Embeded
Hello there,
maybe a bit wrong list, maybe not :) I have to crete embeded machine
with custom HW. I am looking for some microcotroller, enough strong which is abble to run kernel. I am going to use clean kernel + asm stuffs to build system here. I am looking for CPU which have working kernel. Anyone have experimence with this ?
Microcontroller in my eyes mean: it doesn't need any external chips at
all. It includes everything. The less external chips it needs the better. Integrated ethernet (or usb) controller (with proper kernel drivers) is my dream :)
Thank you,
Signature · 13 lines
Best regards,
Lada 'Ray' Lostak
Unreal64 Develop group
http://www.unreal64.net
http://www.orcave.com
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In the 1960s you needed the power of two C64s to get a rocket
to the moon. Now you need a machine which is a vast number
of times more powerful just to run the most popular GUI.
Imagination is more important than knowledge...Date sent: Wed, 10 Aug 2005 07:59:47 +0200 From: Lada 'Ray' Lostak <[email protected]> Subject: Embeded
Quoted 11 lines
maybe a bit wrong list, maybe not :) I have to crete embeded machine with custom HW. I am looking for some microcotroller, enough strong which is abble to run kernel. I am going to use clean kernel + asm stuffs to build system here. I am looking for CPU which have working kernel. Anyone have experimence with this ?
Microcontroller in my eyes mean: it doesn't need any external chips at all. It includes everything. The less external chips it needs the better. Integrated ethernet (or usb) controller (with proper kernel drivers) is my dream :)
Have a look at Philips LP2138/48 or Atmel AT91SAM7S256. These are 60 or 30 MHz ARM cores with up 512k Flash and 32k RAM. Forget about Linux and do the O/S yourself. Then it will fit. We run a multi-threaded web server on a Philips LPC2106 with 1288k Flash and 64k RAM and an external Ethernet chip.
If you must run some flavour of Linux, then you will need external Flash and RAM, in which case you may find the Atmel AT91RM9200 to be what you need. Boards and Linux for this chip already exist.
Stephen
--
Stephen Pelc, [email protected] MicroProcessor Engineering Ltd - More Real, Less Time 133 Hill Lane, Southampton SO15 5AF, England
tel: +44 23 80 631441, fax: +44 23 80 339691
web: http://www.mpeltd.demon.co.uk - free VFX Forth downloads
Quoted 1 line
Have a look at Philips LP2138/48 or Atmel AT91SAM7S256. These are 60 or 30 MHz ARM cores with up 512k Flash and 32k RAM. Forget about Linux and do the O/S yourself. Then it will fit. We run a multi-threaded web server on a Philips LPC2106 with 1288k Flash and 64k RAM and an external Ethernet chip.
Thank you, I didn't know Philips do uC too :) I know Atmel one's and they seems prety OK. What TCP/IP stack you are using ? There exists sever GPL'ed, but I have no experimence with them.
The only reason why I wanted to run linux is to use their eth drivers & tcp/ip stack. Nothing more.
R.
Quoted 6 lines
Thank you, I didn't know Philips do uC too :) I know Atmel one's and they seems prety OK. What TCP/IP stack you are using ? There exists sever GPL'ed, but I have no experimence with them.
The only reason why I wanted to run linux is to use their eth drivers & tcp/ip stack. Nothing more.
We use our own, see
www.mpeforth.com/powernet.htm
If you are using external Ethernet chips such as the SMSC 91Cxxx series, RealTek 8019AS (and other NE2000 clones) or Asix 88976, the drivers are pretty simple and there are plenty of code examples on the net. Once you know what you are doing, about 200 lines of code.
The Ethernet controllers integrated into most CPUs tend to consist of a MAC unit with small buffers and a DMA engine. You have to manage it all yourself. They can require 1000+ lines of code.
What to do depends on the hardware volume and how much time you have.
Stephen
--
Stephen Pelc, [email protected] MicroProcessor Engineering Ltd - More Real, Less Time 133 Hill Lane, Southampton SO15 5AF, England
tel: +44 23 80 631441, fax: +44 23 80 339691
web: http://www.mpeltd.demon.co.uk - free VFX Forth downloads