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// Simple WAV file player example
//
// Three types of output may be used, by configuring the code below.
//
// 1: Digital I2S - Normally used with the audio shield:
// http://www.pjrc.com/store/teensy3_audio.html
//
// 2: Digital S/PDIF - Connect pin 22 to a S/PDIF transmitter
// https://www.oshpark.com/shared_projects/KcDBKHta
//
// 3: Analog DAC - Connect the DAC pin to an amplified speaker
// http://www.pjrc.com/teensy/gui/?info=AudioOutputAnalog
//
// To configure the output type, first uncomment one of the three
// output objects. If not using the audio shield, comment out
// the sgtl5000_1 lines in setup(), so it does not wait forever
// trying to configure the SGTL5000 codec chip.
//
// The SD card may connect to different pins, depending on the
// hardware you are using. Uncomment or configure the SD card
// pins to match your hardware.
//
// Data files to put on your SD card can be downloaded here:
// http://www.pjrc.com/teensy/td_libs_AudioDataFiles.html
//
// This example code is in the public domain.
// Modified for use with USB mass storage drives 2020 Warren Watson
#include <USBHost_t36.h>
#include <Audio.h>
#include "play_usb_wav.h" // Should be included in 'Audio.h'
#include <Wire.h>
#include <SPI.h>
//#include <SD.h>
//#include <SerialFlash.h>
// Setup USBHost_t36 and as many HUB ports as needed.
USBHost myusb;
USBHub hub1(myusb);
// Setup MSC for the number of USB Drives you are using. (Two for this example)
// Mutiple USB drives can be used. Hot plugging is supported. There is a slight
// delay after a USB MSC device is plugged in. This is waiting for initialization
// but after it is initialized ther should be no delay.
USBDrive msDrive1(myusb);
USBFilesystem myFS(myusb);
AudioPlayUSBWav playWav1;
// Use one of these 3 output types: Digital I2S, Digital S/PDIF, or Analog DAC
AudioOutputI2S audioOutput;
//AudioOutputSPDIF audioOutput;
//AudioOutputAnalog audioOutput;
AudioConnection patchCord1(playWav1, 0, audioOutput, 0);
AudioConnection patchCord2(playWav1, 1, audioOutput, 1);
AudioControlSGTL5000 sgtl5000_1;
void setup() {
// Wait for USB Serial
while (!Serial) {
yield();
}
Serial.println("WaveFilePlayerUSB Started");
if (CrashReport) {
Serial.print(CrashReport);
Serial.println("Press any key to continue");
while (Serial.read() != -1)
;
while (Serial.read() == -1)
;
}
// Start USBHost_t36, HUB(s) and USB devices.
myusb.begin();
// Audio connections require memory to work. For more
// detailed information, see the MemoryAndCpuUsage example
AudioMemory(8);
// Comment these out if not using the audio adaptor board.
// This may wait forever if the SDA & SCL pins lack
// pullup resistors
sgtl5000_1.enable();
sgtl5000_1.volume(0.50);
Serial.println("Waiting for USB Filesystem");
while (!myFS) {
myusb.Task();
}
Serial.println("Filesystem started");
}
void playFile(File *pfile, const char *filename) {
Serial.print("Playing file: ");
Serial.println(filename);
// Start playing the file. This sketch continues to
// run while the file plays.
playWav1.play(pfile);
// A brief delay for the library read WAV info
delay(5);
// Simply wait for the file to finish playing.
while (playWav1.isPlaying()) {
// uncomment these lines if you audio shield
// has the optional volume pot soldered
//float vol = analogRead(15);
//vol = vol / 1024;
//sgtl5000_1.volume(vol);
}
}
void loop() {
File rootFile;
File wavFile;
const char *name = nullptr;
uint8_t name_len;
bool wav_files_found = false;
rootFile = myFS.open("/");
for (;;) {
wavFile = rootFile.openNextFile();
if (!wavFile) break;
name = wavFile.name();
name_len = strlen(name);
if ((strcmp(&name[name_len - 4], ".wav") == 0) || (strcmp(&name[name_len - 4], ".WAV") == 0)) {
wav_files_found = true;
playFile(&wavFile, name);
delay(500);
}
wavFile.close();
}
if (!wav_files_found) {
Serial.println("There were no *.wav files found in the root directory");
delay(5000);
}
delay(1500);
rootFile.close();
}