ESP32 Microphone rev_01

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    - Project: ESP32 Microphone
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-09-07 07:25:56

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Measures the voltage of the mic */
/****** END SYSTEM REQUIREMENTS *****/


/* START CODE */

/****** DEFINITION OF LIBRARIES *****/

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

const int micPin = 34;  // ADC pin for microphone input

// Reads the microphone voltage on the given ADC pin (ESP32, 12-bit ADC: 0-4095)
float readMicVoltage(int pin)
{
    int adcValue = analogRead(pin);
    // ESP32 ADC: 12-bit resolution, 0-4095
    // Map to 0 - 3.3V
    float voltage = (adcValue * 3.3f) / 4095.0f;
    return voltage;
}

void setup(void)
{
    // put your setup code here, to run once:
    Serial.begin(115200);
    // Give time for Serial to initialize
    delay(10);
    // Optional: configure ADC characteristics could go here if needed
}


void loop(void)
{
    // put your main code here, to run repeatedly:
    int micValue = analogRead(micPin);
    float micVoltage = readMicVoltage(micPin);

    Serial.print("ADC: ");
    Serial.print(micValue);
    Serial.print("  Voltage: ");
    Serial.print(micVoltage, 3);
    Serial.println(" V");

    delay(50);
}

/* END CODE */