Method cancel

src/fl/channels/spi/device.cpp.hpp:470–490

}

bool Transaction::cancel() {
    if (!pImpl || pImpl->completed) {
        return false;  // Already completed or invalid
    }

    // Note: Cancellation of in-progress DMA transfers is platform-specific
    // and not always supported. For now, we mark it as cancelled and
    // the next wait() call will handle it.

    pImpl->cancelled = true;
    pImpl->completed = true;
    pImpl->result = fl::task::Error("Transaction cancelled");

    // Clear async state in device
    if (pImpl->device && pImpl->device->pImpl) {
        pImpl->device->pImpl->async_state.active = false;
    }

    FL_LOG_SPI("Transaction: Cancelled");
    return true;
}

fl::optional<fl::task::Error> Transaction::getResult() const {
    if (!pImpl) {