mirror of
https://github.com/esphome/esphome.git
synced 2026-09-17 18:18:43 +00:00
J. Nick Koston
0249c30cbf
millis() uses xTaskGetTickCount (tick clock) while millis_64() uses esp_timer_get_time (hardware timer). Safe because they are never cross-compared: Scheduler::millis_64_from_() on ESP32 discards the 32-bit millis parameter and calls millis_64() directly, keeping all 64-bit scheduling on the esp_timer clock.
104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
#ifdef USE_ESP32
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#include "esphome/core/defines.h"
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#include "crash_handler.h"
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#include "esphome/core/application.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/helpers.h"
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#include "preferences.h"
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#include <esp_clk_tree.h>
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#include <esp_cpu.h>
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#include <esp_idf_version.h>
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#include <esp_ota_ops.h>
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#include <esp_task_wdt.h>
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#include <esp_timer.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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void setup(); // NOLINT(readability-redundant-declaration)
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// Weak stub for initArduino - overridden when the Arduino component is present
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extern "C" __attribute__((weak)) void initArduino() {}
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namespace esphome {
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void HOT yield() { vPortYield(); }
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// Use xTaskGetTickCount() when tick rate is 1 kHz (ESPHome's default via sdkconfig),
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// falling back to esp_timer for non-standard rates. IRAM_ATTR is required because
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// Wiegand and ZyAura call millis() from IRAM_ATTR ISR handlers on ESP32.
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// xTaskGetTickCountFromISR() is used in ISR context to satisfy the FreeRTOS API contract.
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uint32_t IRAM_ATTR HOT millis() {
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#if CONFIG_FREERTOS_HZ == 1000
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if (xPortInIsrContext()) [[unlikely]] {
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return xTaskGetTickCountFromISR();
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}
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return xTaskGetTickCount();
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#else
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return micros_to_millis(static_cast<uint64_t>(esp_timer_get_time()));
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#endif
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}
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// millis_64() stays on esp_timer — a different clock from xTaskGetTickCount(). This is
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// safe because the two are never cross-compared: millis() values are only used for
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// millis()-vs-millis() deltas (feed_wdt, warn_blocking, component start time), while
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// millis_64() is used by the Scheduler and uptime sensors. On ESP32 (USE_NATIVE_64BIT_TIME),
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// Scheduler::millis_64_from_(now) discards the 32-bit now and calls millis_64() directly,
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// so the Scheduler is internally consistent on the esp_timer clock.
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uint64_t HOT millis_64() { return micros_to_millis<uint64_t>(static_cast<uint64_t>(esp_timer_get_time())); }
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void HOT delay(uint32_t ms) { vTaskDelay(ms / portTICK_PERIOD_MS); }
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uint32_t IRAM_ATTR HOT micros() { return (uint32_t) esp_timer_get_time(); }
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void IRAM_ATTR HOT delayMicroseconds(uint32_t us) { delay_microseconds_safe(us); }
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void arch_restart() {
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esp_restart();
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// restart() doesn't always end execution
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while (true) { // NOLINT(clang-diagnostic-unreachable-code)
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yield();
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}
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}
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void arch_init() {
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#ifdef USE_ESP32_CRASH_HANDLER
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// Read crash data from previous boot before anything else
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esp32::crash_handler_read_and_clear();
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#endif
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// Enable the task watchdog only on the loop task (from which we're currently running)
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esp_task_wdt_add(nullptr);
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// Handle OTA rollback: mark partition valid immediately unless USE_OTA_ROLLBACK is enabled,
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// in which case safe_mode will mark it valid after confirming successful boot.
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#ifndef USE_OTA_ROLLBACK
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esp_ota_mark_app_valid_cancel_rollback();
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#endif
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}
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void HOT arch_feed_wdt() { esp_task_wdt_reset(); }
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uint32_t arch_get_cpu_cycle_count() { return esp_cpu_get_cycle_count(); }
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uint32_t arch_get_cpu_freq_hz() {
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uint32_t freq = 0;
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esp_clk_tree_src_get_freq_hz(SOC_MOD_CLK_CPU, ESP_CLK_TREE_SRC_FREQ_PRECISION_CACHED, &freq);
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return freq;
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}
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TaskHandle_t loop_task_handle = nullptr; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
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void loop_task(void *pv_params) {
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setup();
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while (true) {
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App.loop();
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}
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}
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extern "C" void app_main() {
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initArduino();
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esp32::setup_preferences();
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#if CONFIG_FREERTOS_UNICORE
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xTaskCreate(loop_task, "loopTask", ESPHOME_LOOP_TASK_STACK_SIZE, nullptr, 1, &loop_task_handle);
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#else
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xTaskCreatePinnedToCore(loop_task, "loopTask", ESPHOME_LOOP_TASK_STACK_SIZE, nullptr, 1, &loop_task_handle, 1);
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#endif
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}
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} // namespace esphome
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#endif // USE_ESP32
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