PSoc4平台上使用串口功能的例子，包含整个工程文件，串口使用115200波特率通信，中断接收模式，功能是将接收到的字符直接返回发送方。-Examples of using the serial port function on PSoc4 platform contains the entire project file, use 115200 baud serial communication, interrupt reception mode, the function is to rec