PWM working, reading input voltage signal.
This commit is contained in:
983
Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c
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983
Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c
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@@ -0,0 +1,983 @@
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/**
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******************************************************************************
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* @file stm32f0xx_hal_comp.c
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* @author MCD Application Team
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* @brief COMP HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the COMP peripheral:
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* + Initialization/de-initialization functions
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* + Peripheral Control functions
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* + Peripheral State functions
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@verbatim
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================================================================================
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##### COMP Peripheral features #####
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================================================================================
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[..]
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The STM32F0xx device family integrates up to 2 analog comparators COMP1 and COMP2:
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(+) The non inverting input and inverting input can be set to GPIO pins.
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(+) The COMP output is available using HAL_COMP_GetOutputLevel()
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and can be set on GPIO pins.
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(+) The COMP output can be redirected to embedded timers (TIM1, TIM2 and TIM3).
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(+) The comparators COMP1 and COMP2 can be combined in window mode.
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(+) The comparators have interrupt capability with wake-up
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from Sleep and Stop modes (through the EXTI controller):
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(++) COMP1 is internally connected to EXTI Line 21
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(++) COMP2 is internally connected to EXTI Line 22
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(+) From the corresponding IRQ handler, the right interrupt source can be retrieved with the
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macros __HAL_COMP_COMP1_EXTI_GET_FLAG() and __HAL_COMP_COMP2_EXTI_GET_FLAG().
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##### How to use this driver #####
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================================================================================
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[..]
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This driver provides functions to configure and program the Comparators of STM32F05x, STM32F07x and STM32F09x devices.
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To use the comparator, perform the following steps:
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(#) Fill in the HAL_COMP_MspInit() to
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(++) Configure the comparator input in analog mode using HAL_GPIO_Init()
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(++) Configure the comparator output in alternate function mode using HAL_GPIO_Init() to map the comparator
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output to the GPIO pin
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(++) If required enable the COMP interrupt by configuring and enabling EXTI line in Interrupt mode and
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selecting the desired sensitivity level using HAL_GPIO_Init() function. After that enable the comparator
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interrupt vector using HAL_NVIC_EnableIRQ() function.
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(#) Configure the comparator using HAL_COMP_Init() function:
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(++) Select the inverting input (input minus)
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(++) Select the non inverting input (input plus)
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(++) Select the output polarity
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(++) Select the output redirection
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(++) Select the hysteresis level
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(++) Select the power mode
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(++) Select the event/interrupt mode
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(++) Select the window mode
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-@@- HAL_COMP_Init() calls internally __HAL_RCC_SYSCFG_CLK_ENABLE() in order
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to access the comparator(s) registers.
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(#) Enable the comparator using HAL_COMP_Start() function or HAL_COMP_Start_IT() function for interrupt mode.
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(#) Use HAL_COMP_TriggerCallback() and/or HAL_COMP_GetOutputLevel() functions
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to manage comparator outputs (event/interrupt triggered and output level).
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(#) Disable the comparator using HAL_COMP_Stop() or HAL_COMP_Stop_IT()
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function.
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(#) De-initialize the comparator using HAL_COMP_DeInit() function.
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(#) For safety purposes comparator(s) can be locked using HAL_COMP_Lock() function.
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Only a MCU reset can reset that protection.
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*** Callback registration ***
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=============================================
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[..]
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The compilation flag USE_HAL_COMP_REGISTER_CALLBACKS, when set to 1,
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allows the user to configure dynamically the driver callbacks.
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Use Functions HAL_COMP_RegisterCallback()
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to register an interrupt callback.
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[..]
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Function HAL_COMP_RegisterCallback() allows to register following callbacks:
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(+) OperationCpltCallback : callback for End of operation.
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(+) ErrorCallback : callback for error detection.
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(+) MspInitCallback : callback for Msp Init.
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(+) MspDeInitCallback : callback for Msp DeInit.
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This function takes as parameters the HAL peripheral handle, the Callback ID
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and a pointer to the user callback function.
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[..]
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Use function HAL_COMP_UnRegisterCallback to reset a callback to the default
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weak function.
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[..]
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HAL_COMP_UnRegisterCallback takes as parameters the HAL peripheral handle,
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and the Callback ID.
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This function allows to reset following callbacks:
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(+) OperationCpltCallback : callback for End of operation.
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(+) ErrorCallback : callback for error detection.
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(+) MspInitCallback : callback for Msp Init.
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(+) MspDeInitCallback : callback for Msp DeInit.
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[..]
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By default, after the HAL_COMP_Init() and when the state is HAL_COMP_STATE_RESET
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all callbacks are set to the corresponding weak functions:
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examples HAL_COMP_OperationCpltCallback(), HAL_COMP_ErrorCallback().
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Exception done for MspInit and MspDeInit functions that are
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reset to the legacy weak functions in the HAL_COMP_Init()/ HAL_COMP_DeInit() only when
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these callbacks are null (not registered beforehand).
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[..]
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If MspInit or MspDeInit are not null, the HAL_COMP_Init()/ HAL_COMP_DeInit()
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keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state.
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[..]
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Callbacks can be registered/unregistered in HAL_COMP_STATE_READY state only.
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Exception done MspInit/MspDeInit functions that can be registered/unregistered
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in HAL_COMP_STATE_READY or HAL_COMP_STATE_RESET state,
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thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
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[..]
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Then, the user first registers the MspInit/MspDeInit user callbacks
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using HAL_COMP_RegisterCallback() before calling HAL_COMP_DeInit()
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or HAL_COMP_Init() function.
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[..]
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When the compilation flag USE_HAL_COMP_REGISTER_CALLBACKS is set to 0 or
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not defined, the callback registration feature is not available and all callbacks
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are set to the corresponding weak functions.
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@endverbatim
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******************************************************************************
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*/
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/*
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Additional Tables:
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Table 1. COMP Inputs for the STM32F05x, STM32F07x and STM32F09x devices
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+--------------------------------------------------+
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| | | COMP1 | COMP2 |
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|-----------------|----------------|---------------|
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| | 1/4 VREFINT | OK | OK |
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| | 1/2 VREFINT | OK | OK |
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| | 3/4 VREFINT | OK | OK |
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| Inverting Input | VREFINT | OK | OK |
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| | DAC1 OUT (PA4) | OK | OK |
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| | DAC2 OUT (PA5) | OK | OK |
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| | IO1 | PA0 | PA2 |
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|-----------------|----------------|-------|-------|
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| Non Inverting | | PA1 | PA3 |
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| Input | | | |
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+--------------------------------------------------+
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Table 2. COMP Outputs for the STM32F05x, STM32F07x and STM32F09x devices
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+---------------+
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| COMP1 | COMP2 |
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|-------|-------|
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| PA0 | PA2 |
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| PA6 | PA7 |
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| PA11 | PA12 |
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+---------------+
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Table 3. COMP Outputs redirection to embedded timers for the STM32F05x, STM32F07x and STM32F09x devices
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+---------------------------------+
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| COMP1 | COMP2 |
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|----------------|----------------|
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| TIM1 BKIN | TIM1 BKIN |
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| | |
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| TIM1 OCREFCLR | TIM1 OCREFCLR |
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| | |
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| TIM1 IC1 | TIM1 IC1 |
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| | |
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| TIM2 IC4 | TIM2 IC4 |
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| | |
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| TIM2 OCREFCLR | TIM2 OCREFCLR |
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| | |
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| TIM3 IC1 | TIM3 IC1 |
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| | |
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| TIM3 OCREFCLR | TIM3 OCREFCLR |
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+---------------------------------+
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_hal.h"
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#ifdef HAL_COMP_MODULE_ENABLED
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#if defined (COMP1) || defined (COMP2)
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/** @addtogroup STM32F0xx_HAL_Driver
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* @{
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*/
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/** @defgroup COMP COMP
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* @brief COMP HAL module driver
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup COMP_Private_Constants COMP Private Constants
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* @{
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*/
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/* Delay for COMP startup time. */
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/* Note: Delay required to reach propagation delay specification. */
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/* Literal set to maximum value (refer to device datasheet, */
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/* parameter "tSTART"). */
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/* Unit: us */
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#define COMP_DELAY_STARTUP_US (60U) /*!< Delay for COMP startup time */
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/* CSR register reset value */
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#define COMP_CSR_RESET_VALUE (0x00000000U)
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/* CSR register masks */
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#define COMP_CSR_RESET_PARAMETERS_MASK (0x00003FFFU)
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#define COMP_CSR_UPDATE_PARAMETERS_MASK (0x00003FFEU)
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/* CSR COMPx non inverting input mask */
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#define COMP_CSR_COMPxNONINSEL_MASK ((uint16_t)COMP_CSR_COMP1SW1)
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/* CSR COMP2 shift */
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#define COMP_CSR_COMP1_SHIFT 0U
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#define COMP_CSR_COMP2_SHIFT 16U
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/**
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* @}
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*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup COMP_Exported_Functions COMP Exported Functions
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* @{
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*/
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/** @defgroup COMP_Exported_Functions_Group1 Initialization/de-initialization functions
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* @brief Initialization and Configuration functions
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*
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@verbatim
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===============================================================================
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##### Initialization and Configuration functions #####
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===============================================================================
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[..] This section provides functions to initialize and de-initialize comparators
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@endverbatim
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* @{
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*/
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/**
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* @brief Initializes the COMP according to the specified
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* parameters in the COMP_InitTypeDef and create the associated handle.
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* @note If the selected comparator is locked, initialization can't be performed.
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* To unlock the configuration, perform a system reset.
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* @param hcomp COMP handle
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
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{
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HAL_StatusTypeDef status = HAL_OK;
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uint32_t regshift = COMP_CSR_COMP1_SHIFT;
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/* Check the COMP handle allocation and lock status */
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if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
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{
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status = HAL_ERROR;
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}
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else
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{
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/* Check the parameter */
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assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
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assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
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assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
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assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
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assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
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assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
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assert_param(IS_COMP_MODE(hcomp->Init.Mode));
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if(hcomp->Init.NonInvertingInput == COMP_NONINVERTINGINPUT_DAC1SWITCHCLOSED)
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{
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assert_param(IS_COMP_DAC1SWITCH_INSTANCE(hcomp->Instance));
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}
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if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE)
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{
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assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
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}
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/* Init SYSCFG and the low level hardware to access comparators */
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1)
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/* Init the COMP Callback settings */
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hcomp->TriggerCallback = HAL_COMP_TriggerCallback; /* Legacy weak callback */
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if (hcomp->MspInitCallback == NULL)
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{
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hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */
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}
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/* Init the low level hardware */
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hcomp->MspInitCallback(hcomp);
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#else
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/* Init the low level hardware : SYSCFG to access comparators */
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HAL_COMP_MspInit(hcomp);
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#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */
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if(hcomp->State == HAL_COMP_STATE_RESET)
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{
|
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/* Allocate lock resource and initialize it */
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hcomp->Lock = HAL_UNLOCKED;
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}
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|
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/* Change COMP peripheral state */
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hcomp->State = HAL_COMP_STATE_BUSY;
|
||||
|
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/* Set COMP parameters */
|
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/* Set COMPxINSEL bits according to hcomp->Init.InvertingInput value */
|
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/* Set COMPxOUTSEL bits according to hcomp->Init.Output value */
|
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/* Set COMPxPOL bit according to hcomp->Init.OutputPol value */
|
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/* Set COMPxHYST bits according to hcomp->Init.Hysteresis value */
|
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/* Set COMPxMODE bits according to hcomp->Init.Mode value */
|
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if(hcomp->Instance == COMP2)
|
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{
|
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regshift = COMP_CSR_COMP2_SHIFT;
|
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}
|
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MODIFY_REG(COMP->CSR,
|
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(COMP_CSR_COMPxINSEL | COMP_CSR_COMPxNONINSEL_MASK | \
|
||||
COMP_CSR_COMPxOUTSEL | COMP_CSR_COMPxPOL | \
|
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COMP_CSR_COMPxHYST | COMP_CSR_COMPxMODE) << regshift,
|
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(hcomp->Init.InvertingInput | \
|
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hcomp->Init.NonInvertingInput | \
|
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hcomp->Init.Output | \
|
||||
hcomp->Init.OutputPol | \
|
||||
hcomp->Init.Hysteresis | \
|
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hcomp->Init.Mode) << regshift);
|
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|
||||
if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE)
|
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{
|
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COMP->CSR |= COMP_CSR_WNDWEN;
|
||||
}
|
||||
|
||||
/* Initialize the COMP state*/
|
||||
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;
|
||||
uint32_t regshift = COMP_CSR_COMP1_SHIFT;
|
||||
|
||||
/* 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 for the corresponding COMP instance */
|
||||
if(hcomp->Instance == COMP2)
|
||||
{
|
||||
regshift = COMP_CSR_COMP2_SHIFT;
|
||||
}
|
||||
MODIFY_REG(COMP->CSR,
|
||||
COMP_CSR_RESET_PARAMETERS_MASK << regshift,
|
||||
COMP_CSR_RESET_VALUE << regshift);
|
||||
|
||||
#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1)
|
||||
if (hcomp->MspDeInitCallback == NULL)
|
||||
{
|
||||
hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */
|
||||
}
|
||||
|
||||
/* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
|
||||
hcomp->MspDeInitCallback(hcomp);
|
||||
#else
|
||||
/* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
|
||||
HAL_COMP_MspDeInit(hcomp);
|
||||
#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */
|
||||
|
||||
hcomp->State = HAL_COMP_STATE_RESET;
|
||||
|
||||
/* Release Lock */
|
||||
__HAL_UNLOCK(hcomp);
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Initializes 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 implenetd in the user file
|
||||
*/
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief DeInitializes 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 implenetd in the user file
|
||||
*/
|
||||
}
|
||||
|
||||
#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1)
|
||||
/**
|
||||
* @brief Register a User COMP Callback
|
||||
* To be used instead of the weak predefined callback
|
||||
* @param hcomp Pointer to a COMP_HandleTypeDef structure that contains
|
||||
* the configuration information for the specified COMP.
|
||||
* @param CallbackID ID of the callback to be registered
|
||||
* This parameter can be one of the following values:
|
||||
* @arg @ref HAL_COMP_TRIGGER_CB_ID Trigger callback ID
|
||||
* @arg @ref HAL_COMP_MSPINIT_CB_ID MspInit callback ID
|
||||
* @arg @ref HAL_COMP_MSPDEINIT_CB_ID MspDeInit callback ID
|
||||
* @param pCallback pointer to the Callback function
|
||||
* @retval HAL status
|
||||
*/
|
||||
HAL_StatusTypeDef HAL_COMP_RegisterCallback(COMP_HandleTypeDef *hcomp, HAL_COMP_CallbackIDTypeDef CallbackID, pCOMP_CallbackTypeDef pCallback)
|
||||
{
|
||||
HAL_StatusTypeDef status = HAL_OK;
|
||||
|
||||
if (pCallback == NULL)
|
||||
{
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
return HAL_ERROR;
|
||||
}
|
||||
|
||||
if (HAL_COMP_STATE_READY == hcomp->State)
|
||||
{
|
||||
switch (CallbackID)
|
||||
{
|
||||
case HAL_COMP_TRIGGER_CB_ID :
|
||||
hcomp->TriggerCallback = pCallback;
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPINIT_CB_ID :
|
||||
hcomp->MspInitCallback = pCallback;
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPDEINIT_CB_ID :
|
||||
hcomp->MspDeInitCallback = pCallback;
|
||||
break;
|
||||
|
||||
default :
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else if (HAL_COMP_STATE_RESET == hcomp->State)
|
||||
{
|
||||
switch (CallbackID)
|
||||
{
|
||||
case HAL_COMP_MSPINIT_CB_ID :
|
||||
hcomp->MspInitCallback = pCallback;
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPDEINIT_CB_ID :
|
||||
hcomp->MspDeInitCallback = pCallback;
|
||||
break;
|
||||
|
||||
default :
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Unregister a COMP Callback
|
||||
* COMP callback is redirected to the weak predefined callback
|
||||
* @param hcomp Pointer to a COMP_HandleTypeDef structure that contains
|
||||
* the configuration information for the specified COMP.
|
||||
* @param CallbackID ID of the callback to be unregistered
|
||||
* This parameter can be one of the following values:
|
||||
* @arg @ref HAL_COMP_TRIGGER_CB_ID Trigger callback ID
|
||||
* @arg @ref HAL_COMP_MSPINIT_CB_ID MspInit callback ID
|
||||
* @arg @ref HAL_COMP_MSPDEINIT_CB_ID MspDeInit callback ID
|
||||
* @retval HAL status
|
||||
*/
|
||||
HAL_StatusTypeDef HAL_COMP_UnRegisterCallback(COMP_HandleTypeDef *hcomp, HAL_COMP_CallbackIDTypeDef CallbackID)
|
||||
{
|
||||
HAL_StatusTypeDef status = HAL_OK;
|
||||
|
||||
if (HAL_COMP_STATE_READY == hcomp->State)
|
||||
{
|
||||
switch (CallbackID)
|
||||
{
|
||||
case HAL_COMP_TRIGGER_CB_ID :
|
||||
hcomp->TriggerCallback = HAL_COMP_TriggerCallback; /* Legacy weak callback */
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPINIT_CB_ID :
|
||||
hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPDEINIT_CB_ID :
|
||||
hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */
|
||||
break;
|
||||
|
||||
default :
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else if (HAL_COMP_STATE_RESET == hcomp->State)
|
||||
{
|
||||
switch (CallbackID)
|
||||
{
|
||||
case HAL_COMP_MSPINIT_CB_ID :
|
||||
hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */
|
||||
break;
|
||||
|
||||
case HAL_COMP_MSPDEINIT_CB_ID :
|
||||
hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */
|
||||
break;
|
||||
|
||||
default :
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Update the error code */
|
||||
hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK;
|
||||
|
||||
/* Return error status */
|
||||
status = HAL_ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @defgroup COMP_Exported_Functions_Group2 I/O 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)
|
||||
{
|
||||
uint32_t wait_loop_index = 0U;
|
||||
HAL_StatusTypeDef status = HAL_OK;
|
||||
uint32_t regshift = COMP_CSR_COMP1_SHIFT;
|
||||
|
||||
/* 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)
|
||||
{
|
||||
/* Enable the selected comparator */
|
||||
if(hcomp->Instance == COMP2)
|
||||
{
|
||||
regshift = COMP_CSR_COMP2_SHIFT;
|
||||
}
|
||||
SET_BIT(COMP->CSR, COMP_CSR_COMPxEN << regshift);
|
||||
|
||||
/* Set HAL COMP handle state */
|
||||
hcomp->State = HAL_COMP_STATE_BUSY;
|
||||
|
||||
/* Delay for COMP startup time */
|
||||
wait_loop_index = (COMP_DELAY_STARTUP_US * (SystemCoreClock / 1000000U));
|
||||
while(wait_loop_index != 0U)
|
||||
{
|
||||
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;
|
||||
uint32_t regshift = COMP_CSR_COMP1_SHIFT;
|
||||
|
||||
/* 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 selected comparator */
|
||||
if(hcomp->Instance == COMP2)
|
||||
{
|
||||
regshift = COMP_CSR_COMP2_SHIFT;
|
||||
}
|
||||
CLEAR_BIT(COMP->CSR, COMP_CSR_COMPxEN << regshift);
|
||||
|
||||
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 = 0U;
|
||||
|
||||
/* 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 = COMP_GET_EXTI_LINE(hcomp->Instance);
|
||||
/* Configure the rising edge */
|
||||
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET)
|
||||
{
|
||||
SET_BIT(EXTI->RTSR, extiline);
|
||||
}
|
||||
else
|
||||
{
|
||||
CLEAR_BIT(EXTI->RTSR, extiline);
|
||||
}
|
||||
/* Configure the falling edge */
|
||||
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET)
|
||||
{
|
||||
SET_BIT(EXTI->FTSR, extiline);
|
||||
}
|
||||
else
|
||||
{
|
||||
CLEAR_BIT(EXTI->FTSR, extiline);
|
||||
}
|
||||
|
||||
/* Clear COMP EXTI pending bit */
|
||||
WRITE_REG(EXTI->PR, extiline);
|
||||
|
||||
/* Enable Exti interrupt mode */
|
||||
SET_BIT(EXTI->IMR, 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 */
|
||||
CLEAR_BIT(EXTI->IMR, 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(READ_BIT(EXTI->PR, extiline) != RESET)
|
||||
{
|
||||
/* Clear COMP Exti pending bit */
|
||||
WRITE_REG(EXTI->PR, extiline);
|
||||
|
||||
/* COMP trigger callback */
|
||||
#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1)
|
||||
hcomp->TriggerCallback(hcomp);
|
||||
#else
|
||||
HAL_COMP_TriggerCallback(hcomp);
|
||||
#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @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;
|
||||
uint32_t regshift = COMP_CSR_COMP1_SHIFT;
|
||||
|
||||
/* 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 */
|
||||
hcomp->State |= COMP_STATE_BIT_LOCK;
|
||||
|
||||
/* Set the lock bit corresponding to selected comparator */
|
||||
if(hcomp->Instance == COMP2)
|
||||
{
|
||||
regshift = COMP_CSR_COMP2_SHIFT;
|
||||
}
|
||||
SET_BIT(COMP->CSR, COMP_CSR_COMPxLOCK << regshift);
|
||||
}
|
||||
|
||||
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;
|
||||
uint32_t regshift = COMP_CSR_COMP1_SHIFT;
|
||||
|
||||
/* Check the parameter */
|
||||
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
|
||||
|
||||
if(hcomp->Instance == COMP2)
|
||||
{
|
||||
regshift = COMP_CSR_COMP2_SHIFT;
|
||||
}
|
||||
level = READ_BIT(COMP->CSR, COMP_CSR_COMPxOUT << regshift);
|
||||
|
||||
if(level != 0U)
|
||||
{
|
||||
return(COMP_OUTPUTLEVEL_HIGH);
|
||||
}
|
||||
return(COMP_OUTPUTLEVEL_LOW);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Comparator trigger 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
|
||||
and the data flow.
|
||||
|
||||
@endverbatim
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Return the COMP state
|
||||
* @param hcomp COMP handle
|
||||
* @retval HAL state
|
||||
*/
|
||||
uint32_t 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 hcomp->State;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return the COMP error code.
|
||||
* @param hcomp COMP handle
|
||||
* @retval COMP error code
|
||||
*/
|
||||
uint32_t HAL_COMP_GetError(COMP_HandleTypeDef *hcomp)
|
||||
{
|
||||
/* Check the parameters */
|
||||
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
|
||||
|
||||
return hcomp->ErrorCode;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* COMP1 || COMP2 */
|
||||
|
||||
#endif /* HAL_COMP_MODULE_ENABLED */
|
||||
|
||||
|
||||
Reference in New Issue
Block a user