【AT32F421测评】+ 开箱及快速上手
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">之前申请了</font></span></span></span></span></span></span></span></span></b><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">雅特力超值型</font>M4内核AT32F421</span></span></span></span></span></span></span></span></b><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">评测</font> <font face="微软雅黑">竟然成功了,</font></span></span></span></span></span></span></span></span></b></span></span><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">所以我将按照我之前申请的评测计划展开评测</font>,首先是开箱</span></span></span></span></span></span></span></span></b></span></span></p><p><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal">AT-START-F421</span></span></span></span></span></span></span></span></b></span></span><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">包装跟</font>STM32的Nucleo板的包装类似 采用透明风格,背后印上一些基本信息 此类测试板似乎都可以支持Arduino的接口,还是不错的。</span></span></span></span></span></span></span></span></b><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">但是这里我要说一点</font> ，AT-START-F421的包装中的两个凸点我感觉有一些问题 因为它不能起到像Nucleo板包装上凸点的作用,也就是将开发板牢牢固定在塑料壳上面,它的作用我估计也就是将板子按在包装上的纸片上 但由于没有很牢 板子依旧可以上下轻微晃动,当然了 这些都是些小问题。</span></span></span></span></span></span></span></span></b></span></span></p>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">拿出板子</font> <font face="微软雅黑">因为我手头有</font>STM32G071的开发板，所以来对比一下 ，总体来讲，STM32的板子体积相对更小一点，布局更加紧凑 但AT-START-F421上加了VIN 7V-12V的接口 所以相对面积更大，两者同样采用白色基板 更美观，AT-START-F421由于面积更大 丝印会更加多，不仅在正面标出了GPIO的标号，同时，在背面标出了正面标不下的丝印，如板子上引出的USART1口 还有ARM标准的20脚JTAG接口（需要焊上排针），还有AT-LINK接口（需要焊上排针），这样对我们使用者来说更友好。</span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">这里要讲一下板载的</font>3种调试接口：分别是AT-LINK-EZ AT-LINK和JTAG</span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal">AT-LINK-EZ有调试，编程，虚拟串口的功能，当然了 作为简易版，它没有离线模式，同时，它支持拆下，可以给其他雅特力的单片机烧录程序，这点还是不错的。</span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal">AT-LINK就是雅特力标准版的烧录接口。</span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal">JTAG使板子支持原先我们开发其他单片机的烧录器，这点点赞。</span></span></span></span></span></span></span></span></b></span></span></p>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">但这里给雅特力的官方提个建议，因为开发板增加了一个输入</font>7V-12V的接口，还有一个GND的测试环，然后它的三个引脚会比较长，这会导致板子放到平面上放不平，当然了,</span></span></span></span></span></span></span></span></b></span></span><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">我们可以把脚剪了就行，但最好不需要我们再加工一下。</font></span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">最后，又来到熟悉的电灯环节,首先连接上MICRO_USB电源线，可以依次看到</font>LED2-LED4以流水灯的方式亮起，按一下USER按键，流水灯的变化频率会发生变化，能看到这些现象，说明板子是没问题的。</span></span></span></span></span></span></span></span></b></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><b><span style="font-size:14.0000pt"><span style="background:#ffffff"><span style="font-family:微软雅黑"><span style="color:#343434"><span style="letter-spacing:0.0000pt"><span style="font-weight:bold"><span style="text-transform:none"><span style="font-style:normal"><font face="微软雅黑">总的来说感觉还是不错的，开发板该有的都有，还有一些细心的设计，方便开发者</font></span></span></span></span></span></span></span></span></b></span></span></p>
<p>感谢分享！期待后续测评！！！</p>
<p>这个板子比STM32G071的板子个头大点</p>
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<p>赶紧拿来替换stm32主控芯片，上涨的价格已经无法承受了</p>
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