STM32 SPI双机通信参考

https://www.cnblogs.com/skullboyer/p/8470076.html

https://blog.csdn.net/weixin_40185666/article/details/89296940

https://blog.csdn.net/weixin_40185666/article/details/89297107?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_baidulandingword-14&spm=1001.2101.3001.4242

https://blog.csdn.net/weixin_40185666/article/details/89315019?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-2&spm=1001.2101.3001.4242

http://www.openedv.com/posts/list/43143.htm