Inheritance diagram for LibXR::MSPM0Timebase:

Collaboration diagram for LibXR::MSPM0Timebase:

Public Member Functions
MicrosecondTimestamp	_get_microseconds () override
	纯虚函数，获取当前时间的微秒级时间戳（由派生类实现）。 Pure virtual function for obtaining the current timestamp in microseconds (implemented by derived classes).

MillisecondTimestamp	_get_milliseconds () override
	纯虚函数，获取当前时间的毫秒级时间戳（由派生类实现）。 Pure virtual function for obtaining the current timestamp in milliseconds (implemented by derived classes).

Public Member Functions inherited from LibXR::Timebase
	Timebase (uint64_t max_valid_us=UINT64_MAX, uint32_t max_valid_ms=UINT32_MAX)
	默认构造函数，初始化全局时间基指针。 Default constructor, initializing the global timebase pointer.

Static Public Member Functions
static void	OnSysTickInterrupt ()

static void	Sync (uint32_t ticks)

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 void	DelayMicroseconds (uint32_t us)
	微秒级延时 / Delay in microseconds

Static Public Attributes
static volatile uint32_t	sys_tick_ms

Static Public Attributes inherited from LibXR::Timebase
static Timebase *	timebase = nullptr
	静态指针，用于存储全局时间基对象。 Static pointer storing the global timebase instance.

Detailed Description

Definition at line 9 of file mspm0_timebase.hpp.

Constructor & Destructor Documentation

◆ MSPM0Timebase()

MSPM0Timebase::MSPM0Timebase ( )

Definition at line 5 of file mspm0_timebase.cpp.

    : Timebase(static_cast<uint64_t>(UINT32_MAX) * 1000 + 999, UINT32_MAX)
{
}

Member Function Documentation

◆ _get_microseconds()

MicrosecondTimestamp MSPM0Timebase::_get_microseconds ( )

overridevirtual

纯虚函数，获取当前时间的微秒级时间戳（由派生类实现）。 Pure virtual function for obtaining the current timestamp in microseconds (implemented by derived classes).

该函数需要在派生类中实现，以提供具体的时间获取机制。 This function must be implemented in derived classes to provide the actual time retrieval mechanism.

Returns: 返回当前的时间戳（单位：微秒）。 Returns the current timestamp (in microseconds).

Implements LibXR::Timebase.

Definition at line 10 of file mspm0_timebase.cpp.

{
  do
  {
    uint32_t tick_old = sys_tick_ms;
    uint32_t val_old = DL_SYSTICK_getValue();
    uint32_t tick_new = sys_tick_ms;
    uint32_t val_new = DL_SYSTICK_getValue();
 
    auto tick_diff = tick_new - tick_old;
 
    uint32_t cycles_per_ms = DL_SYSTICK_getPeriod() + 1;
 
    switch (tick_diff)
    {
      case 0:
        return MicrosecondTimestamp(
            static_cast<uint64_t>(tick_new) * 1000 +
            static_cast<uint64_t>(DL_SYSTICK_getPeriod() - val_old) * 1000 /
                cycles_per_ms);
      case 1:
        /* 中断发生在两次读取之间 / Interrupt happened between two reads */
        return MicrosecondTimestamp(
            static_cast<uint64_t>(tick_new) * 1000 +
            static_cast<uint64_t>(DL_SYSTICK_getPeriod() - val_new) * 1000 /
                cycles_per_ms);
      default:
        /* 中断耗时过长（超过1ms），程序异常 / Indicates that interrupt took more than
         * 1ms, an error case */
        continue;
    }
  } while (true);
}

◆ _get_milliseconds()

MillisecondTimestamp MSPM0Timebase::_get_milliseconds ( )

overridevirtual

纯虚函数，获取当前时间的毫秒级时间戳（由派生类实现）。 Pure virtual function for obtaining the current timestamp in milliseconds (implemented by derived classes).

该函数需要在派生类中实现，以提供具体的时间获取机制。 This function must be implemented in derived classes to provide the actual time retrieval mechanism.

Returns: 返回当前的时间戳（单位：毫秒）。 Returns the current timestamp (in milliseconds).

Implements LibXR::Timebase.

Definition at line 44 of file mspm0_timebase.cpp.

44{ return sys_tick_ms; }

◆ OnSysTickInterrupt()

void MSPM0Timebase::OnSysTickInterrupt ( )

static

Definition at line 45 of file mspm0_timebase.cpp.

45{ sys_tick_ms++; }

◆ Sync()

void MSPM0Timebase::Sync ( uint32_t ticks )

static

Definition at line 46 of file mspm0_timebase.cpp.

46{ sys_tick_ms = ticks; }

Field Documentation

◆ sys_tick_ms

volatile uint32_t LibXR::MSPM0Timebase::sys_tick_ms

inlinestatic

Definition at line 22 of file mspm0_timebase.hpp.

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

driver/mspm0/mspm0_timebase.hpp
driver/mspm0/mspm0_timebase.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes