When using PIC microcontroller, the mikroC compiler has a built-in LCD library that supports the commands to carry out LCD initialization. The library consists of a number of functions to control LCDs with 4-bit data interface. The main program first clears the LCD screen and then displays “LCD INTERFACE” in the first row of LCD.
What is the use of LCD_init() and LCD_clear() functions?
Lcd_Init () : This function will initialize the LCD Module connected to the following defined pins. These connections must be defined for the proper working of LCD. Lcd_Clear () : To clear the display. Lcd_Set_Cursor (int row, int column) : This function is used to set row and column of the cursor on the LCD screen.
What is a PIC project?
PIC Projects based on flash pic microcontrollers. These pic projects use Flash based microcontrollers so you can re-program them in circuit using ICSP. You can re-program most PIC Flash microcontrollers up to 100,000 times!
Why can’t I see anything on the LCD after programming?
Therefore, if you are not able to see anything on LCD after programming, the maximum changes are that you need to adjust contrast with the variable resistor. This contrast register makes adjust to the voltage applied on the VEE pin. In this tutorial, we will use two pic microcontroller compilers for programming:
Can Hihi-Tech C control an LCD display?
Hi-Tech C has no built in LCD libraries so we require the hardware knowledge of LCD to control it. Commonly used LCD Displays uses HD44780 compliant controllers. This is the pin diagram of a 16×2 Character LCD display.
What is the use of LCD_putc function?
lcd_putc(c) This function will display c on the next cursor position of the LCD. You can print strings and characters using this function. You can also use following backslash character constants for sending different commands to LCD.
What are the data lines between the microcontroller and the LCD display?
There are 7 data lines between the microcontroller and the LCD display which are: RS, R/W, E, D4, D5, D6 and D7. The following PIC16F84A LCD example shows how to connect the LCD screen with the microcontroller and how to display characters using CCS C compiler.
How does LCD display read and write data?
Data Strobe is given using E (Enable) input of the LCD. When the E (Enable) is HIGH, LCD takes it as valid data or command. The input signal R/W (Read or Write) determines whether data is written to or read from the LCD.
