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	- Project: "Arduino Setup"
	- Source Code compiled for: ESP32 DevKit V1
	- Source Code created on: 2024-01-14 16:42:23

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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 *****/


/********* User code review feedback **********
#### Feedback 1 ####
- generate a function sinewave used to reproduce sine wave in dac 
output. 
********* User code review feedback **********/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <SPI.h>
#include <EasyButton.h>

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t butt_PushButton_PIN_D4 = 4;
const uint8_t ditpullup_PIN_D14 = 14;
const uint8_t ditpulldown_PIN_D16 = 16;

/***** DEFINITION OF DAC OUTPUT PINS *****/
const uint8_t out_PIN_D25 = 25;

/***** DEFINITION OF SPI PINS *****/
const uint8_t spi_PIN_MOSI_D23 = 23;
const uint8_t spi_PIN_MISO_D19 = 19;
const uint8_t spi_PIN_SCLK_D18 = 18;
const uint8_t spi_PIN_CS_D5 = 5;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
EasyButton button(butt_PushButton_PIN_D4, true, true); // Instantiate the EasyButton object with the pin and enable pullup and inverted state

bool positionIsMoving = false; // Declare and initialize the positionIsMoving variable

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(butt_PushButton_PIN_D4, INPUT_PULLUP);
  pinMode(ditpullup_PIN_D14, INPUT_PULLUP);
  pinMode(ditpulldown_PIN_D16, INPUT_PULLDOWN);

  pinMode(spi_PIN_CS_D5, OUTPUT);
  // start the SPI library:
  SPI.begin();

  button.begin(); // Initialize the button object

  // Set DAC output pin as output
  pinMode(out_PIN_D25, OUTPUT);
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  button.read(); // Read the button state

  if (button.wasPressed())
  {
    // Button was pressed
    // Implement System Requirement 1: Set DAC output to 128
    analogWrite(out_PIN_D25, 128);
  }

  // Read GPS data from SPI and check if the position is moving
  // Implement System Requirement 2: Generate sinusoidal signal if position is moving
  // Add your code here to read GPS data from SPI and check position

  // If position is moving, generate sinusoidal signal
  if (positionIsMoving)
  {
    generateSinewave();
  }

  delay(100); // Delay for stability
}

void generateSinewave(void)
{
  // Implement code to generate sine wave in DAC output
  // Add your code here to generate the sinewave signal
}