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Update the watchdog timing requirements #1155

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Merged
merged 4 commits into from
Nov 26, 2019
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Merged

Update the watchdog timing requirements #1155

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c55b0ed
Update the watchdog timing requirements
fkjagodzinski Oct 15, 2019
fed639a
Clarify slash in Watchdog.md
Oct 17, 2019
db2d2d5
Update watchdog timing requirements for deepsleep
fkjagodzinski Nov 5, 2019
325d929
Fix spelling in Watchdog.md
Nov 5, 2019
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4 changes: 3 additions & 1 deletion docs/porting/target/Watchdog.md
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Expand Up @@ -11,8 +11,10 @@ Implement the ResetReason API when implementing the Watchdog API. The ResetReaso
- Sleep and debug modes don't stop the watchdog timer from counting down.
- The function `hal_watchdog_init` is safe to call repeatedly. The function's implementation must not do anything if `hal_watchdog_init` has already initialized the hardware watchdog timer.
- `UINT32_MAX` milliseconds is the maximum allowed max_timeout `hal_watchdog_get_platform_features()` returns; minimum timeout is 1 ms.
- The watchdog should trigger at or after the timeout value.
- The uncalibrated watchdog should trigger at or after the timeout value multiplied by the frequency accuracy ratio of its oscillator (typical_frequency divided by max_frequency).
- The calibrated watchdog should trigger at or after the timeout value.
- The watchdog should trigger before twice the timeout value.
- The watchdog may trigger as late as twice the timeout value in deep sleep mode.

### Undefined behavior

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