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stm32h7xx_hal_lptim.c
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/**
******************************************************************************
* @file stm32h7xx_hal_lptim.c
* @author MCD Application Team
* @brief LPTIM HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Low Power Timer (LPTIM) peripheral:
* + Initialization and de-initialization functions.
* + Start/Stop operation functions in polling mode.
* + Start/Stop operation functions in interrupt mode.
* + Reading operation functions.
* + Peripheral State functions.
*
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The LPTIM HAL driver can be used as follows:
(#)Initialize the LPTIM low level resources by implementing the
HAL_LPTIM_MspInit():
(++) Enable the LPTIM interface clock using __HAL_RCC_LPTIMx_CLK_ENABLE().
(++) In case of using interrupts (e.g. HAL_LPTIM_PWM_Start_IT()):
(+++) Configure the LPTIM interrupt priority using HAL_NVIC_SetPriority().
(+++) Enable the LPTIM IRQ handler using HAL_NVIC_EnableIRQ().
(+++) In LPTIM IRQ handler, call HAL_LPTIM_IRQHandler().
(#)Initialize the LPTIM HAL using HAL_LPTIM_Init(). This function
configures mainly:
(++) The instance: LPTIM1 or LPTIM2.
(++) Clock: the counter clock.
(+++) Source : it can be either the ULPTIM input (IN1) or one of
the internal clock; (APB, LSE, LSI or MSI).
(+++) Prescaler: select the clock divider.
(++) UltraLowPowerClock : To be used only if the ULPTIM is selected
as counter clock source.
(+++) Polarity: polarity of the active edge for the counter unit
if the ULPTIM input is selected.
(+++) SampleTime: clock sampling time to configure the clock glitch
filter.
(++) Trigger: How the counter start.
(+++) Source: trigger can be software or one of the hardware triggers.
(+++) ActiveEdge : only for hardware trigger.
(+++) SampleTime : trigger sampling time to configure the trigger
glitch filter.
(++) OutputPolarity : 2 opposite polarities are possible.
(++) UpdateMode: specifies whether the update of the autoreload and
the compare values is done immediately or after the end of current
period.
(++) Input1Source: Source selected for input1 (GPIO or comparator output).
(++) Input2Source: Source selected for input2 (GPIO or comparator output).
Input2 is used only for encoder feature so is used only for LPTIM1 instance.
(#)Six modes are available:
(++) PWM Mode: To generate a PWM signal with specified period and pulse,
call HAL_LPTIM_PWM_Start() or HAL_LPTIM_PWM_Start_IT() for interruption
mode.
(++) One Pulse Mode: To generate pulse with specified width in response
to a stimulus, call HAL_LPTIM_OnePulse_Start() or
HAL_LPTIM_OnePulse_Start_IT() for interruption mode.
(++) Set once Mode: In this mode, the output changes the level (from
low level to high level if the output polarity is configured high, else
the opposite) when a compare match occurs. To start this mode, call
HAL_LPTIM_SetOnce_Start() or HAL_LPTIM_SetOnce_Start_IT() for
interruption mode.
(++) Encoder Mode: To use the encoder interface call
HAL_LPTIM_Encoder_Start() or HAL_LPTIM_Encoder_Start_IT() for
interruption mode. Only available for LPTIM1 instance.
(++) Time out Mode: an active edge on one selected trigger input rests
the counter. The first trigger event will start the timer, any
successive trigger event will reset the counter and the timer will
restart. To start this mode call HAL_LPTIM_TimeOut_Start_IT() or
HAL_LPTIM_TimeOut_Start_IT() for interruption mode.
(++) Counter Mode: counter can be used to count external events on
the LPTIM Input1 or it can be used to count internal clock cycles.
To start this mode, call HAL_LPTIM_Counter_Start() or
HAL_LPTIM_Counter_Start_IT() for interruption mode.
(#) User can stop any process by calling the corresponding API:
HAL_LPTIM_Xxx_Stop() or HAL_LPTIM_Xxx_Stop_IT() if the process is
already started in interruption mode.
(#) De-initialize the LPTIM peripheral using HAL_LPTIM_DeInit().
*** Callback registration ***
=============================================
[..]
The compilation define USE_HAL_LPTIM_REGISTER_CALLBACKS when set to 1
allows the user to configure dynamically the driver callbacks.
[..]
Use Function HAL_LPTIM_RegisterCallback() to register a callback.
HAL_LPTIM_RegisterCallback() takes as parameters the HAL peripheral handle,
the Callback ID and a pointer to the user callback function.
[..]
Use function HAL_LPTIM_UnRegisterCallback() to reset a callback to the
default weak function.
HAL_LPTIM_UnRegisterCallback takes as parameters the HAL peripheral handle,
and the Callback ID.
[..]
These functions allow to register/unregister following callbacks:
(+) MspInitCallback : LPTIM Base Msp Init Callback.
(+) MspDeInitCallback : LPTIM Base Msp DeInit Callback.
(+) CompareMatchCallback : Compare match Callback.
(+) AutoReloadMatchCallback : Auto-reload match Callback.
(+) TriggerCallback : External trigger event detection Callback.
(+) CompareWriteCallback : Compare register write complete Callback.
(+) AutoReloadWriteCallback : Auto-reload register write complete Callback.
(+) DirectionUpCallback : Up-counting direction change Callback.
(+) DirectionDownCallback : Down-counting direction change Callback.
[..]
By default, after the Init and when the state is HAL_LPTIM_STATE_RESET
all interrupt callbacks are set to the corresponding weak functions:
examples HAL_LPTIM_TriggerCallback(), HAL_LPTIM_CompareMatchCallback().
[..]
Exception done for MspInit and MspDeInit functions that are reset to the legacy weak
functionalities in the Init/DeInit only when these callbacks are null
(not registered beforehand). If not, MspInit or MspDeInit are not null, the Init/DeInit
keep and use the user MspInit/MspDeInit callbacks (registered beforehand)
[..]
Callbacks can be registered/unregistered in HAL_LPTIM_STATE_READY state only.
Exception done MspInit/MspDeInit that can be registered/unregistered
in HAL_LPTIM_STATE_READY or HAL_LPTIM_STATE_RESET state,
thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
In that case first register the MspInit/MspDeInit user callbacks
using HAL_LPTIM_RegisterCallback() before calling DeInit or Init function.
[..]
When The compilation define USE_HAL_LPTIM_REGISTER_CALLBACKS is set to 0 or
not defined, the callback registration feature is not available and all callbacks
are set to the corresponding weak functions.
@endverbatim
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup LPTIM LPTIM
* @brief LPTIM HAL module driver.
* @{
*/
#ifdef HAL_LPTIM_MODULE_ENABLED
#if defined (LPTIM1) || defined (LPTIM2) || defined (LPTIM3) || defined (LPTIM4) || defined (LPTIM5)
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @addtogroup LPTIM_Private_Constants
* @{
*/
#define TIMEOUT 1000UL /* Timeout is 1s */
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
#if (USE_HAL_LPTIM_REGISTER_CALLBACKS == 1)
static void LPTIM_ResetCallback(LPTIM_HandleTypeDef *lptim);
#endif /* USE_HAL_LPTIM_REGISTER_CALLBACKS */
static HAL_StatusTypeDef LPTIM_WaitForFlag(const LPTIM_HandleTypeDef *hlptim, uint32_t flag);
/* Exported functions --------------------------------------------------------*/
/** @defgroup LPTIM_Exported_Functions LPTIM Exported Functions
* @{
*/
/** @defgroup LPTIM_Exported_Functions_Group1 Initialization/de-initialization functions
* @brief Initialization and Configuration functions.
*
@verbatim
==============================================================================
##### Initialization and de-initialization functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Initialize the LPTIM according to the specified parameters in the
LPTIM_InitTypeDef and initialize the associated handle.
(+) DeInitialize the LPTIM peripheral.
(+) Initialize the LPTIM MSP.
(+) DeInitialize the LPTIM MSP.
@endverbatim
* @{
*/
/**
* @brief Initialize the LPTIM according to the specified parameters in the
* LPTIM_InitTypeDef and initialize the associated handle.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_Init(LPTIM_HandleTypeDef *hlptim)
{
uint32_t tmpcfgr;
/* Check the LPTIM handle allocation */
if (hlptim == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_CLOCK_SOURCE(hlptim->Init.Clock.Source));
assert_param(IS_LPTIM_CLOCK_PRESCALER(hlptim->Init.Clock.Prescaler));
if ((hlptim->Init.Clock.Source == LPTIM_CLOCKSOURCE_ULPTIM)
|| (hlptim->Init.CounterSource == LPTIM_COUNTERSOURCE_EXTERNAL))
{
assert_param(IS_LPTIM_CLOCK_POLARITY(hlptim->Init.UltraLowPowerClock.Polarity));
assert_param(IS_LPTIM_CLOCK_SAMPLE_TIME(hlptim->Init.UltraLowPowerClock.SampleTime));
}
assert_param(IS_LPTIM_TRG_SOURCE(hlptim->Init.Trigger.Source));
if (hlptim->Init.Trigger.Source != LPTIM_TRIGSOURCE_SOFTWARE)
{
assert_param(IS_LPTIM_EXT_TRG_POLARITY(hlptim->Init.Trigger.ActiveEdge));
assert_param(IS_LPTIM_TRIG_SAMPLE_TIME(hlptim->Init.Trigger.SampleTime));
}
assert_param(IS_LPTIM_OUTPUT_POLARITY(hlptim->Init.OutputPolarity));
assert_param(IS_LPTIM_UPDATE_MODE(hlptim->Init.UpdateMode));
assert_param(IS_LPTIM_COUNTER_SOURCE(hlptim->Init.CounterSource));
if (hlptim->State == HAL_LPTIM_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hlptim->Lock = HAL_UNLOCKED;
#if (USE_HAL_LPTIM_REGISTER_CALLBACKS == 1)
/* Reset interrupt callbacks to legacy weak callbacks */
LPTIM_ResetCallback(hlptim);
if (hlptim->MspInitCallback == NULL)
{
hlptim->MspInitCallback = HAL_LPTIM_MspInit;
}
/* Init the low level hardware : GPIO, CLOCK, NVIC */
hlptim->MspInitCallback(hlptim);
#else
/* Init the low level hardware : GPIO, CLOCK, NVIC */
HAL_LPTIM_MspInit(hlptim);
#endif /* USE_HAL_LPTIM_REGISTER_CALLBACKS */
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Get the LPTIMx CFGR value */
tmpcfgr = hlptim->Instance->CFGR;
if ((hlptim->Init.Clock.Source == LPTIM_CLOCKSOURCE_ULPTIM)
|| (hlptim->Init.CounterSource == LPTIM_COUNTERSOURCE_EXTERNAL))
{
tmpcfgr &= (uint32_t)(~(LPTIM_CFGR_CKPOL | LPTIM_CFGR_CKFLT));
}
if (hlptim->Init.Trigger.Source != LPTIM_TRIGSOURCE_SOFTWARE)
{
tmpcfgr &= (uint32_t)(~(LPTIM_CFGR_TRGFLT | LPTIM_CFGR_TRIGSEL));
}
/* Clear CKSEL, PRESC, TRIGEN, TRGFLT, WAVPOL, PRELOAD & COUNTMODE bits */
tmpcfgr &= (uint32_t)(~(LPTIM_CFGR_CKSEL | LPTIM_CFGR_TRIGEN | LPTIM_CFGR_PRELOAD |
LPTIM_CFGR_WAVPOL | LPTIM_CFGR_PRESC | LPTIM_CFGR_COUNTMODE));
/* Set initialization parameters */
tmpcfgr |= (hlptim->Init.Clock.Source |
hlptim->Init.Clock.Prescaler |
hlptim->Init.OutputPolarity |
hlptim->Init.UpdateMode |
hlptim->Init.CounterSource);
/* Glitch filters for internal triggers and external inputs are configured
* only if an internal clock source is provided to the LPTIM
*/
if (hlptim->Init.Clock.Source == LPTIM_CLOCKSOURCE_APBCLOCK_LPOSC)
{
tmpcfgr |= (hlptim->Init.Trigger.SampleTime |
hlptim->Init.UltraLowPowerClock.SampleTime);
}
/* Configure LPTIM external clock polarity and digital filter */
if ((hlptim->Init.Clock.Source == LPTIM_CLOCKSOURCE_ULPTIM)
|| (hlptim->Init.CounterSource == LPTIM_COUNTERSOURCE_EXTERNAL))
{
tmpcfgr |= (hlptim->Init.UltraLowPowerClock.Polarity |
hlptim->Init.UltraLowPowerClock.SampleTime);
}
/* Configure LPTIM external trigger */
if (hlptim->Init.Trigger.Source != LPTIM_TRIGSOURCE_SOFTWARE)
{
/* Enable External trigger and set the trigger source */
tmpcfgr |= (hlptim->Init.Trigger.Source |
hlptim->Init.Trigger.ActiveEdge |
hlptim->Init.Trigger.SampleTime);
}
/* Write to LPTIMx CFGR */
hlptim->Instance->CFGR = tmpcfgr;
/* Configure LPTIM input sources */
if ((hlptim->Instance == LPTIM1) || (hlptim->Instance == LPTIM2))
{
/* Check LPTIM Input1 and Input2 sources */
assert_param(IS_LPTIM_INPUT1_SOURCE(hlptim->Instance, hlptim->Init.Input1Source));
assert_param(IS_LPTIM_INPUT2_SOURCE(hlptim->Instance, hlptim->Init.Input2Source));
/* Configure LPTIM Input1 and Input2 sources */
hlptim->Instance->CFGR2 = (hlptim->Init.Input1Source | hlptim->Init.Input2Source);
}
else
{
if (hlptim->Instance == LPTIM3)
{
/* Check LPTIM Input1 source */
assert_param(IS_LPTIM_INPUT1_SOURCE(hlptim->Instance, hlptim->Init.Input1Source));
/* Configure LPTIM Input1 source */
hlptim->Instance->CFGR2 = hlptim->Init.Input1Source;
}
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief DeInitialize the LPTIM peripheral.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_DeInit(LPTIM_HandleTypeDef *hlptim)
{
/* Check the LPTIM handle allocation */
if (hlptim == NULL)
{
return HAL_ERROR;
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the LPTIM Peripheral Clock */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
#if (USE_HAL_LPTIM_REGISTER_CALLBACKS == 1)
if (hlptim->MspDeInitCallback == NULL)
{
hlptim->MspDeInitCallback = HAL_LPTIM_MspDeInit;
}
/* DeInit the low level hardware: CLOCK, NVIC.*/
hlptim->MspDeInitCallback(hlptim);
#else
/* DeInit the low level hardware: CLOCK, NVIC.*/
HAL_LPTIM_MspDeInit(hlptim);
#endif /* USE_HAL_LPTIM_REGISTER_CALLBACKS */
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hlptim);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize the LPTIM MSP.
* @param hlptim LPTIM handle
* @retval None
*/
__weak void HAL_LPTIM_MspInit(LPTIM_HandleTypeDef *hlptim)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hlptim);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_LPTIM_MspInit could be implemented in the user file
*/
}
/**
* @brief DeInitialize LPTIM MSP.
* @param hlptim LPTIM handle
* @retval None
*/
__weak void HAL_LPTIM_MspDeInit(LPTIM_HandleTypeDef *hlptim)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hlptim);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_LPTIM_MspDeInit could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup LPTIM_Exported_Functions_Group2 LPTIM Start-Stop operation functions
* @brief Start-Stop operation functions.
*
@verbatim
==============================================================================
##### LPTIM Start Stop operation functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Start the PWM mode.
(+) Stop the PWM mode.
(+) Start the One pulse mode.
(+) Stop the One pulse mode.
(+) Start the Set once mode.
(+) Stop the Set once mode.
(+) Start the Encoder mode.
(+) Stop the Encoder mode.
(+) Start the Timeout mode.
(+) Stop the Timeout mode.
(+) Start the Counter mode.
(+) Stop the Counter mode.
@endverbatim
* @{
*/
/**
* @brief Start the LPTIM PWM generation.
* @param hlptim LPTIM handle
* @param Period Specifies the Autoreload value.
* This parameter must be a value between 0x0001 and 0xFFFF.
* @param Pulse Specifies the compare value.
* This parameter must be a value between 0x0000 and 0xFFFF.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_PWM_Start(LPTIM_HandleTypeDef *hlptim, uint32_t Period, uint32_t Pulse)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_PERIOD(Period));
assert_param(IS_LPTIM_PULSE(Pulse));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Reset WAVE bit to set PWM mode */
hlptim->Instance->CFGR &= ~LPTIM_CFGR_WAVE;
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_ARROK);
/* Load the period value in the autoreload register */
__HAL_LPTIM_AUTORELOAD_SET(hlptim, Period);
/* Wait for the completion of the write operation to the LPTIM_ARR register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_ARROK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_CMPOK);
/* Load the pulse value in the compare register */
__HAL_LPTIM_COMPARE_SET(hlptim, Pulse);
/* Wait for the completion of the write operation to the LPTIM_CMP register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_CMPOK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Start timer in continuous mode */
__HAL_LPTIM_START_CONTINUOUS(hlptim);
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the LPTIM PWM generation.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_PWM_Stop(LPTIM_HandleTypeDef *hlptim)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Start the LPTIM PWM generation in interrupt mode.
* @param hlptim LPTIM handle
* @param Period Specifies the Autoreload value.
* This parameter must be a value between 0x0001 and 0xFFFF
* @param Pulse Specifies the compare value.
* This parameter must be a value between 0x0000 and 0xFFFF
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_PWM_Start_IT(LPTIM_HandleTypeDef *hlptim, uint32_t Period, uint32_t Pulse)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_PERIOD(Period));
assert_param(IS_LPTIM_PULSE(Pulse));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Reset WAVE bit to set PWM mode */
hlptim->Instance->CFGR &= ~LPTIM_CFGR_WAVE;
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_ARROK);
/* Load the period value in the autoreload register */
__HAL_LPTIM_AUTORELOAD_SET(hlptim, Period);
/* Wait for the completion of the write operation to the LPTIM_ARR register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_ARROK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_CMPOK);
/* Load the pulse value in the compare register */
__HAL_LPTIM_COMPARE_SET(hlptim, Pulse);
/* Wait for the completion of the write operation to the LPTIM_CMP register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_CMPOK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Enable Autoreload write complete interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_ARROK);
/* Enable Compare write complete interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_CMPOK);
/* Enable Autoreload match interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_ARRM);
/* Enable Compare match interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_CMPM);
/* If external trigger source is used, then enable external trigger interrupt */
if ((hlptim->Init.Trigger.Source) != LPTIM_TRIGSOURCE_SOFTWARE)
{
/* Enable external trigger interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_EXTTRIG);
}
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Start timer in continuous mode */
__HAL_LPTIM_START_CONTINUOUS(hlptim);
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the LPTIM PWM generation in interrupt mode.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_PWM_Stop_IT(LPTIM_HandleTypeDef *hlptim)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Disable Autoreload write complete interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_ARROK);
/* Disable Compare write complete interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_CMPOK);
/* Disable Autoreload match interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_ARRM);
/* Disable Compare match interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_CMPM);
/* If external trigger source is used, then disable external trigger interrupt */
if ((hlptim->Init.Trigger.Source) != LPTIM_TRIGSOURCE_SOFTWARE)
{
/* Disable external trigger interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_EXTTRIG);
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Start the LPTIM One pulse generation.
* @param hlptim LPTIM handle
* @param Period Specifies the Autoreload value.
* This parameter must be a value between 0x0001 and 0xFFFF.
* @param Pulse Specifies the compare value.
* This parameter must be a value between 0x0000 and 0xFFFF.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_OnePulse_Start(LPTIM_HandleTypeDef *hlptim, uint32_t Period, uint32_t Pulse)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_PERIOD(Period));
assert_param(IS_LPTIM_PULSE(Pulse));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Reset WAVE bit to set one pulse mode */
hlptim->Instance->CFGR &= ~LPTIM_CFGR_WAVE;
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_ARROK);
/* Load the period value in the autoreload register */
__HAL_LPTIM_AUTORELOAD_SET(hlptim, Period);
/* Wait for the completion of the write operation to the LPTIM_ARR register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_ARROK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_CMPOK);
/* Load the pulse value in the compare register */
__HAL_LPTIM_COMPARE_SET(hlptim, Pulse);
/* Wait for the completion of the write operation to the LPTIM_CMP register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_CMPOK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Start timer in single (one shot) mode */
__HAL_LPTIM_START_SINGLE(hlptim);
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the LPTIM One pulse generation.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_OnePulse_Stop(LPTIM_HandleTypeDef *hlptim)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Start the LPTIM One pulse generation in interrupt mode.
* @param hlptim LPTIM handle
* @param Period Specifies the Autoreload value.
* This parameter must be a value between 0x0001 and 0xFFFF.
* @param Pulse Specifies the compare value.
* This parameter must be a value between 0x0000 and 0xFFFF.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_OnePulse_Start_IT(LPTIM_HandleTypeDef *hlptim, uint32_t Period, uint32_t Pulse)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_PERIOD(Period));
assert_param(IS_LPTIM_PULSE(Pulse));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Reset WAVE bit to set one pulse mode */
hlptim->Instance->CFGR &= ~LPTIM_CFGR_WAVE;
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_ARROK);
/* Load the period value in the autoreload register */
__HAL_LPTIM_AUTORELOAD_SET(hlptim, Period);
/* Wait for the completion of the write operation to the LPTIM_ARR register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_ARROK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_CMPOK);
/* Load the pulse value in the compare register */
__HAL_LPTIM_COMPARE_SET(hlptim, Pulse);
/* Wait for the completion of the write operation to the LPTIM_CMP register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_CMPOK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Enable Autoreload write complete interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_ARROK);
/* Enable Compare write complete interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_CMPOK);
/* Enable Autoreload match interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_ARRM);
/* Enable Compare match interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_CMPM);
/* If external trigger source is used, then enable external trigger interrupt */
if ((hlptim->Init.Trigger.Source) != LPTIM_TRIGSOURCE_SOFTWARE)
{
/* Enable external trigger interrupt */
__HAL_LPTIM_ENABLE_IT(hlptim, LPTIM_IT_EXTTRIG);
}
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Start timer in single (one shot) mode */
__HAL_LPTIM_START_SINGLE(hlptim);
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the LPTIM One pulse generation in interrupt mode.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_OnePulse_Stop_IT(LPTIM_HandleTypeDef *hlptim)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Disable Autoreload write complete interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_ARROK);
/* Disable Compare write complete interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_CMPOK);
/* Disable Autoreload match interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_ARRM);
/* Disable Compare match interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_CMPM);
/* If external trigger source is used, then disable external trigger interrupt */
if ((hlptim->Init.Trigger.Source) != LPTIM_TRIGSOURCE_SOFTWARE)
{
/* Disable external trigger interrupt */
__HAL_LPTIM_DISABLE_IT(hlptim, LPTIM_IT_EXTTRIG);
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Start the LPTIM in Set once mode.
* @param hlptim LPTIM handle
* @param Period Specifies the Autoreload value.
* This parameter must be a value between 0x0001 and 0xFFFF.
* @param Pulse Specifies the compare value.
* This parameter must be a value between 0x0000 and 0xFFFF.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_SetOnce_Start(LPTIM_HandleTypeDef *hlptim, uint32_t Period, uint32_t Pulse)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
assert_param(IS_LPTIM_PERIOD(Period));
assert_param(IS_LPTIM_PULSE(Pulse));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Set WAVE bit to enable the set once mode */
hlptim->Instance->CFGR |= LPTIM_CFGR_WAVE;
/* Enable the Peripheral */
__HAL_LPTIM_ENABLE(hlptim);
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_ARROK);
/* Load the period value in the autoreload register */
__HAL_LPTIM_AUTORELOAD_SET(hlptim, Period);
/* Wait for the completion of the write operation to the LPTIM_ARR register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_ARROK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Clear flag */
__HAL_LPTIM_CLEAR_FLAG(hlptim, LPTIM_FLAG_CMPOK);
/* Load the pulse value in the compare register */
__HAL_LPTIM_COMPARE_SET(hlptim, Pulse);
/* Wait for the completion of the write operation to the LPTIM_CMP register */
if (LPTIM_WaitForFlag(hlptim, LPTIM_FLAG_CMPOK) == HAL_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Start timer in single (one shot) mode */
__HAL_LPTIM_START_SINGLE(hlptim);
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the LPTIM Set once mode.
* @param hlptim LPTIM handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LPTIM_SetOnce_Stop(LPTIM_HandleTypeDef *hlptim)
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(hlptim->Instance));
/* Set the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_BUSY;
/* Disable the Peripheral */
__HAL_LPTIM_DISABLE(hlptim);
if (HAL_LPTIM_GetState(hlptim) == HAL_LPTIM_STATE_TIMEOUT)
{
return HAL_TIMEOUT;
}
/* Change the LPTIM state */
hlptim->State = HAL_LPTIM_STATE_READY;
/* Return function status */
return HAL_OK;
}