Arduino Function Implementation

Overview

In this section, we will create a simple Arduino function that reads sensor data from an analog pin, processes it, and then outputs the processed data to a serial monitor. The function will include robust input validation, documentation, and comments to facilitate understanding.

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Required Libraries

For basic Arduino functionality, we will use the standard Arduino library that comes with the IDE.

#include 

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Function Implementation

Function: readAnalogSensor

This function reads an analog value from the specified pin, processes it, and prints the result to the serial monitor.

Documentation

/**
 * @brief Reads an analog sensor value from a specified pin, processes it,
 *        and prints the result to the serial monitor.
 *
 * @param pin The pin number where the sensor is connected (0-5 on most Arduinos).
 * @return void
 * 
 * @exception InvalidArgumentException Throws if pin is not a valid analog pin.
 */
void readAnalogSensor(int pin) {
    // Validate the pin number
    if(pin < 0 || pin > 5) {
        Serial.println("Error: Invalid pin number. Valid pins are 0-5.");
        return; // Exit the function if the pin is invalid
    }

    // Read the analog input
    int sensorValue = analogRead(pin);

    // Process the sensor data (for example, scaling it)
    float voltage = sensorValue * (5.0 / 1023.0); // Convert to voltage (0-5V)

    // Output the result
    Serial.print("Analog read from pin ");
    Serial.print(pin);
    Serial.print(": ");
    Serial.println(voltage, 3); // Print the voltage with three decimal places
}

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Setup and Loop Function

setup and loop Function

To utilize our readAnalogSensor function, we need to configure the setup and loop functions as follows:

void setup() {
    // Initialize the serial communication at 9600 baud rate
    Serial.begin(9600);
}

void loop() {
    // Call the function to read from analog pin 0 every 1 second
    readAnalogSensor(0);
    delay(1000); // Wait for 1 second before next read
}

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Code Usage Example

Below is an example of a complete Arduino sketch that implements the readAnalogSensor function:

#include 

/**
 * @brief Reads an analog sensor value from a specified pin, processes it,
 *        and prints the result to the serial monitor.
 *
 * @param pin The pin number where the sensor is connected (0-5 on most Arduinos).
 * @return void
 * 
 * @exception InvalidArgumentException Throws if pin is not a valid analog pin.
 */
void readAnalogSensor(int pin) {
    // Validate the pin number
    if(pin < 0 || pin > 5) {
        Serial.println("Error: Invalid pin number. Valid pins are 0-5.");
        return;
    }

    // Read the analog input
    int sensorValue = analogRead(pin);

    // Process the sensor data (for example, scaling it)
    float voltage = sensorValue * (5.0 / 1023.0); // Convert to voltage (0-5V)

    // Output the result
    Serial.print("Analog read from pin ");
    Serial.print(pin);
    Serial.print(": ");
    Serial.println(voltage, 3);
}

void setup() {
    // Initialize the serial communication at 9600 baud rate
    Serial.begin(9600);
}

void loop() {
    // Call the function to read from analog pin 0 every 1 second
    readAnalogSensor(0);
    delay(1000); // Wait for 1 second before next read
}

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Conclusion

This Arduino sketch demonstrates a basic yet robust function to read and process analog sensor data. It includes necessary validations and clear documentation for future reference.

For further development and advanced topics, consider exploring the courses on the Enterprise DNA Platform to enhance your programming and data analysis skills in conjunction with Arduino.