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sdk/GD32E23x_standard_peripheral/Src/gd32e23x_cmp.c Normal file
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/*!
\file gd32f23x_cmp.c
\brief CMP driver
\version 2024-02-22, V2.1.0, firmware for GD32E23x
*/
/*
Copyright (c) 2022, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include "gd32e23x_cmp.h"
/*!
\brief CMP deinit
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[out] none
\retval none
*/
void cmp_deinit(cmp_enum cmp_periph)
{
if(CMP0 == cmp_periph){
CMP_CS &= ((uint32_t)0xFFFF0000U);
}else{
}
}
/*!
\brief CMP mode init
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[in] operating_mode
\arg CMP_MODE_HIGHSPEED: high speed mode
\arg CMP_MODE_MIDDLESPEED: medium speed mode
\arg CMP_MODE_LOWSPEED: low speed mode
\arg CMP_MODE_VERYLOWSPEED: very-low speed mode
\param[in] inverting_input
\arg CMP_INVERTING_INPUT_1_4VREFINT: VREFINT *1/4 input
\arg CMP_INVERTING_INPUT_1_2VREFINT: VREFINT *1/2 input
\arg CMP_INVERTING_INPUT_3_4VREFINT: VREFINT *3/4 input
\arg CMP_INVERTING_INPUT_VREFINT: VREFINT input
\arg CMP_INVERTING_INPUT_PA4: PA4 input
\arg CMP_INVERTING_INPUT_PA5: PA5 input
\arg CMP_INVERTING_INPUT_PA0_PA2: PA0 for CMP0 or PA2 for CMP1 as inverting input
\param[in] output_hysteresis
\arg CMP_HYSTERESIS_NO: output no hysteresis
\arg CMP_HYSTERESIS_LOW: output low hysteresis
\arg CMP_HYSTERESIS_MIDDLE: output middle hysteresis
\arg CMP_HYSTERESIS_HIGH: output high hysteresis
\param[out] none
\retval none
*/
void cmp_mode_init(cmp_enum cmp_periph, uint32_t operating_mode, uint32_t inverting_input, uint32_t output_hysteresis)
{
uint32_t temp = 0U;
if(CMP0 == cmp_periph){
/* initialize comparator 0 mode */
temp = CMP_CS;
temp &= ~(uint32_t)(CMP_CS_CMP0M | CMP_CS_CMP0MSEL | CMP_CS_CMP0HST);
temp |= (uint32_t)(operating_mode | inverting_input | output_hysteresis);
CMP_CS = temp;
}else{
}
}
/*!
\brief CMP output init
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[in] output_selection
\arg CMP_OUTPUT_NONE: CMP output none
\arg CMP_OUTPUT_TIMER0_BKIN: CMP output TIMER0 break input
\arg CMP_OUTPUT_TIMER0_IC0: CMP output TIMER0_CH0 input capture
\arg CMP_OUTPUT_TIMER0_OCPRECLR: CMP output TIMER0 OCPRE_CLR input
\arg CMP_OUTPUT_TIMER2_IC0: CMP output TIMER2_CH0 input capture
\arg CMP_OUTPUT_TIMER2_OCPRECLR: CMP output TIMER2 OCPRE_CLR input
\param[in] output_polarity
\arg CMP_OUTPUT_POLARITY_INVERTED: output is inverted
\arg CMP_OUTPUT_POLARITY_NONINVERTED: output is not inverted
\param[out] none
\retval none
*/
void cmp_output_init(cmp_enum cmp_periph, uint32_t output_selection, uint32_t output_polarity)
{
uint32_t temp = 0U;
if(CMP0 == cmp_periph){
/* initialize comparator 0 output */
temp = CMP_CS;
temp &= ~(uint32_t)CMP_CS_CMP0OSEL;
temp |= (uint32_t)output_selection;
/* output polarity */
if(CMP_OUTPUT_POLARITY_INVERTED == output_polarity){
temp |= (uint32_t)CMP_CS_CMP0PL;
}else{
temp &= ~(uint32_t)CMP_CS_CMP0PL;
}
CMP_CS = temp;
}else{
}
}
/*!
\brief enable CMP
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[out] none
\retval none
*/
void cmp_enable(cmp_enum cmp_periph)
{
if(CMP0 == cmp_periph){
CMP_CS |= (uint32_t)CMP_CS_CMP0EN;
}else{
}
}
/*!
\brief disable CMP
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[out] none
\retval none
*/
void cmp_disable(cmp_enum cmp_periph)
{
if(CMP0 == cmp_periph){
CMP_CS &= ~(uint32_t)CMP_CS_CMP0EN;
}else{
}
}
/*!
\brief enable CMP switch
\param[in] none
\param[out] none
\retval none
*/
void cmp_switch_enable(void)
{
CMP_CS |= (uint32_t)CMP_CS_CMP0SW;
}
/*!
\brief disable CMP switch
\param[in] none
\param[out] none
\retval none
*/
void cmp_switch_disable(void)
{
CMP_CS &= ~(uint32_t)CMP_CS_CMP0SW;
}
/*!
\brief lock the CMP
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[out] none
\retval none
*/
void cmp_lock_enable(cmp_enum cmp_periph)
{
if(CMP0 == cmp_periph){
/* lock CMP0 */
CMP_CS |= (uint32_t)CMP_CS_CMP0LK;
}else{
}
}
/*!
\brief get output level
\param[in] cmp_periph
\arg CMP0: comparator 0
\param[out] none
\retval the output level
*/
uint32_t cmp_output_level_get(cmp_enum cmp_periph)
{
/* get output level of CMP0 */
if((uint32_t)RESET != (CMP_CS & CMP_CS_CMP0O)) {
return CMP_OUTPUTLEVEL_HIGH;
}else{
return CMP_OUTPUTLEVEL_LOW;
}
}