embedded Linux

by Dost Muhammad Shah on Electronics, Embedded LInux, Microcontrollers

Raspberry pi Zero launched , SBC priced at $5

This is awesome. The only thing I miss is the LAN interface but at $5 its still amazing. It has Broadcom BCM2835 processor and that also 40% faster than the pi 1 with 512 MB of Ram.

Today, I’m pleased to be able to announce the immediate availability of Raspberry Pi Zero, made in Wales and priced at just $5. Zero is a full-fledged member of the Raspberry Pi family, featuring:

  • A Broadcom BCM2835 application processor
    • 1GHz ARM11 core (40% faster than Raspberry Pi 1)
  • 512MB of LPDDR2 SDRAM
  • A micro-SD card slot
  • A mini-HDMI socket for 1080p60 video output
  • Micro-USB sockets for data and power
  • An unpopulated 40-pin GPIO header
    • Identical pinout to Model A+/B+/2B
  • An unpopulated composite video header
  • Our smallest ever form factor, at 65mm x 30mm x 5mm

Raspberry Pi Zero runs Raspbian and all your favourite applications, including Scratch, Minecraft and Sonic Pi.

RaspberryPi BLOG

 
by Shoaib Ahmed on Embedded LInux

How to change ip address in linux

I wrote this draft quite ago . Just stumbled upon on it in the drafts section, may this would help someone

Change IP address

You can change ip address using ifconfig command itself. To set IP address 192.168.1.5, enter command:

# ifconfig eth0 192.168.1.5 netmask 255.255.255.0 up
# ifconfig eth0

To make permanent changes to IP address you need to edit configuration file according to your Linux distribution.

Here are some detailed posts:

 
by Dost Muhammad Shah on Electronics, Embedded LInux

Raspberry Pi 2 Model B

The Raspberry Pi Foundation is likely to provoke a global geekgasm today with the surprise release of the Raspberry Pi 2 Model B: a turbocharged version of the B+ boasting a new Broadcom BCM2836 900MHz quad-core system-on-chip with 1GB of RAM – all of which will drive performance “at least 6x” that of the B+.

At its heart, though, is the BCM2836 SoC, which according to Upton has been in development for a couple of years. It’s “very, very similar” to its predecessor – the BCM2835 – but with four cores and “a little tweak to allow us to address the gig of RAM”

The BCM2835, as used in previous Pis, is a Broadcom GPU – the VideoCore IV – with a single 700MHz ARM1176JZF-S application core glued in to run software. The system-on-chip is shipped with 256MB or 512MB of RAM stacked on top.

The new BCM2836, on the other hand, contains four ARMv7 Cortex-A7 cores with 1GB of RAM.

The Raspberry Pi 2 Model B  is the latest version of the Raspberry Pi, a tiny credit card size computer. Just add a keyboard, mouse, display,power supply, micro SD card with installed Linux Distribution and you’ll have a fully fledged computer that can run applications from word processors and spreadsheets to games.

What’s the same:

  • Same form factor as the model B+ (your enclosures and daughter boards should still fit).
  • Same full size HDMI port
  • Same 10/100 Ethernet port
  • Same CSI camera port and DSI display ports
  • Same micro USB power supply connection

What has changed:

  • A new turbocharged  Broadcom BCM2836 900MHz quad-core system-on-chip with performance at least 6x that of the B+.
  • 1GB of RAM

via theregister.co.uk

 
by Shoaib Ahmed on Electronics, Embedded LInux

Asterisk for Banana Pi R1 (FreePBX Image included)

After doing the FreePBX Asterisk Image for Banana Pi, I was asked by SINOVOIP (Banana Pi Manufacturer) to do an Asterisk Image for their router board, i.e. the Banana Pi R1. SINOVOIP has been very kind to send me a complimentary BPi-R1 for testing and developing.

It took me some time to get this done, but the image is finally ready. This image differs from my earlier Banana Pi Asterisk image in that, the earlier image was created by simply replacing the rootfs of a Raspbian based BPi Image, with RasPBX Image’s rootfs. However, this time I have actually been able to compile Asterisk on the latest Bananian Image for R1. This means that you can now have a powerful, complete and rather flexible Asterisk 11 (upgradable to 12!) desktop system with FreePBX, running on the BPi-R1. Further, Bananian offers lightening fast boot and load times with remarkable performance. (You can compare the speed with my earlier RasPBX based Image to see for yourself.)

The image comes preloaded with Asterisk 11, along with most of the standard FreePBX modules. Upgrading to Asterisk 12 should be pretty easy.

Credentials:

  • Login: root
  • Password: root
  • FreePBX Username: asteriskuser
  • FreePBX Password: pi

Note: I have tested this image (before and after upgrading to Asterisk 12) successfully with a BPi-R1 for SIP (using Android devices running Zoiper), along with video calling. Please be aware that 2 extensions (made during testing) already exist in the image and can be removed (I somehow forgot to delete them ;)). Also note that video calling is disabled by default and needs to be enabled from the pbx settings.

DOWNLOAD :

Pay 22.50 USD  (this will support our work)




Download both files and then un-rar using WinRar or any other appropriate program

 
by Shoaib Ahmed on Electronics, Embedded LInux

Asterix for Banana Pi (FreePBX img file for Banana Pi included)

What is Asterix?

Asterisk is a software implementation of a telephone private branch exchange (PBX); it was created in 1999 by Mark Spencer of Digium. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services, such as the public switched telephone network (PSTN) and Voice over Internet Protocol (VoIP) services. Its name comes from the asterisk symbol, *. [Source: Wikipedia]

Asterisk is like a box of Legos for people who want to create communications applications. It includes all the building blocks needed to create a PBX, an IVR system, a conference bridge and virtually any other communications app you can imagine. [Source: Official Asterix Website]

What is Banana Pi?

Banana Pi is a single-board computer built with ARM Cortex-A7 Dual-core (Allwinner A20 based) CPU and Mali400MP2 GPU, and open source software, Banana Pi can serve as a platform to make lots of applications for different purposes.

The RasPBX Project

This is a project dedicated to Asterisk and FreePBX running on the Raspberry Pi. Later, the Beaglebone folks ported RasPBX for the BeagleBone Black (BBB).

Asterix for Banana Pi

Sadly, the RasPBX project doesn’t support the Banana Pi yet. I looked everywhere on the net for an Asterix based PBX image for Banana Pi, but looks like no one has done this yet or they did but didn’t share . So, I decided to make one myself.

I simply replaced the rootfs on the Banana Pi’s Raspbian based image with RasPBX’s rootfs. The image should work on any Banana Pi variant with the Allwinner A20 processor (including Banana Pi, Banana Pro and Sinovoip’s Banana Pi M1).

Download links

The image file is 3.7GB, I am uploading a winrar compressed version that is approximately 437MB . Use a suitable application to un-compress it after download.
Pay 22.5 USD  (this will support our work)




CREDENTIALS

root/raspberry

  • FreePBX Username: asteriskuser
  • FreePBX Password: pi

Screenshots

FreePBX UIFreePBX_admin_screen

Further  Resources:

Directions to write the image to SD card

Read Documentation from RasPBX’s official website

 

PS: I have tested the image and it’s working fine. If you are facing any problems with it, feel free to post a comment and I’ll be happy to help. 🙂