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