BUG in the WavFilePlayer example

[mariocaptain]

Description

The WavFilePlayer example doesn't work with Teensy 3.5's BUILTIN_SDCARD pin.

SD.begin(BUILTIN_SDCARD) freezes as long as there is any AudioPlaySdWav.play() call in the code.

I have tested with many brand new Teensy 3.5 boards and SD cards.

Also I have tested and can confirm that this problem doesn't happen when an external SPI SD module. In that case, in the below code I just replace BUILTIN_SDCARD with the CS pin connected to the module (8 in my case). So the same code works with an external SD module.

Steps To Reproduce Problem

You can use my code below, which is essentially the stock WavFilePlayer example.

Hardware & Software

Board: Teensy 3.5
Shields / modules used: none
Arduino IDE version: 1.8.9
Teensyduino version: 1.46
Operating system & version: Windows 10

Arduino Sketch

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Reply With Quote Reply With Quote Today, 09:11 AM #6
mariocaptain  mariocaptain is offline
Member
Join Date
Mar 2017
Posts
21
This is my code:
Code:
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

// GUItool: begin automatically generated code
AudioPlaySdWav           playSdWav1;     //xy=343.00000381469727,3690.2000064849854
AudioOutputAnalogStereo  dacs1;          //xy=525.0000076293945,3693.2000064849854
AudioConnection          patchCord1(playSdWav1, 0, dacs1, 0);
AudioConnection          patchCord2(playSdWav1, 1, dacs1, 1);
// GUItool: end automatically generated code

// 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

void setup() {
  Serial.begin(115200);
  AudioMemory(8);
  SPI.setMOSI(SDCARD_MOSI_PIN);
  SPI.setSCK(SDCARD_SCK_PIN);
  if (!(SD.begin(SDCARD_CS_PIN))) {
    while (1) {
      Serial.println("Unable to access the SD card");
      delay(500);
    }
  }
}

void playFile(const char *filename)
{
  Serial.print("Playing file: ");
  Serial.println(filename);

  playSdWav1.play(filename);
  delay(5);

  // Simply wait for the file to finish playing.
  while (playSdWav1.isPlaying()) {
  }
}

void loop() {
  playFile("SDTEST1.WAV");  // filenames are always uppercase 8.3 format
  delay(3000);
}

[eaconner]

I'm having the same issue. Switching to a previous version of Arduino and Teensyduino works, seems like the latest version broke something with AudioPlaySdWav.

[eaconner]

Looks like PR #294 should fix the issue but I haven't tested it yet.

[manitou48]

The same hang occurs at SD.open() in play_sd_raw.cpp. The PR #294 does not consider problem in play_sd_raw.cpp

[tsandmann]

I have updated PR #294 to cover AudioPlaySdRaw as well.