1. Programming Lab III AssignmentsBy
Prof. G.R.Shinde

2. SPPU Prescription 310254 Programming Laboratory-III
Teaching Scheme: Examination Scheme:
Practical: 4 Hrs/Week Practical: 50 Marks Oral: 50 Marks

3. FDP Objectives:
To learn basics of Embedded Operating Systems Programming
Conceptual understanding of Beagle Bone black (BBB)development board
Programming on BBB

4. Assignments Group A (Mandatory)
I. Develop an application using BeagleBone Black/ARM Cortex A5 development board to simulate the operations of LIFT. II. Develop an application using Beeglebone Black/ ARM Cortex A5 development board to simulate the working of signal lights.

5. Assignments Group B
Any Six Assignments, All assignments to be covered in the Batch
I. Write an application to and demonstrate the change in BeagleBoard/ARM Cortex A5 /Microprocessor /CPU frequency or square wave of programmable frequency.
II. Develop a network based application by setting IP address on BeagleBoard/ARM Cortex A5.
II. Implement a Parallel Quick Sort algorithm using NVIDIA GPU or equivalent ARM board.
III. Implement a Parallel ODD-Even Sort algorithm using GPU or ARM equivalent.

6. Assignment Group C
Advance Technology Assignments (Any One) I. Develop Robotics(stepper motor) Application using Beagle Board.

7. Beagle Bone Black(BBB) Development Board
Produced by Texas Instruments in association with DigiKey and Newark element14
The BeagleBone is a development board with a Sitara ARM Cortex-A8 processor
The processor clock to 1 GHz, and it adds HDMI and 4 GB of eMMC flash memory
RAM 512 MB
Supported OS: Linux, Android, Debian, windows Embedded CE, Threadx, QNX

8. Beagle Bone Black(BBB) Development Board contd..

9. Beagle Bone Black(BBB) Development Board Contd..

10. AM3358

11. Expansion Headers
The expansion headers on the beagleBone Black are comprised of two 46 pin connectors.
P8 and P9
All signals on the expansion headers are 3.3V

12. Expansion Headers and GPIO

13. GPIO Programming
The pins on the expansion header have multiple functions
You have to identify the pin number which you would like to use as a GPIO
Any GPIO you come across would be referenced as GPIOM_N. Identify M,N.
Use the formula below to find the corresponding reference number in the kernel:
Reference number = M * N

14. GPIO Programming contd..
For example, if you would like to use pin 23 on P8 expansion header
Pin 23 is GPIO1_4
Reference number = M * 32 + N
Hence, pin 23 would be referenced num
RN= 1 *32 + 4
gpio 36 in the kernel.

15. Light up the LED Connect Gnd and VCC to the external board
Gnd: Pin 1,2 of GPIO P Pin 25
VCC: Pin 5 of GPIO p Pin 26

16. Light up the LED contd..
Minicom : interfacing text-based modem control and terminal emulation program
Export the pin
echo 36 > /sys/class/gpio/export
we need to configure it in the output mode. Write the following commands in your terminal
echo out > /sys/class/gpio/gpio36/direction
Now, let us toggle the LED by typing the following commands in terminal (First one is for turning ON and latter for OFF):
echo 1 > /sys/class/gpio/gpio36/value
echo 0 > /sys/class/gpio/gpio36/value

17. Assignment 1
Develop an application using BeagleBone Black/ARM Cortex A5 development board to simulate the operations of LIFT

18. Assignment 1 Contd.. Program is written in ‘CPP’
Every GPIO pin is considered as a file
Simple file operations used fopen, fread, fwrite, fflush, fclose…
Compile the code using g++
The code will execute showing current position of the lift
Pressing a button ‘external’ OR ‘internal’ to the lift will take the lift to respective floor
Current position will be displayed inside / outside the lift

19. Assignment 1 Contd..

20. Assignment 1:GPIO Pins Configuration

21. Assignment 1 contd..

22. Assignment 2 Develop an application using BeagleBone Black/
ARM Cortex A5 development board to simulate the
working of signal lights.

23. Assignment 2 contd.. Program is written in ‘C’
Every GPIO pin is considered as a file
Simple file operations used fopen, fread, fwrite, fflush, fclose…
Compile the code using gcc
The code will execute showing current position of the
Traffic allowed e.g. side 2 & 4 with ‘left’ allowed (Green)
After the preset time is elapsed ‘Yellow’ will flicker
The sides will be changed

24. Assignment 2:GPIO Pins Configuration

25. Assignment 2 contd..

26. Assignment 3
Develop Robotics(stepper motor) Application using Beagle Board.

27. Assignment 3 contd..

28. Assignment 3 contd..

29. Assignment 3:GPIO Pins Configuration
echo 30 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio30/direction
echo 60 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio60/direction
echo 31 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio31/direction
echo 50 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio50/direction

30. Assignment 3 contd.. Program is written in ‘C’
Every GPIO pin is considered as a file
Simple file operations used fopen, fread, fwrite, fflush, fclose…
Compile the code using gcc
The code will execute showing stepper motor revolution in anticlockwise or clockwise direction.
Stepper motor executing in full step mode

31. Assignment 3 contd..

32. Thank you for your kind attention !!