Historic archive of defunct list thumbgps-devel@lists.bufferbloat.net
 help / color / mirror / Atom feed
* [Thumbgps-devel] in search of a better microcontroller
@ 2012-03-27  0:53 Dave Taht
  2012-03-27 12:39 ` tz
  2012-03-27 14:29 ` Patrick Maupin
  0 siblings, 2 replies; 3+ messages in thread
From: Dave Taht @ 2012-03-27  0:53 UTC (permalink / raw)
  To: thumbgps-devel

[-- Attachment #1: Type: text/plain, Size: 2000 bytes --]

Since 'plain jane' is coming along nicely, I've been amusing myself with
what it would take to do 'sexy sadie'
(not my final choice for a name btw!)

I wanted to combine at least two functions into the usb stick, they would
be:

* gps/time with supercap backup
* other sensor support (wind cups, precipitation, barometer, etc)
* some sort of direct output signal (can bus? spi bus? don't know yet)
* randomness/entropy generator

While my initial choice for the former two features would be the ublox
device already discussed, I haven't pursued the possibility of being able
to modify their firmware to do what I want. I should contact them I
guess... but I'm wagering that gaining access to that firmware will be
difficult, so interfacing with a cheaper gps device (e.g plaine jane) and
adding a microcontroller to it seems like the best option.

The problem is I'd like to find something capable of 480Mbit transfers.

The first microcontroller I picked (the atmel) seems to be near end of life
and only does 12Mbit, so I went looking for the sexy and new (a lot of
those!), and stumbled across this one:

http://media.freescale.com/phoenix.zhtml?c=196520&p=irol-newsArticle_print&ID=1671968&highlight=

I couldn't help but laugh when I saw:

"Linear 4 GB address space that removes the need for paging, reducing
software complexity and ensuring a more 8-bit-like user experience"

Yea, that 8 bit-like user experience. That's what I want in a 32 bit 4GB
capable architecture.

The last phrase was removed from the official site later, after whoever
wrote the pr release came down off of whatever he/she was smoking.

http://www.freescale.com/webapp/sps/site/overview.jsp?code=KINETIS_L_SERIES&tid=van%20LSERIES

This chip is WAY too new to consider using, but it is a sign of things to
come. Still trying to find a sane 480Mbit USB interface that's under 10
bucks...

-- 
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://www.bufferbloat.net

[-- Attachment #2: Type: text/html, Size: 2579 bytes --]

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2012-03-27 14:29 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-03-27  0:53 [Thumbgps-devel] in search of a better microcontroller Dave Taht
2012-03-27 12:39 ` tz
2012-03-27 14:29 ` Patrick Maupin

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox