常见泽1 发表于 2021-4-26 17:32

【复旦微FM33LC046N】时钟输出测试

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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">首先要感谢复旦微</span>FAE</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">上次时钟一篇里吐槽了复旦微的时钟功能，受到了</span>FAE<span style="font-family:宋体">的关注，教给我了</span>FOUT<span style="font-family:宋体">功能，查看了下手册，果然有两个脚是支持</span>FOUT<span style="font-family:宋体">的</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">对这些英文符号代表的意义一点印象没有</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">FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_XTLF);</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">这个还是比较准的</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">&nbsp; FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_RCLP);</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">&nbsp; FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_RCHF);</span></span></p>

<p style="text-indent:10.5pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">设置完配置看下波形</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">平均值</span>8.02M<span style="font-family:宋体">，符合标准里的值</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">&nbsp; FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_RCHF_DIV64);</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">之前测试过</span>RCHF<span style="font-family:宋体">是</span>8M<span style="font-family:宋体">，分频</span>64<span style="font-family:宋体">倍应该是</span>125KHZ<span style="font-family:宋体">左右</span>&nbsp; <span style="font-family:宋体">看波形</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">差不多</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">FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_LSCLK);</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">LSCLK<span style="font-family:宋体">通过程序选择输出</span>XTLF<span style="font-family:宋体">或者</span>LPOSC</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">两个都是低频时钟</span>32K<span style="font-family:宋体">左右的</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">FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_AHBCLK_DIV64);</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">就是</span>AHB<span style="font-family:宋体">时钟的</span>64<span style="font-family:宋体">分频</span>&nbsp; 125K</span></span></p>

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Jacktang 发表于 2021-4-26 21:46

<p>看来复旦微的FAE还是很给力的</p>

soso 发表于 2021-4-27 11:24

<p>赞复旦微 FAE反应速度。楼主继续加油</p>
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