/*
 * Serial-LCD.h
 * Author: Marwen Maghrebi
 */

#ifndef INC_SERIAL_LCD_H_
#define INC_SERIAL_LCD_H_

#include "main.h"
#include <stdio.h>
#include <string.h>

extern UART_HandleTypeDef huart1;

// Function prototypes
void Delay_10ms(void);
void Delay_500ms(void);
void LCD_UART_Transmit(uint8_t *pData, uint16_t Size);
void LCD_sendCommand(uint8_t command);
void LCD_sendData(uint8_t data);
void LCD_setCursor(uint8_t row, uint8_t col);
void LCD_scroll_left(uint8_t num_chars);
void LCD_scroll_right(uint8_t num_chars);
void LCD_home();
void LCD_blinking_cursor_ON();
void LCD_blinking_cursor_OFF();
void LCD_clearScreen(void);
void Move_cursor_left(uint8_t num_chars);
void Move_cursor_right(uint8_t num_chars);
void LCD_underline_cursor_ON();
void LCD_Blank();
void LCD_print(const char *str);
void LCD_printInt(int value);
void LCD_printFloat(float value, int decimalPlaces);

#endif /* INC_SERIAL_LCD_H_ */

/*
 * Serial-LCD.c
 * Author: Marwen Maghrebi
 */
#include"Serial-LCD.h"

//wait for LCD to power up
void Delay_500ms(void)
{
  HAL_Delay(500);
}

//wait for the clear commande to settle
void Delay_10ms(void)
{
  HAL_Delay(10);
}

// Transmit data via UART
void LCD_UART_Transmit(uint8_t *pData, uint16_t Size) {
  HAL_UART_Transmit(&huart1, pData, Size, HAL_MAX_DELAY);
}

// Send command to the LCD
void LCD_sendCommand(uint8_t command) {
  LCD_UART_Transmit(&command, 1);
}

// Send data to the LCD
void LCD_sendData(uint8_t data) {
  LCD_UART_Transmit(&data, 1);
}

// Set cursor position on the LCD !!
void LCD_setCursor(uint8_t row, uint8_t col) {
  LCD_sendCommand(0xFE); // Command to set the cursor position
  LCD_sendCommand(0x80 + (row * 0x40) + col); // Calculate position based on row and column
}

// Scroll LCD content left
void LCD_scroll_left(uint8_t num_chars) {
  for (uint8_t i = 0; i < num_chars; i++) {
    LCD_sendCommand(0xFE); // Command to set the cursor position
    LCD_sendCommand(0x18); // Command to scroll one character to the left
    HAL_Delay(100);
  }
}

// Scroll LCD content right
void LCD_scroll_right(uint8_t num_chars) {
  for (uint8_t i = 0; i < num_chars; i++) {
    LCD_sendCommand(0xFE); // Command to set the cursor position
    LCD_sendCommand(0x1C); // Command to scroll one character to the right
    HAL_Delay(100);
  }
}

// Return cursor to the home position
void LCD_home() {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x00);
}

// Enable blinking cursor
void LCD_blinking_cursor_ON() {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x0D);
}

// Disable blinking cursor
void LCD_blinking_cursor_OFF() {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x0C);
}

// Clear the LCD screen
void LCD_clearScreen(void) {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x01);
}

// Move cursor left by num_chars characters
void Move_cursor_left(uint8_t num_chars) {
  for (uint8_t i = 0; i < num_chars; i++) {
    LCD_sendCommand(0xFE); // Command to clear the screen
    LCD_sendCommand(0x10);
    HAL_Delay(100);
  }
}

// Move cursor right by num_chars characters
void Move_cursor_right(uint8_t num_chars) {
  for (uint8_t i = 0; i < num_chars; i++) {
    LCD_sendCommand(0xFE); // Command to clear the screen
    LCD_sendCommand(0x14);
    HAL_Delay(100);
  }
}

// Enable underline cursor
void LCD_underline_cursor_ON() {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x0E);
}

// Turn off cursor and blinking
void LCD_Blank() {
  LCD_sendCommand(0xFE); // Command to clear the screen
  LCD_sendCommand(0x08);
}

// Print a string to the LCD
void LCD_print(const char *str) {
  while (*str) {
    LCD_sendData(*str++);
  }
}

// Print an integer to the LCD
void LCD_printInt(int value) {
  char buffer[20];  // Adjust the buffer size based on your needs
  sprintf(buffer, "%d", value);
  LCD_print(buffer);
}

// Print a floating-point number to the LCD with given decimal places
void LCD_printFloat(float value, int decimalPlaces) {
    char buffer[20];
    sprintf(buffer, "%.*f", decimalPlaces, value);
    // code to display the buffer on the LCD4
    LCD_print(buffer);

}

/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include"Serial-LCD.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  Delay_500ms();   // Wait for LCD to power up
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
    LCD_clearScreen();
    Delay_10ms();
    // Enable blinking cursor
    LCD_blinking_cursor_ON();
    Delay_10ms();

    // Move cursor left and right
    Move_cursor_left(50);
    Move_cursor_right(50);
    Delay_10ms();

    // Enable underline cursor
    LCD_underline_cursor_ON();
    Delay_10ms();

    // Disable blinking cursor
    LCD_blinking_cursor_OFF();
    Delay_10ms();

    // Clear the screen
    LCD_clearScreen();
    Delay_10ms();

    // Print messages with scrolling effect
    LCD_setCursor(0, 0);
    LCD_print("THE EMBEDDED THINGS!");
    LCD_setCursor(1, 0);
    LCD_print("FOR MORE VIDEOS");
    LCD_setCursor(2, 0);
    LCD_print("LIKE & SUBSCRIBE");
    LCD_setCursor(3, 0);
    LCD_print("THANK YOU ^_^");

    LCD_scroll_left(20);
    Delay_10ms();
    LCD_scroll_right(20);

    // Clear the screen
    LCD_clearScreen();
    Delay_10ms();

    // Print integer and float values
    int x = 200;
    float y = 10.23;
    LCD_setCursor(0, 0);
    LCD_print("INTEGER VAL: ");
    LCD_setCursor(0, 12);
    LCD_printInt(x);

    LCD_setCursor(1, 0);
    LCD_print("FLOAT VAL:");
    LCD_setCursor(1,12);
    LCD_printFloat(y, 2);

    Delay_10ms();
    }
  /* USER CODE END 3 */
}