2018-06-04 STM32 RS232

https://blog.csdn.net/kobesdu/article/details/48022427

https://blog.csdn.net/wshngyf/article/details/45897603    简单学习STM32串口232

https://blog.csdn.net/heirenheiren/article/details/40896845    Stm32RS232串口通信——中断接收发送数据 源代码

https://blog.csdn.net/eric_lmy/article/details/52232716     stm32控制2.4G芯片的应用

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