How to connect ADS1115 (ADC) to AudioKit A1S

[francinv]

I have a ESP32-A1S AudioKit that is connected to a speaker and uses the SD-card to play music. I am trying to connect a: ADS1115 16-bit ADC to the board, but are having problems with establishing a connection to the ADC in question. It is connected to the board with the soldered heads, which is also why I disconnect two keys.

This:

// Initialize the ADS1115 on the same I2C bus.
  if (!ads.begin()) {
    Serial.println("ADS1115 not found!");
    while (1);
  }

I am not able to come past. Have anyone experienced issues like this and know how I can establish a connection? Is it maybe anything I have misunderstood?

Every answer greatly appreciated 🙏🏾

This is my complete Arduino Sketch:

#include <Wire.h>

#include <Adafruit_ADS1X15.h>
#include "AudioTools.h"
#include "AudioTools/AudioLibs/AudioBoardStream.h"
#include "AudioTools/AudioLibs/AudioSourceIdxSDFAT.h"
#include "AudioTools/AudioCodecs/CodecMP3Helix.h"

#define BUTTON_PIN 21  // GPIO 21 is connected to the button

Adafruit_ADS1115 ads;

bool isPlaying = false;  // Playback status
int lastButtonState = HIGH;

const char *startFilePath = "/";
const char* ext = "mp3";

SdSpiConfig sdcfg(PIN_AUDIO_KIT_SD_CARD_CS, DEDICATED_SPI, SD_SCK_MHZ(10), &SPI);
AudioSourceIdxSDFAT source(startFilePath, ext, sdcfg);
AudioBoardStream kit(AudioKitEs8388V1);
MP3DecoderHelix decoder;
AudioPlayer player(source, kit, decoder);

void setup() {
  Serial.begin(115200);
  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);

  // Initialize the default I2C (Wire) with SDA on 18 and SCL on 23.
  Wire.begin(18, 23);

  // Update the AudioKit CODEC I2C configuration BEFORE calling kit.begin()
  auto codecI2COpt = AudioKitEs8388V1.getPins().getI2CPins(PinFunction::CODEC);
  auto pin_four = kit.board().getPins().getPin(PinFunction::KEY, 4);
  auto pin_five = kit.board().getPins().getPin(PinFunction::KEY, 5);

  if (pin_four) pin_four.value().pin_logic = PinLogic::Inactive;
  if (pin_five) pin_five.value().pin_logic = PinLogic::Inactive;

  if (codecI2COpt) {
    auto i2cConfig = codecI2COpt.value();
    i2cConfig.p_wire = &Wire; // Force the CODEC to use Wire with 18 and 23
    AudioKitEs8388V1.getPins().setI2C(i2cConfig);
  }

  // Now set up the AudioKit output.
  auto cfg = kit.defaultConfig(TX_MODE);
  kit.begin(cfg);

  // Initialize the ADS1115 on the same I2C bus.
  if (!ads.begin()) {
    Serial.println("ADS1115 not found!");
    while (1);
  }

  // Set up the audio player.
  player.setVolume(0.5);
  player.begin();
  player.setActive(false);

  pinMode(BUTTON_PIN, INPUT_PULLUP);
}

void loop() {
  // Some code
}

[pschatzmann]

I dont't quite understand what you are trying do do: your wire related logic seems to to be unnecessary because it just implements what the standard AudioDriver functionality is already doing.

I havent's used any of those pins but

• If you want to use another I2C for ADS1115 use Wire1
• I would avoid the pins that are used by other functionality like buttons, led, or the pa: so I think the JTAG pins (15 and 16) might be a saver option
• to be on the save side, do your pin definitions for the ADS1115 after calling kit.begin(cfg); This will then just overwrite the pin logic that was automatically set up before.