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issues.txt
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issues.txt
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ISSUES
Known issues of Circle are:
* There are known issues with the included USB library (e.g. no dynamic
attachments, no error recovery, limited split support, no isochronous support).
You should only attach the USB devices, which are needed for your application!
* Circle is not a real-time OS. That means different simultaneous operations may
interfere in respect of its timing behaviour. The provided samples are tested to
work but if you try different combinations of hardware support classes this has
to be tested by yourself. Nevertheless real-time applications based on Circle
are possible. Have a look at doc/realtime.txt for more information!
* sample/31-webclient does not work any more, because of the missing SSL/TLS
support. SSL/TLS support for Circle is developed here:
https://github.com/smuehlst/circle-stdlib
* Some modules in the addon/ subdirectory will not build with STDLIB_SUPPORT = 0.
* There may be a few USB devices, which report a transfer error 3 (babble) on the
Raspberry Pi 4. According to some comments on the Internet, this may be caused
by incompatibilities of the USB device firmware. These devices cannot be used
with Circle on the Raspberry Pi 4 currently.
You can see or report further issues here:
https://github.com/rsta2/circle/issues