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Full Discussion: Very Basic Arduino Uno Board Testing
Top Forums Programming Very Basic Arduino Uno Board Testing Post 303042280 by Neo on Friday 20th of December 2019 05:51:34 AM
Old 12-20-2019
For completeness, here is the sketch I used for the 1602 demo above:


Code:
/*
  LCD Display with I2C Interface Demo
  lcd-i2c-demo.ino
  Use NewLiquidCrystal Library
  DroneBot Workshop 2018
  https://dronebotworkshop.com
  Modified by Neo December 2019
  https://www.unix.com
*/

// Include Wire Library for I2C
#include <Wire.h>
// Include NewLiquidCrystal Library for I2C
#include <LiquidCrystal_I2C.h>

// Define LCD pinout
const int en = 2, rw = 1, rs = 0, d4 = 4, d5 = 5, d6 = 6, d7 = 7, bl = 3;

// Define I2C Address - change if reqiuired
const int i2c_addr = 0x27;

LiquidCrystal_I2C lcd(i2c_addr, en, rw, rs, d4, d5, d6, d7, bl, POSITIVE);

void setup()
{

    // Set display type as 16 char, 2 rows
    lcd.begin(16, 2);

    // Print on first row
    lcd.setCursor(0, 0);
    lcd.print("Hello Neo!");

    // Wait 1 second
    delay(1000);

    // Print on second row
    lcd.setCursor(0, 1);
    lcd.print("How are you?");

    // Wait 8 seconds
    delay(8000);

    // Clear the display
    lcd.clear();
}

void loop()
{

    // Demo 1 - flash backlight
    lcd.setCursor(0, 0);
    lcd.print("Do you need unix");
    lcd.setCursor(0, 1);
    lcd.print("or linux help ??");

    delay(3000);
    lcd.clear();

    // Flash backlight 4 times
    for (int i = 0; i < 6; i++)
    {
        lcd.backlight();
        delay(250);
        lcd.noBacklight();
        delay(250);
    }

    // Turn backlight back on
    lcd.backlight();

    // Demo 2 - scroll
    lcd.setCursor(0, 0);
    lcd.print("Visit UNIX.com @");
    delay(4500);
    lcd.setCursor(0, 2);
    lcd.print("www.unix.com  ");
    delay(2500);
    // set the display to automatically scroll:
    lcd.autoscroll();
    // print from 0 to 9:
    for (int thisChar = 0; thisChar < 15; thisChar++)
    {
        lcd.print(' ');
        delay(500);
    }
    // turn off automatic scrolling
    lcd.noAutoscroll();

    // clear screen
    lcd.clear();

    //Delay
    delay(1000);
}

So fun... really... I had no idea playing with the Arduino could be so much fun.
Last edited by hicksd8; 12-20-2019 at 07:06 AM..
This User Gave Thanks to Neo For This Post:
hicksd8
 

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LEARN ABOUT DEBIAN

config::model::models::lcdd::hd44780

Config::Model::models::LCDd::hd44780(3pm)		User Contributed Perl Documentation		 Config::Model::models::LCDd::hd44780(3pm)

NAME

       Config::Model::models::LCDd::hd44780 - Configuration class LCDd::hd44780

VERSION

       version 2.021

DESCRIPTION

       Configuration classes used by Config::Model

       generated from LCDd.conf

Elements
   ConnectionType
       Select what type of connection. See documentation for types.Optional. Type uniline. default: '4bit'.

   Port
       Port where the LPT is. Usual value are: 0x278, 0x378 and 0x3BC. Optional. Type uniline. default: '0x378'.

   Device
       Device of the serial interface Optional. Type uniline. upstream_default: '/dev/lcd'.

   Speed
       Bitrate of the serial port (0 for interface default)Optional. Type uniline. default: '0'.

   Keypad
       If you have a keypad connected.	You may also need to configure the keypad layout further on in this file.Optional. Type uniline. default:
       'no'.

   Contrast
       Set the initial contrast (bwctusb and lcd2usb) Optional. Type integer. upstream_default: '500'.

   Brightness
       Set brightness of the backlight (lcd2usb only) Optional. Type integer. upstream_default: '0'.

   OffBrightness
       Optional. Type uniline. default: '0'.

   Backlight
       If you have a switchable backlight.Optional. Type uniline. default: 'no'.

   OutputPort
       If you have the additional output port ("bargraph") and you want to be able to control it with the lcdproc OUTPUT command. Optional. Type
       uniline. default: 'no'.

   Lastline
       Specifies if the last line is pixel addressable (yes) or it controls an underline effect (no). Optional. Type enum. choice: 'yes', 'no'.
       upstream_default: 'yes'.

   Size
       Specifies the size of the LCD.  In case of multiple combined displays, this should be the total size.Optional. Type uniline. default:
       '20x4'.

   vspan
       For multiple combined displays: how many lines does each display have.  Vspan=2,2 means both displays have 2 lines.Optional. Type uniline.
       default: '2,2'.

   ExtendedMode
       If you have an HD66712, a KS0073 or another 'almost HD44780-compatible', set this flag to get into extended mode (4-line linear).Optional.
       Type uniline. default: 'yes'.

   LineAddress
       In extended mode, on some controllers like the ST7036 (in 3 line mode) the next line in DDRAM won't start 0x20 higher. Optional. Type
       uniline. upstream_default: '0x20'.

   CharMap
       Character map to to map ISO-8859-1 to the LCD's character set

       (hd44780_koi8_r, hd44780_cp1251, hd44780_8859_5 and upd16314 are possible if compiled with additional charmaps)Optional. Type enum. choice:
       'hd44780_default', 'hd44780_euro', 'ea_ks0073', 'sed1278f_0b', 'hd44780_koi8_r', 'hd44780_cp1251', 'hd44780_8859_5', 'upd16314'.
       upstream_default: 'hd44780_default'.

   DelayMult
       If your display is slow and cannot keep up with the flow of data from LCDd, garbage can appear on the LCDd. Set this delay factor to 2 or 4
       to increase the delays. Default: 1.Optional. Type uniline. default: '2'.

   KeepAliveDisplay
       Some displays (e.g. vdr-wakeup) need a message from the driver to that it is still alive. When set to a value bigger then null the
       character in the upper left corner is updated every <KeepAliveDisplay> seconds. Default: 0.Optional. Type uniline. default: '0'.

   RefreshDisplay
       If you experience occasional garbage on your display you can use this option as workaround. If set to a value bigger than null it forces a
       full screen refresh <RefreshDiplay> seconds. Default: 0.Optional. Type uniline. default: '5'.

   DelayBus
       You can reduce the inserted delays by setting this to false.  On fast PCs it is possible your LCD does not respond correctly.  Default:
       true.Optional. Type uniline. default: 'true'.

   KeyMatrix_4_1
       If you have a keypad you can assign keystrings to the keys.  See documentation for used terms and how to wire it.  For example to give
       directly connected key 4 the string "Enter", use:
	 KeyDirect_4=Enter For matrix keys use the X and Y coordinates of the key:
	 KeyMatrix_1_3=Enter. Optional. Type uniline. default: 'Enter'.

   KeyMatrix_4_2
       Optional. Type uniline. default: 'Up'.

   KeyMatrix_4_3
       Optional. Type uniline. default: 'Down'.

   KeyMatrix_4_4
       Optional. Type uniline. default: 'Escape'.

SEE ALSO

       o   cme

perl v5.14.2							    2012-11-09				 Config::Model::models::LCDd::hd44780(3pm)
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