27 lines
1.2 KiB
ReStructuredText
27 lines
1.2 KiB
ReStructuredText
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``watchdog`` Watchdog Timer
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===========================
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A simple test of a watchdog timer driver. Initializes starts the watchdog timer.
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It pings the watchdog timer for a period of time then lets the watchdog timer
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expire... resetting the CPU is successful. This example can ONLY be built as an
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NSH built-in function.
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This test depends on these specific Watchdog/NSH configurations settings (your
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specific watchdog hardware settings might require additional settings).
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- ``CONFIG_WATCHDOG`` – Enables watchdog timer support support.
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- ``CONFIG_NSH_BUILTIN_APPS`` – Build the watchdog time test as an NSH built-in
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function.
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Specific configuration options for this example include:
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- ``CONFIG_EXAMPLES_WATCHDOG_DEVPATH`` – The path to the Watchdog device. Default:
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``/dev/watchdog0``.
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- ``CONFIG_EXAMPLES_WATCHDOG_PINGTIME`` – Time in milliseconds that the example
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will ping the watchdog before letting the watchdog expire. Default: ``5000``
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milliseconds.
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- ``CONFIG_EXAMPLES_WATCHDOG_PINGDELAY`` – Time delay between pings in
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milliseconds. Default: ``500`` milliseconds.
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- ``CONFIG_EXAMPLES_WATCHDOG_TIMEOUT`` – The watchdog timeout value in
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milliseconds before the watchdog timer expires. Default: ``2000`` milliseconds.
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