Sandhya.np14 at 06:00, 26 October 2018

2018-10-26T06:00:25Z

PoojaMoolya: Created page with " {| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Welcome to the spoken tutorial on''' Assembly programming through Arduino.''' |- | 00:07 | In this tutorial, we wi..."

2018-10-25T12:02:47Z

Created page with " {| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Welcome to the spoken tutorial on''' Assembly programming through Arduino.''' |- | 00:07 | In this tutorial, we wi..."

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{| border=1
| '''Time'''
| '''Narration'''

|-
| 00:01
| Welcome to the spoken tutorial on''' Assembly programming through Arduino.'''

|-
| 00:07
| In this tutorial, we will learn to: Interface a''' seven-segment Display''' to''' Arduino board'''

|-
| 00:15
| Write an '''assembly program''' to display a digit on '''seven-segment display '''and

|-
| 00:21
| Display a digit on the '''seven segment display''' using '''7447 IC.'''

|-
| 00:28
| To follow this tutorial, you should have basic knowledge of : '''Electronics '''and

'''Assembly language'''

|-
| 00:36
| Refer to the '''Additional reading material '''link of this tutorial to know more about:

|-
| 00:42
| '''Arduino - Assembly code reference '''and '''Arduino ATmega328 Pin mapping.'''

|-
| 00:50
| To record this tutorial, I am using: '''Arduino UNO Board'''

|-
| 00:56
| And '''Ubuntu Linux '''operating system version 14.04

|-
|01:02
| We also require some external devices such as: '''Breadboard'''

|-
| 01:09
| '''Arduino UNO Board'''

|-
| 01:12
| '''Common Anode Seven-Segment Display'''

'''220 ohm Resistor'''

|-
| 01:18
| '''Decoder 7447 IC'''

And '''Jumper Wires'''

|-
| 01:25
| In this experiment we will use the '''common anode seven segment display.'''

|-
| 01:31
| Please refer to the basic level tutorial of this series to know more about '''seven segment display'''.

|-
| 01:38
| Let us see the connection circuit details.

|-
| 01:46
| The '''Dot pin''' of the '''Seven Segment Display''' is connected to the '''pin 13''' of '''Arduino'''.

|-
| 01:53
| Any one of the '''COM pins '''is connected to the +5Volts through a 220 '''ohm resistor'''.

|-
| 02:00
| Refer the '''pin mapping''' for '''Arduino '''and '''microcontroller.'''

|-
| 02:05
| This is the live setup of the connection.

|-
| 02:09
| Now we will write an '''assembly program''' to turn on the '''Dot LED''' on the '''seven segment display'''.

|-
| 02:17
| We need to install an '''assembler AVRA '''and '''AVRDUDE'''.

|-
| 02:23
| '''AVRA''' is an '''assembler''' that will generate a '''hex '''file.

|-
| 02:28
| '''AVRDUDE''' is used to upload any '''hex '''file to the '''Arduino board'''.

|-
| 02:34
| Open the '''terminal '''by pressing '''Ctrl + Alt + T''' keys together.

|-
|02:39
| To install '''avra''' and '''avrdude''', type '''sudo space apt hyphen get space install space avra space avrdude'''

|-
| 02:55
| Enter the '''administrative password''' if prompted and press '''Enter.'''

|-
| 03:01
| We can see the installation process has begun.

|-
| 03:05
| Press ''''Y'''' wherever there is a prompt during the installation, to confirm the configuration.

|-
| 03:11
| Installation will take some time to complete depending upon the internet speed.

|-
| 03:17
| We can see that the installation has been completed successfully.

Let us clear the screen.

|-
| 03:25
| Now let us connect the''' Arduino board''' to the computer.

|-
| 03:29
| To check the '''port''' number of '''Arduino''', I'll type '''ls space forward slash dev forward slash ttyACM asterisk'''

|-
| 03:41
| We can see the output as '''forward slash dev forward slash ttyACM0'''

|-
| 03:49
| Here''' ttyACM0''' represents the '''port''' number of '''Arduino'''.

|-
| 03:55
| You may get a different '''port''' number. Make a note of your '''port''' number.

|-
| 04:00
| Download '''m328Pdef.inc '''file from the '''Code files''' link of this tutorial.

|-
| 04:08
| We need to include this '''library''' file in the first line of the source code.

|-
| 04:13
| This allows the user to use '''Register''' and '''Bit name '''when writing '''assembly programs'''.

|-
| 04:20
| Let us write an '''assembly program '''and upload it to the '''microcontroller'''.

|-
| 04:25
| Open any text editor and type the following.

|-
| 04:29
| '''Semicolon''' represents '''comment statements'''.

|-
| 04:33
| These '''statements''' are ignored by the '''assembler''' and are not executed.

|-
| 04:38
| This line tells the '''assembler''' to include the '''m328Pdef.inc file.'''

|-
| 04:45
| We had downloaded this file earlier and in my computer this is the '''path'''.

|-
| 04:51
| Note that we have to specify the entire '''file path.'''

|-
| 04:55
| '''ldi''' stands for '''"load immediate" '''

|-
| 04:59
| This sets '''pin PB5''', that is digital '''pin 13''' as output.

|-
| 05:05
| It tells the '''assembler''' to take a working '''register r16''' and load a '''binary number '''into it.

|-
| 05:12
| This line tells the '''compiler''' to copy the contents of the '''register r16 '''into the '''DDRB register.'''

|-
| 05:20
| This sets all the pins to '''0 volts '''except '''pin PB5''', (i.e '''digital pin 13''') which is set to '''5 volts.'''

|-
| 05:30
| This line copies the same '''binary number''' from our storage '''register r17 '''to '''PortB.'''

|-
| 05:38
| '''Relative jump statement''' executes the '''program''' in an '''infinite loop.'''

|-
| 05:44
| The '''program''' has to just keep running, in order for the '''LED''' to remain '''ON'''.

|-
| 05:50
| Save the code as '''dot hyphen led.asm''' file in the '''home slash spoken slash Assembly''' folder.

|-
| 05:59
| This code is available in the '''Code files '''link of this tutorial, as well.

|-
| 06:04
| You can download and use it.

|-
| 06:07
| Switch to the '''terminal'''.

|-
| 06:10
| Go to the folder where '''dot hyphen led.asm '''file is saved.

|-
| 06:16
| Type, '''avra space dot hyphen led.asm''' and press '''Enter'''.

|-
| 06:24
| This will assemble the code and create a file '''dot hyphen led.hex'''.

|-
| 06:30
| Let us see the '''dot hyphen led.hex''' file that is generated in the same folder.

|-
| 06:37
| Next we need to upload the code to '''Arduino'''.

|-
| 06:41
| Switch back to the '''terminal'''.

|-
| 06:44
| For this, type '''avrdude space hyphen p space atmega328p space hyphen c arduino space hyphen b space 115200 space hyphen capital P space forward slash dev forward slash ttyACM0 space hyphen capital U space flash colon w colon dot hyphen led dot hex '''

|-
| 07:16
| Here''' ttyACM0''' represents the '''port''' number of '''Arduino'''.

|-
| 07:22
| '''dot hyphen led.hex''' is the file that is generated.

And press '''Enter'''.

|-
| 07:30
| Now you can see that the '''Dot LED''' in the '''seven segment''' is glowing.

|-
| 07:36
| Pause the tutorial and do the below assignment.

Modify the same code to turn off the '''Dot LED.'''

|-
| 07:44
| Next, we will display the digit 2 on the '''seven segment display'''.

|-
| 07:49
| To display '2', '''a,b,d,e,g segments '''should be high and the other '''LEDS''' should be low.

|-
| 07:58
| Connect '''Pins a, b, c, d, e, f '''and '''g''' of the '''seven-segment display''' to '''pins 2, 3, 4, 5, 6, 7''' and '''8''' of '''Arduino'''.

|-
| 08:10
| The two '''common pins''' are connected to positive 5Volts through '''resistors'''.

|-
| 08:17
| Let us see the live connection setup.

|-
| 08:21
| Let us see the source code for this program.

|-
| 08:24
| Open any text editor and type the following code.

|-
| 08:28
| As seen earlier, we should first configure the '''pins''' as '''output''' first.

|-
| 08:34
| Then make it as high or low according to our requirement.

|-
| 08:39
| These two lines makes the '''bits 2 to 7 '''on''' PORT D '''as output.

|-
| 08:45
| These two lines makes '''bit 0''' on '''PORT B '''as output.

|-
| 08:50
| These '''bits''' corresponds to the '''digital pins 2 to 8 '''on '''Arduino'''.

|-
| 08:56
| Here, we are making the '''pins''' as high or low corresponding to whatever number we want to display.

|-
| 09:04
| In our case, it is digit two.

|-
| 09:07
| Here, we are writing '''0100100''' to digital '''pins 2 '''to '''8 '''of '''Arduino'''.

|-
| 09:16
| This will make all the segments of '''SSD''' low, except''' c '''and '''g. '''

|-
| 09:22
| Let us save this as '''two.asm''' file.

|-
| 09:27
| Switch back to the '''terminal'''.

Let us clear the screen.

|-
| 09:33
| Type, '''avra space two.asm''' and press '''Enter'''.

|-
| 09:39
| To upload, press the up arrow to get the previous command.

|-
| 09:44
| Now change the filename as shown and press '''Enter'''.

|-
| 09:50
| Now you can see that the digit 2 in the '''seven segment''' is glowing.

|-
| 09:56
| Pause the tutorial and do the below assignment. Modify the above code to display any other digit from 0 to 9.

|-
| 10:06
| Next, we will use a '''Decoder '''to display the number 5 on the '''Seven Segment Display'''.

|-
| 10:12
| We are using '''7447 IC.'''

|-
| 10:16
| The '''a complement '''to''' f complement pins''' of the '''decoder''' connect to the '''a''' to '''f pins''' of '''Seven Segment Display'''.

|-
| 10:25
| '''Vcc''' and the '''Ground pins '''of the '''decoder''' are connected to '''positive 5Volts''' and the '''Ground pins '''of '''Arduino.'''

|-
| 10:33
| Connect the''' A, B,C,D pins''' of the '''Decoder''' to '''pins 2,3,4,5''' of '''Arduino.'''

|-
| 10:40
| Note that this '''decoder''' is compatible only with '''common anode seven segment display.'''

|-
| 10:47
| Let us see the live connection setup.

|-
| 10:51
| The''' input pins''' of the '''decoder''' are '''A,B,C''' and '''D'''.

|-
| 10:56
| '''A''' being the '''lowest significant bit (LSB) '''and '''D '''being the''' most significant bit (MSB)'''.

|-
| 11:02
| For example, the number 5 is visible on the display when the '''A,B,C '''and '''D inputs''' are as shown here.

|-
| 11:10
| Let us see the source code for this program.

|-
| 11:13
| Open any text editor and type the following code.

|-
| 11:17
| The first two lines makes the '''bits 2''' to '''5''' on '''PORT D''' as output.

|-
| 11:23
| This means we are making digital '''pins 2''' to '''5 '''in '''Arduino '''as '''output pins.'''

|-
| 11:29
| '''2 to 5 pins '''in the '''Arduino '''are connected to '''A, B, C, D pins '''of '''decoder.'''

|-
|11:36
| The next two lines are giving input of '''0101''' to decoder inputs.

|-
| 11:43
| This will then be decoded as 5 in the '''seven segment display'''.

|-
| 11:48
| Save it as '''decoder.asm''' file.

|-
| 11:52
| Switch back to the '''terminal'''.

|-
| 11:55
| Type, '''avra space decoder.asm''' and press '''Enter'''.

|-
| 12:02
| To upload, press the up arrow to get the previous command.

|-
| 12:07
| Now change the filename as shown and press '''Enter'''.

|-
| 12:13
| Now we can see that the digit five in the '''seven segment''' is glowing.

|-
| 12:19
| This brings us to the end of this tutorial. Let us summarize.

|-
|12:24
| In this tutorial, we learnt to: Interface a''' Seven-segment Display''' to''' Arduino board''' and

|-
| 12:31
| Write an '''assembly program''' to display a digit on '''seven-segment display.'''

|-
| 12:36
| And Display a digit on the '''seven segment display''' using '''7447 IC.'''

|-
|12:42
| The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

|-
| 12:50
| The''' Spoken Tutorial Project''' Team: conducts workshops and gives certificates.

For more details, please write to us.

|-
|12:58
|Please post your timed queries in this forum.

|-
| 13:02
| Spoken Tutorial project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.

|-
| 13:12
| This tutorial has been contributed by '''FOSSEE '''and''' Spoken Tutorial Project, IIT Bombay'''.

This is Priya from IIT Bombay signing off.

Thanks for joining.

|}

Arduino/C3/Assembly-programming-through-Arduino/English-timed - Revision history

Sandhya.np14 at 06:00, 26 October 2018

PoojaMoolya: Created page with " {| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Welcome to the spoken tutorial on''' Assembly programming through Arduino.''' |- | 00:07 | In this tutorial, we wi..."