WDOG: Output status on read#19518
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@Javinator9889 please squash your change into one patch. |
Currently, the `read` function of the watchdog device is dummy and does nothing. Although this is fine, it's not useful at all from a userspace perspective, where you may want to check the current WDOG status. A wrapper around the `ioctl` `WDIOC_GETSTATUS` has been added as the `read` function for the WDOG. Signed-off-by: Javier Alonso <javieralonso@geotab.com>
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@xiaoxiang781216 squashed and force-pushed |
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@Javinator9889 please Document this new feature here: https://nuttx.apache.org/docs/latest/components/drivers/character/timers/watchdog.html
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Summary
Currently, the
readfunction of the watchdog device is dummy and does nothing. Although this is fine, it's not useful at all from a userspace perspective, where you may want to check the current WDOG status.A wrapper around the
ioctlWDIOC_GETSTATUShas been added as thereadfunction for the WDOG.Impact
This should help debugging and developers with watchdog-enabled systems
Testing
The testing in this case is quite straightforward:
cat /dev/watchdog0, whose output was: