View source for Arduino/C3/Interfacing-LCD-through-AVR-GCC-programming/English-timed

{| Border = 1
| '''Time'''
|'''Narration'''

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| 00:01
| Welcome to the''' Spoken Tutorial''' on '''Interfacing LCD through AVR-GCC programming.'''

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| 00:09
|In this tutorial, we will learn to:

interface a''' LCD''' to''' Arduino''' board,

write an '''AVR-GCC''' program to display a digit on '''LCD.'''

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| 00:22
|To follow this tutorial, you should have basic knowledge of :

electronics, 

'''C Programming '''and

'''AVR-GCC'''.

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| 00:34
| To record this tutorial, I am using:

'''Arduino UNO Board''',

'''Ubuntu Linux operating system''' version 14.04.

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| 00:47
| We also require some external devices such as:
'''Breadboard''',
'''LCD 16 by 2''',
'''Arduino UNO Board''',

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| 01:00
|'''Potentiometer''',
'''Jumper Wires '''and
'''Pin headers'''.

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| 01:07
|In this experiment, we will be using a '''16 by 2 LCD'''.
Please refer to the basic level tutorials of this series to know more about '''LCD'''.

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| 01:20
| Make use of the given table to connect the '''Arduino pin'''s to the '''LCD'''.

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| 01:26
|This table is available in the '''Additional reading material '''link of this tutorial. 

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| 01:32
| This is the '''circuit''' connection.

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| 01:35
| Connect one extreme lead of the '''potentiometer '''to '''pin 1''' of the '''LCD'''. 

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| 01:42
|The other extreme end is connected to '''pin 2''' of the '''LCD'''. 
The middle '''pin''' is connected to '''pin 3''' of the '''LCD'''. 

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| 01:53
| This is the live setup of the connection.

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| 01:58
| Now, we will write an '''AVR-GCC '''program to display the digit '''5''' on the '''LCD'''.

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| 02:05
| Open any '''text editor''' and type the following.

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|02:09
| '''avr/io.h''' contains all the basic '''libraries''' required to perform the input and output operations.

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| 02:19
|'''Util slash delay.h '''contains the '''libraries''' for the '''delay''' function.

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| 02:26
|'''stdlib.h''' contains the '''libraries '''for defining '''variable types '''and other commonly used '''functions'''.

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| 02:36
| '''ClearBit(x comma y)''' is equivalent to '''cbi(x comma y)'''. This is used to clear the '''yth bit '''of '''PORTx'''.

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| 02:47
|'''SetBit(x comma y)''' is equivalent to '''sbi(x comma y)'''. This is used to set the '''yth bit '''of '''PORTx'''.

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| 02:58
| All the numerical '''pins''' of the '''LCD''' are replaced with the names using hash '''define.''' 

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| 03:05
|This is done to make the program easier to understand.

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| 03:10
| The '''PulseEnableLine''' function is used to toggle the enable '''pin '''of the '''LCD'''.

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| 03:17
|'''SetBit''' will set to '''high '''and '''Clearbit''' will set to '''low, '''with a '''delay '''in between.

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|03:25
| The '''SendNibble''' function is used to send data of one '''nibble '''to the '''PORTB'''.

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| 03:33
| The '''SendByte''' function is used to send data of one '''byte '''to the '''PORTB'''.

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| 03:40
| The '''LCD underscore Cmd''' function is used to send a '''command '''to the '''LCD'''.

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| 03:47
| The '''LCD underscore Char''' function is used to send a '''character data '''to the '''LCD'''.

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| 03:55
| The '''LCD underscore Init''' function is used to initialize the '''LCD'''.

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| 04:02
| The '''LCD underscore Clear''' function is used to clear the '''display'''.

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| 04:09
| The '''LCD underscore Message''' function is used to send a '''string '''of '''data '''to be displayed on the '''LCD'''.

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|04:18
| The '''LCD underscore Integer''' function is used to send an '''integer data '''to the '''LCD'''.

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| 04:27
| This is the '''main''' function where we pass the value '''5''' to the '''display.'''

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| 04:33
| This code is available in the '''Code files '''link of this tutorial. You can download and use it.

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| 04:41
| I’ll save the code as '''lcd.c''' file in the '''Downloads''' folder.
Ensure that the '''Makefile''' is also present in the same folder.

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| 04:53
| Switch to the '''terminal'''.

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| 04:56
| Go to the folder where '''lcd.c '''file is saved.
Type: '''make space FNAME in capital = lcd '''and press '''Enter'''.

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| 05:12
| This '''command''' creates a '''.hex''' file and uploads it to '''Arduino'''.

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| 05:18
| Now, you can see that the digit '''5''' is displayed on the '''LCD'''.

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| 05:25
|This brings us to the end of this tutorial. Let us summarize.

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| 05:31
|In this tutorial, we learnt to:

interface a''' LCD''' to''' Arduino''' board and

write an '''AVR-GCC''' program to display a digit on '''LCD.'''

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| 05:43
| As an assignment-
Modify the above code to display any other digit from 0-9.

Modify the above code to build a '''counter''' which counts from 0 to 9.

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| 05:57
| The video at the following link summarizes the '''Spoken Tutorial''' project. Please download and watch it.

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| 06:05
|The''' Spoken Tutorial Project''' team:
conducts workshops and gives certificates. For more details, please write to us.

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| 06:15
| Please post your timed queries in this forum.

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| 06:19
|Spoken Tutorial project is funded by '''NMEICT, MHRD''', Government of India. More information on this mission is available at this link.

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| 06:29
| This tutorial has been contributed by '''FOSSEE''' and '''Spoken Tutorial Project, IIT Bombay'''. 
This is Priya from '''IIT Bombay''', signing off. Thanks for watching.

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