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[ac_dimmer] Use a shared ESP32 GPTimer for multiple dimmers (#13523)

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Co-authored-by: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>
This commit is contained in:
Szpadel
2026-02-25 17:12:03 +01:00
committed by GitHub
parent 78ab63581b
commit 37a0cec53d
1 changed files with 13 additions and 6 deletions
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19
esphome/components/ac_dimmer/ac_dimmer.cpp
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@@ -199,12 +199,19 @@ void AcDimmer::setup() {
setTimer1Callback(&timer_interrupt);
#endif
#ifdef USE_ESP32
dimmer_timer = timer_begin(TIMER_FREQUENCY_HZ);
timer_attach_interrupt(dimmer_timer, &AcDimmerDataStore::s_timer_intr);
// For ESP32, we can't use dynamic interval calculation because the timerX functions
// are not callable from ISR (placed in flash storage).
// Here we just use an interrupt firing every 50 µs.
timer_alarm(dimmer_timer, TIMER_INTERVAL_US, true, 0);
if (dimmer_timer == nullptr) {
dimmer_timer = timer_begin(TIMER_FREQUENCY_HZ);
if (dimmer_timer == nullptr) {
ESP_LOGE(TAG, "Failed to create GPTimer for AC dimmer");
this->mark_failed();
return;
}
timer_attach_interrupt(dimmer_timer, &AcDimmerDataStore::s_timer_intr);
// For ESP32, we can't use dynamic interval calculation because the timerX functions
// are not callable from ISR (placed in flash storage).
// Here we just use an interrupt firing every 50 µs.
timer_alarm(dimmer_timer, TIMER_INTERVAL_US, true, 0);
}
#endif
}