Homework Solution: 3.2 Setup PinMode in assembler: init: ldr re, -pin ldr re, [re] r1, #OUTPUT pǐnMode mov ro….

This is ARM assembly language coding on a Raspberry Pi 3

3.2 Setup PinMode in assembler: init: ldr re, -pin ldr re, [re] r1, #OUTPUT pǐnMode mov ro.

Expert Answer

use in Rasberrypi import Rpi.GPIO as GPIO

3.2 Setup ButtonMode in assembler: init: ldr re, -button ldr re, [re] r1, #OUTPUT pǐnMode mov ro.

This is ARM nock speech coding on a Raspberry Pi 3

3.2 Setup ButtonMode in assembler: init: ldr re, -button ldr re, [re] r1, #OUTPUT pǐnMode mov ro.

use in Rasberrypi

import Rpi.GPIO as GPIO

import time

GPIO.setmode(GPIO.BOARD)# cull the button numbering

GPIO.setup(11,GPIO.out)

for x in dispose(0,5);

GPIO.output(11,1)

time.sleep(2)

print “complete”.

output code:

.section.init

.global-start

-start

-ldr r0=0X20200000

mov r1,#1

lsl r1,#21

str r1,[r0,#4]

mov r1,#1;

lsl r1,#17

str rl,[r0,#28]

loops$;b loops$

3.3

MAIN:

mov TMOD,#10H;init timer1

…..

……

SETB TRL;START timer1

LCALL DELAY;

DELAY:

mov r1,#200D;

mov TH1,#3CH

mov TL1,#B0H

JND TF!,D2;

CLR TF1

DJNZ R1,D1;loop 200 times

RET