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Slide 1
By Prof. G.R.Shinde
Slide 2
SPPU Prescription 310254 Programming Laboratory-III Teaching
Scheme: Examination Scheme: Practical: 4 Hrs/Week Practical: 50
Marks Oral: 50 Marks
Slide 3
FDP Objectives: To learn basics of Embedded Operating Systems
Programming Conceptual understanding of Beagle Bone black
(BBB)development board Programming on BBB
Slide 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.
Slide 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.
Slide 6
Assignment Group C Advance Technology Assignments (Any One) I.
Develop Robotics(stepper motor) Application using Beagle
Board.
Slide 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
Slide 8
Beagle Bone Black(BBB) Development Board contd..
Slide 9
Beagle Bone Black(BBB) Development Board Contd..
Slide 10
AM3358
Slide 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
Slide 12
Expansion Headers and GPIO
Slide 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
* 32 + N
Slide 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.
Slide 15
Light up the LED Connect Gnd and VCC to the external board Gnd:
Pin 1,2 of GPIO P9 Pin 25 VCC: Pin 5 of GPIO p9 Pin 26
Slide 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
Slide 17
Assignment 1 Develop an application using BeagleBone Black/ARM
Cortex A5 development board to simulate the operations of LIFT
Slide 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
Slide 19
Assignment 1 Contd..
Slide 20
Assignment 1:GPIO Pins Configuration
Slide 21
Assignment 1 contd..
Slide 22
Assignment 2 Develop an application using BeagleBone Black/ ARM
Cortex A5 development board to simulate the working of signal
lights.
Slide 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
Slide 24
Assignment 2:GPIO Pins Configuration
Slide 25
Assignment 2 contd..
Slide 26
Assignment 3 Develop Robotics(stepper motor) Application using
Beagle Board.
Slide 27
Assignment 3 contd..
Slide 28
Slide 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/exportecho out >
/sys/class/gpio/gpio31/direction echo 50 >
/sys/class/gpio/exportecho out >
/sys/class/gpio/gpio50/direction
Slide 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