luckfox-pico-sdk/sysdrv/source/mcu/rt-thread/components/drivers/cputime/cputime.c
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

91 lines
1.9 KiB
C

/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-12-23 Bernard first version
*/
#include <rtdevice.h>
#include <rtthread.h>
static const struct rt_clock_cputime_ops *_cputime_ops = RT_NULL;
/**
* The clock_cpu_getres() function shall return the resolution of CPU time, the
* number of nanosecond per tick.
*
* @return the number of nanosecond per tick
*/
float clock_cpu_getres(void)
{
if (_cputime_ops)
return _cputime_ops->cputime_getres();
rt_set_errno(-ENOSYS);
return 0;
}
/**
* The clock_cpu_gettime() function shall return the current value of cpu time tick.
*
* @return the cpu tick
*/
uint32_t clock_cpu_gettime(void)
{
if (_cputime_ops)
return _cputime_ops->cputime_gettime();
rt_set_errno(-ENOSYS);
return 0;
}
/**
* The clock_cpu_microsecond() fucntion shall return the microsecond according to
* cpu_tick parameter.
*
* @param cpu_tick the cpu tick
*
* @return the microsecond
*/
uint32_t clock_cpu_microsecond(uint32_t cpu_tick)
{
float unit = clock_cpu_getres();
return (uint32_t)((cpu_tick * unit) / 1000);
}
/**
* The clock_cpu_microsecond() fucntion shall return the millisecond according to
* cpu_tick parameter.
*
* @param cpu_tick the cpu tick
*
* @return the millisecond
*/
uint32_t clock_cpu_millisecond(uint32_t cpu_tick)
{
float unit = clock_cpu_getres();
return (uint32_t)((cpu_tick * unit) / (1000 * 1000));
}
/**
* The clock_cpu_seops() function shall set the ops of cpu time.
*
* @return always return 0.
*/
int clock_cpu_setops(const struct rt_clock_cputime_ops *ops)
{
_cputime_ops = ops;
if (ops)
{
RT_ASSERT(ops->cputime_getres != RT_NULL);
RT_ASSERT(ops->cputime_gettime != RT_NULL);
}
return 0;
}