_delay_ms(2) // Delay for cursor to return at zero position WriteCommandToLCD(0x01) // Clear the screen WriteDataToLCD(*s++) // print first character on LCD WriteCommandToLCD(0x06) //entry mode, set increment WriteCommandToLCD(0x0c) //display on,cursor off,blink off LCD_Data_Bus = LCDChar // Write Data value on data bus LCD_Data_Bus = Command // Write Command value on data bus Void WriteCommandToLCD(unsigned char Command) _delay_us(E_Delay) // so that LCD can latch the WriteStringToLCD(msg) // Write Hello World on LCD #define LCD_Data_Bus PORTB // Data bus for LCD _delay_us() functions are used in the code This must be defined, if _delay_ms() or & LVP_OFF & CPD_OFF & WRT_OFF & DEBUG_OFF) _CONFIG( FOSC_HS & WDTE_OFF & PWRTE_ON & CP_OFF & BOREN_ON * Purpose : Main file for using LCD with PIC16F628A in 8bit mode. I have used MPLAB v8.85 with the HI-TECH C v9.83 compiler to creating this project “16*2 Character LCD Interfacing with PIC Microcontroller in 8-bit Mode”.ġ.) Display “” on 16×2 alphanumeric LCD: In this blog post, I have written two codes one to display “” and second to display charging a “Hello world!”. So let us see code that explains the LCD 8-bit interfacing with PIC Microcontroller and how to display characters on 16X2 LCD using PIC microcontroller. COMMANDįor switching on LCD, blinking the cursor.įorce cursor to the beginning of the first lineįorce cursor to the beginning of the second line You can interface 16×2 LCD in two-mode 8bit and 4bit. Some useful commands for 16×2 Alphanumeric LCD:īelow I am mentioning few commands related to the 16×2 LCD. A high to the low pulse of about 450ns pulse is given to this pin.ĭ0-D7 Data pins for giving data(normal data like numbers characters or command data) which is meant to be displayedīack-light of the LCD which should be connected to Vccīack-light of LCD which should be connected to ground. Reading and writing data to the LCD for reading the data R/W pin should be high (R/W=1) to write the data to LCD R/W pin should be low (R/W=0).Įnable pin is for starting or enabling the module. During the initializing sequence and other commands, this pin should low. RS is the register select pin used to write display data to the LCD (characters), this pin has to be high when writing the data to the LCD. Used for adjusting the contrast commonly attached to the potentiometer. There are 16 pins in the LCD module, the pin configuration us given below, Pin Configuration of 16*2 Alphanumeric LCD:Ī 16×2 Liquid Crystal Display has two rows and each row contains 16 columns.
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