cmake gcc or llvm teensy-x86-stubs^ teensy-audio-x86-stubs^ teensy-x86-sd-stubs^ boost-test

• install boost unit-test library:
  • linux: sudo apt-get install -yq libboost-test-dev
  • macos: brew install boost

• To install the library, use the library manager in Teensyduino (search for TeensyVariablePlayback). Teensyduino should already have all the necessary dependencies pre-installed.

• Have a look at the examples in the file menu to get started...

• Visual Studio Code

clone repo

> git clone https://github.com/newdigate/teensy-variable-playback.git
> cd teensy-variable-playback

teensy build

You don't need to download or install Teensyduino or Arduino to build the library or examples. Just clone the cores library and any dependencies to a common folder, denoted by DEPSPATH (in this case /home/nic/teensy_libraries).

 > cd /home/nic/teensy_libraries
 > git clone https://github.com/PaulStoffregen/cores.git
 > git clone https://github.com/PaulStoffregen/Audio.git
 > git clone -b Juse_Use_SdFat https://github.com/PaulStoffregen/SD.git 
 > git clone https://github.com/PaulStoffregen/Wire.git
 > git clone https://github.com/PaulStoffregen/SPI.git
 > git clone https://github.com/PaulStoffregen/SerialFlash.git
 > git clone https://github.com/PaulStoffregen/arm_math.git
 > git clone https://github.com/greiman/SdFat.git

set(COMPILERPATH "/Applications/Arm/bin/")
set(DEPSPATH "/home/nic/teensy_libraries")
set(COREPATH "${DEPSPATH}/cores/teensy4/")

> cd /home/nic/teensy-variable-playback
> mkdir cmake-build-debug
> cd cmake-build-debug
> cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE:FILEPATH="../cmake/toolchains/teensy41.cmake" ..
> make

linux build

build tests on linux

> ./build-linux.sh

build tests on win

> mkdir cmake-build-debug
> cd cmake-build-debug
> cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE:FILEPATH="../cmake/toolchains/linux.cmake" ..
> make

run tests

> cmake-build-debug/test/test_suite1

visual studio code

• download vs code
  • required extensions
    • ms-vscode.cpptools
  • optional extensions
    • ms-vscode.cmake-tools
    • hbenl.vscode-test-explorer
    • ms-vscode.test-adapter-converter
    • nicnewdigate.boost-test-adapter-debug
• open root folder of repository in visual studio code
• open terminal in visual studio code build, build as above
• (add breakpoint)
• launch

#include <Arduino.h>
#include <Audio.h>
#include <TeensyVariablePlayback.h>

// GUItool: begin automatically generated code
AudioPlayArrayResmp      rraw_a1;        //xy=321,513
AudioOutputI2S           i2s1;           //xy=675,518
AudioConnection          patchCord1(rraw_a1, 0, i2s1, 0);
AudioConnection          patchCord2(rraw_a1, 0, i2s1, 1);
AudioControlSGTL5000     sgtl5000_1;     //xy=521,588
// GUItool: end automatically generated code

unsigned char kick_raw[] = {
  // ... little-endian 16-bit mono 44100 raw data, generated using linux cmd 'xxd -i kick.raw', raw file saved in Audacity
  0x99, 0x02, 0xd7, 0x02, 0xfa, 0x02, 0x5f, 0x03, 0xc1, 0x03, 0x2a, 0x04,
  0xad, 0x04, 0xa5, 0x05, 0x76, 0x06, 0x2f, 0x07, 0x9e, 0x07, 0xe2, 0x07,
  0x43, 0x08, 0x92, 0x08, 0xb2, 0x08, 0xe8, 0x08, 0x16, 0x09, 0xda, 0x08,
  // ... continued ... 
};
unsigned int kick_raw_len = 6350; // length in bytes == numsamples * 2

void setup() {
    AudioMemory(20);
    sgtl5000_1.enable();
    sgtl5000_1.volume(0.5f, 0.5f);
    rraw_a1.setPlaybackRate(0.5);
    rraw_a1.enableInterpolation(true);  
}

void loop() {
    if (!rraw_a1.isPlaying()) {
        delay(1000);
        rraw_a1.playRaw((int16_t *)kick_raw, kick_raw_len/2, 1);  //note: we give number of samples - NOT number of bytes!!!! 1 is for mono (2 for stereo, etc)
    }
}