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esphome/esphome/components/libretiny/hal.cpp
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C++

#ifdef USE_LIBRETINY
#include "core.h"
#include "esphome/core/hal.h"
#include "preferences.h"
#include <FreeRTOS.h>
#include <task.h>
// Empty libretiny namespace block to satisfy ci-custom's lint_namespace check.
// HAL functions live in namespace esphome (root) — they are not part of the
// libretiny component's API.
namespace esphome::libretiny {} // namespace esphome::libretiny
namespace esphome {
// yield(), delay(), micros(), millis(), millis_64(), delayMicroseconds(),
// arch_feed_wdt(), arch_get_cpu_cycle_count(), arch_get_cpu_freq_hz()
// inlined in components/libretiny/hal.h.
void arch_init() {
libretiny::setup_preferences();
lt_wdt_enable(10000L);
#ifdef USE_BK72XX
// BK72xx SDK creates the main Arduino task at priority 3, which is lower than
// all WiFi (4-5), LwIP (4), and TCP/IP (7) tasks. This causes ~100ms loop
// stalls whenever WiFi background processing runs, because the main task
// cannot resume until every higher-priority task finishes.
//
// By contrast, RTL87xx creates the main task at osPriorityRealtime (highest).
//
// Raise to priority 6: above WiFi/LwIP tasks (4-5) so they don't preempt the
// main loop, but below the TCP/IP thread (7) so packet processing keeps priority.
// This is safe because ESPHome yields voluntarily via wakeable_delay() and
// the Arduino mainTask yield() after each loop() iteration.
static constexpr UBaseType_t MAIN_TASK_PRIORITY = 6;
static_assert(MAIN_TASK_PRIORITY < configMAX_PRIORITIES, "MAIN_TASK_PRIORITY must be less than configMAX_PRIORITIES");
vTaskPrioritySet(nullptr, MAIN_TASK_PRIORITY);
#endif
#if LT_GPIO_RECOVER
lt_gpio_recover();
#endif
}
void arch_restart() {
lt_reboot();
while (true) {
}
}
} // namespace esphome
#endif // USE_LIBRETINY