glitch.pio

; Copyright (c) 2022 Balázs Triszka <balika011@gmail.com>
;
; This program is free software; you can redistribute it and/or modify it
; under the terms and conditions of the GNU General Public License,
; version 2, as published by the Free Software Foundation.
;
; This program is distributed in the hope it will be useful, but WITHOUT
; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
; more details.
;
; You should have received a copy of the GNU General Public License
; along with this program.  If not, see <http://www.gnu.org/licenses/>.

.program glitch
.side_set 2

	pull                        side 0x1
	mov x, osr                  side 0x1
	pull                        side 0x1
	mov y, osr                  side 0x1

wait_for_post_loop:
	wait 1 GPIO 15              side 0x1
	wait 0 GPIO 15              side 0x1
	jmp x-- wait_for_post_loop  side 0x1

delay_pll:
	jmp y-- delay_pll           side 0x1

	pull                        side 0x3
	mov x, osr                  side 0x3
	pull                        side 0x3
	mov y, osr                  side 0x3

	wait 1 GPIO 15              side 0x3

delay_rst: ; 
	jmp x-- delay_rst           side 0x3

hold_rst:
	jmp y-- hold_rst            side 0x2

	pull                        side 0x3
	mov x, osr                  side 0x3

hold_pll:
	jmp x-- hold_pll            side 0x3

	push                        side 0x1