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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_comp.c
- Revision:
- 394:83f921546702
- Parent:
- 393:17d2d502961d
- Child:
- 395:bfce16e86ea4
--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_comp.c Fri Nov 07 12:00:11 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,810 +0,0 @@
-/**
- ******************************************************************************
- * @file stm32l1xx_hal_comp.c
- * @author MCD Application Team
- * @version V1.0.0
- * @date 5-September-2014
- * @brief COMP HAL module driver.
- *
- * This file provides firmware functions to manage the following
- * functionalities of the COMP peripheral:
- * + Initialization and de-initialization functions
- * + I/O operation functions
- * + Peripheral Control functions
- * + Peripheral State functions
- *
- @verbatim
-================================================================================
- ##### COMP Peripheral features #####
-================================================================================
-
- [..]
- The STM32L1xx device family integrates 2 analog comparators COMP1 and
- COMP2:
- (#) The non inverting input and inverting input can be set to GPIO pins.
- Refer to "table1. COMP Inputs" below.
- HAL COMP driver configures the Routing Interface (RI) to connect the
- selected I/O pins to comparator input.
- Caution: Comparator COMP1 and ADC cannot be used at the same time as
- ADC since they share the ADC switch matrix: COMP1 non-inverting
- input is routed through ADC switch matrix. Except if ADC is intented
- to measure voltage on COMP1 non-inverting input: it can be performed
- on ADC channel VCOMP.
-
- (#) The COMP output is available using HAL_COMP_GetOutputLevel().
-
- (#) The COMP output can be redirected to embedded timers (TIM2, TIM3,
- TIM4, TIM10).
- COMP output cannot be redirected to any I/O pin.
- Refer to "table 2. COMP Outputs redirection to embedded timers" below.
-
- (#) The comparators COMP1 and COMP2 can be combined in window mode.
- In this mode, COMP2 non inverting input is used as common
- non-inverting input.
-
- (#) The 2 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
-
- From the corresponding IRQ handler, the right interrupt source can be
- retrieved with macro __HAL_COMP_EXTI_GET_FLAG(). Possible values are:
- (++) COMP_EXTI_LINE_COMP1_EVENT
- (++) COMP_EXTI_LINE_COMP2_EVENT
-
- (#) The comparators also offer the possibility to ouput the voltage
- reference (VrefInt), used on inverting inputs, on I/O pin through
- a buffer. To use it, refer to macro "__HAL_VREFINT_OUT_ENABLE()".
-
-
-[..] Table 1. COMP Inputs for the STM32L1xx devices
- +----------------------------------------------------------------------+
- | | | COMP1 | COMP2 |
- |-----------------|--------------------------------|---------|---------|
- | | 1/4 VREFINT | -- | OK |
- | | 1/2 VREFINT | -- | OK |
- | | 3/4 VREFINT | -- | OK |
- | Inverting | VREFINT | OK | OK |
- | input | DAC Ch1 OUT (PA4) | -- | OK |
- | | DAC Ch2 OUT (PA5) | -- | OK |
- | | IO: PB3 | -- | OK |
- |-----------------|--------------------------------|---------|---------|
- | | IO: | | |
- | | PB4, 5, 6*, 7* | --- | OK |
- | Non-inverting | PA0*, 1*, 2*, 3*, 4, 5, 6, 7 | OK | --- |
- | input | PB0, 1, 12, 13, 14, 15 | OK | --- |
- | | PC0, 1, 2, 3, 4, 5 | OK | --- |
- | | PE7, 8, 9, 10 | OK | --- |
- | | PF6, 7, 8, 9, 10 | OK | --- |
- | | OPAMP1 output | OK | --- |
- | | OPAMP2 output | OK | --- |
- | | OPAMP3 output** | OK | --- |
- +----------------------------------------------------------------------+
- *: Available on devices category Cat.3, Cat.4, Cat.5 only.
- **: Available on devices category Cat.4 only.
-
- [..] Table 2. COMP Outputs redirection to embedded timers
- +-----------------------------------+
- | COMP1 | COMP2 |
- |-----------------|-----------------|
- | | TIM2 IC4 |
- | | TIM2 OCREF CLR |
- | (no redirection | TIM3 IC4 |
- | to timers) | TIM3 OCREF CLR |
- | | TIM4 IC4 |
- | | TIM4 OCREF CLR |
- | | TIM10 IC1 |
- +-----------------------------------+
-
-
- ##### How to use this driver #####
-================================================================================
- [..]
- This driver provides functions to configure and program the Comparators of all STM32L1xx devices.
-
- To use the comparator, perform the following steps:
-
- (#) Initialize the COMP low level resources by implementing the HAL_COMP_MspInit().
- (++) Configure the comparator input I/O pin using HAL_GPIO_Init():
- - For all inputs: I/O pin in analog mode (Schmitt trigger disabled)
- - Possible alternate configuration, for non-inverting inputs of comparator 2: I/O pin in floating mode (Schmitt trigger enabled).
- It is recommended to use analog configuration to avoid any overconsumption around VDD/2.
- (++) Enable COMP Peripheral clock using macro __COMP_CLK_ENABLE()
- (++) If required enable the COMP interrupt (EXTI line Interrupt): enable
- the comparator interrupt vector using HAL_NVIC_EnableIRQ(COMP_IRQn)
- and HAL_NVIC_SetPriority(COMP_IRQn, xxx, xxx) functions.
-
- (#) Configure the comparator using HAL_COMP_Init() function:
- (++) Select the inverting input (COMP2 only)
- (++) Select the non-inverting input
- (++) Select the output redirection to timers (COMP2 only)
- (++) Select the speed mode (COMP2 only)
- (++) Select the window mode (related to COMP1 and COMP2, but selected
- by COMP2 only)
- (++) Select the pull-up/down resistors on non-inverting input (COMP1 only)
-
- (#) Enable the comparator using HAL_COMP_Start() or HAL_COMP_Start_IT()
- function
-
- (#) If needed, use HAL_COMP_GetOutputLevel() or HAL_COMP_TriggerCallback()
- functions to manage comparator actions (output level or events)
-
- (#) Disable the comparator using HAL_COMP_Stop() or HAL_COMP_Stop_IT()
- function
-
- (#) De-initialize the comparator using HAL_COMP_DeInit() function
-
-
- @endverbatim
- ******************************************************************************
- * @attention
- *
- * <h2><center>© 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 "stm32l1xx_hal.h"
-
-/** @addtogroup STM32L1xx_HAL_Driver
- * @{
- */
-
-/** @defgroup COMP COMP
- * @brief COMP HAL module driver
- * @{
- */
-
-#ifdef HAL_COMP_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-
-/** @defgroup COMP_Private_Constants COMP Private Constants
- * @{
- */
- /* Delay for COMP startup time. */
- /* Maximum delay is 10us for comparator 1 and 25us for comparator 2 in slow */
- /* mode (refer to device datasheet, parameter tSTART). */
- /* Delay in CPU cycles, fixed to worst case: maximum CPU frequency 32MHz to */
- /* have the minimum number of CPU cycles to fulfill this delay. */
- /* - Comparator 1: delay minimum of 320 CPU cyles. Wait loop takes 3 CPU */
- /* cycles per iteration, therefore total wait iterations */
- /* number must be initialized at 106 iterations. */
- /* - Comparator 2: delay minimum of 800 CPU cyles. Wait loop takes 3 CPU */
- /* cycles per iteration, therefore total wait iterations */
- /* number must be initialized at 266 iterations. */
-#define COMP1_START_DELAY_CPU_CYCLES ((uint32_t)106)
-#define COMP2_START_DELAY_CPU_CYCLES ((uint32_t)266)
-
- /* Comparator status "locked": to update COMP handle state (software lock */
- /* only on COMP of STM32L1xx devices) by bitfield: */
- /* states HAL_COMP_STATE_READY_LOCKED, HAL_COMP_STATE_BUSY_LOCKED. */
-#define COMP_STATE_BIT_LOCK ((uint32_t) 0x00000010)
-
-/**
- * @}
- */
-
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private 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 and 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));
-
- if (hcomp->Instance == COMP1)
- {
- assert_param(IS_COMP_NONINVERTINGINPUTPULL(hcomp->Init.NonInvertingInputPull));
- }
- else /* if (hcomp->Instance == COMP2) */
- {
- assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
- assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
- assert_param(IS_COMP_MODE(hcomp->Init.Mode));
- assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
- }
-
- /* In window mode, non-inverting inputs of the 2 comparators are */
- /* connected together and are using inputs of COMP2 only. If COMP1 is */
- /* selected, this parameter is discarded. */
- if ((hcomp->Init.WindowMode == COMP_WINDOWMODE_DISABLED) ||
- (hcomp->Instance == COMP2) )
- {
- assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
- }
-
-
- /* Enable SYSCFG clock and the low level hardware to access comparators */
- if(hcomp->State == HAL_COMP_STATE_RESET)
- {
- /* Enable SYSCFG clock to control the routing Interface (RI) */
- __SYSCFG_CLK_ENABLE();
-
- /* Init the low level hardware */
- HAL_COMP_MspInit(hcomp);
- }
-
- /* Configuration of comparator: */
- /* - Output selection */
- /* - Inverting input selection */
- /* - Window mode */
- /* - Mode fast/slow speed */
- /* - Inverting input pull-up/down resistors */
-
- /* Configuration depending on comparator instance */
- if (hcomp->Instance == COMP1)
- {
- MODIFY_REG(COMP->CSR, COMP_CSR_400KPD | COMP_CSR_10KPD | COMP_CSR_400KPU | COMP_CSR_10KPU,
- hcomp->Init.NonInvertingInputPull );
- }
- else /* if (hcomp->Instance == COMP2) */
- {
- /* Note: If comparator 2 is not enabled, inverting input (parameter */
- /* "hcomp->Init.InvertingInput") is configured into function */
- /* "HAL_COMP_Start()" since inverting input selection also */
- /* enables the comparator 2. */
- /* If comparator 2 is already enabled, inverting input is */
- /* reconfigured on the fly. */
- if (__COMP_IS_ENABLED(hcomp) == RESET)
- {
- MODIFY_REG(COMP->CSR, COMP_CSR_OUTSEL |
- COMP_CSR_WNDWE |
- COMP_CSR_SPEED ,
- hcomp->Init.Output |
- hcomp->Init.WindowMode |
- hcomp->Init.Mode );
- }
- else
- {
- MODIFY_REG(COMP->CSR, COMP_CSR_OUTSEL |
- COMP_CSR_INSEL |
- COMP_CSR_WNDWE |
- COMP_CSR_SPEED ,
- hcomp->Init.Output |
- hcomp->Init.InvertingInput |
- hcomp->Init.WindowMode |
- hcomp->Init.Mode );
- }
- }
-
- /* Configure Routing Interface (RI) switches for comparator non-inverting */
- /* input. */
- /* Except in 2 cases: */
- /* - if non-inverting input has no selection: it can be the case for */
- /* COMP1 in window mode. */
- /* - particular case for PC3: if switch COMP1_SW1 is closed */
- /* (by macro "__HAL_OPAMP_OPAMP3OUT_CONNECT_ADC_COMP1()" or */
- /* "__HAL_RI_SWITCH_COMP1_SW1_CLOSE()"), connection between pin PC3 */
- /* (or OPAMP3, if available) and COMP1 is done directly, without going */
- /* through ADC switch matrix. */
- if (__COMP_ROUTING_INTERFACE_TOBECONFIGURED(hcomp))
- {
- if (hcomp->Instance == COMP1)
- {
- /* Enable the switch control mode */
- __HAL_RI_SWITCHCONTROLMODE_ENABLE();
-
- /* Close the analog switch of ADC switch matrix to COMP1 (ADC */
- /* channel 26: Vcomp) */
- __HAL_RI_IOSWITCH_CLOSE(RI_IOSWITCH_VCOMP);
- }
-
- /* Close the I/O analog switch corresponding to comparator */
- /* non-inverting input selected. */
- __HAL_RI_IOSWITCH_CLOSE(hcomp->Init.NonInvertingInput);
- }
-
-
- /* 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));
-
- /* Reset configuration depending on comparator instance */
- if (hcomp->Instance == COMP1)
- {
- CLEAR_BIT(COMP->CSR , COMP_CSR_400KPD | COMP_CSR_10KPD | COMP_CSR_400KPU | COMP_CSR_10KPU);
- }
- else /* if (hcomp->Instance == COMP2) */
- {
- CLEAR_BIT(COMP->CSR , COMP_CSR_OUTSEL |
- COMP_CSR_WNDWE |
- COMP_CSR_INSEL |
- COMP_CSR_SPEED );
- }
-
-
- /* Restore default state of Routing Interface (RI) switches for */
- /* comparator non-inverting input. */
- if (hcomp->Init.NonInvertingInput != COMP_NONINVERTINGINPUT_NONE)
- {
- /* Open the I/O analog switch corresponding to comparator */
- /* non-inverting input selected. */
- __HAL_RI_IOSWITCH_OPEN(hcomp->Init.NonInvertingInput);
- }
- if (hcomp->Instance == COMP1)
- {
- /* Open the analog switch of ADC switch matrix to COMP1 (ADC */
- /* channel 26: Vcomp) */
- __HAL_RI_IOSWITCH_OPEN(RI_IOSWITCH_VCOMP);
-
- /* Disable the switch control mode */
- __HAL_RI_SWITCHCONTROLMODE_DISABLE();
- }
-
-
- /* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
- HAL_COMP_MspDeInit(hcomp);
-
- hcomp->State = HAL_COMP_STATE_RESET;
-
- /* Process unlocked */
- __HAL_UNLOCK(hcomp);
- }
-
- 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 implenetd 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 I/O operation functions
- * @brief I/O operation functions
- *
-@verbatim
- ===============================================================================
- ##### IO operation functions #####
- ===============================================================================
- [..]
- This subsection provides a set of functions allowing to manage the COMP
- start and stop actions with or without interruption on ExtI line.
-
-@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;
- uint32_t wait_loop_cycles = 0;
- __IO uint32_t wait_loop_index = 0;
-
- /* 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)
- {
-
- /* Note: For comparator 2, inverting input (parameter */
- /* "hcomp->Init.InvertingInput") is configured into this */
- /* function instead of function "HAL_COMP_Init()" since */
- /* inverting input selection also enables the comparator 2. */
- __HAL_COMP_ENABLE(hcomp);
-
- /* Set delay for COMP startup time */
- if (hcomp->Instance == COMP1)
- {
- wait_loop_cycles = COMP1_START_DELAY_CPU_CYCLES;
- }
- else /* if (hcomp->Instance == COMP2) */
- {
- wait_loop_cycles = COMP2_START_DELAY_CPU_CYCLES;
- }
-
- /* Delay for COMP startup time. */
- /* Delay fixed to worst case: maximum CPU frequency */
- while(wait_loop_index < wait_loop_cycles)
- {
- wait_loop_index++;
- }
-
- /* Update COMP state */
- 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 */
- __HAL_COMP_DISABLE(hcomp);
-
- /* Update COMP state */
- 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;
-
- status = HAL_COMP_Start(hcomp);
- if(status == HAL_OK)
- {
- /* Check the parameter */
- assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
-
- /* Get the Exti Line output configuration */
- extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
-
- /* Configure the rising edge */
- /* COMP TriggerMode set to COMP_TRIGGERMODE_IT_RISING or */
- /* COMP_TRIGGERMODE_IT_RISING_FALLING. */
- 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 */
- /* COMP TriggerMode set to COMP_TRIGGERMODE_IT_FALLING or */
- /* COMP_TRIGGERMODE_IT_RISING_FALLING. */
- 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 Peripheral Control functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral Control functions #####
- ===============================================================================
- [..]
- This subsection provides a set of functions allowing to control the COMP
- management functions: Lock status, comparator output level check, IRQ
- callback (in case of usage of comparator with interruption on ExtI line).
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Lock the selected comparator configuration.
- * Caution: On STM32L1, HAL COMP lock is software lock only (not
- * hardware lock as on some other STM32 devices)
- * @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;
- }
-
- return status;
-}
-
-/**
- * @brief Return the output level (high or low) of the selected comparator.
- * The output level depends on the selected polarity.
- * - 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
- * @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));
-
- /* Read output level of the selected comparator */
- if(READ_BIT(COMP->CSR, __COMP_CSR_CMPXOUT(hcomp)) == RESET)
- {
- level = COMP_OUTPUTLEVEL_LOW;
- }
- else
- {
- level = COMP_OUTPUTLEVEL_HIGH;
- }
-
- return(level);
-}
-
-/**
- * @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.
-
-@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****/
