I want to play mp3 when PIR is activated

Projects Programming
1 
I am using the following code. But mp3 doesn’t play
Who can help me?

#include "Arduino.h"
#include "Audio.h"
#include "SD.h"
#include "FS.h"
 
// Digital I/O used
#define SD_CS          5
#define SPI_MOSI      23    // SD Card
#define SPI_MISO      18
#define SPI_SCK       19
 
#define I2S_DOUT      25
#define I2S_BCLK      27    // I2S
#define I2S_LRC       26


const int PIN_TO_SENSOR = 2; //  pin connected to OUTPUT pin of sensor
int pinStateCurrent   = LOW;  // current state of pin
int pinStatePrevious  = LOW;  // previous state of pin

Audio audio;
 
void setup() {
    
    
   pinMode(PIN_TO_SENSOR, INPUT); // set ESP32 pin to input mode to read value from OUTPUT pin of sensor

    pinMode(5, OUTPUT);   
    digitalWrite(5, LOW);
    Serial.begin(115200);
   
     SPI.begin(SPI_SCK, SPI_MISO, SPI_MOSI);
    Serial.begin(115200);
    if(!SD.begin(SD_CS))
    {
      Serial.println("Error talking to SD card!");
      while(true);  // end program
    }  
    audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
    audio.setVolume(15); // 0...21
    audio.connecttoFS(SD,"/mysilverl.mp3"); 
    
}
 
void loop(){
  
  pinStatePrevious = pinStateCurrent; // store old state
  pinStateCurrent = digitalRead(PIN_TO_SENSOR);   // read new state

  if (pinStatePrevious == LOW && pinStateCurrent == HIGH) {   // pin state change: LOW -> HIGH
    Serial.println("Motion detected!");
    audio.loop();
    
  }
  else
  if (pinStatePrevious == HIGH && pinStateCurrent == LOW) {   // pin state change: HIGH -> LOW
    Serial.println("Motion stopped!");

    // TODO: turn off alarm, light or deactivate a device ... here
  }

   }
2

Tell us more

3

as you experienced from the other answer

the short answer just arises new questions:

  • what shall I tell more?

It is the same situation for your potential helpers
Your potential helpers need more information:

Where did you donwload the libraries
Audio.h ?
sd.h?
fs.h?

What exact type of microcontroller-board are you using?
What I2S-device are you using? please post a link to the data-sheet of this I2S-device
post a hand-drawn schematic of how

  • you have wired the I2S-device to the microcontroller
  • you have wired the SD-card-socket to the microcontroller

post a link to the datasheet of your I2S-device
post a link to the datasheet of your SD-card-socket

What file-format does the audio-library expect to read?

The microcontroller-world is not super-standardised like USB-devices.
You have to take care about more than just "Does the plug fit into the socket?"

best regards Stefan

4

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.