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dd support for a USB keyboard as the NxConsole and text widget input. Not fully functional as of this initial check-in. Basic functionality is there, but there are conditions were the keyboard gets lost.

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This commit is contained in:
Gregory Nutt 2014-07-30 17:01:51 -06:00
parent 40e27add0b
commit 7e4e5ee543
1 changed files with 14 additions and 17 deletions
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31
configs/sama5d4-ek/README.txt
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@ -4060,30 +4060,27 @@ Configurations
recognized.
The USB keyboard is configured to replace the NSH stdin device some
that NSH will take input from the USB keyboard. These are the
relevant configuration options:
that NSH will take input from the USB keyboard. This has to be
done a little differently for the case of NxWM::CNxConsoles than
in the standard NSH configuration. Here the relevant configuration
options are:
CONFIG_NSH_USBKBD=y
CONFIG_NSH_USBKBD_DEVNAME="/dev/kbda"
CONFIG_NXWM_KEYBOARD_USBHOST=y
CONFIG_NXWM_KEYBOARD_DEVPATH="/dev/kbda"
When NSH comes up, it will attempt to open /dev/kbda and replace
stdin with that device. If no USB keyboard is connected when you
start the NxConsole, you will see:
Waiting for a keyboard...
NSH will then automatically start when the keyboard is attached:
NSH will then automatically start when the NxConsole is started:
NuttShell (NSH) NuttX-7.3
nsh>
If the keyboard is detached, NSH will stop and wait for you to
re-attach the keyboard:
When the NxConsole comes up, it will attempt to use /dev/kbda device
for input. Obviously, you cannot enter text if there is no keyboard
but otherwise you will not see any indication whether a keyboard is
connected or not.
nsh> nsh: nsh_session: readline failed: 1
Please re-connect the keyboard...
And the session will restart when the keyboard is reconnected.
If the keyboard is detached, you not be able to enter text until the
keyboard is reconnected. Again, there is no other special indication
of the keyboard state.
The keyboard is currently configured to poll at 80 MSec intervals.
That might not be fast enough for you if you are a fast typist. This