140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
#pragma once
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/// @file wake.h
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/// Platform-specific main loop wake primitives.
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/// Always available on all platforms — no opt-in needed.
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#include "esphome/core/defines.h"
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#include "esphome/core/hal.h"
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#if defined(USE_ESP32) || defined(USE_LIBRETINY)
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#include "esphome/core/main_task.h"
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#endif
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#ifdef USE_ESP8266
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#include <coredecls.h>
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#elif defined(USE_RP2040)
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#include <hardware/sync.h>
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#include <pico/time.h>
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#endif
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namespace esphome {
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// === Wake flag for ESP8266/RP2040 ===
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#if defined(USE_ESP8266) || defined(USE_RP2040)
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// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
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extern volatile bool g_main_loop_woke;
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#endif
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// === ESP32 / LibreTiny (FreeRTOS) ===
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#if defined(USE_ESP32) || defined(USE_LIBRETINY)
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/// Wake the main loop from any context (ISR or task).
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/// always_inline so callers placed in IRAM keep the whole wake path in IRAM.
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__attribute__((always_inline)) inline void wake_main_task_any_context() {
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if (in_isr_context()) {
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BaseType_t px_higher_priority_task_woken = pdFALSE;
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esphome_main_task_notify_from_isr(&px_higher_priority_task_woken);
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#ifdef portYIELD_FROM_ISR
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portYIELD_FROM_ISR(px_higher_priority_task_woken);
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#else
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// ARM9 FreeRTOS port (BK72xx) does not define portYIELD_FROM_ISR; the IRQ
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// exit sequence performs the context switch if one was requested.
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(void) px_higher_priority_task_woken;
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#endif
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} else {
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esphome_main_task_notify();
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}
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}
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/// IRAM_ATTR entry points — defined in wake.cpp.
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void wake_loop_isrsafe(BaseType_t *px_higher_priority_task_woken);
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void wake_loop_any_context();
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inline void wake_loop_threadsafe() { esphome_main_task_notify(); }
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namespace internal {
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inline void wakeable_delay(uint32_t ms) {
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if (ms == 0) {
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yield();
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return;
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}
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ulTaskNotifyTake(pdTRUE, pdMS_TO_TICKS(ms));
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}
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} // namespace internal
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// === ESP8266 ===
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#elif defined(USE_ESP8266)
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/// Inline implementation — IRAM callers inline this directly.
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inline void ESPHOME_ALWAYS_INLINE wake_loop_impl() {
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g_main_loop_woke = true;
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esp_schedule();
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}
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/// IRAM_ATTR entry point for ISR callers — defined in wake.cpp.
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void wake_loop_any_context();
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/// Non-ISR: always inline.
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inline void wake_loop_threadsafe() { wake_loop_impl(); }
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/// ISR-safe: no task_woken arg because ESP8266 has no FreeRTOS. Caller must be IRAM_ATTR.
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inline void ESPHOME_ALWAYS_INLINE wake_loop_isrsafe() { wake_loop_impl(); }
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namespace internal {
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inline void wakeable_delay(uint32_t ms) {
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if (ms == 0) {
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delay(0);
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return;
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}
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if (g_main_loop_woke) {
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g_main_loop_woke = false;
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return;
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}
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esp_delay(ms, []() { return !g_main_loop_woke; });
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}
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} // namespace internal
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// === RP2040 ===
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#elif defined(USE_RP2040)
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inline void wake_loop_any_context() {
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g_main_loop_woke = true;
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__sev();
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}
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inline void wake_loop_threadsafe() { wake_loop_any_context(); }
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/// RP2040 wakeable delay uses file-scope state (alarm callback + flag) — defined in wake.cpp.
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namespace internal {
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void wakeable_delay(uint32_t ms);
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} // namespace internal
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// === Host / Zephyr / other ===
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#else
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#ifdef USE_HOST
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/// Host: wakes select() via UDP loopback socket. Defined in wake.cpp.
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void wake_loop_threadsafe();
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#else
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/// Zephyr is currently the only platform without a wake mechanism.
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/// wake_loop_threadsafe() is a no-op and wakeable_delay() falls back to delay().
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/// TODO: implement proper Zephyr wake using k_poll / k_sem or similar.
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inline void wake_loop_threadsafe() {}
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#endif
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inline void wake_loop_any_context() { wake_loop_threadsafe(); }
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namespace internal {
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inline void wakeable_delay(uint32_t ms) {
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if (ms == 0) {
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yield();
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return;
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}
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delay(ms);
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}
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} // namespace internal
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#endif
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} // namespace esphome
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