/**
* @brief Configure the LPTIMx peripheral according to the specified parameters.
* @note LL_LPTIM_Init can only be called when the LPTIM instance is disabled.
* @note LPTIMx can be disabled using unitary function @ref LL_LPTIM_Disable().
* @param LPTIMx LP Timer Instance
* @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: LPTIMx instance has been initialized
* - ERROR: LPTIMx instance hasn't been initialized
*/
ErrorStatus LL_LPTIM_Init(LPTIM_TypeDef * LPTIMx, LL_LPTIM_InitTypeDef* LPTIM_InitStruct)
{
ErrorStatus result = SUCCESS;
/* The LPTIMx_CFGR register must only be modified when the LPTIM is disabled
(ENABLE bit is reset to 0).
*/
if (LL_LPTIM_IsEnabled(LPTIMx))
{
result = ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(LPTIMx));
assert_param(IS_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource));
assert_param(IS_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler));
assert_param(IS_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform));
assert_param(IS_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->Polarity));
/* Set CKSEL bitfield according to ClockSource value */
/* Set PRESC bitfield according to Prescaler value */
/* Set WAVE bitfield according to Waveform value */
/* Set WAVEPOL bitfield according to Polarity value */
MODIFY_REG(LPTIMx->CFGR,
(LPTIM_CFGR_CKSEL | LPTIM_CFGR_PRESC | LPTIM_CFGR_WAVE| LPTIM_CFGR_WAVPOL),
LPTIM_InitStruct->ClockSource | \
LPTIM_InitStruct->Prescaler | \
LPTIM_InitStruct->Waveform | \
LPTIM_InitStruct->Polarity);
}
return result;
}
/**
* @brief Initializes the LPTIMx peripheral according to the specified parameters
* in the LPTIM_InitStruct.
* @param LPTIMx: where x can be 1.
* @param LPTIM_InitStruct: pointer to an LPTIM_InitTypeDef structure that contains
* the configuration information for the specified LPTIM peripheral.
* @retval None
*
* @note It is mandatory to disable the peripheral to use this function.
*/
void LPTIM_Init(LPTIM_TypeDef* LPTIMx, LPTIM_InitTypeDef* LPTIM_InitStruct)
{
uint32_t tmpreg1 = 0;
/* Check the parameters */
assert_param(IS_LPTIM_ALL_PERIPH(LPTIMx));
assert_param(IS_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->LPTIM_ClockSource));
assert_param(IS_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->LPTIM_Prescaler));
assert_param(IS_LPTIM_WAVEFORM(LPTIM_InitStruct->LPTIM_Waveform));
assert_param(IS_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->LPTIM_OutputPolarity));
/* Get the LPTIMx CFGR value */
tmpreg1 = LPTIMx->CFGR;
/* Clear CKSEL, PRESC, WAVE and WAVEPOL bits */
tmpreg1 &= CFGR_INIT_CLEAR_MASK;
/* Set or Reset CKSEL bit according to LPTIM_ClockSource value */
/* Set or Reset PRESC bits according to LPTIM_Prescaler value */
/* Set or Reset WAVE bit according to LPTIM_Waveform value */
/* Set or Reset WAVEPOL bit according to LPTIM_OutputPolarity value */
tmpreg1 |= (LPTIM_InitStruct->LPTIM_ClockSource | LPTIM_InitStruct->LPTIM_Prescaler
|LPTIM_InitStruct->LPTIM_Waveform | LPTIM_InitStruct->LPTIM_OutputPolarity);
/* Write to LPTIMx CFGR */
LPTIMx->CFGR = tmpreg1;
}
/**
* @brief Configures the Waveform shape.
* @param LPTIMx: where x can be 1.
* @param LPTIM_Waveform: the selected waveform shape.
* This parameter can be:
* @arg LPTIM_Waveform_PWM_OnePulse : PWM/One Pulse is selected
* @arg LPTIM_Waveform_SetOnce : Set once is selected
* @retval None
*
* @note It is mandatory to disable the peripheral to use this function.
*/
void LPTIM_ConfigWaveform(LPTIM_TypeDef* LPTIMx, uint32_t LPTIM_Waveform)
{
/* Check the parameters */
assert_param(IS_LPTIM_ALL_PERIPH(LPTIMx));
assert_param(IS_LPTIM_WAVEFORM(LPTIM_Waveform));
/* Clear the WAVE bit */
LPTIMx->CFGR &= ~(LPTIM_CFGR_CKFLT);
/* Set or Reset the WAVE bit according to LPTIM_Waveform */
LPTIMx->CFGR |= (LPTIM_Waveform);
}
