Re: how to port uC/OS-II 2.52 into ARM?

On Wed, 03 Dec 2003 08:31:36 +0800, myliux wrote:

>> > suppose I am very "smart" and installed and upload a "OS" in mcu,
>> > will it like
>> > boot like a linux.
>> >
>> > #  ls ---show all the files for example
>> > # ftp--- transfer files back and fore ...etc.
>> >
>> >
>> > it said it will cater certain tasks to be optimised whatever you
>> > would like to be in your mcu.
>> > you tuned it and fine-tuned with mcu 's parameters in overview sense.
> 
> "The on-board computer is based on an Atmel AT91M40800 32 bit RISC processor
> running at 16 MHz with 2 Mb Flash, 1 Mb RAM, and 16 kb ROM for radiation-
> and fault resistant boot software. The software in the flash can be changed
> by ground station command. The computer runs the free operating system eCos
> and a packet handler system to communicate between processes. The ROM
> contains a boot- and failsafe mode programmed directly in c, capable of
> safeguarding the satellite in failure modes and receiving software updates
> via the radio link. "

That quote comes from this web page: (thanks, google).

http://www.dtusat.dtu.dk/group.php?c_gid=2

If you look down the left hand side of the page, there are some menu items
describing the on-board software.  The "Protocol" page says that they're
using the "AX.25" protocol, which is used by radio amateurs.  Not TCP/IP
or FTP at all.

> but why it has upload capacities, the ecos must have a ftp function? is
> it not?

a) It probably has upload capacities because they thought that they might
want to change its function.

b) ecos does have a TCP/IP network stack, which may or may not include an
ftp server. (according to: http://ecos.sourceware.org/about.html)

c) any given deployment of ecos, such as this satellite, may or may not
include any of the standard pieces of the OS.  Since other parts of the
web site suggest otherwise, I'd guess that they don't use FTP.

According to the home page of the web site, the satellite was dead
on arrival in orbit, and has never communicated with anyone on earth in
the 155 days that it's been aloft, in any way.  Sad really; sounds like a
neat project.

So: what does this have to do with the Subject: line?

-- 
Andrew