[Bug 10456] New: busybox stty unable to set UART baud rate to 1Mbps

bugzilla at busybox.net bugzilla at busybox.net
Wed Oct 25 11:47:52 UTC 2017


https://bugs.busybox.net/show_bug.cgi?id=10456

            Bug ID: 10456
           Summary: busybox stty unable to set UART baud rate to 1Mbps
           Product: Busybox
           Version: 1.24.x
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at busybox.net
          Reporter: maik.brenke at continental-corporation.com
                CC: busybox-cvs at busybox.net
  Target Milestone: ---

We noticed on a buidroot generated image using busybox-tools that the command
stty (from busybus) supports only a limited UART baud rate (see [1] or [2]).

We did a lot of checks (see [1] or [2]) and the result was that the stty
(busybox) command was the problem. To conform this we installed the coreutils
including stty (coreutils). With stty (busybox) a baud rate of 1000000 bps
failed including faster baud rates, but with stty (coreutils) it was no problem
at all.


To test new stty (busybox) versions feel free to instruct me.


[1]:
http://forum.fs-net.de/index.php/Thread/4203-UART-interfaces-refuse-to-set-baudrate-to-1-Mbps/#post14236

[2]:
https://community.nxp.com/thread/461993

busybox version: v1.24.2

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