PIC18F4550 Key Press Switch Detection By LED On OFF

PIC18F4550 Key Press Switch Detection By LED On OFF

PIC18F4550 LED On OFF Example

PIC18F4550  LED On OFF Example on IDE MPLAB 8.87 and C18 Compiler using Custom Development Board and Programmer.

This example of video simply On and OFF LED in a sequence one after another.

Bluetooth programming services, android bluetooth programming, bluetooth coding in java

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Bluetooth programming services

XE has been a leading one stop provider of hardware and software solutions for the embedded realtime systems market.XE together with its associate companies, possesses in-depth expertise and vast experience with real-time embedded systems and development tools, has succeeded in bringing to fore an ecosystem of highly integrated hardware and software solutions, tools and products ranging from Development Suites, Middleware Solutions, In Circuit Debuggers and Emulators, Connectivity Solutions, Protocol Analyzers and Hardware Subsystems to holistically support design, development and debugging processes in Embedded Systems.

Development Environment & Platforms
Android SDK/NDK, Dynamic C, AtmelStudio, Code Composer Studio,Linux-GCC,IAR Embedded Workbench, AVR Studio, Visual Studio,GitHub-Repo,Visual Basic 6.0,MPLAB,Arduino, Visual C++,Code Warrior.

Operating System
Linux Kernel, Windows MFC API, Android NDK,Real Time Operating Systems(RTOs), MicroC OS-II,U-boot,etc

Protocols
UART,USART,USB,CAN,Ethernet,DeviceNet,Modbus,TCP-IP,Bluetooth,Wifi,RF,Zigbee

Programming Expertise
C, C++, Java, Assembly, Arduino Sketch, Perl, RLX, Dynamic C,MATLAB Programming, Basic HTML,Basic C#,Basic ASP.net

Controller Family
ARM Cortex-M, ARM Cortex-A, ARM Cortex-R, ARM 7, ARM 9, ARM 11, MSP430, PIC, ATmel,AVR, ST, TI, Motorolla, Intel, Rasberry PI, Arduino, etc.

Bluetooth programming services, android bluetooth programming, bluetooth programming windows, bluetooth programming in python, bluetooth programming in java, j2me bluetooth application, bluetooth coding in java

Skype: xtint.technology

Email us at xtint.technologies@gmail.com

Tel -  +91-9173929262    

Website - Bluetooth Programming services

http://www.xtint.us/Bluetoothprogrammingservices.html

String Delimiter Program for Arduino Platform

An arduino sketch for parsing strings is required in general firmware.
Here it is a bsic structure of code is proposed to delimit the string of  bytes by Colon(:).

For, Example

Series of Data comming is in row of "12:123:23:45:8283:9474758:94848:28373:848:3834:89485:384:8484:9494949:9"

Then to retrieve or parse each individual value of data the code is proposed based on inbuilt functions used from arduino library.

Fig 1

Fig 2.

Code has been tested on Arduino Mega2560 Board. Fig 2. shows sample code with output.

If you want to have sketch  please write one mail to me at xtint.technologies@gmail.com.

http://www.xtint.us                                       https://www.facebook.com/Xtintt

xtint.technologies@gmail.com                     https://twitter.com/dhavalpateel

Skype: xtint.technology                                https://plus.google.com/u/0/+DhavalPatelFirmwareProgrammer    

+91-9173-929262                                         in.linkedin.com/in/dhavalnpatel/

PIC16F8722 write CRC 16 calculation in assembly language

I  have written asm code written to determine a polynomial CRC 16 8005 (x16+x15+x2+1) checksum.

Theres many scripts in C but i have written one in assembler for the Microchip  pic16f8722 

To test if it works i require the following hex string

313233343536373839

to produce the checksum FEE8.

Build in MPLAB 8.87 IDE, C18 Compiler, PIC16F8722, Assembly language
Anyone can contact me if you want this code.

Reach me at http://www.xtintt.com   or contact me at skype: xtint.technology or write me at info@xtintt.com

project link: Odesk.com 

Hardware Bitcoin Wallet

A minimal Bitcoin (see http://bitcoin.org/ ) wallet for embedded devices. The
wallet is responsible for parsing transactions, prompting the user and signing
transactions. In order to do this, the wallet also stores and manages private
keys, but it does not store anything else. The wallet is not aware of the
blockchain and communicates with a BitCoin client ("the host" from the point
of view of the code here) via. a point-to-point stream-based link.

Everything in the top-level source directory is self-contained and should be
platform-independent. The only platform-dependent file there is common.h,
which should be modified if porting to other platforms. hwinterface.h
describes what platform-dependent functions need to be implemented. The
Makefile in the top-level source directory will build platform-independent
unit tests. Those unit tests can make use of the test vectors in the
test_vectors/ subdirectory.

Everything in the avr/ subdirectory is specific to the 8 bit AVR platform. The
Makefile in avr/ will produce a (non-testing) binary suitable for programming
an 8 bit AVR device with.

Link: https://github.com/someone42/hardware-bitcoin-wallet

Tools for Building this:

OS: Ubuntu 12.04 

Compiler: AVRGCC

Programmer: AVRDude

Dev. Board: Arduino Mega or Arduino Uno.

How to Operate This Walllet:

1. You need to have desktop application.

2. Which will connected serially with virtual USB of PC with wallet and accepts commands.

3. Accordingly wallet will perform tasks.

Good Luck.

http://in.linkedin.com/in/dhavalnpatel/

Raspberry_PI_01_Level_Shifter_Circuit

• Hardware Connection between Raspberry PI and Arduino Uno level Shifter circuit for Serial Port UART interfacing with each other.

• TX pin second last from Arduino GPIO is connected with 1.6K ohm resister and resistor is connected with RX pin of raspberry pi at pin number 5, again, this pin 5 is connected with Ground GND using 3.3kOhmResistor as shown.

•  RX pin from Arduino board is directly connected with TX pin of Raspberry PI,there is no need to do voltage level shifting.