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/*!
* @file apm32f0xx_comp.c
*
* @brief This file contains all the functions for the COMP peripheral
*
* @version V1.0.3
*
* @date 2022-09-20
*
* @attention
*
* Copyright (C) 2020-2022 Geehy Semiconductor
*
* You may not use this file except in compliance with the
* GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
*
* The program is only for reference, which is distributed in the hope
* that it will be useful and instructional for customers to develop
* their software. Unless required by applicable law or agreed to in
* writing, the program is distributed on an "AS IS" BASIS, WITHOUT
* ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
* See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
* and limitations under the License.
*/
/* Includes */
#include "apm32f0xx_comp.h"
#include "apm32f0xx_rcm.h"
/** @addtogroup APM32F0xx_StdPeriphDriver
@{
*/
/** @addtogroup COMP_Driver
@{
*/
/** @defgroup COMP_Macros Macros
@{
*/
/**@} end of group COMP_Macros */
/** @defgroup COMP_Enumerations Enumerations
@{
*/
/**@} end of group COMP_Enumerations */
/** @defgroup COMP_Structures Structures
@{
*/
/**@} end of group COMP_Structures */
/** @defgroup COMP_Variables Variables
@{
*/
/**@} end of group COMP_Variables */
/** @defgroup COMP_Functions Functions
@{
*/
/*!
* @brief Reset COMP peripheral registers to their default values.
*
* @param None
*
* @retval None
*
* @note Deinitialization can't be performed if the COMP configuration is locked.
* To unlock the configuration, perform a system reset.
*/
void COMP_Reset(void)
{
COMP->CSTS = ((uint32_t)0x00000000);
}
/*!
* @brief Configs the COMP peripheral according to the specified parameters
* in COMP_InitStruct
*
* @param compSelect: the selected comparator.
* This parameter can be one of the following values:
* @arg COMP_SELECT_COMP1: COMP1 selected
* @arg COMP_SELECT_COMP2: COMP2 selected
*
* @param compConfig: pointer to an COMP_Config_T structure that contains
* the configuration information for the specified COMP peripheral.
*
* @retval None
*
* @note If the selected comparator is locked, initialization can't be performed.
* To unlock the configuration, perform a system reset.
*
* @note By default, PA1 is selected as COMP1 non inverting input.
* To use PA4 as COMP1 non inverting input call COMP_EnableSwitch() after COMP_Config()
*
*/
void COMP_Config(COMP_SELECT_T compSelect, COMP_Config_T* compConfig)
{
if (compSelect == COMP_SELECT_COMP1)
{
COMP->CSTS_B.INVINSEL1 = compConfig->invertingInput;
COMP->CSTS_B.OUTSEL1 = compConfig->output;
COMP->CSTS_B.OPINV1 = compConfig->outputPol;
COMP->CSTS_B.HYSCFG1 = compConfig->hysterrsis;
COMP->CSTS_B.MOD1 = compConfig->mode;
}
else
{
COMP->CSTS_B.INVINSEL2 = compConfig->invertingInput;
COMP->CSTS_B.OUTSEL2 = compConfig->output;
COMP->CSTS_B.OPINV2 = compConfig->outputPol;
COMP->CSTS_B.HYSCFG2 = compConfig->hysterrsis;
COMP->CSTS_B.MOD2 = compConfig->mode;
}
}
/*!
* @brief Fills each compConfig member with initial value value.
*
* @param compConfig: pointer to an COMP_InitTypeDef structure which will
* be initialized.
*
* @retval None
*/
void COMP_ConfigStructInit(COMP_Config_T* compConfig)
{
compConfig->invertingInput = COMP_INVERTING_INPUT_1_4VREFINT;
compConfig->output = COMP_OUTPUT_NONE;
compConfig->outputPol = COMP_OUTPUTPOL_NONINVERTED;
compConfig->hysterrsis = COMP_HYSTERRSIS_NO;
compConfig->mode = COMP_MODE_HIGHSPEED;
}
/*!
* @brief Enable the COMP peripheral.
*
* @param compSelect: the selected comparator.
* This parameter can be one of the following values:
* @arg COMP_SELECT_COMP1: COMP1 selected
* @arg COMP_SELECT_COMP2: COMP2 selected
*
* @retval None
*
* @note If the selected comparator is locked, enable can't be performed.
* To unlock the configuration, perform a system reset.
*/
void COMP_Enable(COMP_SELECT_T compSelect)
{
if (compSelect == COMP_SELECT_COMP1)
{
COMP->CSTS_B.EN1 = SET;
}
else
{
COMP->CSTS_B.EN2 = SET;
}
}
/*!
* @brief Disable the COMP peripheral.
*
* @param compSelect: the selected comparator.
* This parameter can be one of the following values:
* @arg COMP_SELECT_COMP1: COMP1 selected
* @arg COMP_SELECT_COMP2: COMP2 selected
*
* @retval None
*
* @note If the selected comparator is locked, disable can't be performed.
* To unlock the configuration, perform a system reset.
*/
void COMP_Disable(COMP_SELECT_T compSelect)
{
if (compSelect == COMP_SELECT_COMP1)
{
COMP->CSTS_B.EN1 = RESET;
}
else
{
COMP->CSTS_B.EN2 = RESET;
}
}
/*!
* @brief Close the SW1 switch.
*
* @param None
*
* @retval None
*
* @note This switch is solely intended to redirect signals onto high
* impedance input, such as COMP1 non-inverting input (highly resistive switch)
*/
void COMP_EnableSwitch(void)
{
COMP->CSTS_B.SW1 = SET;
}
/*!
* @brief Open the SW1 switch.
*
* @param None
*
* @retval None
*/
void COMP_DisableSwitch(void)
{
COMP->CSTS_B.SW1 = RESET;
}
/*!
* @brief Return the output level (high or low) of the selected comparator.
*
* @param compSelect: the selected comparator.
* This parameter can be one of the following values:
* @arg COMP_SELECT_COMP1: COMP1 selected
* @arg COMP_SELECT_COMP2: COMP2 selected
*
* @retval Returns the selected comparator output level: low or high.
*/
uint32_t COMP_ReadOutPutLevel(COMP_SELECT_T compSelect)
{
uint32_t compOUT = 0x00;
if (compSelect == COMP_SELECT_COMP1)
{
if ((COMP->CSTS & COMP_CSTS_COMP1OUT) != 0)
{
compOUT = COMP_OUTPUTLEVEL_HIGH;
}
else
compOUT = COMP_OUTPUTLEVEL_LOW;
}
else
{
if ((COMP->CSTS & COMP_CSTS_COMP2OUT) != 0)
{
compOUT = COMP_OUTPUTLEVEL_HIGH;
}
else
compOUT = COMP_OUTPUTLEVEL_LOW;
}
return (uint32_t)(compOUT);
}
/*!
* @brief Enablesthe window mode.
*
* @param None
*
* @retval None
*/
void COMP_EnableWindow(void)
{
COMP->CSTS_B.WMODEN = SET;
}
/*!
* @brief Disables the window mode.
*
* @param None
*
* @retval None
*/
void COMP_DisnableWindow(void)
{
COMP->CSTS_B.WMODEN = RESET;
}
/*!
* @brief Lock the selected comparator configuration.
*
* @param compSelect: selects the comparator to be locked
* This parameter can be one of the following values:
* @arg COMP_SELECT_COMP1: COMP1 configuration is locked.
* @arg COMP_SELECT_COMP2: COMP2 configuration is locked.
*
* @retval None
*/
void COMP_ConfigLOCK(COMP_SELECT_T compSelect)
{
if (compSelect == COMP_SELECT_COMP1)
{
COMP->CSTS_B.LOCK1 = SET;
}
else
{
COMP->CSTS_B.LOCK2 = SET;
}
}
/**@} end of group COMP_Functions */
/**@} end of group COMP_Driver */
/**@} end of group APM32F0xx_StdPeriphDriver */
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