/* special_functions.S */
/*
This file is part of the Labotage2011_Badge.
Copyright (C) 2011 Daniel Otte (daniel.otte@rub.de)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that 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 .
*/
#include
#include "usbconfig.h"
.global soft_reset
soft_reset:
cli
andi r24, 0x0F
cpi r24, 0x0F
breq 1f
bst r24, 3
bld r24, 5
ori r24, 0x08
ldi r25, 0x18
or r25, r24
sbi _SFR_IO_ADDR(PORTB), USB_CFG_DMINUS_BIT
out _SFR_IO_ADDR(WDTCR), r25
out _SFR_IO_ADDR(WDTCR), r24
1:
rjmp 1b