Audio Tools- Getting Pico working with an i2s dac using Platform IO

[SnazzyBlanket]

I am putting this here for others who want to try using the RP2040 with Platoform IO and Arduino-Audio tools.

i was struggling with getting the Dac to work UNTIL i found this thread

earlephilhower/arduino-pico#1656

after reading through the thread I was able to get sound working here is the working code for a sine generator

`
/**

• @file streams-generator-analog.ino
• @author Phil Schatzmann
• @brief see https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-stream/streams-generator-analog/README.md
• @author Phil Schatzmann
• @copyright GPLv3
  **/
  #include <Arduino.h>
  #include <I2S.h>

#include "WiFi.h"

#define LED_PIN 25
#include "AudioTools.h"
#include "AudioLibs/AudioSTK.h"

#include "AudioLibs/AudioBoardStream.h"

AudioInfo info(44100, 1, 16);
int16_t sine_array[] = {0, 4560, 9031, 13327, 17363, 21062, 24350, 27165, 29450, 31163, 32269, 32747, 32587, 31793, 30381, 28377, 25820, 22761, 19259, 15383, 11206, 6812, 2285, -2285, -6812, -11206, -15383, -19259, -22761, -25820, -28377, -30381, -31793, -32587, -32747, -32269, -31163, -29450, -27165, -24350, -21062, -17363, -13327, -9031, -4560 };
GeneratorFromArray<int16_t> sineWave(sine_array,0,false);
GeneratedSoundStream<int16_t> sound(sineWave); // Stream generated from sine wave
I2SStream out;
StreamCopy copier(out, sound); // copies sound into i2s

// Arduino Setup
void setup(void) {
// Open Serial
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Error);

// start I2S
I2SConfig i2sconfig = out.defaultConfig(TX_MODE);
i2sconfig.buffer_count = 5;
i2sconfig.buffer_size = 512;
i2sconfig.pin_bck = 27;
i2sconfig.pin_data = 26;
i2sconfig.pin_ws = 28;
out.begin(i2sconfig);

// Setup sine wave
sineWave.begin(info);
Serial.println("started...");
}

// Arduino loop - copy sound to out
void loop() {
copier.copy();
}

`

[SnazzyBlanket]

and here is the exact board info file i used

_
[env:rpipico]
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
board = rpipico
framework = arduino
board_build.core = earlephilhower
board_build.filesystem_size = 0.5m
upload_protocol = cmsis-dap
lib_deps =
khoih-prog/RP2040_PWM@^1.7.0
bodmer/TFT_eSPI@^2.5.43
platform_packages =
maxgerhardt/framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git_

[SnazzyBlanket]

this was with the PCM5102 Dac module

[pschatzmann]

Shouldn't you just better follow the official instructions ?

[SnazzyBlanket]

I am not going to worry about it. I spent 8 hours trying to get it to work and only found relief once i read that github thread. the good news it now works very well.

[SnazzyBlanket]

please keep in mind the way they had it in the offical instructions DID NOT WORK for me. it was only once i changed it to the way they had it in the github thread that it worked.

however (and i can test this tomorow) IT Could also be because I added the logger line with ERROR instead of warning (which is what the original poster was talking about)

sorry by this point I am a bit exhausted

[pschatzmann]

No worries:. I just wanted the add the link to the official documentation, since this might change in the future.
And here is the link to my instructions for PlatformIO

[SnazzyBlanket]

thanks so much