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MFS Meeting. Tue, 18 Mar. Talk: "The GNU Compiler Collection: How to Use, Port and Upstream the World's Most Widely Used Tool Chain"
by Michael Dorrington 27 Feb '14

27 Feb '14

Please feel free to forward this to those that would welcome it. * Event: Manchester Free Software's March Meeting * Talk: The GNU Compiler Collection: How to Use, Port and Upstream the World's Most Widely Used Tool Chain * Speaker: Dr Jeremy Bennett (Embecosm) (and Joern Rennecke (Embecosm) for Q&A) * Date: Tuesday, 18th March 2014 (3rd Tuesday of the month) * Start time: 19:00 * Finish time: 20:30 (and then on for drinks) * Location: Madlab. (Manchester Digital Laboratory). - http://madlab.org.uk/ * Address: 36-40 Edge Street, Manchester. M4 1HN. - Opposite "Common" on Edge Street, Northern Quarter. - http://www.openstreetmap.org/#map=19/53.48413/-2.23639 Details ------- The purpose of Manchester Free Software is to promote the Free Software philosophy. This meeting will be a talk with Q&A. "The GNU Compiler Collection (GCC) is 28 years old this year. Originally a C compiler, it now handles many languages (8 in the official distribution) and has been ported to many architectures (nearly 50 in the official distribution). Alongside the compiler are low level binary utilities (assembler, disassembler, linker, profiler, etc.) and a source level debugger (GDB). At 5 million lines of code, GCC is the third largest program in any GNU/Linux system. In this talk we'll look at how to best use the tool chain. Starting with official distributions, we'll look at what is needed to build your own version from source code. We'll then explore what it takes to modify the tool chain, to port it to a new architecture, to test it, and ultimately to have your code accepted into the official FSF distribution. We'll also look at some of the more unusual uses of the tool chain. Its porting to new chips during the design phase to test the hardware design before spinning silicon. How approaches such as iterative compilation and genetic algorithms can double performance compared to -O3. And finally how compilers can use machine learning to work out the best optimizations for your program and even optimize for energy efficiency. Throughout the talks we'll use practical examples from both native compilers (for Intel and ARM) and for cross compilers (such as Atmel AVR and Adapteva Epiphany). We'll also demonstrate the low cost free hardware energy measurement board used to optimize for energy efficiency." Speakers -------- "Dr Jeremy Bennett is Chief Executive of Embecosm, an free/libre and open source software consultancy specializing in tool chain development and silicon chip modelling. A former academic he is author of "Introduction to Compiling Techniques" (McGraw-Hill 1990, 1995, 2003). Joern Rennecke, who leads GCC development for Embecosm, will take questions at the end of the talk. Joern is one of the leading developers of GCC, a project to which he has been contributing for nearly 20 years. He has been responsible for the Renesas SH, OpenRISC 1000, Synopsys ARC ports and most recently has been developing the Atmel AVR and Adapteva Epiphany implementations. Embecosm are currently hiring both trainee and experienced compiler developers. Details at http://www.embecosm.com/careers/." After-meeting ------------- The meeting will be followed by informal discussion and socialising in the bar opposite, Common <http://www.aplacecalledcommon.co.uk/>. There are soft drinks available and there is no pressure to consume alcohol. Location -------- The meeting will take place at the usual venue of Madlab, details above. Ring the bell beside the door to be let in. The venue provides wifi. Parking ------- Around the venue there are parking meter bays that become zero cost after 8pm on Tuesday so you will have to pay up until then and the maximum stay is 2 hours BUT MAKE SURE YOU VERIFY ALL THIS on parking. There are paid parking lots around the venue, they are marked by a blue P in this OpenStreetMap centred on Madlab <http://www.openstreetmap.org/#map=15/53.4843/-2.2365>. Most of those parking lots are owned by NCP <http://www.ncp.co.uk/>. If you can’t decide otherwise then park in Manchester Arndale <http://www.manchesterarndale.com/directions.aspx>. Public Transport ---------------- Manchester Victoria (MCV) train station, Shudehill tram and bus station, and Manchester Piccadilly bus station are all fairly close to Madlab, see OpenStreetMap centred on Madlab <http://www.openstreetmap.org/#map=15/53.4843/-2.2365>. Manchester Piccadilly (MAN) train station and Manchester Central Coach Station are not too far away either. More Information ---------------- Information about Manchester Free Software can be found on the Manchester Free Software pages on LibrePlanet <http://libreplanet.org/wiki/Manchester>. Regards, Mike. -- FSF member #9429 http://www.fsf.org/register_form?referrer=9429 http://www.fsf.org/about "The Free Software Foundation (FSF) is a nonprofit with a worldwide mission to promote computer user freedom and to defend the rights of all free software users."

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OSHUG #32 -- Embedded Scripting, 27th March 2014.
by Andrew Back 27 Feb '14

27 Feb '14

Hello, Registration is now open for the March meeting. Details below. Regards, Andrew // Event #32 -- Embedded Scripting (Lua, Espruino, Micro Python) 27th March 2014, 17:30 - 20:30 at BCS London, 1st Floor, The Davidson Building, 5 Southampton Street, London, WC2E 7HA. Registration: http://oshug.org/event/32 The thirty-second OSHUG meeting will take a look at the use of scripting languages with deeply embedded computing platforms, which have much more constrained resources than the platforms which were originally targeted by the languages. -- Programming a microcontroller with Lua eLua is a full version of the Lua programming language for microcontrollers, running on bare metal. Lua provides a modern high level dynamicaly typed language, with first class functions, coroutines and an API for interacting with C code, and yet which is very small and can run in a memory constrained environment. This talk will cover the Lua language and microcontroller environment, and show it running on-off-the-shelf ARM Cortex boards as well as the Mizar32, an open hardware design built especially for eLua. Justin Cormack is a software developer based in London. He previously worked at a startup that built LED displays and retains a fondness for hardware. He organizes the London Lua User Group, which hosts talks on the Lua programming language. -- Bringing JavaScript to Microcontrollers This talk will discuss the benefits and challenges of running a modern scripting language on microcontrollers with extremely limited resources. In particular we will take a look at the Espruino JavaScript interpreter and how it addresses these challenges and manages to run in less than 8kB of RAM. Gordon Williams has developed software for companies such as Altera, Nokia, Microsoft and Lloyds Register, but has been working on the Espruino JavaScript interpreter for the last 18 months. In his free time he enjoys making things - from little gadgets to whole cars. -- Micro Python -- Python for microcontrollers Microcontrollers have recently become powerful enough to host high-level scripting languages and run meaningful programs written in them. In this talk we will explore the software and hardware of the Micro Python project, an open source implementation of Python 3 which aims to be as compatible as possible with CPython, whilst still fitting within the RAM and ROM constraints of a microcontroller. Many tricks are employed to put as much as possible within ROM, and to use the least RAM and minimal heap allocations as is feasible. The project was successfully funded via a Kickstarter campaign at the end of 2013, and the hardware is currently being manufactured at Jaltek Systems UK. Damien George is a theoretical physicist who likes to write compilers and build robots in his spare time. Note: Please aim to by 18:15 as the first talk will start at 18:30 prompt.

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Fwd: [OSC-Members] Interesting use for old tech
by Jeremy Bennett 18 Feb '14

18 Feb '14

This came up on the Open Source Consortium mailing list and thought it might appeal to/inspire OSHUG members Jeremy -------- Original Message -------- Subject: [OSC-Members] Interesting use for old tech Date: Thu, 13 Feb 2014 12:22:11 +0000 From: Robert To: osc-members(a)opensourceconsortium.org I came across this: http://www.youtube.com/watch?v=nOMX3deeW6Q First thought; somebody has a lot of time to spare - but interesting and amusing nevertheless. Is that a RPi or an Arduino I see as the controller? Having looked on YouTube I see there's lots more. This: http://www.youtube.com/watch?v=bGSTYvx5c78 is my favourite so far. Robert. -- Tel: +44 (1590) 610184 Cell: +44 (7970) 676050 SkypeID: jeremybennett Twitter: @jeremypbennett Email: jeremy.bennett(a)embecosm.com Web: www.embecosm.com

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OpenData + Wearable devices hackathon! 15-16th March at TechHub, Manchester.
by Andrew Back 13 Feb '14

13 Feb '14

Hello, Details below of an open data/wearables hackathon that may be of interest to folks. Cheers, Andrew // OpenData + Wearable devices hackathon! 15-16th March at TechHub, Manchester. Open Data - Wearable devices - HACK! Registration: https://www.eventbrite.co.uk/e/numbers-that-matter-hackathon-tickets-103683… - What? We've done our studies. We've transcribed audio, shadowed people, documented their stories, captured their concerns, and been receptive to their ideas. We have a body of work relating to what kind of numbers matter to them, how we could realise them, and what kind of devices would work in the field. This leads to our hackathon. We have a body of documentation we'll make available about what people want, how they understand and relate to data around them, and ideas for possible devices. You'll be able to explore and help realise these ideas - either as they are, or from your own perspective. We'll have equipment for you to use, from Raspberry Pis to Arduinos, and experts on-hand who will help you get to prototype. The overall winner from the day, as voted for by a panel of judges, will win the opportunity to take their prototype to a full field trial with support from the Numbers That Matter team. - Who We encourage collaboration between participants - if you don't already have a team to work with, you can meet up with people at the start of the event. It's easier to complete a hack if there's a range of skills and people working together. We'll be making working prototypes of hardware and software on the day, so people with experience in these fields are important team members. Design is a key aspect of usable devices and experiences - teams will need these skills to anticipate and plan meaningful devices Analysis and data processing skills will be needed in your team - knowledge of existing formats and platforms can speed development on the day Entry is open to anyone; professional developers, activist hackers, design students, anthropologists, sociologists, geeks and social entrepreneurs are welcome, as is anyone who feels they can contribute to the day.

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Hardware project input required
by Chris Puttick 07 Feb '14

07 Feb '14

Hi all I've been asked if I can find someone who can provide design input for a product prototype. Project concept has been described to me as follows: a wearable tech device involving tracking and collecting motion data (probably using a gyroscope and accelerometer) and transmit it back to a mobile device wirelessly. Please feel free to ask questions and I'll try and get more detail if I can, or contact me off list to express an interest in being intro'd to the project owner. Thanks Chris -- @putt1ck putt1ck.blogspot.com http://twoten.is skype: putt1ck Opinions in this email are my own and may not reflect that of my clients, past employers, associates, friends, family, pets etc.. Documents attached to this email may be in ISO 26300 format: http://iso26300.info

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Fixing a date for OSHCamp 2014.
by Andrew Back 07 Feb '14

07 Feb '14

Hi All, Last year's OSHCamp was something of an experiment — hosting it as part of Wuthering Bytes — and based on how the event went overall and feedback, we've decided to do something a bit different this year. The idea is that OSHCamp will still be hosted as part of Wuthering Bytes, but that the latter will become more of a festival comprised of a series of events: * OSHCamp will have the Waterfront Hall to itself on the Saturday (10x talks) and Sunday (workshops). * On the Friday there will be a day of talks in the Waterfront Hall on a much broader range of topics (think of the non-OSHUG and crossover talks from WB 2013), with accompanying workshops upstairs in The Space on the Saturday. * Main social event Friday evening. * A number of smaller/fringe events in the week leading up. The dates we are looking at are: August 15/16/17 September 19/20/21 And ideally we need to decide on August or September ASAP. So, any preferences? Improved chances of better weather in August, but obviously a lot of people go away on holiday. Which may not be a bad thing, if you want to take a break in Hebden Bridge :o) Best, Andrew

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FPGA shields for Rasberry Pi and Beagle Bone
by Jeremy Bennett 25 Jan '14

25 Jan '14

Hi all, Has anyone had experience with these boards: http://www.valentfx.com/fpga-logi-family/logi-bone http://www.valentfx.com/fpga-logi-family/logi-pi Kickstarter funded and not yet available, but the price is less than a DE0-nano. Is the FPGA big enough to run an OpenRISC as co-processor? I'm wondering if these would be good platforms for a future ChipHack event? Jeremy -- Tel: +44 (1590) 610184 Cell: +44 (7970) 676050 SkypeID: jeremybennett Twitter: @jeremypbennett Email: jeremy.bennett(a)embecosm.com Web: www.embecosm.com

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Physical Data Privacy Legal Hackathon Project - Feb 8/9
by Info SS 23 Jan '14

23 Jan '14

Hello Everyone, I have been to an OSHUG meeting at C4CC but never signed up to the list, so this is my first post. We are organising a Data Privacy Legal Hackathon at C4CC on Feb 8/9 and there is a project that I am very interested in making for the hackathon competition. It is a physical data privacy sign that can do Do Not Track for people. At C4CC there is a laser cutter and a 3d printer, I have ordered some estimate beacons, have a few Rasberry Pi’s. If this interests you please get in touch. James has offered to run the 3d printer and laser cutter. Now we are looking for at least 1 engineer, 1 developer 1 designer If this interests you please let us know and sign up on the Eventbright Kind Regards, Mark Lizar

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OSHUG #31 — Privacy and Security, 20th February 2014.
by Andrew Back 22 Jan '14

22 Jan '14

Hello, Registration is now open for the first OSHUG meeting of 2014! Details below. Regards, Andrew // Event #31 — Privacy and Security (Security protocols in constrained environments, RFIDler, Indie Phone) 20th February 2014, 17:30 - 20:30 at BCS London, 1st Floor, The Davidson Building, 5 Southampton Street, London, WC2E 7HA. Registration: http://oshug.org/event/31 The thirty-first OSHUG meeting is dedicated to privacy and security, with talks on implementing security protocols in constrained environments, an SDR RFID reader/writer/emulator, and a new initiative that will use design thinking and open source to create a truly empowering mobile phone. — Security protocols in constrained environments Implementation of security protocols such as TLS, SSH or IPsec come with a memory and compute overhead. Whilst this has become negligible in full scale environments it's still a real issue for hobbyist and embedded developers. This presentation will look at the sources of the overheads, what can be done to minimise them, and what sort of hardware platforms can be made to absorb them. The benefits and potential pitfalls of hardware specific implementations will also be examined. Chris Swan is CTO at CohesiveFT where he helps build secure cloud based networks. He's previously been a security guy at large Swiss banks, and before that was a Weapon Engineering Officer in the Royal Navy. Chris has tinkered with electronics since pre-school, and these days has a desk littered with various dev boards and projects. — RFIDler: A Software Defined RFID Reader/Writer/Emulator Software Defined Radio has been quietly revolutionising the world of RF. However, the same revolution has not yet taken place in RFID. The proliferation of RFID/NFC devices means that it is unlikely that you will not interact with one such device or another on a daily basis. Whether it’s your car key, door entry card, transport card, contactless credit card, passport, etc. you almost certainly have one in your pocket right now! RFIDler is a new project, created by Aperture Labs, designed to bring the world of Software Defined Radio into the RFID spectrum. We have created a small, open source, cheap to build platform that allows any suitably powerful microprocessor access to the raw data created by the over-the-air conversation between tag and reader coil. The device can also act as a standalone ‘hacking’ platform for RFID manipulation/examination. The rest is up to you! Adam “Major Malfunction” Laurie is a security consultant working in the field of electronic communications, and a Director of Aperture Labs Ltd., who specialise in reverse engineering of secure systems. He started in the computer industry in the late Seventies, and quickly became interested in the underlying network and data protocols. During this period, he successfully disproved the industry lie that music CDs could not be read by computers, and wrote the world’s first CD ripper, ‘CDGRAB’. He was also involved various early open source projects, including ‘Apache-SSL’ which went on to become the de-facto standard secure web server. Since the late Nineties he has focused his attention on security, and has been the author of various papers exposing flaws in Internet services and/or software, as well as pioneering the concept of re-using military data centres (housed in underground nuclear bunkers) as secure hosting facilities. Andy Ritchie has been working in the computer and technology industry for over 20 years for major industry players such as ICL, Informix, British Airways and Motorola. Founding his first company, Point 4 Consulting at the age of 25, he built it into a multi-million pound technology design consultancy. Point 4 provided critical back end technology and management for major web sites such as The Electronic Telegraph, MTV, United Airlines, Interflora, Credit Suisse,BT, Littlewoods and Sony. Following Point 4 he went on to found Ablaise, a company that manages the considerable intellectual property generated by Point 4, and Aperture Labs. In his spare time he manages the worlds largest and longest running security conference, Defcon. Andy's research focuses on access control systems, biometric devices and embedded systems security, and he has spoken and trained at information security conferences in Europe and the US publicly and for private and governmental audiences. He is responsible for identifying major vulnerabilities in various access control and biometric systems, and has a passion for creating devices that emulate access control tokens either electronic physical or biometric. Andy has been responsible both directly and indirectly for changing access control guidelines for several western governments. Andy is currently a director of Aperture Labs Ltd, a company that specialises in reverse engineering and security evaluations of embedded systems. — Indie: a tale of privacy, civil liberties, and a phone Can a phone really help protect our civil liberties? Aral Balkan thinks so. And he’s embarked on an audacious journey to make one. Join us to hear the introduction of a two-year story that is only just beginning. Aral Balkan is is founder and designer of Indie Phone, a phone that empowers mere mortals to own their own data. Note: Please aim to by 18:15 as the first talk will start at 18:30 prompt.

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BCS OSSG: Open Source Compilers, 23rd January.
by Andrew Back 20 Jan '14

20 Jan '14

Hello, There isn't an OSHUG meeting in January, however, the BCS OSSG are hosting a meeting on the 23rd which those with an interest in compilers may wish to head along to. Featuring, of course, talks from OSHUG's own compiler experts. Details below. Cheers, Andrew // The Open Source Specialist Group (OSSG) will be holding a joint meeting with the BCS SPA group on January 23rd 2014 dedicated to Open Source compilers. The even will take place at the BCS Central London Offices, First Floor, The Davidson Building, 5 Southampton Street, London WC2E 7HA betwen 5:30pm and 8 :30pm. Please note that you need to register to attend: https://events.bcs.org/book/923/ The event is open and free to attend for both BCS members and non-members. The event currently consists of three half-hour talks (20 minutes of talk, 10 minutes of questions) The current sessions are: * LLVM, Simon Cook, Embecosm * Verilator: An open source Verilog to C++ compiler, Jeremy Bennett * Compiler optimization for energy minimization, James Pallister, University of Bristol Further details can be found here at the BCS OSSG web site: http://ossg.bcs.org/2013/12/14/open-source-compilers-london-2312014/

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