| /** | |
| ****************************************************************************** | |
| * @file stm32f3xx_hal_comp.c | |
| * @author MCD Application Team | |
| * @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. | |
| * + 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. | |
| For 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. | |
| For 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...). | |
| For STM32F3xx devices please refer to the COMP peripheral section in corresponding | |
| Reference Manual. | |
| (#) Each couple of comparators COMP1 and COMP2, COMP3 and COMP4, COMP5 and COMP6 can be combined in window | |
| mode and respectively COMP1, COMP3 and COMP5 non inverting input is used as common 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 | |
| adequate macro __HAL_COMP_COMPx_EXTI_GET_FLAG(). | |
| ##### 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 (EXTI line 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_SetPriority() and HAL_NVIC_EnableIRQ() functions. | |
| (#) Configure the comparator using HAL_COMP_Init() function: | |
| (++) Select the inverting input (input minus) | |
| (++) Select the non-inverting input (input plus) | |
| (++) Select the output polarity | |
| (++) Select the output redirection | |
| (++) Select the hysteresis level | |
| (++) Select the power mode | |
| (++) Select the event/interrupt mode | |
| -@@- HAL_COMP_Init() calls internally __HAL_RCC_SYSCFG_CLK_ENABLE() in order | |
| to enable the comparator(s). | |
| (#) On-the-fly reconfiguration of comparator(s) may be done by calling again HAL_COMP_Init( | |
| function with new input parameter values; HAL_COMP_MspInit() function shall be adapted | |
| to support multi configurations. | |
| (#) Enable the comparator using HAL_COMP_Start() or HAL_COMP_Start_IT() functions. | |
| (#) Use HAL_COMP_TriggerCallback() and/or HAL_COMP_GetOutputLevel() functions | |
| to manage comparator outputs (events and output level). | |
| (#) Disable the comparator using HAL_COMP_Stop() or HAL_COMP_Stop_IT() | |
| function. | |
| (#) De-initialize the comparator using HAL_COMP_DeInit() function. | |
| (#) For safety purposes comparator(s) can be locked using HAL_COMP_Lock() function. | |
| Only a MCU reset can reset that protection. | |
| @endverbatim | |
| ****************************************************************************** | |
| * @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. | |
| * | |
| ****************************************************************************** | |
| */ | |
| /* | |
| Additional Tables: | |
| Table 1. COMP Inputs for the STM32F303xB/STM32F303xC/STM32F303xE devices | |
| +------------------------------------------------------------------------------------------+ | |
| | | | COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 | | |
| |-----------------|----------------|---------------|---------------------------------------| | |
| | | 1U/4 VREFINT | OK | OK | OK | OK | OK | OK | OK | | |
| | | 1U/2 VREFINT | OK | OK | OK | OK | OK | OK | OK | | |
| | | 3U/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 | PD15U | PE8 | PD13U | PD10U | PC0 | | |
| | | IO2 | --- | --- | PB12U | PB2 | PB10U | PB15U | --- | | |
| |-----------------|----------------|-------|-------|-------|-------|-------|-------|-------| | |
| | Non Inverting | IO1 | PA1 | PA7 | PB14U | PB0 | PD12U | PD11U | PA0 | | |
| | Input | IO2 | --- | PA3 | PD14U | PE7 | PB13U | PB11U | PC1 | | |
| +------------------------------------------------------------------------------------------+ | |
| Table 2. COMP Outputs for the STM32F303xB/STM32F303xC/STM32F303xE devices | |
| +-------------------------------------------------------+ | |
| | COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 | | |
| |-------|-------|-------|-------|-------|-------|-------| | |
| | PA0 | PA2 | PB1 | PC8 | PC7 | PA10U | PC2 | | |
| | PF4 | PA7 | --- | PA8 | PA9 | PC6 | --- | | |
| | PA6 | PA12U | --- | --- | --- | --- | --- | | |
| | PA11U | 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 (1U) | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN (1U) | | |
| | | | | | | | | | |
| | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | | |
| | | | | | | | | | |
| | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN (1U) | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN (1U) | | |
| | | | | | | | | | |
| | 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 (1U)| TIM20 BKIN | TIM20 BKIN | TIM20 BKIN (1U)| | |
| | | | | | | | | | |
| | 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 | | |
| | | | | | | | | | |
| +----------------------------------------------------------------------------------------------------------------------+ | |
| (1U): This connection consists of connecting both GPIO and COMP output to TIM1/8U/20 BRK input through an OR gate, instead | |
| of connecting the GPIO to the TIM1/8U/20 BRK input and the COMP output to the TIM1/8U/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 | | |
| | | | | | | | | | |
| +----------------------------------------------------------------------------------------------------------------------+ | |
| */ | |
| /* Includes ------------------------------------------------------------------*/ | |
| #include "stm32f3xx_hal.h" | |
| /** @addtogroup STM32F3xx_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 | |
| * @{ | |
| */ | |
| #define COMP_LOCK_DISABLE (0x00000000U) | |
| #define COMP_LOCK_ENABLE COMP_CSR_COMPxLOCK | |
| /** | |
| * @} | |
| */ | |
| /* 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 peripheral according to the specified | |
| * parameters in the COMP_InitTypeDef and initialize the associated handle. | |
| * @note If the selected comparator is locked, initialization cannot 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 == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) | |
| { | |
| status = HAL_ERROR; | |
| } | |
| else | |
| { | |
| /* Check the parameters */ | |
| 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_OUTPUT_INSTANCE(hcomp->Instance, 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)); | |
| assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode)); | |
| if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE) | |
| { | |
| assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance)); | |
| assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode)); | |
| } | |
| /* Init SYSCFG and the low level hardware to access comparators */ | |
| __HAL_RCC_SYSCFG_CLK_ENABLE(); | |
| /* Init the low level hardware : SYSCFG to access comparators */ | |
| HAL_COMP_MspInit(hcomp); | |
| if(hcomp->State == HAL_COMP_STATE_RESET) | |
| { | |
| /* Allocate lock resource and initialize it */ | |
| hcomp->Lock = HAL_UNLOCKED; | |
| } | |
| /* Manage inverting input comparator inverting input connected to a GPIO */ | |
| /* for STM32F302x, STM32F32xx, STM32F33x. */ | |
| hcomp->Init.InvertingInput = COMP_INVERTINGINPUT_SELECTION(hcomp->Instance, hcomp->Init.InvertingInput); | |
| /* 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*/ | |
| hcomp->State = HAL_COMP_STATE_READY; | |
| } | |
| return status; | |
| } | |
| /** | |
| * @brief DeInitialize the COMP peripheral. | |
| * @note If the selected comparator is locked, deinitialization cannot be performed. | |
| * 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) || ((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; | |
| /* 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 | |
| =============================================================================== | |
| ##### Start Stop operation functions ##### | |
| =============================================================================== | |
| [..] This section provides functions allowing to: | |
| (+) Start a comparator without interrupt generation. | |
| (+) Stop a comparator without interrupt generation. | |
| (+) Start a comparator with interrupt generation. | |
| (+) Stop a comparator with interrupt generation. | |
| (+) Handle interrupts from a comparator with associated callback function. | |
| @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 extiline = 0U; | |
| /* Check the COMP handle allocation and lock status */ | |
| if((hcomp == 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) | |
| { | |
| /* Get the EXTI Line output configuration */ | |
| extiline = COMP_GET_EXTI_LINE(hcomp->Instance); | |
| /* Configure the event generation */ | |
| if((hcomp->Init.TriggerMode & (COMP_TRIGGERMODE_EVENT_RISING|COMP_TRIGGERMODE_EVENT_FALLING)) != RESET) | |
| { | |
| /* Configure the event trigger rising edge */ | |
| if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_EVENT_RISING) != RESET) | |
| { | |
| COMP_EXTI_RISING_ENABLE(extiline); | |
| } | |
| else | |
| { | |
| COMP_EXTI_RISING_DISABLE(extiline); | |
| } | |
| /* Configure the trigger falling edge */ | |
| if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_EVENT_FALLING) != RESET) | |
| { | |
| COMP_EXTI_FALLING_ENABLE(extiline); | |
| } | |
| else | |
| { | |
| COMP_EXTI_FALLING_DISABLE(extiline); | |
| } | |
| /* Enable EXTI event generation */ | |
| COMP_EXTI_ENABLE_EVENT(extiline); | |
| /* Clear COMP EXTI pending bit */ | |
| COMP_EXTI_CLEAR_FLAG(extiline); | |
| } | |
| /* Enable the selected comparator */ | |
| __HAL_COMP_ENABLE(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 == 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 EXTI Line event mode if any */ | |
| COMP_EXTI_DISABLE_EVENT(COMP_GET_EXTI_LINE(hcomp->Instance)); | |
| /* Disable the selected comparator */ | |
| __HAL_COMP_DISABLE(hcomp); | |
| hcomp->State = HAL_COMP_STATE_READY; | |
| } | |
| else | |
| { | |
| status = HAL_ERROR; | |
| } | |
| } | |
| return status; | |
| } | |
| /** | |
| * @brief Start the comparator in Interrupt mode. | |
| * @param hcomp COMP handle | |
| * @retval HAL status. | |
| */ | |
| HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp) | |
| { | |
| HAL_StatusTypeDef status = HAL_OK; | |
| uint32_t extiline = 0U; | |
| /* Check the COMP handle allocation and lock status */ | |
| if((hcomp == 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) | |
| { | |
| /* Configure the EXTI event generation */ | |
| if((hcomp->Init.TriggerMode & (COMP_TRIGGERMODE_IT_RISING|COMP_TRIGGERMODE_IT_FALLING)) != RESET) | |
| { | |
| /* Get the EXTI Line output configuration */ | |
| extiline = COMP_GET_EXTI_LINE(hcomp->Instance); | |
| /* Configure the trigger rising edge */ | |
| if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET) | |
| { | |
| COMP_EXTI_RISING_ENABLE(extiline); | |
| } | |
| else | |
| { | |
| COMP_EXTI_RISING_DISABLE(extiline); | |
| } | |
| /* Configure the trigger falling edge */ | |
| if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET) | |
| { | |
| COMP_EXTI_FALLING_ENABLE(extiline); | |
| } | |
| else | |
| { | |
| COMP_EXTI_FALLING_DISABLE(extiline); | |
| } | |
| /* Clear COMP EXTI pending bit if any */ | |
| COMP_EXTI_CLEAR_FLAG(extiline); | |
| /* Enable EXTI interrupt mode */ | |
| COMP_EXTI_ENABLE_IT(extiline); | |
| /* Enable the selected comparator */ | |
| __HAL_COMP_ENABLE(hcomp); | |
| hcomp->State = HAL_COMP_STATE_BUSY; | |
| } | |
| else | |
| { | |
| status = HAL_ERROR; | |
| } | |
| } | |
| else | |
| { | |
| status = HAL_ERROR; | |
| } | |
| } | |
| return status; | |
| } | |
| /** | |
| * @brief Stop the comparator in Interrupt mode. | |
| * @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 */ | |
| COMP_EXTI_DISABLE_IT(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 = COMP_GET_EXTI_LINE(hcomp->Instance); | |
| /* Check COMP EXTI flag */ | |
| if(COMP_EXTI_GET_FLAG(extiline) != RESET) | |
| { | |
| /* Clear COMP EXTI pending bit */ | |
| COMP_EXTI_CLEAR_FLAG(extiline); | |
| /* COMP trigger user callback */ | |
| HAL_COMP_TriggerCallback(hcomp); | |
| } | |
| } | |
| /** | |
| * @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_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. | |
| * @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) || ((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 on state */ | |
| switch(hcomp->State) | |
| { | |
| case HAL_COMP_STATE_BUSY: | |
| hcomp->State = HAL_COMP_STATE_BUSY_LOCKED; | |
| break; | |
| case HAL_COMP_STATE_READY: | |
| hcomp->State = HAL_COMP_STATE_READY_LOCKED; | |
| break; | |
| default: | |
| /* unexpected state */ | |
| status = HAL_ERROR; | |
| break; | |
| } | |
| } | |
| 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 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: | |
| * @arg @ref COMP_OUTPUTLEVEL_LOW | |
| * @arg @ref COMP_OUTPUTLEVEL_HIGH | |
| * | |
| */ | |
| uint32_t HAL_COMP_GetOutputLevel(COMP_HandleTypeDef *hcomp) | |
| { | |
| uint32_t level=0U; | |
| /* Check the parameter */ | |
| assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); | |
| level = READ_BIT(hcomp->Instance->CSR, COMP_CSR_COMPxOUT); | |
| if(level != 0U) | |
| { | |
| return(COMP_OUTPUTLEVEL_HIGH); | |
| } | |
| return(COMP_OUTPUTLEVEL_LOW); | |
| } | |
| /** | |
| * @} | |
| */ | |
| /** @defgroup COMP_Exported_Functions_Group4 Peripheral State functions | |
| * @brief Peripheral State functions. | |
| * | |
| @verbatim | |
| =============================================================================== | |
| ##### Peripheral State functions ##### | |
| =============================================================================== | |
| [..] | |
| This subsection permits 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 COMP handle state */ | |
| return hcomp->State; | |
| } | |
| /** | |
| * @} | |
| */ | |
| /** | |
| * @} | |
| */ | |
| #endif /* HAL_COMP_MODULE_ENABLED */ | |
| /** | |
| * @} | |
| */ | |
| /** | |
| * @} | |
| */ | |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |