;
; Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
;
; SPDX-License-Identifier: BSD-3-Clause
;

; Note that if you modify squarewave.c to include this program, you'll also
; need to set the wrap registers yourself. This would be handled for you by
; squarewave_program_get_default_config().
.pio_version 0 // only requires PIO version 0

.program squarewave_wrap
; Like squarewave, but use the state machine's .wrap hardware instead of an
; explicit jmp. This is a free (0-cycle) unconditional jump.

    set pindirs, 1   ; Set pin to output
.wrap_target
	set pins, 1 [1]  ; Drive pin high and then delay for one cycle
	set pins, 0 [1]  ; Drive pin low and then delay for one cycle
.wrap