PMC 定时器

功能特性

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• 有两组 PMC 定时器， 每组 PMC 定时器内有四个计数器

  • 休眠倒计时计数器

  • 深度休眠倒计时计数器

  • 唤醒计数器

  • 预留计数器

• 32 位宽向下计数，计数到 0 后自动停止

• 在计数到 0 之后可配置是否产生中断

• 以 SDM32K 作为时钟源

• 在计数器工作过程中可以重新设置定时器倒计时的值

API

Raw API

PMCTIMER Exported Constants

PMCTIMER Device Config

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/* PMC timer device instance for CM4/KM4 core. */
#define PMC_TIMER_DEV PMCTIMER_DEV0

/* PMC timer device instance for CM0/KM0 core. */
#define PMC_TIMER_DEV PMCTIMER_DEV1

/* PMC timer IRQ number for CM4/KM4 core. */
#define PMC_TIMER_IRQ PMC_TIMER0_IRQ

/* PMC timer IRQ number for CM0/KM0 core. */
#define PMC_TIMER_IRQ PMC_TIMER1_IRQ

/* PMC timer interrupt priority. */
#define PMC_TIMER_INT_PRIO INT_PRI_LOWEST

PMCTIMER Index

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/* PMC timer index for system active time during sleep. */
#define PMC_SLEEP_TIMER 0

/* PMC timer index for system active time during deep sleep. */
#define PMC_DSLP_TIMER 1

/* PMC timer index for setting wakeup time during sleep. */
#define PMC_WAKEUP_TIMER 2

/* Reserved PMC timer index. */
#define PMC_RSVD_TIMER 3

PMCTIMER Valid Check

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/* Bit mask for timer x configuration valid status. */
#define PMCT_BIT_TIM_VALIDx ((u32)(0x00000001 << (8 + x)))

PMCTIMER Reset

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/* Bit mask to pulse reset timer x. */
#define PMCTRESET_BIT_TIMERx ((u32)(0x00000001 << (28 + x)))

PMCTIMER Exported Functions

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u32 PMCTimerCnt_Get(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx)

Get the pmc timer current Counter value.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

返回:

Current counter value.

void PMCTimerCnt_Reset(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx)

Reset the pmc timer count down value.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

void PMCTimerCnt_Set(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx, u32 NewValue)

Set the pmc timer count down value.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

• NewValue -- New counter.

void PMCTimer_Cmd(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx, bool NewState)

Enable or disable the pmc timer counter The pmc timer group contains 4 timers for each group, all runs at 32k.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

• NewState -- New state of the PMC timer counter. This parameter can be: ENABLE or DISABLE.

void PMCTimer_INTClear(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx)

Clear the pmc timer's interrupt bits.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

void PMCTimer_INTConfig(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx, u32 NewState)

ENABLE/DISABLE the pmc timer's interrupt bits.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

• NewState -- ENABLE or DISABLE.

u32 PMCTimer_Valid_Check(PMCTIMER_TpyeDef *PMC_TIMER, u32 Timer_Idx)

Check pmctimer current state.

参数:

• PMC_TIMER -- The pointer of PMC TIMER DEV.

• Timer_Idx -- Timer index in PMC TIMER DEV. This parameter can be: 0 ~ 3.

返回:

The validation result:

• TRUE: valid

• FALSE: not valid