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J. Nick Koston
89c43b49c2
Use the ESP-IDF UART driver's uart_set_select_notif_callback() to wake the main loop directly from the UART ISR via vTaskNotifyGiveFromISR(), eliminating the FreeRTOS trampoline task and event queue that were previously needed when wake_loop_threadsafe() used a UDP loopback socket. With fast lwip select, the main loop sleeps on ulTaskNotifyTake(), so the ISR-safe vTaskNotifyGiveFromISR() can wake it directly. Saves ~2.6KB RAM per UART instance with wake-on-RX enabled: - 2,240 bytes FreeRTOS task stack - ~340 bytes event queue (20 entries + control block) - 8 bytes QueueHandle_t + TaskHandle_t fields Also adds Application::wake_loop_isrsafe() as the ISR-safe counterpart to wake_loop_threadsafe(), backed by esphome_lwip_wake_main_loop_from_isr().
