8/13/2019 Ejercicio timer Assembler atmega164p

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/**

* ECIO_4.asm* GENERAR UN PWM DE 5KHZ CADA MEDIO SEGUNDO, Y ENCENDERLA O APAGARLA CON UN PULSADOR* Created: 11/18/2013 5:17:16 PM

* Author: Juan Villacrs*/

.include "m164pdef.inc"

.def tempo=R16

.def conta=R17

.def conta1=R18

.org 0x00rjmpinicio

.org 0x02rjmpencender_apagar

.org 0x01A

rjmpdesborde

inicio:

ldi tempo,0b00001000out ddrb,tempo; INTOldi tempo,0b00000000out ddrd,tempocom tempoout portd,tempo ; pull up

;aseguro pull up

in tempo,MCUCRandi tempo,0b11101111

out MCUCR,tempo

;inicio stack pointer

ldi tempo,high(ramend)out sph,tempoldi tempo,low(ramend)out spl,tempo

;configuro interrupciones externas

ldi tempo,0b00000010sts EICRA,tempoldi tempo,0b00000001

out EIMSK,tempoout EIFR,tempo

SEI

; Timer 0, 5KHz

ldi tempo,0b00000010 ; Activar con INT0 0b01000010out TCCR0A,tempo

ldi tempo,0b00000010out TCCR0B,tempoldi tempo,99

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out OCR0A,tempoldi tempo,0b00000000

sts TIMSK0,tempo

; Timer 1, 0.5 seg

ldi tempo,0b00000000 ; normal, CTCsts TCCR1A,tempo

ldi tempo,0b00001100sts TCCR1B,tempoclr temposts TCCR1C,tempoldi tempo,high(15624)

sts OCR1AH,tempoldi tempo,low(15624)sts OCR1AL,tempo

ldi tempo,0b00000000sts TIMSK1,tempo

ldi conta,0ldi conta1,0

main:rjmpmain

desborde:push r16in r16,SREGpush r16cpi conta,1breq apa_t0enc_t0:

ldi tempo,0b01000010out TCCR0A,tempo

inc contarjmp conti

apa_t0:ldi tempo,0b00000010out TCCR0A,tempoclr conta

conti:pop r16out SREG,tempopop r16

RETI

encender_apagar:

push r16in r16,SREGpush r16cpi conta1,1

breq apa_t1

enc_t1:

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ldi tempo,0b00000010

sts TIMSK1,tempoldi tempo,0b01000010out TCCR0A,tempo

inc conta1rjmp conti1

apa_t1:ldi tempo,0b00000000sts TIMSK1,tempoldi tempo,0b00000010out TCCR0A,tempo

clr conta1

conti1:

pop r16out SREG,tempopop r16

RETI

SIMULACiN

PC6/TOSC1/PCINT22 25

PC5/TDI/PCINT21 24

PC4/TDO/PCINT20 23

PC3/TMS/PCINT19 22

PC2/TCK/PCINT18 21

PC1/SDA/PCINT17 20

PC0/SCL/PCINT16 19

AVCC27

AREF29

PC7/TOSC2/PCINT23 26

PA6/ADC6/PCINT6 31

PA5/ADC5/PCINT5 32

PA4/ADC4/PCINT4 33

PA3/ADC3/PCINT3 34

PA2/ADC2/PCINT2 35

PA1/ADC1/PCINT1 36

PA0/ADC0/PCINT0 37

PA7/ADC7/PCINT7 30

PB6/MISO/PCINT142

PB5/MOSI/PCINT131

PB4/SS/OC0B/PCINT1244

PB3/AIN1/OC0A/PCINT1143

PB2/AIN0/INT2/PCINT1042

PB1/T1/CLKO/PCINT941

PB0/XCK0/T0/PCINT840

PB7/SCK/PCINT153

PD6/ICP/OC2B/PCINT3015

PD5/OC1A/PCINT2914

PD4/OC1B/XCK1/PCINT2813

PD3/INT1/TXD1/PCINT2712

PD2/INT0/RXD1/PCINT2611

PD1/TXD0/PCINT2510

PD0/RXD0/PCINT249

PD7/OC2A/PCINT3116

RESET4

XTAL1 8

XTAL2 7

U1

ATMEGA164P

A

B

C

D