forked from xuos/xiuos
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* Copyright 2018 Canaan Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* @file sleep.c
|
|
* @brief add from Canaan k210 SDK
|
|
* https://canaan-creative.com/developer
|
|
* @version 1.0
|
|
* @author AIIT XUOS Lab
|
|
* @date 2021-04-25
|
|
*/
|
|
|
|
#include "sleep.h"
|
|
#include "sysctl.h"
|
|
|
|
int usleep(uint64_t usec)
|
|
{
|
|
uint64_t cycle = read_cycle();
|
|
uint64_t nop_all = usec * SysctlClockGetFreq(SYSCTL_CLOCK_CPU) / 1000000UL;
|
|
while (1)
|
|
{
|
|
if(read_cycle() - cycle >= nop_all)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int msleep(uint64_t msec)
|
|
{
|
|
return (unsigned int)usleep(msec * 1000);
|
|
}
|
|
|
|
unsigned int sleep(unsigned int seconds)
|
|
{
|
|
return (unsigned int)msleep(seconds * 1000);
|
|
}
|
|
|