<pre style="max-width: 100%;"><code class="cpp hljs" codemark="1"><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;reg52.h&gt;</span> </span> <span class="hljs-meta">#<span class="hljs-meta-keyword">define</span> uint unsigned int</span> { <span class="hljs-keyword">unsigned</span> <span class="hljs-keyword">char</span> i; { } <span class="hljs-comment">//串口初始化</span> { TMOD=<span class="hljs-number">0x20</span>; TL1=<span class="hljs-number">0xfd</span>; EA=<span class="hljs-number">1</span>; } <span class="hljs-comment">//串口发送程序</span> { <span class="hljs-keyword">while</span>(ti==<span class="hljs-number">0</span>); } { <span class="hljs-keyword">while</span>(RI==<span class="hljs-number">0</span>); <span class="hljs-keyword">return</span> re; { <span class="hljs-keyword">while</span>(<span class="hljs-number">1</span>) receive(); { { <span class="hljs-keyword">for</span>(num=<span class="hljs-number">0</span>;num&lt;<span class="hljs-number">8</span>;num++) P2=dat1; DELAY(); } <span class="hljs-keyword">else</span> P2=<span class="hljs-number">0xff</span>; } }</code></pre><p><br></p>