方案一:(小宋单片机开发板提取出来的)
方案二:
方案三:
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文档为doc格式
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=a29f9d0f825c80279df8e3d766636a95&sign=37ea4f6ac0&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=23&ipr={"t":"img","r":"r_4","w":"553.73","h":"415.62","dataType":"png","c":"word/media/image1.png","imgOriW":830,"imgOriH":623})
![](https://wkrtcs.bdimg.com/rtcs/image?w=547.00&md5sum=a29f9d0f825c80279df8e3d766636a95&sign=37ea4f6ac0&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=23&ipr={"t":"img","r":"r_4","w":"547.00","h":"223.00","dataType":"png","c":"word/media/image2.png","imgOriW":547,"imgOriH":223})
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=a29f9d0f825c80279df8e3d766636a95&sign=37ea4f6ac0&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=23&ipr={"t":"img","r":"r_4","w":"553.73","h":"451.32","dataType":"png","c":"word/media/image3.png","imgOriW":757,"imgOriH":617})
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=a29f9d0f825c80279df8e3d766636a95&sign=37ea4f6ac0&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=23&ipr={"t":"img","r":"r_4","w":"553.73","h":"399.79","dataType":"png","c":"word/media/image4.png","imgOriW":615,"imgOriH":444})
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=a29f9d0f825c80279df8e3d766636a95&sign=37ea4f6ac0&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=23&ipr={"t":"img","r":"r_4","w":"553.73","h":"545.91","dataType":"png","c":"word/media/image5.png","imgOriW":638,"imgOriH":629})
