youssef-223
commented
1 year ago /*
- Author: Ahmed Hamed
- File Name: LCD.h
- Description: This is a source for LCD driver */
include "LCD.h"
include "GPIO.h"
include "common_macros.h"
/FUNCTIONS DEFINITIONS/
/*
- Definition: This function is used to initialise the LCD
- Author: Joe
-
Parameters: N/A */ void LCD_Init(void) {
SYSCTL_RCGCGPIO_R |=0x03; //passing the clock on the used ports (A,B) /*
- Identifying pins / GPIO_PORTB_DIR_R =0x0F; //first 4 pins used as data (D0->D3) LSBs GPIO_PORTA_DIR_R =0xEF; //first 4 pins used as data (D4->D7) MSBs and 5,6,7 -->RS,RW,E GPIO_PORTB_DEN_R =0x0F; //Digital enabled for used pins GPIO_PORTA_DEN_R =0xEF; //Digital enabled for used pins /
- Initialisation the LCD */ LCD_SendCommand(0x30); //wake up LCD_SendCommand(0x38); //2-lines 8-bit character LCD_SendCommand(0x01); //Clear screen LCD_SendCommand(0x02); //return Cursor come LCD_SendCommand(0x06); //Increment cursor LCD_SendCommand(0x0F); //Display on, cursor blinking
}
/*
- Definition: This function is used to send a command to LCD
- Author: Joe
- Parameters: Command code in Hex
-
@Command: this is the commmand code to be sent */ void LCD_SendCommand(uint8 Command) { GPIO_PORTA_DATA_R= 0; //RS=RW=E=0 uint8 left_Half_Comm; left_Half_Comm= (Command & 0xF0); //RS,RW,E uint8 right_Half_Comm; right_Half_Comm= (Command & 0x0F); //Data pins
GPIO_PORTA_DATA_R= left_Half_Comm; //command parameter divided GPIO_PORTB_DATA_R= right_Half_Comm; //command parameter divided
GPIO_PORTA_DATA_R |=0x80; //Enable on GPIO_PORTA_DATA_R &=0x7F; //Enable off
}
/*
- Definition: This function is used to display character on LCD
- Author: ------
- Parameters:
- @Data: this is the data("ASCII code") of the character to be displayed on the LCD */ void LCD_Displaycharacter(uint8 Data) {
}
/*
- Definition: This function is used to display string ("Array of characters") on LCD
- Author: ------
- Parameters:
- @Data: this is the data("pointer to a char") of the string to be displayed / void LCD_DisplayString(uint8 Data) {
}
/*
- Definition: This function is used to move the LCD cursor to the required position
- Author: ------
- Parameters:
- @Row: this is the row to write on
- @Col: this is the column to write on */ void LCD_MoveCursor(uint8 Row,uint8 Col) {
}
/*
- Definition: This function is used to clear the LCD
- Author: merna mamdouh
- Parameters: NA / void LCD_ClearScreen(void) { LCD_SendCommand(LCD_CLEAR_COMMAND) / call function LCD_SendCommand to clear lcd */
}
/*
- Definition: This function is used to Display intger on the LCD
- Author: merna mamdouh
- Parameters:
- @Data: this is the intger value to be displayed of the LCD / void LCD_DisplayInt(uint16 Data) { unit16 x = itoa(Data); / convert integer to string / LCD_DisplayString(& x); / call function LCD_DisplayString to write integer */
}
modify the LCD driver files and add the definition of the following functions: