mbed library sources

Fork of mbed-src by mbed official

Revision:
385:be64abf45658
Parent:
330:c80ac197fa6a
Child:
632:7687fb9c4f91
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_comp.c	Tue Nov 04 09:45:07 2014 +0000
@@ -0,0 +1,709 @@
+/**
+  ******************************************************************************
+  * @file    stm32f3xx_hal_comp.c
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    12-Sept-2014
+  * @brief   COMP HAL module driver.
+  *    
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the COMP peripheral:
+  *           + Initialization/de-initialization functions
+  *           + I/O operation functions
+  *           + Peripheral Control functions 
+  *           + Peripheral State functions
+  *         
+  @verbatim
+================================================================================
+          ##### COMP Peripheral features #####
+================================================================================
+           
+  [..]       
+      The STM32F3xx device family integrates up to 7 analog comparators COMP1, COMP2...COMP7:
+      (#) The non inverting input and inverting input can be set to GPIO pins
+          as shown in table1. COMP Inputs below for STM32F303xB/STM32F303xC as example.
+          For other STM32F3xx devices please refer to the COMP peripheral section in corresponding 
+          Reference Manual.
+  
+      (#) The COMP output is available using HAL_COMP_GetOutputLevel()
+          and can be set on GPIO pins. Refer to table 2. COMP Outputs below for STM32F303xB/STM32F303xC as example.
+          For other STM32F3xx devices please refer to the COMP peripheral section in corresponding 
+          Reference Manual.
+  
+      (#) The COMP output can be redirected to embedded timers (TIM1, TIM2, TIM3...)
+          Refer to table 3. COMP Outputs redirection to embedded timers below for STM32F303xB/STM32F303xC as example.
+          For other STM32F3xx devices please refer to the COMP peripheral section in corresponding 
+          Reference Manual.
+  
+      (#) The comparators COMP1 and COMP2, COMP3 and COMP4, COMP5 and COMP6 can be combined in window
+          mode and only COMP1, COMP3 and COMP5 non inverting input can be used as non-inverting input.
+  
+      (#) The seven comparators have interrupt capability with wake-up
+          from Sleep and Stop modes (through the EXTI controller):
+          (++) COMP1 is internally connected to EXTI Line 21
+          (++) COMP2 is internally connected to EXTI Line 22
+          (++) COMP3 is internally connected to EXTI Line 29
+          (++) COMP4 is internally connected to EXTI Line 30
+          (++) COMP5 is internally connected to EXTI Line 31
+          (++) COMP6 is internally connected to EXTI Line 32
+          (++) COMP7 is internally connected to EXTI Line 33
+          From the corresponding IRQ handler, the right interrupt source can be retrieved with the 
+          macro __HAL_COMP_EXTI_GET_FLAG(). Possible values are:
+          (++) COMP_EXTI_LINE_COMP1_EVENT
+          (++) COMP_EXTI_LINE_COMP2_EVENT
+          (++) COMP_EXTI_LINE_COMP3_EVENT
+          (++) COMP_EXTI_LINE_COMP4_EVENT
+          (++) COMP_EXTI_LINE_COMP5_EVENT
+          (++) COMP_EXTI_LINE_COMP6_EVENT
+          (++) COMP_EXTI_LINE_COMP7_EVENT
+
+[..] Table 1. COMP Inputs for the STM32F303xB/STM32F303xC/STM32F303xE devices
+ +------------------------------------------------------------------------------------------+     
+ |                 |                | COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
+ |-----------------|----------------|---------------|---------------------------------------|
+ |                 | 1/4 VREFINT    |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ |                 | 1/2 VREFINT    |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ |                 | 3/4 VREFINT    |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ | Inverting Input | VREFINT        |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ |                 | DAC1 OUT (PA4) |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ |                 | DAC2 OUT (PA5) |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |  OK   |
+ |                 | IO1            |  PA0  |  PA2  |  PD15 |  PE8  |  PD13 |  PD10 |  PC0  |
+ |                 | IO2            |  ---  |  ---  |  PB12 |  PB2  |  PB10 |  PB15 |  ---  |
+ |-----------------|----------------|-------|-------|-------|-------|-------|-------|-------|
+ |  Non Inverting  | IO1            |  PA1  |  PA7  |  PB14 |  PB0  |  PD12 |  PD11 |  PA0  |
+ |    Input        | IO2            |  ---  |  PA3  |  PD14 |  PE7  |  PB13 |  PB11 |  PC1  |
+ +------------------------------------------------------------------------------------------+  
+  
+ [..] Table 2. COMP Outputs for the STM32F303xB/STM32F303xC/STM32F303xE devices
+ +-------------------------------------------------------+     
+ | COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
+ |-------|-------|-------|-------|-------|-------|-------|
+ |  PA0  |  PA2  |  PB1  |  PC8  |  PC7  |  PA10 |  PC2  |
+ |  PF4  |  PA7  |  ---  |  PA8  |  PA9  |  PC6  |  ---  |
+ |  PA6  |  PA12 |  ---  |  ---  |  ---  |  ---  |  ---  |
+ |  PA11 |  PB9  |  ---  |  ---  |  ---  |  ---  |  ---  |
+ |  PB8  |  ---  |  ---  |  ---  |  ---  |  ---  |  ---  |
+ +-------------------------------------------------------+
+
+ [..] Table 3. COMP Outputs redirection to embedded timers for the STM32F303xB/STM32F303xC devices
+ +----------------------------------------------------------------------------------------------------------------------+     
+ |     COMP1      |     COMP2      |     COMP3      |     COMP4      |     COMP5      |     COMP6      |     COMP7      |
+ |----------------|----------------|----------------|----------------|----------------|----------------|----------------|
+ |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |
+ |                |                |                |                |                |                |                |
+ |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |
+ |                |                |                |                |                |                |                |
+ |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |
+ |                |                |                |                |                |                |                |
+ |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |
+ |                |                |                |                |                |                |                |
+ |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |
+ |     +          |     +          |     +          |     +          |     +          |     +          |     +          |
+ |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |
+ |                |                |                |                |                |                |                |
+ |  TIM1 OCREFCLR |  TIM1 OCREFCLR |  TIM1 OCREFCLR |  TIM8 OCREFCLR |  TIM8 OCREFCLR |  TIM8 OCREFCLR |  TIM1 OCREFCLR |  
+ |                |                |                |                |                |                |                |
+ |  TIM1 IC1      |  TIM1 IC1      |  TIM2 OCREFCLR |  TIM3 IC3      |  TIM2 IC1      |  TIM2 IC2      |  TIM8 OCREFCLR |
+ |                |                |                |                |                |                |                |
+ |  TIM2 IC4      |  TIM2 IC4      |  TIM3 IC2      |  TIM3 OCREFCLR |  TIM3 OCREFCLR |  TIM2 OCREFCLR |  TIM2 IC3      |
+ |                |                |                |                |                |                |                |
+ |  TIM2 OCREFCLR |  TIM2 OCREFCLR |  TIM4 IC1      |  TIM4 IC2      |  TIM4 IC3      |  TIM16 OCREFCLR|  TIM1 IC2      |
+ |                |                |                |                |                |                |                |
+ |  TIM3 IC1      |  TIM3 IC1      |  TIM15 IC1     |  TIM15 OCREFCLR|  TIM16 BKIN    |  TIM16 IC1     |  TIM17 OCREFCLR|          
+ |                |                |                |                |                |                |                |
+ |  TIM3 OCREFCLR |  TIM3 OCREFCLR |  TIM15 BKIN    |  TIM15 IC2     |  TIM17 IC1     |  TIM4 IC4      |  TIM17 BKIN    |
+ +----------------------------------------------------------------------------------------------------------------------+
+
+ [..] Table 4. COMP Outputs redirection to embedded timers for the STM32F303xE devices
+ +----------------------------------------------------------------------------------------------------------------------+
+ |     COMP1      |     COMP2      |     COMP3      |     COMP4      |     COMP5      |     COMP6      |     COMP7      |
+ |----------------|----------------|----------------|----------------|----------------|----------------|----------------|
+ |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN (1) |  TIM1 BKIN     |  TIM1 BKIN     |  TIM1 BKIN (1) |
+ |                |                |                |                |                |                |                |
+ |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |
+ |                |                |                |                |                |                |                |
+ |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN (1) |  TIM8 BKIN     |  TIM8 BKIN     |  TIM8 BKIN (1) |
+ |                |                |                |                |                |                |                |
+ |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |
+ |                |                |                |                |                |                |                |
+ |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |
+ |     +          |     +          |     +          |     +          |     +          |     +          |     +          |
+ |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |  TIM8BKIN2     |
+ |                |                |                |                |                |                |                |
+ |  TIM1 OCREFCLR |  TIM1 OCREFCLR |  TIM1 OCREFCLR |  TIM8 OCREFCLR |  TIM8 OCREFCLR |  TIM8 OCREFCLR |  TIM1 OCREFCLR |  
+ |                |                |                |                |                |                |                |
+ |  TIM1 IC1      |  TIM1 IC1      |  TIM2 OCREFCLR |  TIM3 IC3      |  TIM2 IC1      |  TIM2 IC2      |  TIM8 OCREFCLR |
+ |                |                |                |                |                |                |                |
+ |  TIM2 IC4      |  TIM2 IC4      |  TIM3 IC2      |  TIM3 OCREFCLR |  TIM3 OCREFCLR |  TIM2 OCREFCLR |  TIM2 IC3      |
+ |                |                |                |                |                |                |                |
+ |  TIM2 OCREFCLR |  TIM2 OCREFCLR |  TIM4 IC1      |  TIM4 IC2      |  TIM4 IC3      |  TIM16 OCREFCLR|  TIM1 IC2      |
+ |                |                |                |                |                |                |                |
+ |  TIM3 IC1      |  TIM3 IC1      |  TIM15 IC1     |  TIM15 OCREFCLR|  TIM16 BKIN    |  TIM16 IC1     |  TIM17 OCREFCLR|          
+ |                |                |                |                |                |                |                |
+ |  TIM3 OCREFCLR |  TIM3 OCREFCLR |  TIM15 BKIN    |  TIM15 IC2     |  TIM17 IC1     |  TIM4 IC4      |  TIM17 BKIN    |
+ |                |                |                |                |                |                |                |
+ |  TIM20 BKIN    |  TIM20 BKIN    |  TIM20 BKIN    |  TIM20 BKIN (1)|  TIM20 BKIN    |  TIM20 BKIN    |  TIM20 BKIN (1)|
+ |                |                |                |                |                |                |                |
+ |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |
+ |                |                |                |                |                |                |                |
+ |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |  TIM1 BKIN2    |
+ |     +          |     +          |     +          |     +          |     +          |     +          |     +          |
+ |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |  TIM8 BKIN2    |
+ |     +          |     +          |     +          |     +          |     +          |     +          |     +          |
+ |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |  TIM20 BKIN2   |
+ |                |                |                |                |                |                |                |
+ +----------------------------------------------------------------------------------------------------------------------+
+ (1):This connection consists of connecting both GPIO and COMP output to TIM1/8/20 BRK input through an OR gate, instead
+     of connecting the GPIO to the TIM1/8/20 BRK input and the COMP output to the TIM1/8/20 BRK_ACTH input. The aim is to 
+     add a digital filter (3  bits) on the COMP output.
+
+ [..] Table 5. COMP Outputs blanking sources for the STM32F303xB/STM32F303xC/STM32F303xE devices
+ +----------------------------------------------------------------------------------------------------------------------+
+ |     COMP1      |     COMP2      |     COMP3      |     COMP4      |     COMP5      |     COMP6      |     COMP7      |
+ |----------------|----------------|----------------|----------------|----------------|----------------|----------------|
+ |  TIM1 OC5      |  TIM1 OC5      |  TIM1 OC5      |  TIM3 OC4      |  --------      |  TIM8 OC5      |  TIM1 OC5      |
+ |                |                |                |                |                |                |                |
+ |  TIM2 OC3      |  TIM2 OC3      |  --------      |  TIM8 OC5      |  TIM3 OC3      |  TIM2 OC4      |  TIM8 OC5      |
+ |                |                |                |                |                |                |                |
+ |  TIM3 OC3      |  TIM3 OC3      |  TIM2 OC4      |  TIM15 OC1     |  TIM8 OC5      |  TIM15 OC2     |  TIM15 OC2     |
+ |                |                |                |                |                |                |                |
+ +----------------------------------------------------------------------------------------------------------------------+
+   
+            ##### How to use this driver #####
+================================================================================
+  [..]
+      This driver provides functions to configure and program the Comparators of all STM32F3xx devices.
+
+      To use the comparator, perform the following steps:
+  
+      (#) Fill in the HAL_COMP_MspInit() to
+      (++) Configure the comparator input in analog mode using HAL_GPIO_Init()
+      (++) Configure the comparator output in alternate function mode using HAL_GPIO_Init() to map the comparator 
+           output to the GPIO pin
+      (++) 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 inverting input
+      (++) Select the non-inverting input
+      (++) Select the output polarity  
+      (++) Select the output redirection
+      (++) Select the hysteresis level
+      (++) Select the power mode
+      (++) Select the event/interrupt mode
+  
+      (#) Enable the comparator using HAL_COMP_Start() function or HAL_COMP_Start_IT() function for interrupt mode
+    
+      (#) Read the comparator output level with HAL_COMP_GetOutputLevel()
+    
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 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 "stm32f3xx_hal.h"
+
+/** @addtogroup STM32F3xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup COMP COMP HAL module driver
+  * @brief COMP HAL module driver
+  * @{
+  */
+
+#ifdef HAL_COMP_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup COMP_Exported_Functions COMP Exported Functions
+  * @{
+  */
+
+/** @defgroup COMP_Exported_Functions_Group1 Initialization and de-initialization functions
+ *  @brief    Initialization and Configuration functions 
+ *
+@verbatim    
+ ===============================================================================
+              ##### Initialization/de-initialization functions #####
+ ===============================================================================
+    [..]  This section provides functions to initialize and de-initialize comparators 
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the COMP according to the specified
+  *         parameters in the COMP_InitTypeDef and create 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)
+{ 
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  /* Check the COMP handle allocation and lock status */
+  if((hcomp == HAL_NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
+  {
+    status = HAL_ERROR;
+  }
+  else
+  {
+    /* Check the parameter */
+    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+    assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
+    assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
+    assert_param(IS_COMP_NONINVERTINGINPUT_INSTANCE(hcomp->Instance, hcomp->Init.NonInvertingInput));
+    assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
+    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
+    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));  
+    assert_param(IS_COMP_MODE(hcomp->Init.Mode));
+    assert_param(IS_COMP_BLANKINGSRCE(hcomp->Init.BlankingSrce)); 
+    assert_param(IS_COMP_BLANKINGSRCE_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce)); 
+    
+    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLED)
+    {
+      assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
+    }
+  
+    if(hcomp->State == HAL_COMP_STATE_RESET)
+    {
+      /* Init SYSCFG and the low level hardware to access comparators */
+      __SYSCFG_CLK_ENABLE();
+
+      HAL_COMP_MspInit(hcomp);
+    }
+  
+    /* Set COMP parameters */
+    /*     Set COMPxINSEL bits according to hcomp->Init.InvertingInput value        */
+    /*     Set COMPxNONINSEL bits according to hcomp->Init.NonInvertingInput value  */
+    /*     Set COMPxBLANKING bits according to hcomp->Init.BlankingSrce value       */
+    /*     Set COMPxOUTSEL bits according to hcomp->Init.Output value               */
+    /*     Set COMPxPOL bit according to hcomp->Init.OutputPol value                */
+    /*     Set COMPxHYST bits according to hcomp->Init.Hysteresis value             */
+    /*     Set COMPxMODE bits according to hcomp->Init.Mode value                   */
+    COMP_INIT(hcomp);
+
+    /* Initialize the COMP state*/
+    if(hcomp->State == HAL_COMP_STATE_RESET)
+    {
+      hcomp->State = HAL_COMP_STATE_READY;
+    }
+  }
+  
+  return status;
+}
+
+/**
+  * @brief  DeInitializes the COMP peripheral 
+  * @note   Deinitialization can't 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 == HAL_NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
+  {
+    status = HAL_ERROR;
+  }
+  else
+  {
+    /* Check the parameter */
+    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+
+    /* Set COMP_CSR register to reset value */
+    COMP_DEINIT(hcomp);
+
+    /* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
+    HAL_COMP_MspDeInit(hcomp);
+
+    hcomp->State = HAL_COMP_STATE_RESET;
+  }
+  
+  return status;
+}
+
+/**
+  * @brief  Initializes the COMP MSP.
+  * @param  hcomp: COMP handle
+  * @retval None
+  */
+__weak void HAL_COMP_MspInit(COMP_HandleTypeDef *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  DeInitializes COMP MSP.
+  * @param  hcomp: COMP handle
+  * @retval None
+  */
+__weak void HAL_COMP_MspDeInit(COMP_HandleTypeDef *hcomp)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_COMP_MspDeInit could be implenetd in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup COMP_Exported_Functions_Group2 Input and Output operation functions 
+ *  @brief   Data transfers functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### IO operation functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to manage the COMP data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Start the comparator 
+  * @param  hcomp: COMP handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_COMP_Start(COMP_HandleTypeDef *hcomp)
+{ 
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  /* Check the COMP handle allocation and lock status */
+  if((hcomp == HAL_NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
+  {
+    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 */
+      COMP_START(hcomp);
+
+      hcomp->State = HAL_COMP_STATE_BUSY;      
+    }
+    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 == HAL_NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
+  {
+    status = HAL_ERROR;
+  }
+  else
+  {
+    /* Check the parameter */
+    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+
+    if(hcomp->State == HAL_COMP_STATE_BUSY)
+    {
+      /* Disable the selected comparator */
+      COMP_STOP(hcomp);
+
+      hcomp->State = HAL_COMP_STATE_READY;
+    }
+    else
+    {
+      status = HAL_ERROR;
+    }
+  }
+  
+  return status;
+}
+
+/**
+  * @brief  Enables the interrupt and starts the comparator
+  * @param  hcomp: COMP handle
+  * @retval HAL status.
+  */
+HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp)
+{ 
+  HAL_StatusTypeDef status = HAL_OK;
+  uint32_t extiline = 0;
+  
+  /* Check the parameter */
+  assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
+
+  status = HAL_COMP_Start(hcomp);
+  if(status == HAL_OK)
+  {
+    /* Check the Exti Line output configuration */
+    extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
+    /* Configure the rising edge */
+    if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET)
+    {
+      __HAL_COMP_EXTI_RISING_IT_ENABLE(extiline);
+    }
+    else
+    {
+      __HAL_COMP_EXTI_RISING_IT_DISABLE(extiline);
+    }
+    /* Configure the falling edge */
+    if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET)
+    {
+      __HAL_COMP_EXTI_FALLING_IT_ENABLE(extiline);
+    }
+    else
+    {
+      __HAL_COMP_EXTI_FALLING_IT_DISABLE(extiline);
+    }
+    /* Enable Exti interrupt mode */
+    __HAL_COMP_EXTI_ENABLE_IT(extiline);
+    /* Clear COMP Exti pending bit */
+    __HAL_COMP_EXTI_CLEAR_FLAG(extiline);    
+  }
+
+  return status;
+}
+
+/**
+  * @brief  Disable the interrupt and Stop the comparator 
+  * @param  hcomp: COMP handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_COMP_Stop_IT(COMP_HandleTypeDef *hcomp)
+{ 
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  /* Disable the Exti Line interrupt mode */
+  __HAL_COMP_EXTI_DISABLE_IT(__HAL_COMP_GET_EXTI_LINE(hcomp->Instance));
+  
+  status = HAL_COMP_Stop(hcomp);
+  
+  return status;
+}
+
+/**
+  * @brief  Comparator IRQ Handler 
+  * @param  hcomp: COMP handle
+  * @retval HAL status
+  */
+void HAL_COMP_IRQHandler(COMP_HandleTypeDef *hcomp)
+{
+  uint32_t extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
+  
+  /* Check COMP Exti flag */
+  if(__HAL_COMP_EXTI_GET_FLAG(extiline) != RESET)
+  {
+    /* Clear COMP Exti pending bit */
+    __HAL_COMP_EXTI_CLEAR_FLAG(extiline);
+
+    /* 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 COMP data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Lock the selected comparator configuration. 
+  * @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 == HAL_NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
+  {
+    status = HAL_ERROR;
+  }
+  else
+  {
+    /* Check the parameter */
+    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+
+    /* Set lock flag */
+    hcomp->State |= COMP_STATE_BIT_LOCK;
+
+    /* Set the lock bit corresponding to selected comparator */
+    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 non-inverting input is at a lower
+  *             voltage than the inverting input
+  *           - Comparator output is high when the non-inverting input is at a higher
+  *             voltage than the inverting input
+  *         If the polarity is inverted:
+  *           - Comparator output is high when the non-inverting input is at a lower
+  *             voltage than the inverting input
+  *           - Comparator output is low when the non-inverting input is at a higher
+  *             voltage than the inverting input
+  * @param  hcomp: COMP handle
+  * @retval Returns the selected comparator output level: COMP_OUTPUTLEVEL_LOW or COMP_OUTPUTLEVEL_HIGH.
+  *       
+  */
+uint32_t HAL_COMP_GetOutputLevel(COMP_HandleTypeDef *hcomp)
+{
+  uint32_t level=0;
+  
+  /* Check the parameter */
+  assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+  
+  level = READ_BIT(hcomp->Instance->CSR, COMP_CSR_COMPxOUT);
+
+  if(level != 0)
+  {
+    return(COMP_OUTPUTLEVEL_HIGH);
+  }
+  return(COMP_OUTPUTLEVEL_LOW);
+}
+
+/**
+  * @brief  Comparator callback.
+  * @param  hcomp: COMP handle
+  * @retval None
+  */
+__weak void HAL_COMP_TriggerCallback(COMP_HandleTypeDef *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 
+    and the data flow.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Return the COMP state
+  * @param  hcomp : COMP handle
+  * @retval HAL state
+  */
+HAL_COMP_StateTypeDef HAL_COMP_GetState(COMP_HandleTypeDef *hcomp)
+{
+  /* Check the COMP handle allocation */
+  if(hcomp == HAL_NULL)
+  {
+    return HAL_COMP_STATE_RESET;
+  }
+
+  /* Check the parameter */
+  assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
+
+  return hcomp->State;
+}
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_COMP_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/