ATtiny13 >> Assembly

Button

---

DDRB(I/O方向)、PORTB(I/O輸出)

P.S. I/O資料變更或者讀取，必須使用in、out指令或者sbi、cbi指令

main.s

  .equ PINB,  0x16
  .equ DDRB,  0x17
  .equ PORTB, 0x18
 
  .equ LED,   1
  .equ BTN,   0
 
  .org 0x0000
  rjmp main
 
  .org 0x0010
main:
  sbi DDRB, LED
  cbi DDRB, BTN
  sbi PORTB, LED
  sbi PORTB, BTN
 
loop:
  in r0, PINB
  sbrs r0, BTN
  cbi PORTB, LED
  sbrc r0, BTN
  sbi PORTB, LED
  rjmp loop

編譯和燒錄

$ avr-as -mmcu=attiny13 -o main.o main.s
$ avr-ld -o main.elf main.o
$ avr-objcopy --output-target=ihex main.elf main.ihex
$ sudo avrdude -c usbasp -p t13 -B 1024 -U flash:w:main.ihex:i

完成

返回上一頁