LPTIM_Configuration
[LPTIM Exported Functions]

Configure the LPTIM instance output (LPTIMx_OUT)

Note:

This function must be called when the LPTIM instance is disabled.

Regarding the LPTIM output polarity the change takes effect immediately, so the output default value will change immediately after the polarity is re-configured, even before the timer is enabled. CFGR WAVE LL_LPTIM_ConfigOutput
CFGR WAVPOL LL_LPTIM_ConfigOutput

Parameters:

LPTIMx	Low-Power Timer instance
Waveform	This parameter can be one of the following values: LL_LPTIM_OUTPUT_WAVEFORM_PWM LL_LPTIM_OUTPUT_WAVEFORM_SETONCE
Polarity	This parameter can be one of the following values: LL_LPTIM_OUTPUT_POLARITY_REGULAR LL_LPTIM_OUTPUT_POLARITY_INVERSE

Return values:

None

Definition at line 493 of file stm32l4xx_ll_lptim.h.

Disable the LPTIM instance CR ENABLE LL_LPTIM_Disable.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

None

Definition at line 326 of file stm32l4xx_ll_lptim.h.

Enable the LPTIM instance.

Note:

After setting the ENABLE bit, a delay of two counter clock is needed before the LPTIM instance is actually enabled. CR ENABLE LL_LPTIM_Enable

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

None

Definition at line 315 of file stm32l4xx_ll_lptim.h.

Get actual auto reload value ARR ARR LL_LPTIM_GetAutoReload.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

AutoReload

Value between 0 and 0xFFFF

Definition at line 401 of file stm32l4xx_ll_lptim.h.

Get actual compare value CMP CMP LL_LPTIM_GetCompare.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

CompareValue

Value between 0 and 0xFFFF

Definition at line 428 of file stm32l4xx_ll_lptim.h.

Get actual counter value.

Note:

When the LPTIM instance is running with an asynchronous clock, reading the LPTIMx_CNT register may return unreliable values. So in this case it is necessary to perform two consecutive read accesses and verify that the two returned values are identical. CNT CNT LL_LPTIM_GetCounter

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Counter

value

Definition at line 443 of file stm32l4xx_ll_lptim.h.

Get the counter mode CFGR COUNTMODE LL_LPTIM_GetCounterMode.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Returned

value can be one of the following values: LL_LPTIM_COUNTER_MODE_INTERNAL LL_LPTIM_COUNTER_MODE_EXTERNAL

Definition at line 471 of file stm32l4xx_ll_lptim.h.

Get actual output polarity CFGR WAVPOL LL_LPTIM_GetPolarity.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Returned

value can be one of the following values: LL_LPTIM_OUTPUT_POLARITY_REGULAR LL_LPTIM_OUTPUT_POLARITY_INVERSE

Definition at line 519 of file stm32l4xx_ll_lptim.h.

Get actual prescaler division ratio.

CFGR PRESC LL_LPTIM_GetPrescaler

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Returned

value can be one of the following values: LL_LPTIM_PRESCALER_DIV1 LL_LPTIM_PRESCALER_DIV2 LL_LPTIM_PRESCALER_DIV4 LL_LPTIM_PRESCALER_DIV8 LL_LPTIM_PRESCALER_DIV16 LL_LPTIM_PRESCALER_DIV32 LL_LPTIM_PRESCALER_DIV64 LL_LPTIM_PRESCALER_DIV128

Definition at line 563 of file stm32l4xx_ll_lptim.h.

Get the LPTIM registers update mode CFGR PRELOAD LL_LPTIM_GetUpdateMode.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Returned

value can be one of the following values: LL_LPTIM_UPDATE_MODE_IMMEDIATE LL_LPTIM_UPDATE_MODE_ENDOFPERIOD

Definition at line 372 of file stm32l4xx_ll_lptim.h.

Get actual waveform shape CFGR WAVE LL_LPTIM_GetWaveform.

Parameters:

LPTIMx

Low-Power Timer instance

Return values:

Returned

value can be one of the following values: LL_LPTIM_OUTPUT_WAVEFORM_PWM LL_LPTIM_OUTPUT_WAVEFORM_SETONCE

Definition at line 506 of file stm32l4xx_ll_lptim.h.

Set the auto reload value.

Note:

The LPTIMx_ARR register content must only be modified when the LPTIM is enabled

After a write to the LPTIMx_ARR register a new write operation to the same register can only be performed when the previous write operation is completed. Any successive write before the ARROK flag be set, will lead to unpredictable results.

autoreload value be strictly greater than the compare value. ARR ARR LL_LPTIM_SetAutoReload

Parameters:

LPTIMx	Low-Power Timer instance
AutoReload	Value between 0 and 0xFFFF

Return values:

None

Definition at line 390 of file stm32l4xx_ll_lptim.h.

Set the compare value.

Note:

After a write to the LPTIMx_CMP register a new write operation to the same register can only be performed when the previous write operation is completed. Any successive write before the CMPOK flag be set, will lead to unpredictable results. CMP CMP LL_LPTIM_SetCompare

Parameters:

LPTIMx	Low-Power Timer instance
CompareValue	Value between 0 and 0xFFFF

Return values:

None

Definition at line 417 of file stm32l4xx_ll_lptim.h.

Set the counter mode (selection of the LPTIM counter clock source).

Note:

The counter mode can be set only when the LPTIM instance is disabled. CFGR COUNTMODE LL_LPTIM_SetCounterMode

Parameters:

LPTIMx	Low-Power Timer instance
CounterMode	This parameter can be one of the following values: LL_LPTIM_COUNTER_MODE_INTERNAL LL_LPTIM_COUNTER_MODE_EXTERNAL

Return values:

None

Definition at line 458 of file stm32l4xx_ll_lptim.h.

Set LPTIM input 1 source (default GPIO).

OR OR_0 LL_LPTIM_SetInput1Src OR OR_1 LL_LPTIM_SetInput1Src

Parameters:

LPTIMx	Low-Power Timer instance
Src	This parameter can be one of the following values: LL_LPTIM_INPUT1_SRC_GPIO LL_LPTIM_INPUT1_SRC_COMP1 LL_LPTIM_INPUT1_SRC_COMP2 LL_LPTIM_INPUT1_SRC_COMP1_COMP2

Return values:

None

Definition at line 580 of file stm32l4xx_ll_lptim.h.

Set LPTIM input 2 source (default GPIO).

OR OR_0 LL_LPTIM_SetInput2Src

Parameters:

LPTIMx	Low-Power Timer instance
Src	This parameter can be one of the following values: LL_LPTIM_INPUT2_SRC_GPIO LL_LPTIM_INPUT2_SRC_COMP2

Return values:

None

Definition at line 594 of file stm32l4xx_ll_lptim.h.

Set actual prescaler division ratio.

Note:

This function must be called when the LPTIM instance is disabled.

When the LPTIM is configured to be clocked by an internal clock source and the LPTIM counter is configured to be updated by active edges detected on the LPTIM external Input1, the internal clock provided to the LPTIM must be not be prescaled. CFGR PRESC LL_LPTIM_SetPrescaler

Parameters:

LPTIMx	Low-Power Timer instance
Prescaler	This parameter can be one of the following values: LL_LPTIM_PRESCALER_DIV1 LL_LPTIM_PRESCALER_DIV2 LL_LPTIM_PRESCALER_DIV4 LL_LPTIM_PRESCALER_DIV8 LL_LPTIM_PRESCALER_DIV16 LL_LPTIM_PRESCALER_DIV32 LL_LPTIM_PRESCALER_DIV64 LL_LPTIM_PRESCALER_DIV128

Return values:

None

Definition at line 544 of file stm32l4xx_ll_lptim.h.

Set the LPTIM registers update mode (enable/disable register preload)

Note:

This function must be called when the LPTIM instance is disabled. CFGR PRELOAD LL_LPTIM_SetUpdateMode

Parameters:

LPTIMx	Low-Power Timer instance
UpdateMode	This parameter can be one of the following values: LL_LPTIM_UPDATE_MODE_IMMEDIATE LL_LPTIM_UPDATE_MODE_ENDOFPERIOD

Return values:

None

Definition at line 359 of file stm32l4xx_ll_lptim.h.

Starts the LPTIM counter in the desired mode.

Note:

LPTIM instance must be enabled before starting the counter.

It is possible to change on the fly from One Shot mode to Continuous mode. CR CNTSTRT LL_LPTIM_StartCounter
CR SNGSTRT LL_LPTIM_StartCounter

Parameters:

LPTIMx	Low-Power Timer instance
OperatingMode	This parameter can be one of the following values: LL_LPTIM_OPERATING_MODE_CONTINUOUS LL_LPTIM_OPERATING_MODE_ONESHOT

Return values:

None

Definition at line 344 of file stm32l4xx_ll_lptim.h.