三星2410test中2410addr.h文件内有下面一个宏定义
#define ClearPending(bit) { rSRCPND = bit; rINTPND = bit; rINTPND; } //Wait until rINTPND is changed for the case that the ISR is very short.
例如使用 ClearPending(BIT_DMA0); // #define BIT_DMA0 (0x1<<17)
不理解 rINTPND; 这一行是什么意思? 忘各位大侠赐教!!谢谢!!! |