256 lines
7.6 KiB
C
256 lines
7.6 KiB
C
|
/*!
|
||
|
|
\file gd32f3x0_cmp.c
|
||
|
|
\brief CMP driver
|
||
|
|
|
||
|
|
\version 2017-06-06, V1.0.0, firmware for GD32F3x0
|
||
|
|
\version 2019-06-01, V2.0.0, firmware for GD32F3x0
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright (c) 2019, 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 "gd32f3x0_cmp.h"
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief deinitialize comparator
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_deinit(void)
|
||
|
|
{
|
||
|
|
CMP_CS = ((uint32_t)0x00000000U);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief initialize comparator mode
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[in] operating_mode
|
||
|
|
\arg CMP_HIGHSPEED: high speed mode
|
||
|
|
\arg CMP_MIDDLESPEED: medium speed mode
|
||
|
|
\arg CMP_LOWSPEED: low speed mode
|
||
|
|
\arg CMP_VERYLOWSPEED: very-low speed mode
|
||
|
|
\param[in] inverting_input
|
||
|
|
\arg CMP_1_4VREFINT: VREFINT *1/4 input
|
||
|
|
\arg CMP_1_2VREFINT: VREFINT *1/2 input
|
||
|
|
\arg CMP_3_4VREFINT: VREFINT *3/4 input
|
||
|
|
\arg CMP_VREFINT: VREFINT input
|
||
|
|
\arg CMP_DAC: PA4 (DAC) input
|
||
|
|
\arg CMP_PA5: PA5 input
|
||
|
|
\arg CMP_PA_0_2: PA0 or PA2 input
|
||
|
|
\param[in] 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(uint32_t cmp_periph, operating_mode_enum operating_mode, inverting_input_enum inverting_input, cmp_hysteresis_enum output_hysteresis)
|
||
|
|
{
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
/* initialize comparator 0 mode */
|
||
|
|
CMP_CS &= ~(uint32_t)(CMP_CS_CMP0M | CMP_CS_CMP0MSEL | CMP_CS_CMP0HST );
|
||
|
|
CMP_CS |= CS_CMP0M(operating_mode) | CS_CMP0MSEL(inverting_input) | CS_CMP0HST(output_hysteresis);
|
||
|
|
}else{
|
||
|
|
/* initialize comparator 1 mode */
|
||
|
|
CMP_CS &= ~(uint32_t)(CMP_CS_CMP1M | CMP_CS_CMP1MSEL | CMP_CS_CMP1HST );
|
||
|
|
CMP_CS |= CS_CMP1M(operating_mode) | CS_CMP1MSEL(inverting_input) | CS_CMP1HST(output_hysteresis);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief initialize comparator output
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[in] output_slection
|
||
|
|
\arg CMP_OUTPUT_NONE: output no selection
|
||
|
|
\arg CMP_OUTPUT_TIMER0BKIN: TIMER 0 break input
|
||
|
|
\arg CMP_OUTPUT_TIMER0IC0: TIMER 0 channel0 input capture
|
||
|
|
\arg CMP_OUTPUT_TIMER0OCPRECLR: TIMER 0 OCPRE_CLR input
|
||
|
|
\arg CMP_OUTPUT_TIMER1IC3: TIMER 1 channel3 input capture
|
||
|
|
\arg CMP_OUTPUT_TIMER1OCPRECLR: TIMER 1 OCPRE_CLR input
|
||
|
|
\arg CMP_OUTPUT_TIMER2IC0: TIMER 2 channel0 input capture
|
||
|
|
\arg CMP_OUTPUT_TIMER2OCPRECLR: TIMER 2 OCPRE_CLR input
|
||
|
|
\param[in] output_polarity
|
||
|
|
\arg CMP_OUTPUT_POLARITY_INVERTED: output is inverted
|
||
|
|
\arg CMP_OUTPUT_POLARITY_NOINVERTED: output is not inverted
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_output_init(uint32_t cmp_periph, cmp_output_enum output_slection, uint32_t output_polarity)
|
||
|
|
{
|
||
|
|
/* initialize comparator 0 output */
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
CMP_CS &= ~(uint32_t)CMP_CS_CMP0OSEL;
|
||
|
|
CMP_CS |= CS_CMP0OSEL(output_slection);
|
||
|
|
/* output polarity */
|
||
|
|
if(CMP_OUTPUT_POLARITY_INVERTED == output_polarity){
|
||
|
|
CMP_CS |= CMP_CS_CMP0PL;
|
||
|
|
}else{
|
||
|
|
CMP_CS &= ~CMP_CS_CMP0PL;
|
||
|
|
}
|
||
|
|
}else{
|
||
|
|
/* initialize comparator 1 output */
|
||
|
|
CMP_CS &= ~(uint32_t)CMP_CS_CMP1OSEL;
|
||
|
|
CMP_CS |= CS_CMP1OSEL(output_slection);
|
||
|
|
/* output polarity */
|
||
|
|
if(CMP_OUTPUT_POLARITY_INVERTED == output_polarity){
|
||
|
|
CMP_CS |= CMP_CS_CMP1PL;
|
||
|
|
}else{
|
||
|
|
CMP_CS &= ~CMP_CS_CMP1PL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief enable comparator
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_enable(uint32_t cmp_periph)
|
||
|
|
{
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
CMP_CS |= CMP_CS_CMP0EN;
|
||
|
|
}else{
|
||
|
|
CMP_CS |= CMP_CS_CMP1EN;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief disable comparator
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_disable(uint32_t cmp_periph)
|
||
|
|
{
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
CMP_CS &= ~CMP_CS_CMP0EN;
|
||
|
|
}else{
|
||
|
|
CMP_CS &= ~CMP_CS_CMP1EN;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief enable comparator switch
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_switch_enable(void)
|
||
|
|
{
|
||
|
|
CMP_CS |= CMP_CS_CMP0SW;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief disable comparator switch
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_switch_disable(void)
|
||
|
|
{
|
||
|
|
CMP_CS &= ~CMP_CS_CMP0SW;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief enable the window mode
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_window_enable(void)
|
||
|
|
{
|
||
|
|
CMP_CS |= CMP_CS_WNDEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief disable the window mode
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_window_disable(void)
|
||
|
|
{
|
||
|
|
CMP_CS &= ~CMP_CS_WNDEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief lock the comparator
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void cmp_lock_enable(uint32_t cmp_periph)
|
||
|
|
{
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
/* lock CMP0 */
|
||
|
|
CMP_CS |= CMP_CS_CMP0LK;
|
||
|
|
}else{
|
||
|
|
/* lock CMP1 */
|
||
|
|
CMP_CS |= CMP_CS_CMP1LK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief get output level
|
||
|
|
\param[in] cmp_periph
|
||
|
|
\arg CMP0: comparator 0
|
||
|
|
\arg CMP1: comparator 1
|
||
|
|
\param[out] none
|
||
|
|
\retval the output level
|
||
|
|
*/
|
||
|
|
uint32_t cmp_output_level_get(uint32_t cmp_periph)
|
||
|
|
{
|
||
|
|
if(CMP0 == cmp_periph){
|
||
|
|
/* get output level of CMP0 */
|
||
|
|
if(CMP_CS & CMP_CS_CMP0O){
|
||
|
|
return CMP_OUTPUTLEVEL_HIGH;
|
||
|
|
}else{
|
||
|
|
return CMP_OUTPUTLEVEL_LOW;
|
||
|
|
}
|
||
|
|
}else{
|
||
|
|
/* get output level of CMP1 */
|
||
|
|
if(CMP_CS & CMP_CS_CMP1O){
|
||
|
|
return CMP_OUTPUTLEVEL_HIGH;
|
||
|
|
}else{
|
||
|
|
return CMP_OUTPUTLEVEL_LOW;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|