296 lines
8.4 KiB
C
296 lines
8.4 KiB
C
/**
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* @file adcs.c
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* @author xxx
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* @date 2023-09-04 15:59:16
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* @brief LL库ADC驱动
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* @copyright Copyright (c) 2023 by xxx, All Rights Reserved.
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*/
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#include "adcs.h"
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#define ADC_COLL 30 /* 通道单采集次数*/
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#define ADC_CH_NUM INMAX
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#define ADC_SUM ADC_CH_NUM *ADC_COLL /* 总采集次数 */
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#if defined(SRAM2_BASE)
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// 将 adc_value分配到SRAM2中，因为SRAM2的速度更快，可以提高ADC采集的速度
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volatile static uint16_t adc_value[ADC_COLL][INMAX] __attribute__((section(".sram2")));
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#else
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volatile static uint16_t adc_value[ADC_COLL][INMAX]; /* 存储ADC原始值 */
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#endif
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volatile static BOOL _flag = FALSE; /* DMA传输完成标志 */
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static BOOL init_flag = FALSE; /* ADC初始化标志 */
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volatile uint32_t adcs_ovr_count = 0;
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/**
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* @brief 这是一个用于处理ADC转换完成回调的函数
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* @param {adc_t} handle - 包含ADC句柄的信息
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* @return {*} 无
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*/
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void adc_dma_callback(adc_t handle)
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{
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// 检查DMA1的传输完成标志是否为1，如果是，则清除该标志
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if (LL_DMA_IsActiveFlag_TC1(handle.dma) != 0)
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{
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LL_DMA_ClearFlag_TC1(handle.dma);
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// 停止ADC转换
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LL_ADC_REG_StopConversion(handle.adc);
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// 关闭ADC,可以不关闭但是校准无法清除
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// LL_ADC_Disable(handle.adc);
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adc_completed_state_change(TRUE);
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}
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// 检查DMA1的传输错误标志是否为1，如果是，则清除该标志
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if (LL_DMA_IsActiveFlag_TE1(handle.dma) != 0)
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{
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LL_DMA_ClearFlag_TE1(handle.dma);
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}
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// ...
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}
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void adc_callback(adc_t handle)
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{
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if (LL_ADC_IsActiveFlag_OVR(handle.adc) != 0)
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{
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adcs_ovr_count++;
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LL_ADC_REG_StopConversion(handle.adc);
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LL_DMA_DisableChannel(handle.dma, handle.dma_channel);
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LL_DMA_SetDataLength(handle.dma, handle.dma_channel, ADC_SUM);
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LL_DMA_SetPeriphAddress(handle.dma, handle.dma_channel, LL_ADC_DMA_GetRegAddr(handle.adc, LL_ADC_DMA_REG_REGULAR_DATA));
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LL_DMA_SetMemoryAddress(handle.dma, handle.dma_channel, (uint32_t)&adc_value);
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LL_DMA_EnableChannel(handle.dma, handle.dma_channel);
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LL_ADC_ClearFlag_OVR(handle.adc);
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LL_ADC_ClearFlag_EOC(handle.adc);
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LL_ADC_REG_StartConversion(handle.adc); // 开始转换
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}
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}
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/**
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* @brief 初始化ADC
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* @param {adc_t} handle
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* @return {*}
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* @note TCONV(转换时间) = (采样时间 + 12.5 个周期)/(主频/ADC分频系数)
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*/
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void adc_init(adc_t handle)
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{
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init_flag = TRUE;
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uint32_t backup_setting_adc_dma_transfer = 0U;
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backup_setting_adc_dma_transfer = LL_ADC_REG_GetDMATransfer(handle.adc);
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LL_ADC_REG_SetDMATransfer(handle.adc, LL_ADC_REG_DMA_TRANSFER_NONE);
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// ADC开始校准
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LL_ADC_StartCalibration(handle.adc, LL_ADC_SINGLE_ENDED);
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// 等待校准完成
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while (LL_ADC_IsCalibrationOnGoing(handle.adc))
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;
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LL_ADC_REG_SetDMATransfer(handle.adc, backup_setting_adc_dma_transfer);
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LL_mDelay(10);
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LL_ADC_EnableIT_OVR(handle.adc);
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LL_ADC_Enable(handle.adc);
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LL_mDelay(10);
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LL_DMA_SetDataLength(handle.dma, handle.dma_channel, ADC_SUM);
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LL_DMA_SetPeriphAddress(handle.dma, handle.dma_channel, LL_ADC_DMA_GetRegAddr(handle.adc, LL_ADC_DMA_REG_REGULAR_DATA));
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LL_DMA_SetMemoryAddress(handle.dma, handle.dma_channel, (uint32_t)&adc_value);
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LL_DMA_EnableChannel(handle.dma, handle.dma_channel);
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if (backup_setting_adc_dma_transfer == LL_ADC_REG_DMA_TRANSFER_UNLIMITED)
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{
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LL_ADC_REG_StartConversion(handle.adc); // 开始转换
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}
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osel_memset((uint8_t *)adc_value, 0, sizeof(uint16_t) * ADC_COLL * INMAX);
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}
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/**
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* @brief 开始转换ADC
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* @param {adc_t} handle
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* @return {*}
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* @note 单次采集需要每次调用
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*/
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void adc_start(adc_t handle)
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{
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if (TRUE == init_flag)
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{
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LL_ADC_REG_StartConversion(handle.adc); // 开始转换
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}
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}
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/**
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* @brief 设置ADC转换完成状态变化回调函数
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* @param {BOOL} state
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* @return {*}
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*/
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void adc_completed_state_change(BOOL state)
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{
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_flag = state;
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}
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/**
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* @brief 获取ADC转换完成状态
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* @return {BOOL} ADC转换完成标志
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*/
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BOOL adc_completed(void)
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{
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return _flag;
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}
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/**
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* @brief 获取ADC第0个通道的读取结果
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* @param {uint8_t} in_num
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* @return {uint16_t} 返回当前值
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*/
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uint16_t adc_get_result0(uint8_t in_num)
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{
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return adc_value[0][in_num];
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}
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/**
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* @brief 获取ADC所有通道的读取结果平均值
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* @param {uint8_t} adc_num
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* @return {uint16_t} 返回平均值
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*/
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uint16_t adc_get_result_average(uint8_t adc_num)
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{
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uint32_t adc_sum = 0; // 用于存储所有ADC通道数据的和
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uint16_t adc_average = 0; // 用于存储平均值
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uint16_t i = 0; // 用于循环的变量
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for (i = 0; i < ADC_COLL; i++) // 遍历所有ADC通道
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{
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adc_sum += adc_value[i][adc_num]; // 将每个ADC通道的数据累加到adc_sum中
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}
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adc_average = adc_sum / ADC_COLL; // 计算平均值并存储在adc_average中
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return adc_average; // 返回平均值
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}
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/**
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* @brief 获取ADC所有通道的读取结果平均值，按照从小到大排序，取中间N个数据
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* @param {uint8_t} adc_num
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* @return {uint16_t} 返回平均值
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*/
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uint16_t adc_get_n_result_average(uint8_t adc_num)
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{
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uint32_t adc_sum = 0;
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uint16_t adc_average = 0;
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uint16_t array[ADC_COLL];
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uint8_t n = ADC_COLL / 4;
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uint8_t count = ADC_COLL > (2 * n) ? n : 0;
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for (uint16_t i = 0; i < ADC_COLL; i++)
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{
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array[i] = adc_value[i][adc_num];
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}
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osel_quick_sort(array, 0, ADC_COLL - 1);
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for (uint16_t i = count; i < ADC_COLL - count; i++)
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{
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adc_sum += array[i];
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}
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adc_average = adc_sum / (ADC_COLL - 2 * count);
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return adc_average;
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}
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/**
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* @brief 中位值滤波
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* @param {uint8_t} adc_num
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* @return {uint16_t} 返回中位数
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*/
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uint16_t adc_get_result_median(uint8_t adc_num)
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{
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uint16_t adc_temp[ADC_COLL];
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uint16_t i = 0, j = 0;
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uint16_t temp = 0;
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for (i = 0; i < ADC_COLL; i++)
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{
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adc_temp[i] = adc_value[i][adc_num];
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}
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for (i = 0; i < ADC_COLL - 1; i++)
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{
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for (j = 0; j < ADC_COLL - 1 - i; j++)
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{
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if (adc_temp[j] > adc_temp[j + 1])
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{
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temp = adc_temp[j];
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adc_temp[j] = adc_temp[j + 1];
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adc_temp[j + 1] = temp;
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}
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}
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}
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return adc_temp[ADC_COLL / 2];
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}
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/**
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* @brief 中位值平均滤波
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* @param {uint8_t} adc_num
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* @return {uint16_t} 返回中位数
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*/
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uint16_t adc_get_result_median_average(uint8_t adc_num)
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{
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uint16_t adc_temp[ADC_COLL];
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uint16_t i = 0, j = 0;
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uint16_t temp = 0;
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uint32_t adc_sum = 0; // 用于存储所有ADC通道数据的和
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uint16_t adc_average = 0; // 用于存储平均值
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for (i = 0; i < ADC_COLL; i++)
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{
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adc_temp[i] = adc_value[i][adc_num];
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}
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for (i = 0; i < ADC_COLL - 1; i++)
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{
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for (j = 0; j < ADC_COLL - 1 - i; j++)
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{
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if (adc_temp[j] > adc_temp[j + 1])
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{
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temp = adc_temp[j];
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adc_temp[j] = adc_temp[j + 1];
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adc_temp[j + 1] = temp;
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}
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}
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}
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for (i = 0; i < ADC_COLL; i++) // 遍历所有ADC通道
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{
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adc_sum += adc_temp[i]; // 将每个ADC通道的数据累加到adc_sum中
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}
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adc_average = adc_sum / ADC_COLL; // 计算平均值并存储在adc_average中
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return adc_average; // 返回平均值
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}
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/**
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* @brief 计算温度值
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* @param {uint16_t} measure - ADC读取到的温度值
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* @return {int32_t} 返回温度值
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* @note: 计算公式为：(measure * VDD_APPLI / VDD_CALIB) - (int32_t)*TEMP30_CAL_ADDR) * (int32_t)(130 - 30) / (int32_t)(*TEMP130_CAL_ADDR - *TEMP30_CAL_ADDR)) + 30
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*/
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int32_t compute_temperature(uint16_t measure)
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{
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#define TEMP130_CAL_ADDR ((uint16_t *)((uint32_t)0x1FF8007E))
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#define TEMP30_CAL_ADDR ((uint16_t *)((uint32_t)0x1FF8007A))
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#define VDD_CALIB ((uint16_t)(300))
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#define VDD_APPLI ((uint16_t)(330))
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int32_t tmp;
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tmp = ((measure * VDD_APPLI / VDD_CALIB) -
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(int32_t)*TEMP30_CAL_ADDR);
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tmp = tmp * (int32_t)(130 - 30);
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tmp = tmp / (int32_t)(*TEMP130_CAL_ADDR -
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*TEMP30_CAL_ADDR);
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tmp = tmp + 30;
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return (tmp);
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}
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/**
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* @brief 计算本地值
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* @param {uint16_t} measure - ADC读取到的电压值
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* @return {int32_t} 返回本地值
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* @note: 计算公式为：(1224.0 / measure) * 4096
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*/
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int32_t compute_value_local(uint16_t measure)
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{
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return (1224.0 / measure) * 4096;
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}
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