Bug 255143 - uslcom: Garbled output from Silicon Labs CP2102
Summary: uslcom: Garbled output from Silicon Labs CP2102
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: usb (show other bugs)
Version: 12.2-RELEASE
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-usb (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-04-17 07:49 UTC by probono
Modified: 2021-04-17 07:49 UTC (History)
0 users

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Description probono 2021-04-17 07:49:02 UTC
ugen5.2: <Silicon Labs CP2102 USB to UART Bridge Controller> at usbus5
uslcom0 on uhub2
uslcom0: <CP2102 USB to UART Bridge Controller> on usbus5

sudo screen /dev/ttyU0 500000
results in garbled output on FreeBSD:

QJ`J!�F����@� �D�*#"�J��`��*�i����G���-���*�

Tested on FreeBSD 12.2-RELEASE r366954 GENERIC on an Intel CPU machine as well as on FreeBSD 13.0 on a Raspberry Pi 3.

The same device on the same machines on the same USB ports with the same bit rate works well when using Linux.