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	- Project: "Digital Input & DAC"
	- Source Code compiled for: ESP32 DevKit V1
	- Source Code created on: 2024-01-15 23:00:17

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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 <driver/dac.h>
#include <EasyButton.h>
#include <OneWire.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(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;
const uint8_t temp_DS18B20_DQ_PIN_D13 = 13;

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

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
uint8_t out_PIN_D25_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float out_PIN_D25_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
EasyButton butt_PushButton(butt_PushButton_PIN_D4);
OneWire oneWire(temp_DS18B20_DQ_PIN_D13);

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

  butt_PushButton.begin();
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  butt_PushButton.read();

  /****** SYSTEM REQUIREMENT 1 *****/
  if (butt_PushButton.isPressed())
  {
    out_PIN_D25_rawData = 128;
  }
  else
  {
    out_PIN_D25_rawData = 0;
  }

  /****** SYSTEM REQUIREMENT 2 *****/
  // Read GPS from SPI and check if position is moving
  bool isMoving = false; // Replace with actual logic to determine if position is moving

  if (isMoving)
  {
    // Generate sinusoidal signal
    float amplitude = 100.0; // Replace with desired amplitude
    float frequency = 1.0;   // Replace with desired frequency

    out_PIN_D25_phyData = amplitude * sin(frequency * millis() / 1000.0);
    out_PIN_D25_rawData = map(out_PIN_D25_phyData, -amplitude, amplitude, 0, 255);
  }
  else
  {
    out_PIN_D25_phyData = 0.0;
    out_PIN_D25_rawData = 0;
  }

  updateOutputs(); // Refresh output data
}

void updateOutputs(void)
{
  dac_output_voltage(DAC_CHANNEL_1, out_PIN_D25_rawData);
}