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[esp8266] Revert init() wrap — micros64() needs the overflow timer

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Arduino's micros64() reads the same overflow tracking statics that
init() sets up. Wrapping init() as a no-op would cause micros64()
to silently return wrong values after 71 minutes. The overflow timer
cost is negligible (~3 μs per 60 seconds).
This commit is contained in:
J. Nick Koston
2026-04-11 23:08:53 -10:00
parent dff7757d1e
commit bf20403558
1 changed files with 3 additions and 0 deletions
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esphome/components/esp8266/core.cpp
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@@ -132,5 +132,8 @@ extern "C" void resetPins() { // NOLINT
// Requires -Wl,--wrap=millis in build flags (added by __init__.py).
// NOLINTNEXTLINE(bugprone-reserved-identifier,cert-dcl37-c,cert-dcl51-cpp,readability-identifier-naming)
extern "C" uint32_t IRAM_ATTR __wrap_millis() { return esphome::millis(); }
// Note: Arduino's init() registers a 60-second overflow timer for micros64().
// We leave it running — wrapping init() as a no-op would break micros64()'s
// overflow tracking, and the timer's cost is negligible (~3 μs per 60 s).
#endif // USE_ESP8266