Function stub_attach_timer_handler

src/platforms/stub/isr_stub.hpp:275–317

// =============================================================================

inline int stub_attach_timer_handler(const isr_config_t& config, isr_handle_t* out_handle) FL_NOEXCEPT {
        if (!config.handler) {
            STUB_LOG("attachTimerHandler: handler is null");
            return -1;  // Invalid parameter
        }

        if (config.frequency_hz == 0) {
            STUB_LOG("attachTimerHandler: frequency_hz is 0");
            return -2;  // Invalid frequency
        }

        // Allocate handle data
        auto handle_owner = fl::make_unique<stub_isr_handle_data>();
        auto* handle_data = handle_owner.get();
        if (!handle_data) {
            STUB_LOG("attachTimerHandler: failed to allocate handle data");
            return -3;  // Out of memory
        }

        handle_data->mIsTimer = true;
        handle_data->mUserHandler = config.handler;
        handle_data->mUserData = config.user_data;
        handle_data->mFrequencyHz = config.frequency_hz;
        handle_data->mIsOneShot = (config.flags & ISR_FLAG_ONE_SHOT) != 0;

        // Add to global timer thread manager (unless manual tick mode)
        if (!(config.flags & ISR_FLAG_MANUAL_TICK)) {
            TimerThreadManager::instance().add_handler(handle_data);
        }

        // Release ownership - pointer is now managed by the C API (TimerThreadManager + out_handle)
        handle_owner.release();

        // Populate output handle
        if (out_handle) {
            out_handle->platform_handle = handle_data;
            out_handle->handler = config.handler;
            out_handle->user_data = config.user_data;
            out_handle->platform_id = STUB_PLATFORM_ID;
        }

        return 0;  // Success
}

inline int stub_attach_external_handler(u8 pin, const isr_config_t& config, isr_handle_t* out_handle) FL_NOEXCEPT {
        (void)pin;  // Unused in stub implementation