chrono.hpp

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 Chris Leishman
 
#pragma once
 
#include <chrono>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
 
namespace idfxx::chrono {
 
template<class Rep, class Period>
[[nodiscard]] constexpr TickType_t ticks(const std::chrono::duration<Rep, Period>& d) {
    return pdMS_TO_TICKS(std::chrono::ceil<std::chrono::milliseconds>(d).count());
}
 
struct tick_clock {
    using rep = TickType_t;
    using period = std::ratio<1, configTICK_RATE_HZ>;
    using duration = std::chrono::duration<rep, period>;
    using time_point = std::chrono::time_point<tick_clock>;
    static constexpr bool is_steady = true;
 
    [[nodiscard]] static time_point now() noexcept { return time_point{duration{xTaskGetTickCount()}}; }
 
    [[nodiscard]] static time_point now_from_isr() noexcept { return time_point{duration{xTaskGetTickCountFromISR()}}; }
};
 
 
} // namespace idfxx::chrono