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	- Project: "Library Implementation"
	- Source Code compiled for: ESP32 DevKit V1
	- Source Code created on: 2024-01-15 14:20:01

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* if button is pressed so set out to 128. */
/****** SYSTEM REQUIREMENT 2 *****/
	/* read gps from spi and generate sinusoide signal if */
	/* position is moving. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <driver/dac.h>
#include <EasyButton.h>
#include <DS18B20.h>

/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
const uint8_t PUSH_BUTTON_PIN = 4;
bool isButtonPressed = false;

/****** SYSTEM REQUIREMENT 2 *****/
const uint8_t TEMP_SENSOR_PIN = 13;
bool isPositionMoving = false;

/****** FUNCTION PROTOTYPES *****/
void checkButton();
void checkPosition();
void updateOutputs();

void setup()
{
  // Pin configurations
  pinMode(PUSH_BUTTON_PIN, INPUT_PULLUP);
  pinMode(TEMP_SENSOR_PIN, INPUT);

  // Initialize button
  EasyButton button(PUSH_BUTTON_PIN);
  button.begin();

  // Additional setup code if needed
}

void loop()
{
  // Check button state
  checkButton();

  // Check position
  checkPosition();

  // Refresh outputs
  updateOutputs();
}

void checkButton()
{
  // Read button state
  if (digitalRead(PUSH_BUTTON_PIN) == LOW)
  {
    isButtonPressed = true;
    isPositionMoving = false;
  }
  else
  {
    isButtonPressed = false;
  }
}

void checkPosition()
{
  // Read temperature from sensor
  DS18B20 temperatureSensor(TEMP_SENSOR_PIN);
  float temperature = temperatureSensor.getTempC();

  // Check if position is moving based on temperature change
  static float prevTemperature = 0.0;
  float temperatureThreshold = 1.0; // Adjust threshold value as needed
  if (abs(temperature - prevTemperature) >= temperatureThreshold)
  {
    isPositionMoving = true;
    isButtonPressed = false;
    prevTemperature = temperature;
  }
  else
  {
    isPositionMoving = false;
    prevTemperature = temperature;
  }
}

void updateOutputs()
{
  // Output to DAC pin based on system requirements
  const uint8_t OUTPUT_PIN = 25;
  uint8_t outputValue = 0;

  // System Requirement 1: Set output to 128 if button is pressed
  if (isButtonPressed)
  {
    outputValue = 128;
  }

  // System Requirement 2: Generate sine wave if position is moving
  if (isPositionMoving)
  {
    // Code to generate sine wave on DAC pin
  }

  dac_output_voltage(DAC_CHANNEL_1, outputValue); // Use DAC_CHANNEL_1 for ESP32
}