**Display Initialization** rev_02

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    - Project: **Display Initialization**
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-05-01 07:34:51

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Enable the Obsidian ESP32 board to control the */
    /* ILI9341 TFT display, utilizing SPI communication */
    /* for efficient data transfer. Ensure proper */
    /* initialization of the display and manage output */
    /* states for the reset and data command pins. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SPI.h>
#include <Adafruit_ILI9341.h>    //https://github.com/adafruit/Adafruit_ILI9341
#include <U8g2_for_Adafruit_GFX.h>    //https://github.com/olikraus/U8g2_for_Adafruit_GFX

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

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t dis_ILI9341_TFT_RST_PIN_D4        = 4;
const uint8_t dis_ILI9341_TFT_DC_PIN_D13        = 13;

/***** DEFINITION OF SPI PINS *****/
const uint8_t dis_ILI9341_TFT_SPI_PIN_MOSI_D23      = 23;
const uint8_t dis_ILI9341_TFT_SPI_PIN_MISO_D19      = 19;
const uint8_t dis_ILI9341_TFT_SPI_PIN_SCLK_D18      = 18;
const uint8_t dis_ILI9341_TFT_SPI_PIN_CS_D5         = 5;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool    dis_ILI9341_TFT_RST_PIN_D4_rawData        = 0;
bool    dis_ILI9341_TFT_DC_PIN_D13_rawData        = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float   dis_ILI9341_TFT_RST_PIN_D4_phyData        = 0.0;
float   dis_ILI9341_TFT_DC_PIN_D13_phyData        = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Instantiate the display object
Adafruit_ILI9341 display(dis_ILI9341_TFT_SPI_PIN_CS_D5, dis_ILI9341_TFT_DC_PIN_D13, dis_ILI9341_TFT_SPI_PIN_MOSI_D23, dis_ILI9341_TFT_SPI_PIN_SCLK_D18, dis_ILI9341_TFT_RST_PIN_D4);

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(dis_ILI9341_TFT_RST_PIN_D4, OUTPUT);
    pinMode(dis_ILI9341_TFT_DC_PIN_D13, OUTPUT);
    pinMode(dis_ILI9341_TFT_SPI_PIN_CS_D5, OUTPUT);

    // start the SPI library:
    SPI.begin();

    // Initialize the display
    initializeDisplay();
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    updateOutputs(); // Refresh output data
}

void updateOutputs()
{
    digitalWrite(dis_ILI9341_TFT_RST_PIN_D4, dis_ILI9341_TFT_RST_PIN_D4_rawData);
    digitalWrite(dis_ILI9341_TFT_DC_PIN_D13, dis_ILI9341_TFT_DC_PIN_D13_rawData);
}

void initializeDisplay() {
    // Initialize the display
    display.begin();
    display.setRotation(3); // Set the rotation of the display
    display.fillScreen(ILI9341_BLACK); // Clear the screen with black color
}

/* END CODE */