin()) { // initialise the music player
Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));
while (1);
}
bool initialized_audio = 1;
Serial.println(F("VS1053 found"));
//musicPlayer.sineTest(0x44, 500); // Make a tone to indicate VS1053 is working
if (!SD.begin(CARDCS)) {
Serial.println(F("SD failed, or not present"));
while (1); // don't do anything more
}
Serial.println("SD OK!");
// list files
printDirectory(SD.open("/"), 0);
// Set volume for left, right channels. lower numbers == louder volume!
musicPlayer.setVolume(20, 20);
/***** Two interrupt options! *******/
// This option uses timer0, this means timer1 & t2 are not required
// (so you can use 'em for Servos, etc) BUT millis() can lose time
// since we're hitchhiking on top of the millis() tracker
//musicPlayer.useInterrupt(VS1053_FILEPLAYER_TIMER0_INT);
// This option uses a pin interrupt. No timers required! But DREQ
// must be on an interrupt pin. For Uno/Duemilanove/Diecimilla
// that's Digital #2 or #3
// See http://arduino.cc/en/Reference/attachInterrupt for other pins
// *** This method is preferred
if (! musicPlayer.useInterrupt(VS1053_FILEPLAYER_PIN_INT))
Serial.println(F("DREQ pin is not an interrupt pin"));
}
void loop() {
// Start playing a file, then we can do stuff while waiting for it to finish
if (initialized_audio == 0){
initialized_audio =1;
/* if (! musicPlayer.begin()) { // initialise the music player -> don't work when placed here, even if the programm don't go through the loop
Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));
while (1);
} */
Serial.println(F("hi there ?"));
delay(500); // Make the that the play function doesn't start to quickly after
}
if (! musicPlayer.startPlayingFile("track001.mp3")) {
Serial.println("Could not open file track001.mp3");
while (1);
}
Serial.println(F("Started playing"));
while (musicPlayer.playingMusic) {
if (digitalRead(Decrocheur) == HIGH) {
musicPlayer.stopPlaying();
}
}
Serial.println("Done playing music");
}
/// File listing helper
void printDirectory(File dir, int numTabs) {
while (true) {
File entry = dir.openNextFile();
if (! entry) {
// no more files
//Serial.println("**nomorefiles**");
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();
}
}
Last edited:
