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[core] Simplify ESPTime::strftime() and save 20 bytes flash

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J. Nick Koston
2025-10-25 11:23:23 -07:00
parent 960c80b202
commit ace2fce3a2
1 changed files with 3 additions and 0 deletions
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esphome/core/time.h
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@@ -46,6 +46,9 @@ struct ESPTime {
/** Convert this ESPTime struct to a string as specified by the format argument. /** Convert this ESPTime struct to a string as specified by the format argument.
* @see https://en.cppreference.com/w/c/chrono/strftime * @see https://en.cppreference.com/w/c/chrono/strftime
* *
* @warning This method returns a dynamically allocated string which can cause heap fragmentation with some
* microcontrollers.
*
* @warning This method can return "ERROR" when the underlying strftime() call fails or when the * @warning This method can return "ERROR" when the underlying strftime() call fails or when the
* output exceeds 128 bytes. * output exceeds 128 bytes.
*/ */