Serial Communication at ATTiny13A (#3)

Since we need to set the baud rate. We have to use either manual delay or timer interrupt.

For now, I am trying using manual delay.



Check whether the Pin B0 is blinking using this code

.include "../tn13Adef.inc"

.cseg

.org 0x00

ldi r16, 0b00000001

out ddrb,r16

loop:

ldi r17,0xff

ldi r18,0xff

sbi PORTB,0

rcall delay

cbi PORTB,0

rcall delay

rjmp loop

delay:

dec r17

brne delay

dec r18

brne delay

ret

yup, it is