ESP32 + AC-диммер: Guru Meditation Error и IRAM_ATTR — причины и решение 26 февр. 2026 г. 0 424 TL;DR: If your ESP32 with an AC dimmer crashes ("Guru Meditation Error" or "Cache disabled but cached memory region accessed"), the cause is that the zero-cross ISR handler is not marked with IRAM_ATT... ac-dimmer ESP32 IRAM_ATTR troubleshooting WiFi Читать далее