deleted 50 characters in body

Source Link

edited Jun 18, 2023 at 22:21

41
4

I've been trying this for days without success...

I need to turn on a LED on portb when a button in portd is pushed. Cabling works, I've tested it with Arduino IDE and it works like a charm.

This is what I got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

It is much easier with sbis, if I got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But I got this error compiling:

.pio\build\uno\src\main.o: In function `main':
(.text+0x8): undefined reference to `portd'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

I've been trying this for days without success...

I need to turn on a LED on portb when a button in portd is pushed. Cabling works, I've tested it with Arduino IDE and it works like a charm.

This is what I got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

It is much easier with sbis, if I got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But I got this error compiling:

.pio\build\uno\src\main.o: In function `main':
(.text+0x8): undefined reference to `portd'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

I've been trying this for days without success...

I need to turn on a LED on portb when a button in portd is pushed. Cabling works, I've tested it with Arduino IDE and it works like a charm.

This is what I got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

It is much easier with sbis, if I got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But I got this error compiling:

.pio\build\uno\src\main.o: In function `main':
(.text+0x8): undefined reference to `portd'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

Fixed typos and code formatting

Source Link

edited Jun 18, 2023 at 18:07

Greenonline

3.2k
7
37
49

Arduino UNOUno R3 assembly code to push a button and turn on a ledLED

I've been trying this for days without success...

I need to turn on a ledLED on portb when a button in portd is pushed. (cablingCabling works, i'veI've tested it with arduino ideArduino IDE and it works like a charm).

This is what iI got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

UPDATE

Uhm, ok,It is much easier with sbissbis, if iI got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But iI got this error compiling: .pio\build\uno\src\main.o: In function main': (.text+0x8): undefined reference to portd' collect2.exe: error: ld returned 1 exit status *** [.pio\build\uno\firmware.elf] Error 1

.pio\build\uno\src\main.o: In function `main':
(.text+0x8): undefined reference to `portd'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR_SFR_IO_ADDR

Arduino UNO R3 assembly code to push a button and turn on a led

I've been trying this for days without success...

I need to turn on a led on portb when a button in portd is pushed. (cabling works, i've tested it with arduino ide and it works like a charm).

This is what i got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

UPDATE

Uhm, ok, much easier with sbis, if i got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But i got this error compiling: .pio\build\uno\src\main.o: In function main': (.text+0x8): undefined reference to portd' collect2.exe: error: ld returned 1 exit status *** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

Arduino Uno R3 assembly code to push a button and turn on a LED

I've been trying this for days without success...

I need to turn on a LED on portb when a button in portd is pushed. Cabling works, I've tested it with Arduino IDE and it works like a charm.

This is what I got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

It is much easier with sbis, if I got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But I got this error compiling:

.pio\build\uno\src\main.o: In function `main':
(.text+0x8): undefined reference to `portd'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

Became Hot Network Question

occurred Jun 17, 2023 at 1:51

added 50 characters in body

Source Link

edited Jun 16, 2023 at 22:07

mcflurry

41
4

I've been trying this for days without success...

I need to turn on a led on portb when a button in portd is pushed. (cabling works, i've tested it with arduino ide and it works like a charm).

This is what i got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

UPDATE

Uhm, ok, much easier with sbis, if i got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But i got this error compiling: .pio\build\uno\src\main.o: In function main': (.text+0x8): undefined reference to portd' collect2.exe: error: ld returned 1 exit status *** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

I've been trying this for days without success...

I need to turn on a led on portb when a button in portd is pushed. (cabling works, i've tested it with arduino ide and it works like a charm).

This is what i got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

UPDATE

Uhm, ok, much easier with sbis, if i got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But i got this error compiling: .pio\build\uno\src\main.o: In function main': (.text+0x8): undefined reference to portd' collect2.exe: error: ld returned 1 exit status *** [.pio\build\uno\firmware.elf] Error 1

I've been trying this for days without success...

I need to turn on a led on portb when a button in portd is pushed. (cabling works, i've tested it with arduino ide and it works like a charm).

This is what i got so far:

.global main
.equ LED, PB5
.equ BUTTON, PD3
main:
   ldi r22,0xff                    ;all bits in portb are output
   out _SFR_IO_ADDR(DDRB),r22      
   ldi r21,0x00                    ;all bits in portd are input
   out _SFR_IO_ADDR(DDRD),r21
   ldi r19, 0b00000000             ;unpushed button
   ldi r18, 0b00100000             ;pushed button
   eor r16, r16
loop:
   out BUTTON, r16                 ;read button to r16
   cp r16, r18                     ;compare r16 with r19 (button on)
   cbi _SFR_IO_ADDR(PORTB),LED
   breq loop                       ;go back to loop
   sbi _SFR_IO_ADDR(PORTB),LED     ;if z=1, turn led on turn led on
   rjmp loop                       ;back to loop

UPDATE

Uhm, ok, much easier with sbis, if i got it right...

#include <avr/io.h>
.equ LED, PB5
.global main
ldi r16,0xff
out _SFR_IO_ADDR(DDRB),r16
ldi r16,0x00
out _SFR_IO_ADDR(DDRD),r16

main:
    sbis portd, 3
    rjmp ledoff
    ldi r16,0xff
    sbi _SFR_IO_ADDR(PORTB),LED   ; turn on led
    rjmp main
ledoff:
    ldi r16,0x00
    cbi _SFR_IO_ADDR(PORTB),LED   ; turn off led
    rjmp main

But i got this error compiling: .pio\build\uno\src\main.o: In function main': (.text+0x8): undefined reference to portd' collect2.exe: error: ld returned 1 exit status *** [.pio\build\uno\firmware.elf] Error 1

UPDATE2

OK got it working with _SFR_IO_ADDR

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mcflurry

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Arduino UNOUno R3 assembly code to push a button and turn on a ledLED

Arduino UNO R3 assembly code to push a button and turn on a led

Arduino Uno R3 assembly code to push a button and turn on a LED