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835 lines
35 KiB
C
835 lines
35 KiB
C
/**
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******************************************************************************
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* @file stm32f3xx_hal_comp.c
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* @author MCD Application Team
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* @version V1.3.0
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* @date 01-July-2016
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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 and de-initialization functions
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* + Start/Stop operation functions in polling mode.
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* + Start/Stop operation functions in interrupt mode.
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* + Peripheral Control functions
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* + Peripheral State functions
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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 STM32F3xx device family integrates up to 7 analog comparators COMP1, COMP2...COMP7:
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(#) The non inverting input and inverting input can be set to GPIO pins.
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For STM32F3xx devices please refer to the COMP peripheral section in corresponding
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Reference Manual.
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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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For STM32F3xx devices please refer to the COMP peripheral section in corresponding
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Reference Manual.
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(#) The COMP output can be redirected to embedded timers (TIM1, TIM2, TIM3...).
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For STM32F3xx devices please refer to the COMP peripheral section in corresponding
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Reference Manual.
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(#) Each couple of comparators COMP1 and COMP2, COMP3 and COMP4, COMP5 and COMP6 can be combined in window
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mode and respectively COMP1, COMP3 and COMP5 non inverting input is used as common non-inverting input.
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(#) The seven 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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(++) COMP3 is internally connected to EXTI Line 29
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(++) COMP4 is internally connected to EXTI Line 30
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(++) COMP5 is internally connected to EXTI Line 31
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(++) COMP6 is internally connected to EXTI Line 32
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(++) COMP7 is internally connected to EXTI Line 33.
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From the corresponding IRQ handler, the right interrupt source can be retrieved with the
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adequate macro __HAL_COMP_COMPx_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 all STM32F3xx 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 (EXTI line 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_SetPriority() and HAL_NVIC_EnableIRQ() functions.
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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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-@@- HAL_COMP_Init() calls internally __HAL_RCC_SYSCFG_CLK_ENABLE() in order
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to enable the comparator(s).
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(#) On-the-fly reconfiguration of comparator(s) may be done by calling again HAL_COMP_Init(
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function with new input parameter values; HAL_COMP_MspInit() function shall be adapted
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to support multi configurations.
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(#) Enable the comparator using HAL_COMP_Start() or HAL_COMP_Start_IT() functions.
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(#) Use HAL_COMP_TriggerCallback() and/or HAL_COMP_GetOutputLevel() functions
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to manage comparator outputs (events 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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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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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 STM32F303xB/STM32F303xC/STM32F303xE devices
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+------------------------------------------------------------------------------------------+
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| | | COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
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|-----------------|----------------|---------------|---------------------------------------|
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| | 1/4 VREFINT | OK | OK | OK | OK | OK | OK | OK |
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| | 1/2 VREFINT | OK | OK | OK | OK | OK | OK | OK |
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| | 3/4 VREFINT | OK | OK | OK | OK | OK | OK | OK |
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| Inverting Input | VREFINT | OK | OK | OK | OK | OK | OK | OK |
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| | DAC1 OUT (PA4) | OK | OK | OK | OK | OK | OK | OK |
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| | DAC2 OUT (PA5) | OK | OK | OK | OK | OK | OK | OK |
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| | IO1 | PA0 | PA2 | PD15 | PE8 | PD13 | PD10 | PC0 |
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| | IO2 | --- | --- | PB12 | PB2 | PB10 | PB15 | --- |
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|-----------------|----------------|-------|-------|-------|-------|-------|-------|-------|
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| Non Inverting | IO1 | PA1 | PA7 | PB14 | PB0 | PD12 | PD11 | PA0 |
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| Input | IO2 | --- | PA3 | PD14 | PE7 | PB13 | PB11 | PC1 |
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+------------------------------------------------------------------------------------------+
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Table 2. COMP Outputs for the STM32F303xB/STM32F303xC/STM32F303xE devices
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+-------------------------------------------------------+
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| COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
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|-------|-------|-------|-------|-------|-------|-------|
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| PA0 | PA2 | PB1 | PC8 | PC7 | PA10 | PC2 |
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| PF4 | PA7 | --- | PA8 | PA9 | PC6 | --- |
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| PA6 | PA12 | --- | --- | --- | --- | --- |
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| PA11 | PB9 | --- | --- | --- | --- | --- |
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| PB8 | --- | --- | --- | --- | --- | --- |
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+-------------------------------------------------------+
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Table 3. COMP Outputs redirection to embedded timers for the STM32F303xB/STM32F303xC devices
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+----------------------------------------------------------------------------------------------------------------------+
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| COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
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|----------------|----------------|----------------|----------------|----------------|----------------|----------------|
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| TIM1 BKIN | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN |
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| | | | | | | |
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| TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 |
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| | | | | | | |
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| TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN |
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| | | | | | | |
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| TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 |
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| | | | | | | |
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| TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 |
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| + | + | + | + | + | + | + |
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| TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 |
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| | | | | | | |
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| TIM1 OCREFCLR | TIM1 OCREFCLR | TIM1 OCREFCLR | TIM8 OCREFCLR | TIM8 OCREFCLR | TIM8 OCREFCLR | TIM1 OCREFCLR |
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| | | | | | | |
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| TIM1 IC1 | TIM1 IC1 | TIM2 OCREFCLR | TIM3 IC3 | TIM2 IC1 | TIM2 IC2 | TIM8 OCREFCLR |
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| | | | | | | |
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| TIM2 IC4 | TIM2 IC4 | TIM3 IC2 | TIM3 OCREFCLR | TIM3 OCREFCLR | TIM2 OCREFCLR | TIM2 IC3 |
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| | | | | | | |
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| TIM2 OCREFCLR | TIM2 OCREFCLR | TIM4 IC1 | TIM4 IC2 | TIM4 IC3 | TIM16 OCREFCLR| TIM1 IC2 |
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| TIM3 IC1 | TIM3 IC1 | TIM15 IC1 | TIM15 OCREFCLR| TIM16 BKIN | TIM16 IC1 | TIM17 OCREFCLR|
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| TIM3 OCREFCLR | TIM3 OCREFCLR | TIM15 BKIN | TIM15 IC2 | TIM17 IC1 | TIM4 IC4 | TIM17 BKIN |
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+----------------------------------------------------------------------------------------------------------------------+
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Table 4. COMP Outputs redirection to embedded timers for the STM32F303xE devices
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+----------------------------------------------------------------------------------------------------------------------+
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| COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
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|----------------|----------------|----------------|----------------|----------------|----------------|----------------|
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| TIM1 BKIN | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN (1) | TIM1 BKIN | TIM1 BKIN | TIM1 BKIN (1) |
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| | | | | | | |
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| TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 |
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| | | | | | | |
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| TIM8 BKIN | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN (1) | TIM8 BKIN | TIM8 BKIN | TIM8 BKIN (1) |
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| | | | | | | |
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| TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 |
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| | | | | | | |
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| TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 |
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| + | + | + | + | + | + | + |
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| TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 | TIM8BKIN2 |
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| | | | | | | |
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| TIM1 OCREFCLR | TIM1 OCREFCLR | TIM1 OCREFCLR | TIM8 OCREFCLR | TIM8 OCREFCLR | TIM8 OCREFCLR | TIM1 OCREFCLR |
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| | | | | | | |
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| TIM1 IC1 | TIM1 IC1 | TIM2 OCREFCLR | TIM3 IC3 | TIM2 IC1 | TIM2 IC2 | TIM8 OCREFCLR |
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| | | | | | | |
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| TIM2 IC4 | TIM2 IC4 | TIM3 IC2 | TIM3 OCREFCLR | TIM3 OCREFCLR | TIM2 OCREFCLR | TIM2 IC3 |
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| TIM2 OCREFCLR | TIM2 OCREFCLR | TIM4 IC1 | TIM4 IC2 | TIM4 IC3 | TIM16 OCREFCLR| TIM1 IC2 |
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| TIM3 IC1 | TIM3 IC1 | TIM15 IC1 | TIM15 OCREFCLR| TIM16 BKIN | TIM16 IC1 | TIM17 OCREFCLR|
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| TIM3 OCREFCLR | TIM3 OCREFCLR | TIM15 BKIN | TIM15 IC2 | TIM17 IC1 | TIM4 IC4 | TIM17 BKIN |
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| | | | | | | |
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| TIM20 BKIN | TIM20 BKIN | TIM20 BKIN | TIM20 BKIN (1)| TIM20 BKIN | TIM20 BKIN | TIM20 BKIN (1)|
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| | | | | | | |
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| TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 |
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| | | | | | | |
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| TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 | TIM1 BKIN2 |
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| + | + | + | + | + | + | + |
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| TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 | TIM8 BKIN2 |
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| + | + | + | + | + | + | + |
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| TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 | TIM20 BKIN2 |
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+----------------------------------------------------------------------------------------------------------------------+
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(1): This connection consists of connecting both GPIO and COMP output to TIM1/8/20 BRK input through an OR gate, instead
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of connecting the GPIO to the TIM1/8/20 BRK input and the COMP output to the TIM1/8/20 BRK_ACTH input. The aim is to
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add a digital filter (3 bits) on the COMP output.
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Table 5. COMP Outputs blanking sources for the STM32F303xB/STM32F303xC/STM32F303xE devices
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+----------------------------------------------------------------------------------------------------------------------+
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| COMP1 | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7 |
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|----------------|----------------|----------------|----------------|----------------|----------------|----------------|
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| TIM1 OC5 | TIM1 OC5 | TIM1 OC5 | TIM3 OC4 | -------- | TIM8 OC5 | TIM1 OC5 |
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| | | | | | | |
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| TIM2 OC3 | TIM2 OC3 | -------- | TIM8 OC5 | TIM3 OC3 | TIM2 OC4 | TIM8 OC5 |
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| | | | | | | |
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| TIM3 OC3 | TIM3 OC3 | TIM2 OC4 | TIM15 OC1 | TIM8 OC5 | TIM15 OC2 | TIM15 OC2 |
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+----------------------------------------------------------------------------------------------------------------------+
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f3xx_hal.h"
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/** @addtogroup STM32F3xx_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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#ifdef HAL_COMP_MODULE_ENABLED
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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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#define COMP_LOCK_DISABLE ((uint32_t)0x00000000)
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#define COMP_LOCK_ENABLE COMP_CSR_COMPxLOCK
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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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/* Exported 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 de-initialization functions.
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*
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@verbatim
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===============================================================================
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##### Initialization and de-initialization 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 Initialize the COMP peripheral according to the specified
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* parameters in the COMP_InitTypeDef and initialize the associated handle.
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* @note If the selected comparator is locked, initialization cannot 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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/* 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 parameters */
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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_NONINVERTINGINPUT_INSTANCE(hcomp->Instance, hcomp->Init.NonInvertingInput));
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assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
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assert_param(IS_COMP_OUTPUT_INSTANCE(hcomp->Instance, 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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assert_param(IS_COMP_BLANKINGSRCE(hcomp->Init.BlankingSrce));
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assert_param(IS_COMP_BLANKINGSRCE_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce));
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assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
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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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assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
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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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/* Init the low level hardware : SYSCFG to access comparators */
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HAL_COMP_MspInit(hcomp);
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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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/* Manage inverting input comparator inverting input connected to a GPIO */
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/* for STM32F302x, STM32F32xx, STM32F33x. */
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hcomp->Init.InvertingInput = COMP_INVERTINGINPUT_SELECTION(hcomp->Instance, hcomp->Init.InvertingInput);
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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 COMPxNONINSEL bits according to hcomp->Init.NonInvertingInput value */
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/* Set COMPxBLANKING bits according to hcomp->Init.BlankingSrce 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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COMP_INIT(hcomp);
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/* Initialize the COMP state*/
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hcomp->State = HAL_COMP_STATE_READY;
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}
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return status;
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}
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/**
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* @brief DeInitialize the COMP peripheral.
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* @note If the selected comparator is locked, deinitialization cannot 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_DeInit(COMP_HandleTypeDef *hcomp)
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{
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HAL_StatusTypeDef status = HAL_OK;
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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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/* Set COMP_CSR register to reset value */
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COMP_DEINIT(hcomp);
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/* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
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HAL_COMP_MspDeInit(hcomp);
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hcomp->State = HAL_COMP_STATE_RESET;
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/* Release Lock */
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__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 = 0;
|
|
|
|
/* 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 = 0;
|
|
|
|
/* 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=0;
|
|
|
|
/* Check the parameter */
|
|
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
|
|
|
|
level = READ_BIT(hcomp->Instance->CSR, COMP_CSR_COMPxOUT);
|
|
|
|
if(level != 0)
|
|
{
|
|
return(COMP_OUTPUTLEVEL_HIGH);
|
|
}
|
|
return(COMP_OUTPUTLEVEL_LOW);
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @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****/
|