GD32L233C-START 评测-（Last）雷达总体演示
<p style="text-align:justify"> </p><p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">之前已经实现了</span>USART<span style="font-family:宋体">的</span><a href="https://bbs.eeworld.com.cn/thread-1200137-1-1.html" style="color:blue; text-decoration:underline" target="_blank" title="（3）UART之DMA加IDLE中断不定长字节接收">DMA<span lang="EN-US" style="font-family:宋体">加</span>IDLE<span lang="EN-US" style="font-family:宋体">中断不定长字节接收</span></a><span style="font-family:宋体">，加上</span><a href="https://bbs.eeworld.com.cn/thread-1195248-1-1.html" style="color:blue; text-decoration:underline" target="_blank" title="（2）液晶显示模块LM6059驱动"><span lang="EN-US" style="font-family:宋体">液晶显示模块</span>LM6059<span lang="EN-US" style="font-family:宋体">驱动</span></a><span style="font-family:宋体">。下面将所有功能进行组合。</span></span></span></p>
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<p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">雷达数据处理方面，雷达数据相关分析可以参考我之前的测评的帖子：</span><a href="https://bbs.eeworld.com.cn/thread-1106400-1-1.html" style="color:blue; text-decoration:underline"><span lang="EN-US" style="font-family:宋体">【</span>TI<span lang="EN-US" style="font-family:宋体">毫米波雷达测评】</span>_6_AWR1843BOOST UART<span lang="EN-US" style="font-family:宋体">输出数据分析</span></a><span style="font-family:宋体">。</span>USART<span style="font-family:宋体">接收数据仅仅只接收了波形数据，实际雷达模块的数据是可配置的，还有更多的信息。处理函数为</span>usart_comm_protocol()<span style="font-family:宋体">，</span></span></span></p>
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<p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">液晶显示波形方面，仅仅显示一屏波形数据，绘图函数为</span>LCD_DrawEchoOriginal()<span style="font-family:宋体">：</span></span></span></p>
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<p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">单片机总体处理的大概流程如下：</span></span></span></p>
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<p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">需要说明的是这里面还增加了</span>LPTIME<span style="font-family:宋体">做</span>PWM<span style="font-family:宋体">，用于控制</span>4-20mA<span style="font-family:宋体">输出，这里就直接接了</span>LED<span style="font-family:宋体">和万用表来指示。由于只在室内，如果直接关联雷达距离的话也不明显，所以直接每</span>1<span style="font-family:宋体">秒接到一个雷达数据包就变一点。</span>LPTIME<span style="font-family:宋体">例程采用的是</span>32K<span style="font-family:宋体">时钟，</span>PWM<span style="font-family:宋体">输出频率固定为</span>1k<span style="font-family:宋体">，然后改变高电平的时间长短来控制输出的电压。测试视频如下：</span></span></span></p>
<p style="text-indent:21.0pt; text-align:justify"><iframe allowfullscreen="true" frameborder="0" height="450" src="//player.bilibili.com/player.html?bvid=1MF411u7Fj&page=1" style="background:#eee;margin-bottom:10px;" width="700"></iframe><br />
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<p style="text-indent:21.0pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">下面是开发板的连线，比较乱：</span></span></span></p>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri","sans-serif""><span style="font-family:宋体">最后是一个简单的演示:</span></span></span></p>
<p style="text-align:justify"><iframe allowfullscreen="true" frameborder="0" height="450" src="//player.bilibili.com/player.html?bvid=13B4y1m73F&page=1" style="background:#eee;margin-bottom:10px;" width="700"></iframe><br />
附件是代码，将它们放入GD32L23x_Demo_Suites_V1.1.0\GD32L23x_Demo_Suites_V1.1.0\GD32L233R_EVAL_Demo_Suites\Projects\06_USART_DMA里面即可。</p>
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表示非常感兴趣。雷达传感器，目前很有前途的。
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