我添加了串口的驱动,但是为什么串口可以正常发送数据,但是无法接收数据,无法进入到接收的回调函数内部?
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但是无法接收数据,无法进入到接收的回调函数内部?
在调试时能否进入到read相关的代码中,我没有在上面代码中看到UART_open 的操作,串口读写参考下面的说明: