针对的是EK的线路板 #add by wkj for LED test Debug mov r0,#0 sub r0,r0,#2544 @;-2544=0xfffff610,PIOB_OER mov r1,#7 @;all LED will light str r1,[r0,#0] mov r2,#7 @;clean all led str r2,[r0,#0xfffff630-0xfffff610] @PIOB_SODR str r1,[r0,#0xfffff634-0xfffff610] @PIOB_CODR #end add