MCUs with USB device in PDIP and a open source toolchain ?
Jan 27, 2012 23 Replies
J
JW
but not USB. DIPs are pretty thin on the ground in this segment, and even less with USB.
I've noticed that as well from Google posters. I don't know about your newsreader, but using Forte Agent if I press the "O" key it will line wrap the display so it fits in the window.
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R
rickman
her
t
ing
cts/vusb/index.html
I didn't know that any USB stacks were done in hardware. I've never heard of that. Even the separate USB interface chips use a software stack and have an embedded CPU. The FTDI CPU is quite fast.
Rick
S
Simon Clubley
ATMega:
formatting link
Loose wording on my part.
The library in question implements all parts of a USB device, including the on the wire signalling, in software by manipulating GPIO lines. This means you can use it on a AVR which does not have any USB hardware support at all.
I was looking for a device which has a hardware USB module built in and only requires the traditional USB device software infrastructure to support it.
Simon.
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
Microsoft: Bringing you 1980s technology to a 21st century world
J
Jim Granville
Then there are hybrid solutions, somewhere in the middle. IIRC Ubicom had a shifter/bit-stuff block, and the next layer was all software. XMOS also have a similar 'minimal hardware' approach. You can start with XMOS, from $49
-jg
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