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London Calling: Sony set to make Raspberry Pi

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betajet
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re: London Calling: Sony set to make Raspberry Pi
betajet   9/10/2012 3:06:44 PM
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RasPi is a terrific GNU/Linux platform for the price, with a strong developer community. However, GNU/Linux is in many ways a mainframe operating system and programming down at the bare metal can be challenging, especially since the BCM2835 documentation is limited. For bare-metal real-time development, here are a couple of interesting new boards to be available later this month: Texas Instruments Stellaris® LM4F120 LaunchPad Evaluation Board (http://www.ti.com/tool/ek-lm4f120xl) with a promotional price of US$4.99. The processor is an 80 MHz Cortex-M4F with DSP instructions, FLOATING POINT, 256KB Flash, and 32KB SRAM. Freescale Freedoom Kinetis KL25Z development board (http://www.element14.com/community/community/knode/dev_platforms_kits/element14_dev_kits/kinetis_kl2_freedom_board) for US$12.95 with 48 MHz Cortex-M0+, 128KB Flash, and 16KB SRAM.

betajet
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re: London Calling: Sony set to make Raspberry Pi
betajet   9/10/2012 3:10:16 PM
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Let me try those links again. The parentheses created confusion. http://www.ti.com/tool/ek-lm4f120xl http://www.element14.com/community/community/knode/dev_platforms_kits/element14_dev_kits/kinetis_kl2_freedom_board

Roger3
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re: London Calling: Sony set to make Raspberry Pi
Roger3   9/10/2012 6:55:27 PM
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Why spending time in something that you cannot purchase to put in your product ? This is vaporware. Try Linux Stamp ( http://www.thelinuxstamp.com/ ) Use Atmel, you can purchase the chips right in the corner; Datasheets ? Get full datasheets at atmel.com.

Peter Clarke
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re: London Calling: Sony set to make Raspberry Pi
Peter Clarke   9/11/2012 7:53:43 AM
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I am not sure why you think such things are vaporware as they have been on sale for some time. In fact that highlights a reason to purchase Raspberry Pi or Mbed; lower price.

KB3001
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re: London Calling: Sony set to make Raspberry Pi
KB3001   9/11/2012 9:28:33 AM
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It's anything but vapourware! I think we should all support such initiatives as they have the potential to inspire generations who might not be inclined or financially able to join our community.

weflynnJr
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re: London Calling: Sony set to make Raspberry Pi
weflynnJr   9/11/2012 3:52:40 PM
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No video...

jeremybennett
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re: London Calling: Sony set to make Raspberry Pi
jeremybennett   9/11/2012 4:26:45 PM
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Surely if you want to got smaller embedded, there is Arduino. The key thing about Raspberry Pi is its accessibility for students. The easy ability to control arbitrary hardware - my son wants to use it to control his radio controlled car, my daughter for wearable electronics. But the key difference to mbed is the open source ecosystem. mbed is great, and well supported, but you use it within ARM's development environment. For education you need to be able to explore and that is what the Raspberry Pi's ecosystem gives you.

przemek0
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re: London Calling: Sony set to make Raspberry Pi
przemek0   9/11/2012 9:17:23 PM
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Also the ST Discovery (CortexM0 for $8 and CortexM4 for $14) and NXP mbed ($$). BTW, I am curious what will be the post-promotion price for Stellaris Launchpad.. Having said that, Cortex M does not use virtual memory so it doesn't run "proper" memory protected OSes like Linux (I don't know if someone tried uClinux on them). The M series is great for a tight hardware/bare metal loop, but if advanced protocol stacks are involved (network, USB, codecs, vision, multiprocessing, etc), I would miss the rich, standard programming environment of an established system like Linux.

Peter Clarke
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re: London Calling: Sony set to make Raspberry Pi
Peter Clarke   9/12/2012 9:47:24 AM
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@Jeremy Good points. But I am not sure limiting the information available (datasheet as secret document) is in the same spirit as open exploration. As you may be able to tell the disappearance of freely available datasheets from the engineering environment is a pet peeve of mine. Broadcom is not alone in this.

jeremybennett
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re: London Calling: Sony set to make Raspberry Pi
jeremybennett   9/12/2012 10:24:24 AM
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@Peter, I'm with you on the limits to the Raspberry Pi's openness. I think Broadcom have made a big PR and business mistake in this. However most of the software is open, and the board schematics are available. For practical purposes, the system as experienced by students is open for exploration, in a way that mbed (which is still a prototyping and educational system I admire) is not. Broadcom may naively be hoping that they can corner the market. However RaspberryPi is ultimately defined by its user interfaces, both hardware and software. If it is half as successful as we hope, then there will be plenty of others out there offering clones, with identical interfaces. It happened with Arduino, and Raspberry Pi is already far bigger.

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