* Peter Stuge stuge-linuxbios@cdy.org [060707 19:52]:
This is a nice idea.
On Fri, Jul 07, 2006 at 04:18:25PM +0200, Stefan Reinauer wrote:
what you need is a debug device, which mostly looks like a usb style null modem cable. No idea where to get this hardware though.
D'uh - it reads any usb 2 to usb 2 data link cable can be used for this purpose. Such cables are available for ~ 10$
Where did you read this?
I doubt they will work, unless the manufacturers were exceedingly clever and actually implemented the DEBUG_MODE feature in the device..
You are right. The cable would need to implement the DEBUG_MODE feature.
I read over page 5 of http://www.intel.com/technology/magazine/computing/it09021.pdf and it actually says so.
The question is now: what devices/cables can be used for this purpose. Or is it maybe trivial to build such a device yourself in a low quantity?
I'm not sure if this requirement is compatible with the CDC spec that USB-serial adapters implement, but it would indeed be very handy if minicom+the kernel USB-serial driver could be used with the host end of the debug device.
That would indeed be great!
It's quite possible that the device requires a special application, but in any case such an application would be trivial to hack up.
Or just a small dummy serial driver so minicom or whatever could be used.
I think the hard part is to find or make the hardware. Or maybe not so hard if you have a proven USB2 HS platform and are comfortable with tweaking USB descriptors. All I have handy is USB2 FS. :(
The idea is probably to get a cost effective solution, otherwise a lot of volunteers might get locked out of joining the project.
Stefan