init1.s

来自「an2410试验程序,可以试验板子正确与否」· S 代码 · 共 41 行

 
 AREA LED,CODE,READONLY 
WTCON        EQU  0x53000000  ;Watch-dog timer mode 
INTMSK       EQU  0x4a000008    ;Interrupt mask control
INTSUBMSK    EQU  0x4a00001c    ;Interrupt sub mask
GPFCON       EQU  0x56000050     ;Port F control
GPFDAT       EQU  0x56000054     ;Port F data
 ENTRY
star 
 LDR R0,=WTCON;看门狗关闭
 LDR R1,=0x00
 str r1,[r0]
 
 ldr r0,=INTMSK;中断关闭
 ldr r1,=0xffffffff
 str r1,[r0]
 
 ldr r0,=INTSUBMSK;扩展中断关闭
 ldr r1,=0x7ff
 str r1,[r0]
 LDR     r0, =src        ; r0 = pointer to source block
 LDR     r1, =dst        ; r1 = pointer to destination block
led_on 
 ldr r0,=GPFCON
 ldr r1,=0x5500
 str r1,[r0]
 ldr r0,=GPFDAT
 ldr r1,=0x10
 str r1,[r0]

 b led_on


 AREA BlockData, DATA, READWRITE

src     DCD     1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8,1,2,3,4
dst     DCD     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

 END