Saturday, August 29, 2015
Online Python Tutor
Online Python Programming Tutor
First time I am seeing the very nice online tutor for Python http://www.pythontutor.com/visualize.html#mode=display
After writing the code , when you click on the Forward button , the flow of the statement can be seen in the program listing , at the same time variables values are listing in the right side.. its interesting .. Try this below
First time I am seeing the very nice online tutor for Python http://www.pythontutor.com/visualize.html#mode=display
After writing the code , when you click on the Forward button , the flow of the statement can be seen in the program listing , at the same time variables values are listing in the right side.. its interesting .. Try this below
Sunday, August 23, 2015
Friday, August 21, 2015
Why you need to compile your C program in GCC
GCC Compiler:
10 reason why we need to move to GCC -
http://stackoverflow.com/questions/1313702/gcc-compiler-advantage
If you need to compile C program, always go for GCC. You can find GCC online documentation in the below link http://naveendavisv.blogspot.com/2008/09/gcc-online-documentation.html
GCC and cross compilation
What is cross compilation - https://en.wikipedia.org/wiki/Cross_compiler
how to use GCC as cross compiler - http://wiki.osdev.org/GCC_Cross-Compiler
How to use GCC to compile ARM code :
https://launchpad.net/gcc-arm-embedded
http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html
http://askubuntu.com/questions/487082/compiling-c-code-for-arm-processor-on-ubuntu-12-04
How to use GCC for PIC :
http://hackaday.com/2010/11/03/how-to-program-pics-using-linux/
10 reason why we need to move to GCC -
http://stackoverflow.com/questions/1313702/gcc-compiler-advantage
If you need to compile C program, always go for GCC. You can find GCC online documentation in the below link http://naveendavisv.blogspot.com/2008/09/gcc-online-documentation.html
GCC and cross compilation
What is cross compilation - https://en.wikipedia.org/wiki/Cross_compiler
how to use GCC as cross compiler - http://wiki.osdev.org/GCC_Cross-Compiler
How to use GCC to compile ARM code :
https://launchpad.net/gcc-arm-embedded
http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html
http://askubuntu.com/questions/487082/compiling-c-code-for-arm-processor-on-ubuntu-12-04
How to use GCC for PIC :
http://hackaday.com/2010/11/03/how-to-program-pics-using-linux/
Thursday, August 20, 2015
Why linux ?
Why Linux ?
More than an operating system, Linux is a nice learning platform which takes you through some challenges always..
And there is great community loves GNU
why Linux, reasons is explained nicely in this website http://www.whylinuxisbetter.net/
Linux commands - http://www.tutorialspoint.com/listtutorial/Linux-Shell-commands/2596
Linux Concepts - http://www.tutorialspoint.com/listtutorials/linux/basic-concepts/1
Get Ubuntu Linux here - http://www.ubuntu.com/download
More than an operating system, Linux is a nice learning platform which takes you through some challenges always..
And there is great community loves GNU
why Linux, reasons is explained nicely in this website http://www.whylinuxisbetter.net/
Linux commands - http://www.tutorialspoint.com/listtutorial/Linux-Shell-commands/2596
Linux Concepts - http://www.tutorialspoint.com/listtutorials/linux/basic-concepts/1
Get Ubuntu Linux here - http://www.ubuntu.com/download
Friday, August 14, 2015
Angular.js + Node.js+ Express.js
Experimenting Angular.js with Node
I was actually trying to install angular.js seed on Node.js that I found in the below link
http://briantford.com/blog/angular-express
Angularjs tutorial - http://www.w3schools.com/angular/
codeacademy angularjs - https://www.codeacademy.com/courses/learn-angularjs
succeeded to the run application - node app.js .. after copying the zip file to the folder .
I got some errors while running the app.js like most middleware like "errorhandler is not bundled to the express". I just commented out the error handler statements and ran the app.
http://localhost:3000/
I was actually trying to install angular.js seed on Node.js that I found in the below link
http://briantford.com/blog/angular-express
Angularjs tutorial - http://www.w3schools.com/angular/
codeacademy angularjs - https://www.codeacademy.com/courses/learn-angularjs
succeeded to the run application - node app.js .. after copying the zip file to the folder .
I got some errors while running the app.js like most middleware like "errorhandler is not bundled to the express". I just commented out the error handler statements and ran the app.
http://localhost:3000/
Wednesday, August 12, 2015
How to start with Texas lanuchpad
TEXAS LAUNCHPAD
Electrical,electronics and computer science engineering students should program something with launchpad before you pass out :-)
Theye are lot of tutorials available and it's very cheap. It's worth of spending money for it.
http://www.ti.com/ww/en/launchpad/launchpad.html?DCMP=rtos&HQS=ep-sdo-rtos-pr-lp-launchpad-en
http://hackaday.com/2010/08/11/how-to-launchpad-programming-with-linux/
Electrical,electronics and computer science engineering students should program something with launchpad before you pass out :-)
Theye are lot of tutorials available and it's very cheap. It's worth of spending money for it.
http://www.ti.com/ww/en/launchpad/launchpad.html?DCMP=rtos&HQS=ep-sdo-rtos-pr-lp-launchpad-en
http://hackaday.com/2010/08/11/how-to-launchpad-programming-with-linux/
Sunday, August 9, 2015
How to start web application with docker for free
Below is good article that we can flow to create and run a Web application using docker.
https://blog.codeship.com/running-mean-web-application-docker-containers-aws/
https://blog.codeship.com/running-mean-web-application-docker-containers-aws/
Friday, August 7, 2015
How to use Docker ?
First of all , what is docker ?... I came across docker when I was searching for code editor and how to compile C code form web applications.
http://qnimate.com/create-an-frontend-editor-with-code-highlighting-and-execution/
Docker - https://www.docker.com/
Docker is an open-source project that automates the deployment of applications inside software containers, by providing an additional layer of abstraction and automation of operating-system-level virtualization on Linux. https://en.wikipedia.org/wiki/Docker_(software)
I actually want to run the code in a virtual machine ( for this idea http://naveendavisv.blogspot.com/2015/08/thinking-to-build-microcontroller.html) and show the output in a text area, even though I don't need the full output, but if the code can be checked for syntax error, I am much happy...
http://qnimate.com/create-an-frontend-editor-with-code-highlighting-and-execution/
Docker - https://www.docker.com/
Docker is an open-source project that automates the deployment of applications inside software containers, by providing an additional layer of abstraction and automation of operating-system-level virtualization on Linux. https://en.wikipedia.org/wiki/Docker_(software)
I actually want to run the code in a virtual machine ( for this idea http://naveendavisv.blogspot.com/2015/08/thinking-to-build-microcontroller.html) and show the output in a text area, even though I don't need the full output, but if the code can be checked for syntax error, I am much happy...
Thursday, August 6, 2015
10 websites that a computer science student should read daily
You can find the list of websites for computer science students here blow link
http://www.quora.com/What-are-the-top-10-websites-computer-science-students-must-visit
http://www.quora.com/What-are-the-top-10-websites-computer-science-students-must-visit
Wednesday, August 5, 2015
Thinking to build Microcontroller Programming practice website
Started looking for the web technology to build a website for microcontroller programming practice.... kind of minimal functionalities available in codeacademy.com
I am not sure whether I can start with node.js for this.
I have seen http://codemirror.net/ and ace-editor as web code editor plugins
http://techslides.com/codemirror-versus-ace-editor
looking for advise from web-programmers
Based on the code left code editor area in C or Python, the LED connected to port should blink based on program written. The user will have the ability to write 3 or 4 lines code in Micro controller programming in each page in the editor , so that he/she will get a hands-on experience on coding as well real time experience on how LED as connected and architecture of microcontrollers
Page prototype:
I am not sure whether I can start with node.js for this.
I have seen http://codemirror.net/ and ace-editor as web code editor plugins
http://techslides.com/codemirror-versus-ace-editor
looking for advise from web-programmers
Based on the code left code editor area in C or Python, the LED connected to port should blink based on program written. The user will have the ability to write 3 or 4 lines code in Micro controller programming in each page in the editor , so that he/she will get a hands-on experience on coding as well real time experience on how LED as connected and architecture of microcontrollers
Page prototype:
Sunday, August 2, 2015
sample routing programs with Expressjs in Node
There are some difference between express3.X and 4X in usage of app.router and bodyParser
how to avoid below errors in nodejs and expressjs
Most middleware like bodyparser is no longer bundled with Express
means you have not installed bodyparser , you have to install it as below
npm install body-parser
use this site for usage for body-Parser
https://www.npmjs.com/package/body-parser
Difference between express3.X and 4.X
https://scotch.io/bar-talk/expressjs-4-0-new-features-and-upgrading-from-3-0
App.js
ignore the commented lines in the below code
var express = require('express');
var path = require('path');
var http = require('http');
var app = express();
var bodyParser = require('body-parser');
var path = require('path');
var http = require('http');
var app = express();
var bodyParser = require('body-parser');
/*var urlencodedParser = bodyParser.urlencoded({ extended: false });*/
app.use(bodyParser.urlencoded());
app.use(bodyParser.urlencoded());
app.set('port',process.env.PORT || 3000);
app.set('views',__dirname + '/views');
app.set('view engine','jade');
app.set('views',__dirname + '/views');
app.set('view engine','jade');
/*app.use(app.router);*/
/*var people = express.Router();*/
/*var people = express.Router();*/
app.use(express.static(path.join(__dirname,'public')));
/*app.get('/about',function(req,res){
res.send("about naveen");
});*/
app.post('/user',function(req,res){
res.send("requested user name" + req.body.name);
});
res.send("requested user name" + req.body.name);
});
/*app.get('/user/:username',function(req,res){
res.send(" "+ req.params.username + " profile");
});*/
res.send(" "+ req.params.username + " profile");
});*/
/*app.get('/',function(req,res){
res.send("hello......");
});*/
//app.use(express.static(path.join(__dirname, 'public')));
res.send("hello......");
});*/
//app.use(express.static(path.join(__dirname, 'public')));
var server = http.createServer(app).listen(app.get('port'),function(){
console.log('Express server listening on port' + app.get('port'));
});
console.log('Express server listening on port' + app.get('port'));
});
place the file index.html in the Public folder
then start node app.js