AP_HAL.h 分析 #include <stdint.h>#include "AP_HAL_Namespace.h"#include "AP_HAL_Boards.h" --->>> 板子选择比如 HAL_BOARD_CHIBIOS#include "AP_HAL_Macros.h"#include "AP_HAL_Main.h"/**< hal 模块的类集合，所有的类都是纯虚

1. class AP_HAL::AP_HAL，该接口类聚合了所有提供给应用层的硬件接口 class AP_HAL::HAL {public:HAL(AP_HAL::UARTDriver* _uartA, // consoleAP_HAL::UARTDriver* _uartB, // 1st GPSAP_HAL::UARTDriver* _uartC, // telem1AP_HAL::UA