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Update esphome/core/scheduler.h

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
J. Nick Koston
2025-09-03 16:36:49 -05:00
committed by GitHub
parent 4192930b0f
commit 26e0151fee
1 changed files with 4 additions and 3 deletions
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esphome/core/scheduler.h
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@@ -95,9 +95,10 @@ class Scheduler {
} name_;
uint32_t interval;
// Split time to handle millis() rollover. The scheduler combines the 32-bit millis()
// with a 16-bit rollover counter to create a 48-bit time space (stored as 64-bit
// for compatibility). With 49.7 days per 32-bit rollover, the 16-bit counter
// supports 49.7 days × 65536 = ~8900 years. This ensures correct scheduling
// with a 16-bit rollover counter to create a 48-bit time space (using 32+16 bits).
// This is intentionally limited to 48 bits, not stored as a full 64-bit value.
// With 49.7 days per 32-bit rollover, the 16-bit counter supports
// 49.7 days × 65536 = ~8900 years. This ensures correct scheduling
// even when devices run for months. Split into two fields for better memory
// alignment on 32-bit systems.
uint32_t next_execution_low_; // Lower 32 bits of execution time (millis value)