usart-puts.asm

2021/05/30

This program provides a small subroutine to put a string via USART. This code is a part of pAVRlib.

In examples/ you'll find a small test program.

Requirement

usart.asm

Subroutine

`void USART_PUTS(char *str)` (in: r25:r24, out: (none))

puts a string via USART. r25:r24 is a start address of the string to be sent. The string must be null-teminated.

Example

	ldi	r25, high(STR_HELLO)
	ldi	r24, low (STR_HELLO)
	rcall	USART_PUTS


STR_HELLO:
	.db	"Hello, World!", 0x0d, 0x0a, 0