RP2040 and "Mini Digital Power Amp"

[pktmterenceg]

Hi!

Thanks so much for your efforts in creating & maintaining this code!

I wondered if you could tell me how to wire up a board like this one: https://a.co/d/3lAyalz to my Pico in order to use this library/code, please? I have the idea such boards can be made to work with a Pico, but I'm lost at which pins to connect to.

Thanks!

[AMCerasoli]

I'm also trying to wire up that board but to my Wemos S2 mini... I have some code that is kind of working but the sound is so loud and distorted... I know that the S2 mini has a built in 8bit DAC but I don't know how to configure the library to use it... I attached the wire up pics...

And the code:

`#include <Arduino.h>

#if defined(ARDUINO_ARCH_RP2040)
void setup() {}
void loop() {}

#else
#if defined(ESP32)
#include <WiFi.h>
#else
#include <ESP8266WiFi.h>
#endif
#include "AudioFileSourceICYStream.h"
#include "AudioFileSourceBuffer.h"
#include "AudioGeneratorMP3.h"
#include "AudioOutputI2S.h"

// To run, set your ESP8266 build to 160MHz, update the SSID info, and upload.

// Enter your WiFi setup here:
#ifndef STASSID
#define STASSID "lul"
#define STAPSK "lul"
#endif

const char* ssid = STASSID;
const char* password = STAPSK;

// Randomly picked URL
const char *URL="http://kvbstreams.dyndns.org:8000/wkvi-am";

AudioGeneratorMP3 *mp3;
AudioFileSourceICYStream *file;
AudioFileSourceBuffer *buff;
AudioOutputI2S *out;

// Called when a metadata event occurs (i.e. an ID3 tag, an ICY block, etc.
void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string)
{
const char *ptr = reinterpret_cast<const char *>(cbData);
(void) isUnicode; // Punt this ball for now
// Note that the type and string may be in PROGMEM, so copy them to RAM for printf
char s1[32], s2[64];
strncpy_P(s1, type, sizeof(s1));
s1[sizeof(s1)-1]=0;
strncpy_P(s2, string, sizeof(s2));
s2[sizeof(s2)-1]=0;
Serial.printf("METADATA(%s) '%s' = '%s'\n", ptr, s1, s2);
Serial.flush();
}

// Called when there's a warning or error (like a buffer underflow or decode hiccup)
void StatusCallback(void *cbData, int code, const char *string)
{
const char *ptr = reinterpret_cast<const char *>(cbData);
// Note that the string may be in PROGMEM, so copy it to RAM for printf
char s1[64];
strncpy_P(s1, string, sizeof(s1));
s1[sizeof(s1)-1]=0;
Serial.printf("STATUS(%s) '%d' = '%s'\n", ptr, code, s1);
Serial.flush();
}

void setup()
{
Serial.begin(115200);
delay(1000);
Serial.println("Connecting to WiFi");

WiFi.disconnect();
WiFi.softAPdisconnect(true);
WiFi.mode(WIFI_STA);

WiFi.begin(ssid, password);

// Try forever
while (WiFi.status() != WL_CONNECTED) {
Serial.println("...Connecting to WiFi");
delay(1000);
}
Serial.println("Connected");

audioLogger = &Serial;
file = new AudioFileSourceICYStream(URL);
file->RegisterMetadataCB(MDCallback, (void*)"ICY");
buff = new AudioFileSourceBuffer(file, 2048);
buff->RegisterStatusCB(StatusCallback, (void*)"buffer");
out = new AudioOutputI2S(0, 17);
out->SetOutputModeMono(true);
out->SetPinout(0, 0, 17);
out->SetGain(1);
mp3 = new AudioGeneratorMP3();
mp3->RegisterStatusCB(StatusCallback, (void*)"mp3");
mp3->begin(buff, out);

}

void loop()
{
static int lastms = 0;

if (mp3->isRunning()) {
if (millis()-lastms > 1000) {
lastms = millis();
Serial.printf("Running for %d ms...\n", lastms);
Serial.flush();
}
if (!mp3->loop()) mp3->stop();
} else {
Serial.printf("MP3 done\n");
delay(1000);
}
}
#endif`