**TFT Clock** rev_03

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    - Project: **TFT Clock**
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-12-09 11:17:56

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* print a clock on display. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SPI.h>
#include <ILI9488.h>    //https://github.com/jaretburkett/ILI9488
#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 displayClock(); // Function to display the clock

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t display_ILI9488_TFT_RST_PIN_D2        = 2;
const uint8_t display_ILI9488_TFT_DC_PIN_D3     = 3;

/***** DEFINITION OF SPI PINS *****/
const uint8_t display_ILI9488_TFT_SPI_PIN_MOSI_D11      = 11;
const uint8_t display_ILI9488_TFT_SPI_PIN_MISO_D12      = 12;
const uint8_t display_ILI9488_TFT_SPI_PIN_SCLK_D13      = 13;
const uint8_t display_ILI9488_TFT_SPI_PIN_CS_D10        = 10;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
bool    display_ILI9488_TFT_RST_PIN_D2_rawData      = 0;
bool    display_ILI9488_TFT_DC_PIN_D3_rawData       = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float   display_ILI9488_TFT_RST_PIN_D2_phyData      = 0.0;
float   display_ILI9488_TFT_DC_PIN_D3_phyData       = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create an instance of the display
ILI9488 display(display_ILI9488_TFT_SPI_PIN_CS_D10, display_ILI9488_TFT_DC_PIN_D3, display_ILI9488_TFT_SPI_PIN_MOSI_D11, display_ILI9488_TFT_SPI_PIN_SCLK_D13, display_ILI9488_TFT_RST_PIN_D2);

/****** SETUP FUNCTION *****/
void setup(void)
{
    // put your setup code here, to run once:
    pinMode(display_ILI9488_TFT_RST_PIN_D2, OUTPUT);
    pinMode(display_ILI9488_TFT_DC_PIN_D3, OUTPUT);
    pinMode(display_ILI9488_TFT_SPI_PIN_CS_D10, OUTPUT);

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

    // Initialize the display
    display.begin();
    display.fillScreen(ILI9488_BLACK); // Clear screen with black color
}

/****** LOOP FUNCTION *****/
void loop(void)
{
    // put your main code here, to run repeatedly:
    updateOutputs(); // Refresh output data
    displayClock(); // Display the current time
}

/****** FUNCTION TO UPDATE OUTPUTS *****/
void updateOutputs()
{
    digitalWrite(display_ILI9488_TFT_RST_PIN_D2, display_ILI9488_TFT_RST_PIN_D2_rawData);
    digitalWrite(display_ILI9488_TFT_DC_PIN_D3, display_ILI9488_TFT_DC_PIN_D3_rawData);
}

/****** FUNCTION TO DISPLAY CLOCK *****/
void displayClock()
{
    // Get current time
    unsigned long currentMillis = millis(); // Get the current time in milliseconds
    int seconds = (currentMillis / 1000) % 60; // Calculate seconds
    int minutes = (currentMillis / (1000 * 60)) % 60; // Calculate minutes
    int hours = (currentMillis / (1000 * 60 * 60)) % 24; // Calculate hours

    // Prepare the time string
    char timeString[9]; // HH:MM:SS
    sprintf(timeString, "%02d:%02d:%02d", hours, minutes, seconds);

    // Display the time on the screen
    display.setCursor(10, 50); // Set cursor position
    display.setTextColor(ILI9488_WHITE); // Set text color to white
    display.setTextSize(2); // Set text size
    display.print(timeString); // Print the time string
}

/* END CODE */