Add a backend for Silicon Labs CP2110/4 HID-to-UART bridge.
These two chips implement UART access via a HID protocol, which can be
implemented purely in user space. The protocol is documented by Silicon
Labs AN434:
https://www.silabs.com/documents/public/application-notes/AN434-CP2110-4-Interface-Specification.pdf
The backend is implemented based on cython-hidapi
(https://github.com/trezor/cython-hidapi), making it OS-independent, if a
bit awkward.
diff --git a/setup.py b/setup.py
index 6e8b586..ea53643 100644
--- a/setup.py
+++ b/setup.py
@@ -97,4 +97,7 @@
],
platforms='any',
scripts=['serial/tools/miniterm.py'],
+ extras_require = {
+ 'cp2110': ['hidapi'],
+ },
)