#define USE_SdFat_ // uncomment for SdFat.h, comment for SD.h lib.
// NOTE: uncomment~comment also in play_sd_raw.cpp & play_sd_wav.cpp
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#ifdef USE_SdFat_
#include <SdFat.h>
//SdFatSdioEX SD; // SdFatSdioEX uses extended multi-block transfers without DMA.
SdFatSdio SD; // SdFatSdio uses a traditional DMA SDIO implementation.
// Note the difference is speed and busy yield time.
// Teensy 3.5 & 3.6 SDIO: 4 to 5 times the throughput using the 4-bit SDIO mode compared to the 1-bit SPI mode
#else
#include <SD.h>
#endif
#include <SerialFlash.h>
File root;
File entry;
AudioPlaySdWav playWav1;
AudioOutputUSB audioOutput; // must set Tools > USB Type to Audio
AudioOutputAnalog dac;
AudioConnection patchCord1(playWav1, 0, audioOutput, 0);
AudioConnection patchCord2(playWav1, 1, audioOutput, 1);
AudioConnection patchCord3(playWav1, 0, dac, 0);
// Use these with the Teensy Audio Shield
//#define SDCARD_CS_PIN 10
//#define SDCARD_MOSI_PIN 7
//#define SDCARD_SCK_PIN 14
////////// For Sd.h lib. only /////////
// Use these with the Teensy 3.5 & 3.6 SD card
#define SDCARD_CS_PIN BUILTIN_SDCARD
#define SDCARD_MOSI_PIN 11 // not actually used
#define SDCARD_SCK_PIN 13 // not actually used
// Use these for the SD+Wiz820 or other adaptors
//#define SDCARD_CS_PIN 4
//#define SDCARD_MOSI_PIN 11
//#define SDCARD_SCK_PIN 13
elapsedMillis since_Update;
int SEC = 0;
void setup() {
Serial.begin(9600);
delay(1000);
// Audio connections require memory to work. For more
// detailed information, see the MemoryAndCpuUsage example
AudioMemory(20);
SPI.setMOSI(SDCARD_MOSI_PIN);
SPI.setSCK(SDCARD_SCK_PIN);
#ifdef USE_SdFat_
if (!(SD.begin())) { //</////// SdFat.h /////////
delay(500);
Serial.println(" SdFat.h ");
// stop here, but print a message repetitively
while (1) {
Serial.println("Unable to access the SD card");
delay(500);
}
}
#else //</////// Sd.h /////////
if (!(SD.begin(SDCARD_CS_PIN))) {
// stop here, but print a message repetitively
while (1) {
Serial.println("Unable to access the SD card");
delay(500);
}
}
#endif
#if defined(SdFat_h)
Serial.print( "SdFat version "), Serial.println( SD_FAT_VERSION ), Serial.println("");
#elif defined(__SD_H__)
Serial.println( "SD - a slightly more friendly wrapper for sdfatlib"), Serial.println("");
#endif
#ifdef USE_SdFat_
char filename[255]; //
root = SD.open("/"); // ROOT
while (true) {
File entry = root.openNextFile();
entry.getName(filename, sizeof(filename));
if (entry.isDirectory()) {
Serial.print("Dir. "), Serial.println(filename);
} else {
Serial.print(" "), Serial.println(filename);
}
if (! entry) {
// no more files
Serial.println(" **nomorefiles** ");
break;
}
}
entry.close();
root.close();
#endif
}
void playFile(const char *filename)
{
playWav1.play(filename);
// A brief delay for the library read WAV info
delay(5);
// Simply wait for the file to finish playing.
while (playWav1.isPlaying()) {
if (since_Update > 999) {
since_Update = 0;
Serial.print(" SEC: "), Serial.println(SEC);
SEC++;
}
}
SEC = 0;
}
void loop() {
playFile("SDTEST1 test long name.WAV"); // uppercase or lowercase 255 long max.
delay(500);
/*playFile("SDTEST2.WAV");
delay(500);
playFile("SDTEST3.WAV");
delay(500);
playFile("SDTEST4.WAV");
delay(1500);*/
}
// A known problem occurs on Macintosh computers, where the Mac's driver
// does not seem to be able to adapt and transmit horribly distorted
// audio to Teensy after a matter of minutes. An imperfect workaround
// can be enabled by editing usb_audio.cpp. Find and uncomment
// "#define MACOSX_ADAPTIVE_LIMIT". More detailed info is available here:
// https://forum.pjrc.com/threads/34855-Distorted-audio-when-using-USB-input-on-Teensy-3-1?p=110392&viewfull=1#post110392
