GCBASIC documentation
Liquid Crystal Display

Syntax:

    Put Line, Column, Character

Command Availability:

Available on all microcontrollers.

Explanation:

The Put command writes the given ASCII character code to a specific location on the LCD.

Line is the line number on the LCD display. A byte value from 0 to 255.

Column is the column number on the LCD display. A byte value from 0 to 255.

Character is the required ASCII code. A byte value from 0 to 255.

Example:

    'A scrolling star for GCBASIC

    'Misc Settings
    #define SCROLL_DELAY 250 ms

    'General hardware configuration
    #chip 16F877A, 20

    'LCD connection settings
    #define LCD_IO 8
    #define LCD_WIDTH 20                ;specified lcd width for clarity only.  20 is the default width
    #define LCD_DATA_PORT PORTC
    #define LCD_RS PORTD.0
    #define LCD_RW PORTD.1
    #define LCD_Enable PORTD.2

    'Main routine
    For StarPos = 0 To 16
        If StarPos = 0 Then
            Put 0, 16, 32
            Put 0, 0, 42          ' <<< the Put instruction -- writes ASCII 42, an asterisk
        Else
            Put 0, StarPos - 1, 32
            Put 0, StarPos, 42
        End If
        Wait SCROLL_DELAY
    Next

Key line: Put 0, 0, 42 — writes ASCII code 42 (an asterisk, *) at line 0, column 0, while the preceding Put 0, 16, 32 erases the star’s previous position by writing ASCII 32 (a space) there instead.

See Also:

Supported in <LCD.H>