tiny6410之点亮Led灯:
.global _start
_start:
ldr r0,0x70000000 //目的是把外设基地址告诉cpu
orr r0,r0,#0x13
mcr p15,0,r0,c15,c2,4 @256M(0X70000000-0x7FFFFFFF)
ldr r0,=0x7E004000 //关闭看门狗，往WTCON（0X7E004000）写0
mov r1,#0
str r1,[r0]
ldr r1,=0x7F008800 //将GPKCON0的地址赋值给r1
mov r0,#0x10000 //将GPK4做为输出
ldr r1,=0x7F008808 //使GPKDAT[4]为低电平
mov r0,#0
str r0,[r1]
halt:
b halt
调用C语言
