在头文件直接声明就行，不需要加extern前缀
编译FatFS时遇到 Error[Pe040]: expected an identifier 详细位置在下面一行. typedef enum {FALSE = 0,TRUE}BOOL; 经检查系其他地方已经定义了TRUE,F ...,21ic电子技术开发论坛
while((srclen--))的条件括号已经完成了，你应该是少了一个(括号，导致后续的条件被当成以&&开头的表达式了，所以报这个缺少表达式，因为&&前面缺少
(d1) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses. If kernel debugger is available get stack backtrace. Arguments: Arg1: 000000000011092...