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marthall/assembly_code.s

Created November 22, 2013 22:25
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assembly_code.s
.thumb
.syntax unified
.include "gpio_constants.s"
.text
.global Start
.global GPIO_ODD_IRQHandler
Start:
LOOP_START:
B LOOP_START
.thumb_func
GPIO_ODD_IRQHandler:
LDR R0, =GPIO_BASE
MOV R1, #0b100
STR R1, [R0, #PORT_SIZE * PORT_E + GPIO_PORT_DOUTTGL]
MOV R1, #0b1000000000
STR R1, [R0, #GPIO_IFC]
BX LR
NOP
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