From 4c31cb57eaf1d1411c071ef74c190fffdb25be04 Mon Sep 17 00:00:00 2001 From: "J. Nick Koston" Date: Mon, 3 Nov 2025 21:45:57 -0600 Subject: [PATCH] [espnow] Add wake_loop_threadsafe() for low-latency event processing (#11696) --- esphome/components/espnow/__init__.py | 7 ++++++- esphome/components/espnow/espnow_component.cpp | 11 +++++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/esphome/components/espnow/__init__.py b/esphome/components/espnow/__init__.py index 9d2f17440c..cc2c02d4c0 100644 --- a/esphome/components/espnow/__init__.py +++ b/esphome/components/espnow/__init__.py @@ -1,6 +1,6 @@ from esphome import automation, core import esphome.codegen as cg -from esphome.components import wifi +from esphome.components import socket, wifi from esphome.components.udp import CONF_ON_RECEIVE import esphome.config_validation as cv from esphome.const import ( @@ -17,6 +17,7 @@ from esphome.core import CORE, HexInt from esphome.types import ConfigType CODEOWNERS = ["@jesserockz"] +AUTO_LOAD = ["socket"] byte_vector = cg.std_vector.template(cg.uint8) peer_address_t = cg.std_ns.class_("array").template(cg.uint8, 6) @@ -120,6 +121,10 @@ async def to_code(config): if CORE.using_arduino: cg.add_library("WiFi", None) + # ESP-NOW uses wake_loop_threadsafe() to wake the main loop from ESP-NOW callbacks + # This enables low-latency event processing instead of waiting for select() timeout + socket.require_wake_loop_threadsafe() + cg.add_define("USE_ESPNOW") if wifi_channel := config.get(CONF_CHANNEL): cg.add(var.set_wifi_channel(wifi_channel)) diff --git a/esphome/components/espnow/espnow_component.cpp b/esphome/components/espnow/espnow_component.cpp index b0d5938dba..d2f136d1c7 100644 --- a/esphome/components/espnow/espnow_component.cpp +++ b/esphome/components/espnow/espnow_component.cpp @@ -4,6 +4,7 @@ #include "espnow_err.h" +#include "esphome/core/application.h" #include "esphome/core/defines.h" #include "esphome/core/log.h" @@ -97,6 +98,11 @@ void on_send_report(const uint8_t *mac_addr, esp_now_send_status_t status) // Push the packet to the queue global_esp_now->receive_packet_queue_.push(packet); // Push always because we're the only producer and the pool ensures we never exceed queue size + + // Wake main loop immediately to process ESP-NOW send event instead of waiting for select() timeout +#if defined(USE_SOCKET_SELECT_SUPPORT) && defined(USE_WAKE_LOOP_THREADSAFE) + App.wake_loop_threadsafe(); +#endif } void on_data_received(const esp_now_recv_info_t *info, const uint8_t *data, int size) { @@ -114,6 +120,11 @@ void on_data_received(const esp_now_recv_info_t *info, const uint8_t *data, int // Push the packet to the queue global_esp_now->receive_packet_queue_.push(packet); // Push always because we're the only producer and the pool ensures we never exceed queue size + + // Wake main loop immediately to process ESP-NOW receive event instead of waiting for select() timeout +#if defined(USE_SOCKET_SELECT_SUPPORT) && defined(USE_WAKE_LOOP_THREADSAFE) + App.wake_loop_threadsafe(); +#endif } ESPNowComponent::ESPNowComponent() { global_esp_now = this; }