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RP2040 and RP2350 have different maximum watchdog delays #2500

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@lurch lurch commented Jun 2, 2025

RP2040-E1 doesn't apply to RP2350 😉 I spotted this whilst investigating #2497

@lurch lurch added documentation Improvements or additions to documentation hardware_watchdog labels Jun 2, 2025
@lurch lurch mentioned this pull request Jun 2, 2025
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lurch commented Jun 3, 2025

Updated and force-pushed

@@ -124,7 +131,7 @@ bool watchdog_enable_caused_reboot(void);
* \brief Returns the number of microseconds before the watchdog will reboot the chip.
* \ingroup hardware_watchdog
*
* \if rp2040_specicifc
* \if rp2040_specific
* On RP2040 this method returns the last value set instead of the remaining time due to a h/w bug.
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@kilograham Do you know which hardware bug this is referring to? The RP2040 datasheet lists RP2040-E1 (which doesn't cover this) as the only watchdog-related errata.

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Seems like I'd forgotten about #1492 🤦

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This seems a bit better

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