zhangjs0322的专栏

某系统中对中断的打开、关闭函数如下：static __inline int wsn_DisableInterrupt(void){ register int retval, temp; __asm__ volatile ( "mrs %0, cpsr\n" "\torr %1, %0, #0xC

转自【http://blog.youkuaiyun.com/ipmux/article/details/19167605】