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我打算用UART与超声波测距进行通信,请问UARTcharget函数是自动等待发送的么????还有UARTCharGetNonBlocking与UARTCharGet



我打算用UART与超声波测距进行通信,请问UARTcharget函数是自动等待发送的么????还有UARTCharGetNonBlocking与UARTCharGet有什么区别???谢谢