38 lines
1.0 KiB
C
Executable File
38 lines
1.0 KiB
C
Executable File
/*=============================================================================
|
|
Copyright (C) 2016 Kristina Brooks
|
|
All rights reserved.
|
|
|
|
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 2
|
|
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.
|
|
|
|
FILE DESCRIPTION
|
|
Simple timer based delay routine.
|
|
|
|
=============================================================================*/
|
|
|
|
#ifdef __arm__
|
|
#include <stdint.h>
|
|
#else
|
|
#include "common.h"
|
|
#endif
|
|
|
|
#include "../hardware.h"
|
|
|
|
|
|
void udelay(uint32_t t) {
|
|
uint32_t tv = ST_CLO;
|
|
|
|
for (;;) {
|
|
/* nop still takes a cycle i think? */
|
|
__asm__ __volatile__ ("nop" :::);
|
|
if ((ST_CLO - tv) > t)
|
|
return;
|
|
}
|
|
} |