/**
******************************************************************************
* @file stm32l4xx_hal_comp.c
* @author MCD Application Team
* @version V1.5.1
* @date 31-May-2016
* @brief COMP HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the COMP peripheral:
* + Initialization and de-initialization functions
* + Start/Stop operation functions in polling mode
* + Start/Stop operation functions in interrupt mode (through EXTI interrupt)
* + Peripheral control functions
* + Peripheral state functions
*
@verbatim
================================================================================
##### COMP Peripheral features #####
================================================================================
[..]
The STM32L4xx device family integrates two analog comparators instances
COMP1 and COMP2:
(#) The COMP input minus (inverting input) and input plus (non inverting input)
can be set to internal references or to GPIO pins
(refer to GPIO list in reference manual).
(#) The COMP output level is available using HAL_COMP_GetOutputLevel()
and can be redirected to other peripherals: GPIO pins (in mode
alternate functions for comparator), timers.
(refer to GPIO list in reference manual).
(#) Pairs of comparators instances can be combined in window mode
(2 consecutive instances odd and even COMP<x> and COMP<x+1>).
(#) The comparators have interrupt capability through the EXTI controller
with wake-up from sleep and stop modes:
(++) COMP1 is internally connected to EXTI Line 21
(++) COMP2 is internally connected to EXTI Line 22
From the corresponding IRQ handler, the right interrupt source can be retrieved
using macro __HAL_COMP_COMP1_EXTI_GET_FLAG() and __HAL_COMP_COMP2_EXTI_GET_FLAG().
##### How to use this driver #####
================================================================================
[..]
This driver provides functions to configure and program the comparator instances
of STM32L4xx devices.
To use the comparator, perform the following steps:
(#) Initialize the COMP low level resources by implementing the HAL_COMP_MspInit():
(++) Configure the GPIO connected to comparator inputs plus and minus in analog mode
using HAL_GPIO_Init().
(++) If needed, configure the GPIO connected to comparator output in alternate function mode
using HAL_GPIO_Init().
(++) If required enable the COMP interrupt by configuring and enabling EXTI line in Interrupt mode and
selecting the desired sensitivity level using HAL_GPIO_Init() function. After that enable the comparator
interrupt vector using HAL_NVIC_EnableIRQ() function.
(#) Configure the comparator using HAL_COMP_Init() function:
(++) Select the input minus (inverting input)
(++) Select the input plus (non-inverting input)
(++) Select the hysteresis
(++) Select the blanking source
(++) Select the output polarity
(++) Select the power mode
(++) Select the window mode
-@@- HAL_COMP_Init() calls internally __HAL_RCC_SYSCFG_CLK_ENABLE()
to enable internal control clock of the comparators.
However, this is a legacy strategy. In future STM32 families,
COMP clock enable must be implemented by user in "HAL_COMP_MspInit()".
Therefore, for compatibility anticipation, it is recommended to
implement __HAL_RCC_SYSCFG_CLK_ENABLE() in "HAL_COMP_MspInit()".
(#) Reconfiguration on-the-fly of comparator can be done by calling again
function HAL_COMP_Init() with new input structure parameters values.
(#) Enable the comparator using HAL_COMP_Start() function.
(#) Use HAL_COMP_TriggerCallback() or HAL_COMP_GetOutputLevel() functions
to manage comparator outputs (events and output level).
(#) Disable the comparator using HAL_COMP_Stop() function.
(#) De-initialize the comparator using HAL_COMP_DeInit() function.
(#) For safety purpose, comparator configuration can be locked using HAL_COMP_Lock() function.
The only way to unlock the comparator is a device hardware reset.
@endverbatim
******************************************************************************
Table 1. COMP inputs and output for STM32L4xx devices
+---------------------------------------------------------+
| | | COMP1 | COMP2 |
|----------------|----------------|-----------|-----------|
| | IO1 | PC5 | PB4 |
| Input plus | IO2 | PB2 | PB6 |
| | IO3 (3) | PA1 | PA3 |
|----------------|----------------|-----------------------|
| | 1/4 VrefInt | Available | Available |
| | 1/2 VrefInt | Available | Available |
| | 3/4 VrefInt | Available | Available |
| Input minus | VrefInt | Available | Available |
| | DAC1 channel 1 | Available | Available |
| | DAC1 channel 2 | Available | Available |
| | IO1 | PB1 | PB3 |
| | IO2 | PC4 | PB7 |
| | IO3 (3) | PA0 | PA2 |
| | IO4 (3) | PA4 | PA4 |
| | IO5 (3) | PA5 | PA5 |
+---------------------------------------------------------+
| Output | | PB0 (1) | PB5 (1) |
| | | PB10 (1) | PB11 (1) |
| | | TIM (2) | TIM (2) |
+---------------------------------------------------------+
(1) GPIO must be set to alternate function for comparator
(2) Comparators output to timers is set in timers instances.
(3) Only STM32L43x/L44x
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"
/** @addtogroup STM32L4xx_HAL_Driver
* @{
*/
/** @defgroup COMP COMP
* @brief COMP HAL module driver
* @{
*/
#ifdef HAL_COMP_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @addtogroup COMP_Private_Constants
* @{
*/
/* Delay for COMP startup time. */
/* Note: Delay required to reach propagation delay specification. */
/* Literal set to maximum value (refer to device datasheet, */
/* parameter "tSTART"). */
/* Unit: us */
#define COMP_DELAY_STARTUP_US ((uint32_t) 80U) /*!< Delay for COMP startup time */
/* Delay for COMP voltage scaler stabilization time. */
/* Literal set to maximum value (refer to device datasheet, */
/* parameter "tSTART_SCALER"). */
/* Unit: us */
#define COMP_DELAY_VOLTAGE_SCALER_STAB_US ((uint32_t) 200U) /*!< Delay for COMP voltage scaler stabilization time */
#define COMP_OUTPUT_LEVEL_BITOFFSET_POS ((uint32_t) 30U)
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup COMP_Exported_Functions COMP Exported Functions
* @{
*/
/** @defgroup COMP_Exported_Functions_Group1 Initialization/de-initialization functions
* @brief Initialization and de-initialization functions.
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..] This section provides functions to initialize and de-initialize comparators
@endverbatim
* @{
*/
/**
* @brief Initialize the COMP according to the specified
* parameters in the COMP_InitTypeDef and initialize the associated handle.
* @note If the selected comparator is locked, initialization can't be performed.
* To unlock the configuration, perform a system reset.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{
uint32_t tmp_csr = 0;
uint32_t exti_line = 0;
uint32_t comp_voltage_scaler_not_initialized = 0;
__IO uint32_t wait_loop_index = 0;
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
assert_param(IS_COMP_INPUT_PLUS(hcomp->Instance, hcomp->Init.NonInvertingInput));
assert_param(IS_COMP_INPUT_MINUS(hcomp->Instance, hcomp->Init.InvertingInput));
assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
assert_param(IS_COMP_POWERMODE(hcomp->Init.Mode));
assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
assert_param(IS_COMP_BLANKINGSRC_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce));
assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
if(hcomp->State == HAL_COMP_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hcomp->Lock = HAL_UNLOCKED;
/* Init SYSCFG and the low level hardware to access comparators */
/* Note: HAL_COMP_Init() calls __HAL_RCC_SYSCFG_CLK_ENABLE() */
/* to enable internal control clock of the comparators. */
/* However, this is a legacy strategy. In future STM32 families, */
/* COMP clock enable must be implemented by user */
/* in "HAL_COMP_MspInit()". */
/* Therefore, for compatibility anticipation, it is recommended */
/* to implement __HAL_RCC_SYSCFG_CLK_ENABLE() */
/* in "HAL_COMP_MspInit()". */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Init the low level hardware */
HAL_COMP_MspInit(hcomp);
}
/* Memorize voltage scaler state before initialization */
comp_voltage_scaler_not_initialized = (READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) == 0);
/* Set COMP parameters */
tmp_csr = (hcomp->Init.InvertingInput |
hcomp->Init.NonInvertingInput |
hcomp->Init.BlankingSrce |
hcomp->Init.Hysteresis |
hcomp->Init.OutputPol |
hcomp->Init.Mode );
/* Set parameters in COMP register */
/* Note: Update all bits except read-only, lock and enable bits */
#if defined (COMP_CSR_INMESEL)
MODIFY_REG(hcomp->Instance->CSR,
COMP_CSR_PWRMODE | COMP_CSR_INMSEL | COMP_CSR_INPSEL |
COMP_CSR_WINMODE | COMP_CSR_POLARITY | COMP_CSR_HYST |
COMP_CSR_BLANKING | COMP_CSR_BRGEN | COMP_CSR_SCALEN | COMP_CSR_INMESEL,
tmp_csr
);
#else
MODIFY_REG(hcomp->Instance->CSR,
COMP_CSR_PWRMODE | COMP_CSR_INMSEL | COMP_CSR_INPSEL |
COMP_CSR_WINMODE | COMP_CSR_POLARITY | COMP_CSR_HYST |
COMP_CSR_BLANKING | COMP_CSR_BRGEN | COMP_CSR_SCALEN,
tmp_csr
);
#endif
/* Set window mode */
/* Note: Window mode bit is located into 1 out of the 2 pairs of COMP */
/* instances. Therefore, this function can update another COMP */
/* instance that the one currently selected. */
if(hcomp->Init.WindowMode == COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON)
{
SET_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
}
else
{
CLEAR_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
}
/* Delay for COMP scaler bridge voltage stabilization */
/* Apply the delay if voltage scaler bridge is enabled for the first time */
if ((READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) != 0) &&
(comp_voltage_scaler_not_initialized != 0) )
{
/* Wait loop initialization and execution */
/* Note: Variable divided by 2 to compensate partially */
/* CPU processing cycles. */
wait_loop_index = (COMP_DELAY_VOLTAGE_SCALER_STAB_US * (SystemCoreClock / (1000000 * 2)));
while(wait_loop_index != 0)
{
wait_loop_index--;
}
}
/* Get the EXTI line corresponding to the selected COMP instance */
exti_line = COMP_GET_EXTI_LINE(hcomp->Instance);
/* Manage EXTI settings */
if((hcomp->Init.TriggerMode & (COMP_EXTI_IT | COMP_EXTI_EVENT)) != RESET)
{
/* Configure EXTI rising edge */
if((hcomp->Init.TriggerMode & COMP_EXTI_RISING) != RESET)
{
SET_BIT(EXTI->RTSR1, exti_line);
}
else
{
CLEAR_BIT(EXTI->RTSR1, exti_line);
}
/* Configure EXTI falling edge */
if((hcomp->Init.TriggerMode & COMP_EXTI_FALLING) != RESET)
{
SET_BIT(EXTI->FTSR1, exti_line);
}
else
{
CLEAR_BIT(EXTI->FTSR1, exti_line);
}
/* Clear COMP EXTI pending bit (if any) */
WRITE_REG(EXTI->PR1, exti_line);
/* Configure EXTI event mode */
if((hcomp->Init.TriggerMode & COMP_EXTI_EVENT) != RESET)
{
SET_BIT(EXTI->EMR1, exti_line);
}
else
{
CLEAR_BIT(EXTI->EMR1, exti_line);
}
/* Configure EXTI interrupt mode */
if((hcomp->Init.TriggerMode & COMP_EXTI_IT) != RESET)
{
SET_BIT(EXTI->IMR1, exti_line);
}
else
{
CLEAR_BIT(EXTI->IMR1, exti_line);
}
}
else
{
/* Disable EXTI event mode */
CLEAR_BIT(EXTI->EMR1, exti_line);
/* Disable EXTI interrupt mode */
CLEAR_BIT(EXTI->IMR1, exti_line);
}
/* Set HAL COMP handle state */
/* Note: Transition from state reset to state ready, */
/* otherwise (coming from state ready or busy) no state update. */
if (hcomp->State == HAL_COMP_STATE_RESET)
{
hcomp->State = HAL_COMP_STATE_READY;
}
}
return status;
}
/**
* @brief DeInitialize the COMP peripheral.
* @note Deinitialization cannot be performed if the COMP configuration is locked.
* To unlock the configuration, perform a system reset.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_DeInit(COMP_HandleTypeDef *hcomp)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
/* Set COMP_CSR register to reset value */
WRITE_REG(hcomp->Instance->CSR, 0x00000000);
/* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
HAL_COMP_MspDeInit(hcomp);
/* Set HAL COMP handle state */
hcomp->State = HAL_COMP_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hcomp);
}
return status;
}
/**
* @brief Initialize the COMP MSP.
* @param hcomp COMP handle
* @retval None
*/
__weak void HAL_COMP_MspInit(COMP_HandleTypeDef *hcomp)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hcomp);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_COMP_MspInit could be implemented in the user file
*/
}
/**
* @brief DeInitialize the COMP MSP.
* @param hcomp COMP handle
* @retval None
*/
__weak void HAL_COMP_MspDeInit(COMP_HandleTypeDef *hcomp)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hcomp);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_COMP_MspDeInit could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup COMP_Exported_Functions_Group2 Start-Stop operation functions
* @brief Start-Stop operation functions.
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Start a comparator instance.
(+) Stop a comparator instance.
@endverbatim
* @{
*/
/**
* @brief Start the comparator.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_Start(COMP_HandleTypeDef *hcomp)
{
__IO uint32_t wait_loop_index = 0;
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
if(hcomp->State == HAL_COMP_STATE_READY)
{
/* Enable the selected comparator */
SET_BIT(hcomp->Instance->CSR, COMP_CSR_EN);
/* Set HAL COMP handle state */
hcomp->State = HAL_COMP_STATE_BUSY;
/* Delay for COMP startup time */
/* Wait loop initialization and execution */
/* Note: Variable divided by 2 to compensate partially */
/* CPU processing cycles. */
wait_loop_index = (COMP_DELAY_STARTUP_US * (SystemCoreClock / (1000000 * 2)));
while(wait_loop_index != 0)
{
wait_loop_index--;
}
}
else
{
status = HAL_ERROR;
}
}
return status;
}
/**
* @brief Stop the comparator.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_Stop(COMP_HandleTypeDef *hcomp)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
if((hcomp->State == HAL_COMP_STATE_BUSY) ||
(hcomp->State == HAL_COMP_STATE_READY) )
{
/* Disable the selected comparator */
CLEAR_BIT(hcomp->Instance->CSR, COMP_CSR_EN);
/* Set HAL COMP handle state */
hcomp->State = HAL_COMP_STATE_READY;
}
else
{
status = HAL_ERROR;
}
}
return status;
}
/**
* @brief Comparator IRQ handler.
* @param hcomp COMP handle
* @retval None
*/
void HAL_COMP_IRQHandler(COMP_HandleTypeDef *hcomp)
{
/* Get the EXTI line corresponding to the selected COMP instance */
uint32_t exti_line = COMP_GET_EXTI_LINE(hcomp->Instance);
/* Check COMP EXTI flag */
if(READ_BIT(EXTI->PR1, exti_line) != RESET)
{
/* Check whether comparator is in independent or window mode */
if(READ_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE) != RESET)
{
/* Clear COMP EXTI line pending bit of the pair of comparators */
/* in window mode. */
/* Note: Pair of comparators in window mode can both trig IRQ when */
/* input voltage is changing from "out of window" area */
/* (low or high ) to the other "out of window" area (high or low).*/
/* Both flags must be cleared to call comparator trigger */
/* callback is called once. */
WRITE_REG(EXTI->PR1, (COMP_EXTI_LINE_COMP1 | COMP_EXTI_LINE_COMP2));
}
else
{
/* Clear COMP EXTI line pending bit */
WRITE_REG(EXTI->PR1, exti_line);
}
/* COMP trigger user callback */
HAL_COMP_TriggerCallback(hcomp);
}
}
/**
* @}
*/
/** @defgroup COMP_Exported_Functions_Group3 Peripheral Control functions
* @brief Management functions.
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the comparators.
@endverbatim
* @{
*/
/**
* @brief Lock the selected comparator configuration.
* @note A system reset is required to unlock the comparator configuration.
* @note Locking the comparator from reset state is possible
* if __HAL_RCC_SYSCFG_CLK_ENABLE() is being called before.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_Lock(COMP_HandleTypeDef *hcomp)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
/* Set HAL COMP handle state */
hcomp->State = ((HAL_COMP_StateTypeDef)(hcomp->State | COMP_STATE_BITFIELD_LOCK));
}
if(status == HAL_OK)
{
/* Set the lock bit corresponding to selected comparator */
__HAL_COMP_LOCK(hcomp);
}
return status;
}
/**
* @brief Return the output level (high or low) of the selected comparator.
* The output level depends on the selected polarity.
* If the polarity is not inverted:
* - Comparator output is low when the input plus is at a lower
* voltage than the input minus
* - Comparator output is high when the input plus is at a higher
* voltage than the input minus
* If the polarity is inverted:
* - Comparator output is high when the input plus is at a lower
* voltage than the input minus
* - Comparator output is low when the input plus is at a higher
* voltage than the input minus
* @param hcomp COMP handle
* @retval Returns the selected comparator output level:
* @arg @ref COMP_OUTPUT_LEVEL_LOW
* @arg @ref COMP_OUTPUT_LEVEL_HIGH
*
*/
uint32_t HAL_COMP_GetOutputLevel(COMP_HandleTypeDef *hcomp)
{
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
return (uint32_t)(READ_BIT(hcomp->Instance->CSR, COMP_CSR_VALUE)
>> COMP_OUTPUT_LEVEL_BITOFFSET_POS);
}
/**
* @brief Comparator callback.
* @param hcomp COMP handle
* @retval None
*/
__weak void HAL_COMP_TriggerCallback(COMP_HandleTypeDef *hcomp)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hcomp);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_COMP_TriggerCallback should be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup COMP_Exported_Functions_Group4 Peripheral State functions
* @brief Peripheral State functions.
*
@verbatim
===============================================================================
##### Peripheral State functions #####
===============================================================================
[..]
This subsection permit to get in run-time the status of the peripheral.
@endverbatim
* @{
*/
/**
* @brief Return the COMP handle state.
* @param hcomp COMP handle
* @retval HAL state
*/
HAL_COMP_StateTypeDef HAL_COMP_GetState(COMP_HandleTypeDef *hcomp)
{
/* Check the COMP handle allocation */
if(hcomp == NULL)
{
return HAL_COMP_STATE_RESET;
}
/* Check the parameter */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
/* Return HAL COMP handle state */
return hcomp->State;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_COMP_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
