在学习2407时遇到这样的定义,看不懂,请达人指教一下,谢谢 #define STR(x) #x
#define OUTMAC(address,data) asm(" LDPK _"STR(data)); asm(" OUT _"STR(data) "," STR(address))
#define INMAC(address,data) asm(" LDPK _"STR(data)); asm(" IN _"STR(data) "," STR(address)) 这个LDPK,什么意思?这个OUTMA作用是? |