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

How to implement tr- 069 protocol, Description - The TR-069 CPE WAN Managem...

Description - The TR-069 CPE WAN Management Protocol (CWMP) is a protocol that was created by the Broadband Forum (formally the DSL Forum) which sets out a common method for CPE de

Largest clique, find largest clique present in graph

find largest clique present in graph

C program for add, C Program for ADD,SUB,MUL,DIV,REM void main() { ...

C Program for ADD,SUB,MUL,DIV,REM void main() {   int a,b,c,ch=0;           clrscr();           while(ch           { printf(" \n\n 1:- For To Add\n 2:- For

I need app design team wanted to new check-in app, New App Production compa...

New App Production company is seeking an organized and highly accomplished design team to prepare the first (and potentially more) of my companies' App concepts, intended completel

Evaluate the credit worthiness of a client, Write a C++ program that can be...

Write a C++ program that can be used to evaluate the credit worthiness of a client. The program reads the credit limit and the price and quantity of the item to be purchased by the

Mathematics, C Coding to find the area under the curve y = f(x) between x =...

C Coding to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can be found

Area under the curve, Write a program to find the area under the curve y = ...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Explain the process of using the constructor, Using the Constructor The...

Using the Constructor There are basically three ways of creating and initializing the object. The first way to call the constructor is explicitly as :

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