LETIMER - Low Energy Timer#

LETIMER_RepeatMode_TypeDef#

LETIMER_RepeatMode_TypeDef

Repeat mode.

LETIMER_UFOA_TypeDef#

LETIMER_UFOA_TypeDef

Underflow action on output.

LETIMER_CompareGet#

uint32_t LETIMER_CompareGet (LETIMER_TypeDef * letimer, unsigned int comp)

Get the LETIMER compare register value.

Returns

• A compare register value, 0 if invalid register selected.

LETIMER_CompareSet#

void LETIMER_CompareSet (LETIMER_TypeDef * letimer, unsigned int comp, uint32_t value)

Set the LETIMER compare register value.

Note

• The setting of a compare register requires synchronization into the low frequency domain. If the same register is modified before a previous update has completed, this function will stall until the previous synchronization has completed. This only applies to the Gecko Family. See comments in the LETIMER_Sync() internal function call.

LETIMER_CounterGet#

uint32_t LETIMER_CounterGet (LETIMER_TypeDef * letimer)

Get LETIMER counter value.

Returns

• Current LETIMER counter value.

LETIMER_CounterSet#

void LETIMER_CounterSet (LETIMER_TypeDef * letimer, uint32_t value)

Set LETIMER counter value.

LETIMER_Enable#

void LETIMER_Enable (LETIMER_TypeDef * letimer, bool enable)

Start/stop LETIMER.

Note

• The enabling/disabling of the LETIMER modifies the LETIMER CMD register which requires synchronization into the low-frequency domain. If this register is modified before a previous update to the same register has completed, this function will stall until the previous synchronization has completed. This only applies to the Gecko Family. See comments in the LETIMER_Sync() internal function call.

LETIMER_Init#

void LETIMER_Init (LETIMER_TypeDef * letimer, const LETIMER_Init_TypeDef * init)

Initialize LETIMER.

Note that the compare/repeat values must be set separately with LETIMER_CompareSet() and LETIMER_RepeatSet(). That should probably be done prior using this function if configuring the LETIMER to start when initialization is complete.

Note

• The initialization of the LETIMER modifies the LETIMER CTRL/CMD registers which require synchronization into the low-frequency domain. If any of those registers are modified before a previous update to the same register has completed, this function will stall until the previous synchronization has completed. This only applies to the Gecko Family. See comments in the LETIMER_Sync() internal function call.

LETIMER_IntClear#

void LETIMER_IntClear (LETIMER_TypeDef * letimer, uint32_t flags)

Clear one or more pending LETIMER interrupts.

LETIMER_IntDisable#

void LETIMER_IntDisable (LETIMER_TypeDef * letimer, uint32_t flags)

Disable one or more LETIMER interrupts.

LETIMER_IntEnable#

void LETIMER_IntEnable (LETIMER_TypeDef * letimer, uint32_t flags)

Enable one or more LETIMER interrupts.

Note

• Depending on the use, a pending interrupt may already be set prior to enabling the interrupt. To ignore a pending interrupt, consider using LETIMER_IntClear() prior to enabling the interrupt.

LETIMER_IntGet#

uint32_t LETIMER_IntGet (LETIMER_TypeDef * letimer)

Get pending LETIMER interrupt flags.

Note

• Event bits are not cleared by the use of this function.

Returns

• LETIMER interrupt sources pending. A bitwise logic OR combination of valid interrupt flags for the LETIMER module (LETIMER_IF_nnn).

LETIMER_IntGetEnabled#

uint32_t LETIMER_IntGetEnabled (LETIMER_TypeDef * letimer)

Get enabled and pending LETIMER interrupt flags.

Useful for handling more interrupt sources in the same interrupt handler.

Note

• Event bits are not cleared by the use of this function.

Returns

• Pending and enabled LETIMER interrupt sources. Return value is the bitwise AND combination of

  • the OR combination of enabled interrupt sources in LETIMER_IEN_nnn register (LETIMER_IEN_nnn) and

  • the OR combination of valid interrupt flags of the LETIMER module (LETIMER_IF_nnn).

LETIMER_IntSet#

void LETIMER_IntSet (LETIMER_TypeDef * letimer, uint32_t flags)

Set one or more pending LETIMER interrupts from SW.

LETIMER_Lock#

void LETIMER_Lock (LETIMER_TypeDef * letimer)

Lock LETIMER registers.

Note

• When LETIMER registers are locked LETIMER_EN, LETIMER_SWRST, LETIMER_CTRL, LETIMER_CMD, LETIMER_CNT, LETIMER_COMPx, LETIMER_TOP, LETIMER_TOPBUFF, LETIMER_REPx, and PRSMODE registers cannot be written to.

LETIMER_Unlock#

void LETIMER_Unlock (LETIMER_TypeDef * letimer)

Unlock LETIMER registers.

LETIMER_RepeatGet#

uint32_t LETIMER_RepeatGet (LETIMER_TypeDef * letimer, unsigned int rep)

Get the LETIMER repeat register value.

Returns

• Repeat register value, 0 if invalid register selected.

LETIMER_RepeatSet#

void LETIMER_RepeatSet (LETIMER_TypeDef * letimer, unsigned int rep, uint32_t value)

Set the LETIMER repeat counter register value.

Note

• The setting of a repeat counter register requires synchronization into the low-frequency domain. If the same register is modified before a previous update has completed, this function will stall until the previous synchronization has completed. This only applies to the Gecko Family. See comments in the LETIMER_Sync() internal function call.

LETIMER_Reset#

void LETIMER_Reset (LETIMER_TypeDef * letimer)

Reset LETIMER to the same state that it was in after a hardware reset.

Note

• The ROUTE register is NOT reset by this function to allow for a centralized setup of this feature.

LETIMER_SyncWait#

void LETIMER_SyncWait (LETIMER_TypeDef * letimer)

Wait for the LETIMER to complete all synchronization of register changes and commands.

LETIMER_TopSet#

void LETIMER_TopSet (LETIMER_TypeDef * letimer, uint32_t value)

Set the LETIMER top value.

Note

• The LETIMER is a down-counter, so when the counter reaches 0 then the top value will be loaded into the counter. This function can be used to set the top value.

If the LETIMER is not already configured to use a top value then this function will enable that functionality for the user.

LETIMER_TopGet#

uint32_t LETIMER_TopGet (LETIMER_TypeDef * letimer)

Get the current LETIMER top value.

Returns

• The top value. This will be a 16 bit value on series-0 and series-1 devices and a 24 bit value on series-2 devices.

LETIMER_INIT_DEFAULT#

#define LETIMER_INIT_DEFAULT

Default configuration for LETIMER initialization structure.