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https://github.com/WeActStudio/ArduinoCore-AT32F4.git
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ZYQ-FEIYUE
255
cores/arduino/libcore/adc.c
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255
cores/arduino/libcore/adc.c
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/*
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* MIT License
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* Copyright (c) 2017 - 2022 _VIFEXTech
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "adc.h"
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#include <stdbool.h>
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#define ADC_DMA_REGMAX 18
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#define IS_ADC_CHANNEL(channel) (channel <= ADC_CHANNEL_17)
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/*引脚注册个数*/
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static uint8_t ADC_DMA_RegCnt = 0;
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/*ADC通道注册列表*/
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static uint8_t ADC_DMA_RegChannelList[ADC_DMA_REGMAX] = {0};
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/*ADC DMA缓存数组*/
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static uint16_t ADC_DMA_ConvertedValue[ADC_DMA_REGMAX] = {0};
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/**
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* @brief 搜索注册列表，找出ADC通道对应的索引号
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* @param ADC_Channel:ADC通道号
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* @retval ADC通道注册列表对应索引号，-1:未找到对应通道号
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*/
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static int16_t ADC_DMA_SearchChannel(uint16_t ADC_Channel)
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{
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uint8_t index;
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for(index = 0; index < ADC_DMA_RegCnt; index++)
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{
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if(ADC_Channel == ADC_DMA_RegChannelList[index])
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{
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return index;
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}
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}
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return -1;
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}
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/**
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* @brief ADC 配置
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* @param ADCx: ADC地址
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* @retval 无
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*/
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void ADCx_Init(adc_type* ADCx)
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{
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adc_base_config_type adc_base_struct;
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if(ADCx == ADC1)
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{
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crm_periph_clock_enable(CRM_ADC1_PERIPH_CLOCK, TRUE);
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}
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else if(ADCx == ADC2)
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{
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crm_periph_clock_enable(CRM_ADC2_PERIPH_CLOCK, TRUE);
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}
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#ifdef ADC3
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else if(ADCx == ADC3)
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{
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crm_periph_clock_enable(CRM_ADC3_PERIPH_CLOCK, TRUE);
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}
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#endif
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else
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{
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return;
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}
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crm_adc_clock_div_set(CRM_ADC_DIV_8);
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adc_combine_mode_select(ADC_INDEPENDENT_MODE);
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adc_base_default_para_init(&adc_base_struct);
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adc_base_struct.sequence_mode = FALSE;
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adc_base_struct.repeat_mode = FALSE;
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adc_base_struct.data_align = ADC_RIGHT_ALIGNMENT;
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adc_base_struct.ordinary_channel_length = 1;
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adc_base_config(ADCx, &adc_base_struct);
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if (ADCx != ADC3)
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adc_ordinary_conversion_trigger_set(ADCx, ADC12_ORDINARY_TRIG_SOFTWARE, TRUE);
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else
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adc_ordinary_conversion_trigger_set(ADCx, ADC3_ORDINARY_TRIG_SOFTWARE, TRUE);
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adc_enable(ADCx, TRUE);
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adc_calibration_init(ADCx);
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while(adc_calibration_init_status_get(ADCx));
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adc_calibration_start(ADCx);
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while(adc_calibration_status_get(ADCx));
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}
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/**
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* @brief 获取 ADC 值
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* @param ADCx: ADC地址
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* @param ADC_Channel: ADC通道
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* @retval 无
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*/
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uint16_t ADCx_GetValue(adc_type* ADCx, uint16_t ADC_Channel)
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{
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adc_ordinary_channel_set(ADCx, (adc_channel_select_type)ADC_Channel, 1, ADC_SAMPLETIME_41_5);
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adc_ordinary_software_trigger_enable(ADCx, TRUE);
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while(!adc_flag_get(ADCx, ADC_CCE_FLAG));
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return adc_ordinary_conversion_data_get(ADCx);
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}
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/**
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* @brief 注册需要DMA搬运的ADC通道
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* @param ADC_Channel:ADC通道号
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* @retval 见ADC_DMA_Res_Type
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*/
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ADC_DMA_Res_Type ADC_DMA_Register(uint8_t ADC_Channel)
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{
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/*初始化ADC通道列表*/
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static bool isInit = false;
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if(!isInit)
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{
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uint8_t i;
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for(i = 0; i < ADC_DMA_REGMAX; i++)
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{
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ADC_DMA_RegChannelList[i] = 0xFF;
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}
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isInit = true;
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}
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/*是否是合法ADC通道*/
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if(!IS_ADC_CHANNEL(ADC_Channel))
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return ADC_DMA_RES_NOT_ADC_CHANNEL;
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/*是否已在引脚列表重复注册*/
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if(ADC_DMA_SearchChannel(ADC_Channel) != -1)
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return ADC_DMA_RES_DUPLICATE_REGISTRATION;
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/*是否超出最大注册个数*/
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if(ADC_DMA_RegCnt >= ADC_DMA_REGMAX)
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return ADC_DMA_RES_MAX_NUM_OF_REGISTRATIONS_EXCEEDED;
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/*写入注册列表*/
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ADC_DMA_RegChannelList[ADC_DMA_RegCnt] = ADC_Channel;
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/*注册个数+1*/
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ADC_DMA_RegCnt++;
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return ADC_DMA_RES_OK;
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}
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/**
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* @brief 获取已注册的ADC DMA通道数量
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* @param 无
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* @retval ADC DMA通道数量
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*/
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uint8_t ADC_DMA_GetRegisterCount(void)
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{
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return ADC_DMA_RegCnt;
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}
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/**
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* @brief ADC DMA 配置
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* @param 无
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* @retval 无
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*/
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void ADC_DMA_Init(void)
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{
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dma_init_type dma_init_structure;
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adc_base_config_type adc_base_struct;
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uint8_t index;
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crm_periph_clock_enable(CRM_ADC1_PERIPH_CLOCK, TRUE);
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crm_periph_clock_enable(CRM_DMA1_PERIPH_CLOCK, TRUE);
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dma_reset(DMA1_CHANNEL1);
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dma_default_para_init(&dma_init_structure);
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dma_init_structure.buffer_size = ADC_DMA_RegCnt;
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dma_init_structure.direction = DMA_DIR_PERIPHERAL_TO_MEMORY;
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dma_init_structure.memory_base_addr = (uint32_t)ADC_DMA_ConvertedValue;
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dma_init_structure.memory_data_width = DMA_MEMORY_DATA_WIDTH_HALFWORD;
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dma_init_structure.memory_inc_enable = TRUE;
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dma_init_structure.peripheral_base_addr = (uint32_t) (&(ADC1->odt));
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dma_init_structure.peripheral_data_width = DMA_PERIPHERAL_DATA_WIDTH_HALFWORD;
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dma_init_structure.peripheral_inc_enable = FALSE;
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dma_init_structure.priority = DMA_PRIORITY_HIGH;
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dma_init_structure.loop_mode_enable = TRUE;
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dma_init(DMA1_CHANNEL1, &dma_init_structure);
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adc_combine_mode_select(ADC_INDEPENDENT_MODE);
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adc_base_default_para_init(&adc_base_struct);
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adc_base_struct.sequence_mode = FALSE;
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adc_base_struct.repeat_mode = FALSE;
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adc_base_struct.data_align = ADC_RIGHT_ALIGNMENT;
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adc_base_struct.ordinary_channel_length = 1;
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adc_base_config(ADC1, &adc_base_struct);
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adc_ordinary_conversion_trigger_set(ADC1, ADC12_ORDINARY_TRIG_SOFTWARE, TRUE);
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crm_adc_clock_div_set(CRM_ADC_DIV_8);
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for(index = 0; index < ADC_DMA_RegCnt; index++)
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{
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adc_ordinary_channel_set(
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ADC1,
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ADC_DMA_RegChannelList[index],
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index + 1,
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ADC_SAMPLETIME_41_5
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);
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if(ADC_DMA_RegChannelList[index] == ADC_CHANNEL_16)
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{
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adc_tempersensor_vintrv_enable(true);
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}
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}
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adc_dma_mode_enable(ADC1, TRUE);
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adc_enable(ADC1, TRUE);
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adc_calibration_init(ADC1);
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while(adc_calibration_init_status_get(ADC1));
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adc_calibration_start(ADC1);
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while(adc_calibration_status_get(ADC1));
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}
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/**
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* @brief 获取DMA搬运的ADC值
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* @param ADC_Channel:ADC通道号
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* @retval ADC值
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*/
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uint16_t ADC_DMA_GetValue(uint8_t ADC_Channel)
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{
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int16_t index;
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if(!IS_ADC_CHANNEL(ADC_Channel))
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return 0;
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index = ADC_DMA_SearchChannel(ADC_Channel);
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if(index == -1)
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return 0;
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return ADC_DMA_ConvertedValue[index];
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}
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