LibXR::HPMTimebase Class Reference

HPM MCHTMR 时间基准实现 / HPM MCHTMR based timebase implementation. More...

#include <hpm_timebase.hpp>

Inheritance diagram for LibXR::HPMTimebase:

Collaboration diagram for LibXR::HPMTimebase:

Public Member Functions
	HPMTimebase (MCHTMR_Type *timer=HPM_MCHTMR, clock_name_t clock=clock_mchtmr0)
	构造 HPM 时间基对象 / Construct an HPM timebase object.
Public Member Functions inherited from LibXR::Timebase
	Timebase ()=default
	默认构造函数。 Default constructor.
	Timebase (const Timebase &)=delete
	禁止拷贝构造。 Copy construction is disabled.
Timebase &	operator= (const Timebase &)=delete
	禁止拷贝赋值。 Copy assignment is disabled.

Additional Inherited Members
Static Public Member Functions inherited from LibXR::Timebase
static MicrosecondTimestamp	GetMicroseconds ()
	获取当前时间的微秒级时间戳。 Gets the current timestamp in microseconds.
static MillisecondTimestamp	GetMilliseconds ()
	获取当前时间的毫秒级时间戳。 Gets the current timestamp in milliseconds.
static bool	IsReady () noexcept
	检查时间基是否已经初始化。 Check whether the active timebase backend is initialized.
static void	DelayMicroseconds (uint32_t us)
	微秒级延时 / Delay in microseconds
Static Protected Member Functions inherited from LibXR::Timebase
static void	SetReady (bool ready=true) noexcept
	设置时间基就绪状态。 Set the timebase ready flag.
static void	ConfigureWrapRange (uint64_t max_valid_us, uint32_t max_valid_ms) noexcept
	配置时间戳回绕上界。 Configure the timestamp wraparound limits.
static uint64_t	GetConfiguredWrapRangeUs () noexcept
	读取当前配置的微秒回绕上界。 Read the configured microsecond wraparound limit.
static uint32_t	GetConfiguredWrapRangeMs () noexcept
	读取当前配置的毫秒回绕上界。 Read the configured millisecond wraparound limit.

Detailed Description

HPM MCHTMR 时间基准实现 / HPM MCHTMR based timebase implementation.

基于 MCHTMR 计数器提供微秒与毫秒时间戳。 Provides microsecond and millisecond timestamps using MCHTMR counter.

Definition at line 19 of file hpm_timebase.hpp.

Constructor & Destructor Documentation

HPMTimebase()

HPMTimebase::HPMTimebase	(	MCHTMR_Type *	timer = HPM_MCHTMR,
		clock_name_t	clock = clock_mchtmr0 )

构造 HPM 时间基对象 / Construct an HPM timebase object.

Parameters

timer	MCHTMR 外设基地址 / MCHTMR base address.
clock	定时器时钟源 / Clock source used by the timer.

构造时选择计数器实例并缓存输入时钟频率。 Construction selects the counter instance and caches the input clock rate.

Definition at line 22 of file hpm_timebase.cpp.

{
  g_timer = timer;
  g_clock_hz = clock_get_frequency(clock);
  ConfigureWrapRange(static_cast<uint64_t>(UINT32_MAX) * 1000ULL + 999ULL, UINT32_MAX);
  SetReady();
}

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The documentation for this class was generated from the following files:

• driver/hpm/hpm_timebase.hpp
• driver/hpm/hpm_timebase.cpp