按照野火ISO教程上面移植ucosii的步骤进行ucosii移植时,每一步都正确,但是编译时最后出现 函数OSIntEnter();OSTimeTick();OSIntExit();BSP_Init();SysTick_init();这五个函数 declared implicitly,这五个是警告。还有一个..\..\BSP\bsp.c(23): error: #159: declaration is incompatible with previous "SysTick_init" (declared at line 12),怎么解决????