Sensor Display rev_04

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    - Project: Sensor Display
    - Source Code NOT compiled for: Arduino Nano
    - Source Code created on: 2025-07-27 10:40:33

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Implement a system to read data from a connected */
    /* sensor via the PipedStream library, process the */
    /* data, and display the results on a connected LCD */
    /* display. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */
/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <PipedStream.h>    // https://github.com/paulo-raca/ArduinoBufferedStreams
#include <LiquidCrystal_I2C.h>    // https://github.com/marcoschwartz/LiquidCrystal_I2C

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

/***** DEFINITION OF I2C PINS *****/
const uint8_t myLCD1602I2C_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t myLCD1602I2C_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t myLCD1602I2C_LCD1602I2C_I2C_SLAVE_ADDRESS = 39;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
PipedStream sensorStream; // Stream to read sensor data
LiquidCrystal_I2C lcd(0x27, 16, 2); // Initialize LCD at I2C address 0x27 with 16 columns and 2 rows

// Buffer to store sensor data
char sensorDataBuffer[32];

void setup(void)
{
  // Initialize serial communication for debugging
  Serial.begin(9600);

  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Sensor Data:");

  // Initialize the sensor stream
  // For simulation, we can connect the stream to a dummy source or assume it's connected
  // For actual sensor, connect sensor output to the stream's input
  // Here, we simulate by writing data to the stream in code (if needed)

  // For example, if sensor data is sent via serial or other means, connect accordingly
  // For now, assume sensorStream is connected to the sensor source externally
}

void loop(void)
{
  // Check if data is available from the sensor stream
  if (sensorStream.available()) {
    // Read data from the stream
    int len = sensorStream.readBytes(sensorDataBuffer, sizeof(sensorDataBuffer) - 1);
    sensorDataBuffer[len] = '\0'; // Null-terminate the string

    // Process data (for example, convert to integer or float if needed)
    // For simplicity, assume data is a string to display
    Serial.print("Received sensor data: ");
    Serial.println(sensorDataBuffer);

    // Display on LCD
    lcd.setCursor(0, 1);
    lcd.print("                "); // Clear previous data
    lcd.setCursor(0, 1);
    lcd.print(sensorDataBuffer);
  }

  // Optional: simulate sensor data input for testing
  // For example, write dummy data to the stream periodically
  static unsigned long lastMillis = 0;
  if (millis() - lastMillis > 2000) { // every 2 seconds
    lastMillis = millis();
    // Simulate sensor data
    const char* dummyData = "Temp:25C";
    sensorStream.write(dummyData, strlen(dummyData));
  }

  delay(100);
}