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rt-thread-official/bsp/gd32e230k-start/Libraries/GD32E230_standard_peripheral/Source/gd32e230_adc.c

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[bsp][gd32e230k-start] Add GD32E230K-START BSP port
2019-03-31 15:44:24 +08:00
/*!
\file gd32e230_adc.c
\brief ADC driver
\version 2018-06-19, V1.0.0, firmware for GD32E230
*/
/*
Copyright (c) 2018, GigaDevice Semiconductor Inc.
All rights reserved.
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 "gd32e230_adc.h"
/*!
\brief reset ADC
\param[in] none
\param[out] none
\retval none
*/
void adc_deinit(void)
{
rcu_periph_reset_enable(RCU_ADCRST);
rcu_periph_reset_disable(RCU_ADCRST);
}
/*!
\brief enable ADC interface
\param[in] none
\param[out] none
\retval none
*/
void adc_enable(void)
{
if(RESET == (ADC_CTL1 & ADC_CTL1_ADCON)){
ADC_CTL1 |= (uint32_t)ADC_CTL1_ADCON;
}
}
/*!
\brief disable ADC interface
\param[in] none
\param[out] none
\retval none
*/
void adc_disable(void)
{
ADC_CTL1 &= ~((uint32_t)ADC_CTL1_ADCON);
}
/*!
\brief ADC calibration and reset calibration
\param[in] none
\param[out] none
\retval none
*/
void adc_calibration_enable(void)
{
/* reset the selected ADC calibration register */
ADC_CTL1 |= (uint32_t) ADC_CTL1_RSTCLB;
/* check the RSTCLB bit state */
while((ADC_CTL1 & ADC_CTL1_RSTCLB)){
}
/* enable ADC calibration process */
ADC_CTL1 |= ADC_CTL1_CLB;
/* check the CLB bit state */
while((ADC_CTL1 & ADC_CTL1_CLB)){
}
}
/*!
\brief enable DMA request
\param[in] none
\param[out] none
\retval none
*/
void adc_dma_mode_enable(void)
{
ADC_CTL1 |= (uint32_t)(ADC_CTL1_DMA);
}
/*!
\brief disable DMA request
\param[in] none
\param[out] none
\retval none
*/
void adc_dma_mode_disable(void)
{
ADC_CTL1 &= ~((uint32_t)ADC_CTL1_DMA);
}
/*!
\brief enable the temperature sensor and Vrefint channel
\param[in] none
\param[out] none
\retval none
*/
void adc_tempsensor_vrefint_enable(void)
{
/* enable the temperature sensor and Vrefint channel */
ADC_CTL1 |= ADC_CTL1_TSVREN;
}
/*!
\brief disable the temperature sensor and Vrefint channel
\param[in] none
\param[out] none
\retval none
*/
void adc_tempsensor_vrefint_disable(void)
{
/* disable the temperature sensor and Vrefint channel */
ADC_CTL1 &= ~ADC_CTL1_TSVREN;
}
/*!
\brief configure ADC discontinuous mode
\param[in] channel_group: select the channel group
only one parameter can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\arg ADC_CHANNEL_DISCON_DISABLE: disable discontinuous mode of regular and inserted channel
\param[in] length: number of conversions in discontinuous mode, the number can be 1..8
for regular channel, the number has no effect for inserted channel
\param[out] none
\retval none
*/
void adc_discontinuous_mode_config(uint8_t channel_group, uint8_t length)
{
ADC_CTL0 &= ~((uint32_t)(ADC_CTL0_DISRC | ADC_CTL0_DISIC));
switch(channel_group){
case ADC_REGULAR_CHANNEL:
/* configure the number of conversions in discontinuous mode */
ADC_CTL0 &= ~((uint32_t)ADC_CTL0_DISNUM);
ADC_CTL0 |= CTL0_DISNUM(((uint32_t)length - 1U));
ADC_CTL0 |= (uint32_t)ADC_CTL0_DISRC;
break;
case ADC_INSERTED_CHANNEL:
ADC_CTL0 |= (uint32_t)ADC_CTL0_DISIC;
break;
case ADC_CHANNEL_DISCON_DISABLE:
default:
break;
}
}
/*!
\brief configure ADC special function
\param[in] function: the function to configure
one or more parameters can be selected which is shown as below:
\arg ADC_SCAN_MODE: scan mode select
\arg ADC_INSERTED_CHANNEL_AUTO: inserted channel group convert automatically
\arg ADC_CONTINUOUS_MODE: continuous mode select
\param[in] newvalue: ENABLE or DISABLE
\param[out] none
\retval none
*/
void adc_special_function_config(uint32_t function, ControlStatus newvalue)
{
if(newvalue){
/* enable ADC scan mode */
if(RESET != (function & ADC_SCAN_MODE)){
ADC_CTL0 |= ADC_SCAN_MODE;
}
/* enable ADC inserted channel group convert automatically */
if(RESET != (function & ADC_INSERTED_CHANNEL_AUTO)){
ADC_CTL0 |= ADC_INSERTED_CHANNEL_AUTO;
}
/* enable ADC continuous mode */
if(RESET != (function & ADC_CONTINUOUS_MODE)){
ADC_CTL1 |= ADC_CONTINUOUS_MODE;
}
}else{
/* disable ADC scan mode */
if(RESET != (function & ADC_SCAN_MODE)){
ADC_CTL0 &= ~ADC_SCAN_MODE;
}
/* disable ADC inserted channel group convert automatically */
if(RESET != (function & ADC_INSERTED_CHANNEL_AUTO)){
ADC_CTL0 &= ~ADC_INSERTED_CHANNEL_AUTO;
}
/* disable ADC continuous mode */
if(RESET != (function & ADC_CONTINUOUS_MODE)){
ADC_CTL1 &= ~ADC_CONTINUOUS_MODE;
}
}
}
/*!
\brief configure ADC data alignment
\param[in] data_alignment: data alignment select
only one parameter can be selected which is shown as below:
\arg ADC_DATAALIGN_RIGHT: right alignment
\arg ADC_DATAALIGN_LEFT: left alignment
\param[out] none
\retval none
*/
void adc_data_alignment_config(uint32_t data_alignment)
{
if(ADC_DATAALIGN_RIGHT != data_alignment){
ADC_CTL1 |= ADC_CTL1_DAL;
}else{
ADC_CTL1 &= ~((uint32_t)ADC_CTL1_DAL);
}
}
/*!
\brief configure the length of regular channel group or inserted channel group
\param[in] channel_group: select the channel group
only one parameter can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\param[in] length: the length of the channel
regular channel 1-16
inserted channel 1-4
\param[out] none
\retval none
*/
void adc_channel_length_config(uint8_t channel_group, uint32_t length)
{
switch(channel_group){
case ADC_REGULAR_CHANNEL:
/* configure the length of regular channel group */
ADC_RSQ0 &= ~((uint32_t)ADC_RSQ0_RL);
ADC_RSQ0 |= RSQ0_RL((uint32_t)(length-1U));
break;
case ADC_INSERTED_CHANNEL:
/* configure the length of inserted channel group */
ADC_ISQ &= ~((uint32_t)ADC_ISQ_IL);
ADC_ISQ |= ISQ_IL((uint32_t)(length-1U));
break;
default:
break;
}
}
/*!
\brief configure ADC regular channel
\param[in] rank: the regular group sequence rank, this parameter must be between 0 to 15
\param[in] channel: the selected ADC channel
only one parameter can be selected which is shown as below:
\arg ADC_CHANNEL_x(x=0..9,16,17): ADC Channelx
\param[in] sample_time: the sample time value
only one parameter can be selected which is shown as below:
\arg ADC_SAMPLETIME_1POINT5: 1.5 cycles
\arg ADC_SAMPLETIME_7POINT5: 7.5 cycles
\arg ADC_SAMPLETIME_13POINT5: 13.5 cycles
\arg ADC_SAMPLETIME_28POINT5: 28.5 cycles
\arg ADC_SAMPLETIME_41POINT5: 41.5 cycles
\arg ADC_SAMPLETIME_55POINT5: 55.5 cycles
\arg ADC_SAMPLETIME_71POINT5: 71.5 cycles
\arg ADC_SAMPLETIME_239POINT5: 239.5 cycles
\param[out] none
\retval none
*/
void adc_regular_channel_config(uint8_t rank, uint8_t channel, uint32_t sample_time)
{
uint32_t rsq,sampt;
/* configure ADC regular sequence */
if(rank < 6U){
rsq = ADC_RSQ2;
rsq &= ~((uint32_t)(ADC_RSQX_RSQN << (5U*rank)));
rsq |= ((uint32_t)channel << (5U*rank));
ADC_RSQ2 = rsq;
}else if(rank < 12U){
rsq = ADC_RSQ1;
rsq &= ~((uint32_t)(ADC_RSQX_RSQN << (5U*(rank-6U))));
rsq |= ((uint32_t)channel << (5U*(rank-6U)));
ADC_RSQ1 = rsq;
}else if(rank < 16U){
rsq = ADC_RSQ0;
rsq &= ~((uint32_t)(ADC_RSQX_RSQN << (5U*(rank-12U))));
rsq |= ((uint32_t)channel << (5U*(rank-12U)));
ADC_RSQ0 = rsq;
}else{
}
/* configure ADC sampling time */
if(channel < 10U){
sampt = ADC_SAMPT1;
sampt &= ~((uint32_t)(ADC_SAMPTX_SPTN << (3U*channel)));
sampt |= (uint32_t)(sample_time << (3U*channel));
ADC_SAMPT1 = sampt;
}else if(channel < 19U){
sampt = ADC_SAMPT0;
sampt &= ~((uint32_t)(ADC_SAMPTX_SPTN << (3U*(channel-10U))));
sampt |= (uint32_t)(sample_time << (3U*(channel-10U)));
ADC_SAMPT0 = sampt;
}else{
/* illegal parameters */
}
}
/*!
\brief configure ADC inserted channel
\param[in] rank: the inserted group sequencer rank,this parameter must be between 0 to 3
\param[in] channel: the selected ADC channel
only one parameter can be selected which is shown as below:
\arg ADC_CHANNEL_x(x=0..9,16,17): ADC Channelx
\param[in] sample_time: The sample time value
only one parameter can be selected which is shown as below:
\arg ADC_SAMPLETIME_1POINT5: 1.5 cycles
\arg ADC_SAMPLETIME_7POINT5: 7.5 cycles
\arg ADC_SAMPLETIME_13POINT5: 13.5 cycles
\arg ADC_SAMPLETIME_28POINT5: 28.5 cycles
\arg ADC_SAMPLETIME_41POINT5: 41.5 cycles
\arg ADC_SAMPLETIME_55POINT5: 55.5 cycles
\arg ADC_SAMPLETIME_71POINT5: 71.5 cycles
\arg ADC_SAMPLETIME_239POINT5: 239.5 cycles
\param[out] none
\retval none
*/
void adc_inserted_channel_config(uint8_t rank, uint8_t channel, uint32_t sample_time)
{
uint8_t inserted_length;
uint32_t isq,sampt;
inserted_length = (uint8_t)GET_BITS(ADC_ISQ , 20U , 21U);
isq = ADC_ISQ;
isq &= ~((uint32_t)(ADC_ISQ_ISQN << (15U - (inserted_length - rank)*5U)));
isq |= ((uint32_t)channel << (15U - (inserted_length - rank)*5U));
ADC_ISQ = isq;
/* configure ADC sampling time */
if(channel < 10U){
sampt = ADC_SAMPT1;
sampt &= ~((uint32_t)(ADC_SAMPTX_SPTN << (3U*channel)));
sampt |= (uint32_t) sample_time << (3U*channel);
ADC_SAMPT1 = sampt;
}else if(channel < 19U){
sampt = ADC_SAMPT0;
sampt &= ~((uint32_t)(ADC_SAMPTX_SPTN << (3U*(channel - 10U))));
sampt |= ((uint32_t)sample_time << (3U*(channel - 10U)));
ADC_SAMPT0 = sampt;
}else{
/* illegal parameters */
}
}
/*!
\brief configure ADC inserted channel offset
\param[in] inserted_channel: insert channel select
only one parameter can be selected which is shown as below:
\arg ADC_INSERTED_CHANNEL_0: ADC inserted channel 0
\arg ADC_INSERTED_CHANNEL_1: ADC inserted channel 1
\arg ADC_INSERTED_CHANNEL_2: ADC inserted channel 2
\arg ADC_INSERTED_CHANNEL_3: ADC inserted channel 3
\param[in] offset: the offset data
\param[out] none
\retval none
*/
void adc_inserted_channel_offset_config(uint8_t inserted_channel, uint16_t offset)
{
uint8_t inserted_length;
uint32_t num = 0U;
inserted_length = (uint8_t)GET_BITS(ADC_ISQ, 20U, 21U);
num = 3U - (inserted_length - inserted_channel);
if(num <= 3U){
/* calculate the offset of the register */
num = num * 4U;
/* configure the offset of the selected channels */
REG32((ADC) + 0x14U + num) = IOFFX_IOFF((uint32_t)offset);
}
}
/*!
\brief enable or disable ADC external trigger
\param[in] channel_group: select the channel group
one or more parameters can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\param[in] newvalue: ENABLE or DISABLE
\param[out] none
\retval none
*/
void adc_external_trigger_config(uint8_t channel_group, ControlStatus newvalue)
{
if(newvalue){
/* external trigger enable for regular channel */
if(RESET != (channel_group & ADC_REGULAR_CHANNEL)){
ADC_CTL1 |= ADC_CTL1_ETERC;
}
/* external trigger enable for inserted channel */
if(RESET != (channel_group & ADC_INSERTED_CHANNEL)){
ADC_CTL1 |= ADC_CTL1_ETEIC;
}
}else{
/* external trigger disable for regular channel */
if(RESET != (channel_group & ADC_REGULAR_CHANNEL)){
ADC_CTL1 &= ~ADC_CTL1_ETERC;
}
/* external trigger disable for inserted channel */
if(RESET != (channel_group & ADC_INSERTED_CHANNEL)){
ADC_CTL1 &= ~ADC_CTL1_ETEIC;
}
}
}
/*!
\brief configure ADC external trigger source
\param[in] channel_group: select the channel group
only one parameter can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\param[in] external_trigger_source: regular or inserted group trigger source
only one parameter can be selected which is shown as below:
for regular channel:
\arg ADC_EXTTRIG_REGULAR_T0_CH0: TIMER0 CH0 event select
\arg ADC_EXTTRIG_REGULAR_T0_CH1: TIMER0 CH1 event select
\arg ADC_EXTTRIG_REGULAR_T0_CH2: TIMER0 CH2 event select
\arg ADC_EXTTRIG_REGULAR_T2_TRGO: TIMER2 TRGO event select
\arg ADC_EXTTRIG_REGULAR_T14_CH0: TIMER14 CH0 event select
\arg ADC_EXTTRIG_REGULAR_EXTI_11: external interrupt line 11
\arg ADC_EXTTRIG_REGULAR_NONE: software trigger
for inserted channel:
\arg ADC_EXTTRIG_INSERTED_T0_TRGO: TIMER0 TRGO event select
\arg ADC_EXTTRIG_INSERTED_T0_CH3: TIMER0 CH3 event select
\arg ADC_EXTTRIG_INSERTED_T2_CH3: TIMER2 CH3 event select
\arg ADC_EXTTRIG_INSERTED_T14_TRGO: TIMER14 TRGO event select
\arg ADC_EXTTRIG_INSERTED_EXTI_15: external interrupt line 15
\arg ADC_EXTTRIG_INSERTED_NONE: software trigger
\param[out] none
\retval none
*/
void adc_external_trigger_source_config(uint8_t channel_group, uint32_t external_trigger_source)
{
switch(channel_group){
case ADC_REGULAR_CHANNEL:
/* external trigger select for regular channel */
ADC_CTL1 &= ~((uint32_t)ADC_CTL1_ETSRC);
ADC_CTL1 |= (uint32_t)external_trigger_source;
break;
case ADC_INSERTED_CHANNEL:
/* external trigger select for inserted channel */
ADC_CTL1 &= ~((uint32_t)ADC_CTL1_ETSIC);
ADC_CTL1 |= (uint32_t)external_trigger_source;
break;
default:
break;
}
}
/*!
\brief enable ADC software trigger
\param[in] channel_group: select the channel group
one or more parameters can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\param[out] none
\retval none
*/
void adc_software_trigger_enable(uint8_t channel_group)
{
/* enable regular group channel software trigger */
if(RESET != (channel_group & ADC_REGULAR_CHANNEL)){
ADC_CTL1 |= ADC_CTL1_SWRCST;
}
/* enable inserted channel group software trigger */
if(RESET != (channel_group & ADC_INSERTED_CHANNEL)){
ADC_CTL1 |= ADC_CTL1_SWICST;
}
}
/*!
\brief read ADC regular group data register
\param[in] none
\param[out] none
\retval the conversion value
*/
uint16_t adc_regular_data_read(void)
{
return ((uint16_t)ADC_RDATA);
}
/*!
\brief read ADC inserted group data register
\param[in] inserted_channel: inserted channel select
only one parameter can be selected which is shown as below:
\arg ADC_INSERTED_CHANNEL_0: ADC inserted channel 0
\arg ADC_INSERTED_CHANNEL_1: ADC inserted channel 1
\arg ADC_INSERTED_CHANNEL_2: ADC inserted channel 2
\arg ADC_INSERTED_CHANNEL_3: ADC inserted channel 3
\param[out] none
\retval the conversion value
*/
uint16_t adc_inserted_data_read(uint8_t inserted_channel)
{
uint32_t idata;
/* read the data of the selected channel */
switch(inserted_channel){
case ADC_INSERTED_CHANNEL_0:
idata = ADC_IDATA0;
break;
case ADC_INSERTED_CHANNEL_1:
idata = ADC_IDATA1;
break;
case ADC_INSERTED_CHANNEL_2:
idata = ADC_IDATA2;
break;
case ADC_INSERTED_CHANNEL_3:
idata = ADC_IDATA3;
break;
default:
idata = 0U;
break;
}
return (uint16_t)idata;
}
/*!
\brief get the ADC flag bits
\param[in] flag: the adc flag bits
only one parameter can be selected which is shown as below:
\arg ADC_FLAG_WDE: analog watchdog event flag
\arg ADC_FLAG_EOC: end of group conversion flag
\arg ADC_FLAG_EOIC: end of inserted group conversion flag
\arg ADC_FLAG_STIC: start flag of inserted channel group
\arg ADC_FLAG_STRC: start flag of regular channel group
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus adc_flag_get(uint32_t flag)
{
FlagStatus reval = RESET;
if(ADC_STAT & flag){
reval = SET;
}
return reval;
}
/*!
\brief clear the ADC flag
\param[in] flag: the adc flag
one or more parameters can be selected which is shown as below:
\arg ADC_FLAG_WDE: analog watchdog event flag
\arg ADC_FLAG_EOC: end of group conversion flag
\arg ADC_FLAG_EOIC: end of inserted group conversion flag
\arg ADC_FLAG_STIC: start flag of inserted channel group
\arg ADC_FLAG_STRC: start flag of regular channel group
\param[out] none
\retval none
*/
void adc_flag_clear(uint32_t flag)
{
ADC_STAT &= ~((uint32_t)flag);
}
/*!
\brief get the ADC interrupt flag
\param[in] flag: the adc interrupt flag
only one parameter can be selected which is shown as below:
\arg ADC_INT_FLAG_WDE: analog watchdog interrupt flag
\arg ADC_INT_FLAG_EOC: end of group conversion interrupt flag
\arg ADC_INT_FLAG_EOIC: end of inserted group conversion interrupt flag
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus adc_interrupt_flag_get(uint32_t flag)
{
FlagStatus interrupt_flag = RESET;
uint32_t state;
/* check the interrupt bits */
switch(flag){
case ADC_INT_FLAG_WDE:
state = ADC_STAT & ADC_STAT_WDE;
if((ADC_CTL0 & ADC_CTL0_WDEIE) && state){
interrupt_flag = SET;
}
break;
case ADC_INT_FLAG_EOC:
state = ADC_STAT & ADC_STAT_EOC;
if((ADC_CTL0 & ADC_CTL0_EOCIE) && state){
interrupt_flag = SET;
}
break;
case ADC_INT_FLAG_EOIC:
state = ADC_STAT & ADC_STAT_EOIC;
if((ADC_CTL0 & ADC_CTL0_EOICIE) && state){
interrupt_flag = SET;
}
break;
default:
break;
}
return interrupt_flag;
}
/*!
\brief clear ADC interrupt flag
\param[in] flag: the adc interrupt flag
only one parameter can be selected which is shown as below:
\arg ADC_INT_FLAG_WDE: analog watchdog interrupt flag
\arg ADC_INT_FLAG_EOC: end of group conversion interrupt flag
\arg ADC_INT_FLAG_EOIC: end of inserted group conversion interrupt flag
\param[out] none
\retval none
*/
void adc_interrupt_flag_clear(uint32_t flag)
{
ADC_STAT &= ~((uint32_t)flag);
}
/*!
\brief enable ADC interrupt
\param[in] interrupt: the adc interrupt
one or more parameters can be selected which is shown as below:
\arg ADC_INT_WDE: analog watchdog interrupt
\arg ADC_INT_EOC: end of group conversion interrupt
\arg ADC_INT_EOIC: end of inserted group conversion interrupt
\param[out] none
\retval none
*/
void adc_interrupt_enable(uint32_t interrupt)
{
/* enable analog watchdog interrupt */
if(RESET != (interrupt & ADC_INT_WDE)){
ADC_CTL0 |= (uint32_t)ADC_CTL0_WDEIE;
}
/* enable end of group conversion interrupt */
if(RESET != (interrupt & ADC_INT_EOC)){
ADC_CTL0 |= (uint32_t)ADC_CTL0_EOCIE;
}
/* enable end of inserted group conversion interrupt */
if(RESET != (interrupt & ADC_INT_EOIC)){
ADC_CTL0 |= (uint32_t)ADC_CTL0_EOICIE;
}
}
/*!
\brief disable ADC interrupt
\param[in] interrupt: the adc interrupt flag
one or more parameters can be selected which is shown as below:
\arg ADC_INT_WDE: analog watchdog interrupt
\arg ADC_INT_EOC: end of group conversion interrupt
\arg ADC_INT_EOIC: end of inserted group conversion interrupt
\param[out] none
\retval none
*/
void adc_interrupt_disable(uint32_t interrupt)
{
/* disable analog watchdog interrupt */
if(RESET != (interrupt & ADC_INT_WDE)){
ADC_CTL0 &= ~(uint32_t)ADC_CTL0_WDEIE;
}
/* disable end of group conversion interrupt */
if(RESET != (interrupt & ADC_INT_EOC)){
ADC_CTL0 &= ~(uint32_t)ADC_CTL0_EOCIE;
}
/* disable end of inserted group conversion interrupt */
if(RESET != (interrupt & ADC_INT_EOIC)){
ADC_CTL0 &= ~(uint32_t)ADC_CTL0_EOICIE;
}
}
/*!
\brief configure ADC analog watchdog single channel
\param[in] channel: the selected ADC channel
only one parameter can be selected which is shown as below:
\arg ADC_CHANNEL_x(x=0..9,16,17): ADC Channelx
\param[out] none
\retval none
*/
void adc_watchdog_single_channel_enable(uint8_t channel)
{
ADC_CTL0 &= (uint32_t)~(ADC_CTL0_RWDEN | ADC_CTL0_IWDEN | ADC_CTL0_WDSC | ADC_CTL0_WDCHSEL);
ADC_CTL0 |= (uint32_t)channel;
ADC_CTL0 |= (uint32_t)(ADC_CTL0_RWDEN | ADC_CTL0_IWDEN | ADC_CTL0_WDSC);
}
/*!
\brief configure ADC analog watchdog group channel
\param[in] channel_group: the channel group use analog watchdog
only one parameter can be selected which is shown as below:
\arg ADC_REGULAR_CHANNEL: regular channel group
\arg ADC_INSERTED_CHANNEL: inserted channel group
\arg ADC_REGULAR_INSERTED_CHANNEL: both regular and inserted group
\param[out] none
\retval none
*/
void adc_watchdog_group_channel_enable(uint8_t channel_group)
{
ADC_CTL0 &= (uint32_t)~(ADC_CTL0_RWDEN | ADC_CTL0_IWDEN | ADC_CTL0_WDSC);
/* select the group */
switch(channel_group){
case ADC_REGULAR_CHANNEL:
ADC_CTL0 |= (uint32_t)ADC_CTL0_RWDEN;
break;
case ADC_INSERTED_CHANNEL:
ADC_CTL0 |= (uint32_t)ADC_CTL0_IWDEN;
break;
case ADC_REGULAR_INSERTED_CHANNEL:
ADC_CTL0 |= (uint32_t)(ADC_CTL0_RWDEN | ADC_CTL0_IWDEN);
break;
default:
break;
}
}
/*!
\brief disable ADC analog watchdog
\param[in] none
\param[out] none
\retval none
*/
void adc_watchdog_disable(void)
{
ADC_CTL0 &= (uint32_t)~(ADC_CTL0_RWDEN | ADC_CTL0_IWDEN | ADC_CTL0_WDSC | ADC_CTL0_WDCHSEL);
}
/*!
\brief configure ADC analog watchdog threshold
\param[in] low_threshold: analog watchdog low threshold,0..4095
\param[in] high_threshold: analog watchdog high threshold,0..4095
\param[out] none
\retval none
*/
void adc_watchdog_threshold_config(uint16_t low_threshold, uint16_t high_threshold)
{
ADC_WDLT = (uint32_t)WDLT_WDLT(low_threshold);
ADC_WDHT = (uint32_t)WDHT_WDHT(high_threshold);
}
/*!
\brief configure ADC resolution
\param[in] resolution: ADC resolution
only one parameter can be selected which is shown as below:
\arg ADC_RESOLUTION_12B: 12-bit ADC resolution
\arg ADC_RESOLUTION_10B: 10-bit ADC resolution
\arg ADC_RESOLUTION_8B: 8-bit ADC resolution
\arg ADC_RESOLUTION_6B: 6-bit ADC resolution
\param[out] none
\retval none
*/
void adc_resolution_config(uint32_t resolution)
{
ADC_CTL0 &= ~((uint32_t)ADC_CTL0_DRES);
ADC_CTL0 |= (uint32_t)resolution;
}
/*!
\brief configure ADC oversample mode
\param[in] mode: ADC oversampling mode
only one parameter can be selected which is shown as below:
\arg ADC_OVERSAMPLING_ALL_CONVERT: all oversampled conversions for a channel are done consecutively after a trigger
\arg ADC_OVERSAMPLING_ONE_CONVERT: each oversampled conversion for a channel needs a trigger
\param[in] shift: ADC oversampling shift
only one parameter can be selected which is shown as below:
\arg ADC_OVERSAMPLING_SHIFT_NONE: no oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_1B: 1-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_2B: 2-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_3B: 3-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_4B: 3-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_5B: 5-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_6B: 6-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_7B: 7-bit oversampling shift
\arg ADC_OVERSAMPLING_SHIFT_8B: 8-bit oversampling shift
\param[in] ratio: ADC oversampling ratio
only one parameter can be selected which is shown as below:
\arg ADC_OVERSAMPLING_RATIO_MUL2: oversampling ratio multiple 2
\arg ADC_OVERSAMPLING_RATIO_MUL4: oversampling ratio multiple 4
\arg ADC_OVERSAMPLING_RATIO_MUL8: oversampling ratio multiple 8
\arg ADC_OVERSAMPLING_RATIO_MUL16: oversampling ratio multiple 16
\arg ADC_OVERSAMPLING_RATIO_MUL32: oversampling ratio multiple 32
\arg ADC_OVERSAMPLING_RATIO_MUL64: oversampling ratio multiple 64
\arg ADC_OVERSAMPLING_RATIO_MUL128: oversampling ratio multiple 128
\arg ADC_OVERSAMPLING_RATIO_MUL256: oversampling ratio multiple 256
\param[out] none
\retval none
*/
void adc_oversample_mode_config(uint8_t mode, uint16_t shift, uint8_t ratio)
{
/* configure ADC oversampling mode */
if(ADC_OVERSAMPLING_ONE_CONVERT == mode){
ADC_OVSAMPCTL |= (uint32_t)ADC_OVSAMPCTL_TOVS;
}else{
ADC_OVSAMPCTL &= ~((uint32_t)ADC_OVSAMPCTL_TOVS);
}
/* configure the shift and ratio */
ADC_OVSAMPCTL &= ~((uint32_t)(ADC_OVSAMPCTL_OVSR | ADC_OVSAMPCTL_OVSS));
ADC_OVSAMPCTL |= ((uint32_t)shift | (uint32_t)ratio);
}
/*!
\brief enable ADC oversample mode
\param[in] none
\param[out] none
\retval none
*/
void adc_oversample_mode_enable(void)
{
ADC_OVSAMPCTL |= ADC_OVSAMPCTL_OVSEN;
}
/*!
\brief disable ADC oversample mode
\param[in] none
\param[out] none
\retval none
*/
void adc_oversample_mode_disable(void)
{
ADC_OVSAMPCTL &= ~((uint32_t)ADC_OVSAMPCTL_OVSEN);
}