Playback pattern sequences, C/C++ Programming

Assignment Help:

This task involves creating a new class(es) that will allow the system to playback pattern sequences using the Neo  Freerunner  hardware. The first thing to note is that the vibrator is treated similarly to how the phone views LEDs, meaning that the intensity of the vibration is determined by a number from 0 to 255 (brightness). Hardware on the Neo Freerunner can be read or written to by accessing special system files. The 'files' to access this hardware can be found in (these are easy-access symlinks): 

/sys/class/leds/

In this directory you will find several special files  that can  manipulate  its physical functionality (Linux: Device Files). An example of how to "Pulse" the Neo vibrator can be found inside the function SetVibrateNow within open source file:

/devel/qt-extended-4.4.2/devices/neo/src/plugins/phonevendors/neo/vendor_neo.cpp

The sample pattern files provided use the format of specifying the strength (0-255) and duration (milliseconds) of a single 'note' on each line of the file. For example, a file with:

150,1000
0,500

This means that the hardware should activate at a strength of 150 for 1sec, followed by nothing for 0.5secs. In the case of the LEDs, as there are three LEDs - the pattern file will be formatted as follows:


1,0,1,255,1000
1,0,0,255,500
1,1,1,0,1000 or 0,0,0,x,1000 (x can be anything)
1,1,0,255,1000

This means that, blue and red leds activate for 1sec, blue remains on for 0.5sec, no activity for 1sec, followed by purple (blue/orange) led for 1 second.

This module should only exist in PhoneBookDialog and can only be accessed by other classes using signal and slot connections made in PhoneBookDialog. 


Related Discussions:- Playback pattern sequences

Explain the #undef directive, The #undef Directive This directive undef...

The #undef Directive This directive undefines a previously explained macro. For, example the following will give an error since PI is undefined.                 #define PI 3

How to creat a file herachy for stream class, Ask questionhow to creat a fi...

Ask questionhow to creat a file herachy for stream class #Minimum 100 words accepted#

Define types of storage classes in c language, Define Types of storage clas...

Define Types of storage classes in C language? There are four storage classes in C language: 1. Automatic storage class. 2. External storage class. 3. Register storage cla

Boardcoloring, In this problem you are given a board in which some of the e...

In this problem you are given a board in which some of the elements are placed as shown in diagram below. Each element represents a color. Fill the other elements in the board, suc

Calculation, write a program to calculate the cuboid

write a program to calculate the cuboid

Looping, Write a programme to display the patern.. A A B A C B A B C...

Write a programme to display the patern.. A A B A C B A B C A B A A

Constructor , What is constructor or ctor? need help

What is constructor or ctor? need help

Explain the macros, Explain the Macros? Preprocessor' is a translation ...

Explain the Macros? Preprocessor' is a translation stage that is applied to your source code before the compiler proper gets its hands on it. Usually the preprocessor performs

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd