>len</span>();
        <span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> {
            <span class="macro">await</span><span class="macro">!</span>(<span class="ident">spi</span>.<span class="ident">send</span>(<span class="ident">buffer</span>[<span class="ident">i</span>]))<span class="question-mark">?</span>;
            <span class="ident">buffer</span>[<span class="ident">i</span>] <span class="op">=</span> <s