LPC17xx单片机，已经屏蔽掉操作寄存器，用户只要调用h文件里面的内联函数即可操作串口1！但是注意需要先把地址强制转换为结构体指针作为参数使用！-LPC17xx microcontroller, has masked the operation register, users simply call the h file inside the inline functions to operate Serial 1! But note that you need to first address cast to a structure pointer as an argument to use!