iocollect/Core/Src/adc.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    adc.c
  * @brief   This file provides code for the configuration
  *          of the ADC instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "adc.h"

/* USER CODE BEGIN 0 */
float CalculateTemperature(uint16_t adc_value, float vref);
/* USER CODE END 0 */

ADC_HandleTypeDef hadc1;

/* ADC1 init function */
void MX_ADC1_Init(void)
{

  /* USER CODE BEGIN ADC1_Init 0 */

  /* USER CODE END ADC1_Init 0 */

  ADC_ChannelConfTypeDef sConfig = {0};

  /* USER CODE BEGIN ADC1_Init 1 */

  /* USER CODE END ADC1_Init 1 */

  /** Common config
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = ENABLE;
  hadc1.Init.NbrOfDiscConversion = 1;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 3;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_10;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_11;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_12;
  sConfig.Rank = ADC_REGULAR_RANK_3;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ADC1_Init 2 */

  /* USER CODE END ADC1_Init 2 */

}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */

  /* USER CODE END ADC1_MspInit 0 */
    /* ADC1 clock enable */
    __HAL_RCC_ADC1_CLK_ENABLE();

    __HAL_RCC_GPIOC_CLK_ENABLE();
    /**ADC1 GPIO Configuration
    PC0     ------> ADC1_IN10
    PC1     ------> ADC1_IN11
    PC2     ------> ADC1_IN12
    */
    GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

    /* ADC1 interrupt Init */
    HAL_NVIC_SetPriority(ADC1_2_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(ADC1_2_IRQn);
  /* USER CODE BEGIN ADC1_MspInit 1 */

  /* USER CODE END ADC1_MspInit 1 */
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{

  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspDeInit 0 */

  /* USER CODE END ADC1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC1_CLK_DISABLE();

    /**ADC1 GPIO Configuration
    PC0     ------> ADC1_IN10
    PC1     ------> ADC1_IN11
    PC2     ------> ADC1_IN12
    */
    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2);

    /* ADC1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(ADC1_2_IRQn);
  /* USER CODE BEGIN ADC1_MspDeInit 1 */

  /* USER CODE END ADC1_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

uint8_t adc1_byte1 = 0;   
uint8_t adc2_byte1 = 0;                      // 定义一个字节变量用于存储转换结果
uint8_t adc3_byte1 = 0;   
uint8_t adc1_byte2 = 0;   
uint8_t adc2_byte2 = 0;                      // 定义一个字节变量用于存储转换结果
uint8_t adc3_byte2 = 0;
uint16_t Value_old_addr2;
uint16_t Value_old_addr3;
uint16_t adc1_filtered = 0;
uint16_t adc2_filtered = 0;
uint16_t adc3_filtered = 0;
uint16_t adc1_raw_buffer[FILTER_LENGTH] = {0};
uint16_t adc2_raw_buffer[FILTER_LENGTH] = {0};
uint16_t adc3_raw_buffer[FILTER_LENGTH] = {0};
uint8_t adc1_raw_buffer_index = 0;
uint8_t adc2_raw_buffer_index = 0;
uint8_t adc3_raw_buffer_index = 0;
uint16_t adc2_rawValue = 0;
uint16_t adc3_rawValue = 0;

void AdcCalibration_init(void)
{
    Value_old_addr2 = read_flash_16(ADDR_FLASH_PAGE_124);
    Value_old_addr3 = read_flash_16(ADDR_FLASH_PAGE_134);
    
    Adc2_CalibrationValue = Value_old_addr2 != 0xFFFF ? Value_old_addr2 : Adc2_CalibrationValue;
    Adc3_CalibrationValue = Value_old_addr3 != 0xFFFF ? Value_old_addr3 : Adc3_CalibrationValue;
    Adc2_CalibrationValue &= 0x7FFF;
    Adc3_CalibrationValue &= 0x7FFF;
}  

void ApplyFilter(uint16_t raw_data, uint16_t* filtered_data, uint16_t* raw_data_buffer, uint8_t* buffer_index)
{
    raw_data_buffer[*buffer_index] = raw_data;
    uint32_t sum = 0;
    for (uint8_t i = 0; i < FILTER_LENGTH; i++) {
        sum += raw_data_buffer[i];
    }
    *filtered_data = (uint16_t)(sum / FILTER_LENGTH);
    *buffer_index = (*buffer_index + 1) % FILTER_LENGTH;	//指向最旧的
}


//#define R_NOMINAL 10000.0f   // 注册时NTC热敏电阻的阻值
//#define T_NOMINAL 298.15f    // 注册时NTC热敏电阻的温度值，转化为开尔文温标
//#define B_FACTOR  3950.0f    // NTC热敏电阻的B参数
//float CalculateTemperature(uint16_t adc_value, float vref)
//{
//    float voltage = adc_value * vref / 4096.0f;   // 根据ADC值计算输入电压
//    float resistance = R_NOMINAL * (voltage / (vref - voltage));   // 根据电压计算NTC热敏电阻阻值
//    
//    float steinhart = log(resistance / R_NOMINAL) / B_FACTOR + 1.0f / T_NOMINAL;   // 根据瑞利恒式计算温度
//    float temperature = 1.0f / steinhart - 273.15f;   // 转换为摄氏温度
//	return temperature;
//}

float array1[] = {-40, -39, -38, -37, -36, -35, -34, -33, -32, -31, -30, 
                    -29, -28, -27, -26, -25, -24, -23, -22, -21, -20, 
                    -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, 
                    -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 
                    4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 
                    17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 
                    29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 
                    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 
                    53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 
                    65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 
                    77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 
                    89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 
                    101, 102, 103, 104, 105};
                    
float array2[] = {340.9281f, 318.8772f, 298.3978f, 279.3683f, 261.6769f, 
                  245.2212f, 229.9072f, 215.6488f, 202.3666f, 189.9878f, 
                  178.4456f, 167.6783f, 157.6292f, 148.2460f, 139.4807f, 
                  131.2888f, 123.6294f, 116.4648f, 109.7600f, 103.4829f, 
                  97.6037f, 92.0947f, 86.9305f, 82.0877f, 77.5442f, 73.2798f, 
                  69.2759f, 65.5149f, 61.9809f, 58.6587f, 55.5345f, 52.5954f, 
                  49.8294f, 47.2253f, 44.7727f, 42.4620f, 40.2841f, 38.2307f, 
                  36.2940f, 34.4668f, 32.7421f, 31.1138f, 29.5759f, 28.1229f, 
                  26.7496f, 25.4513f, 24.2234f, 23.0618f, 21.9625f, 20.9218f, 
                  19.9364f, 19.0029f, 18.1184f, 17.2800f, 16.4852f, 15.7313f, 
                  15.0161f, 14.3375f, 13.6932f, 13.0815f, 12.5005f, 11.9485f, 
                  11.4239f, 10.9252f, 10.4510f, 10.0000f, 9.5709f, 9.1626f, 
                  8.7738f, 8.4037f, 8.0512f, 7.7154f, 7.3954f, 7.0904f, 6.7996f, 
                  6.5223f, 6.2577f, 6.0053f, 5.7645f, 5.5345f, 5.3150f, 5.1053f, 
                  4.9050f, 4.7136f, 4.5307f, 4.3558f, 4.1887f, 4.0287f, 3.8758f, 
                  3.7294f, 3.5893f, 3.4553f, 3.3269f, 3.2039f, 3.0862f, 2.9733f, 
                  2.8652f, 2.7616f, 2.6622f, 2.5669f, 2.4755f, 2.3879f, 2.3038f, 
                  2.2231f, 2.1456f, 2.0712f, 1.9998f, 1.9312f, 1.8653f, 1.8019f, 
                  1.7411f, 1.6826f, 1.6264f, 1.5723f, 1.5203f, 1.4703f, 1.4222f, 
                  1.3759f, 1.3313f, 1.2884f, 1.2471f, 1.2073f, 1.1690f, 1.1321f, 
                  1.0965f, 1.0623f, 1.0293f, 0.9974f, 0.9667f, 0.9372f, 0.9086f, 
                  0.8811f, 0.8545f, 0.8289f, 0.8042f, 0.7803f, 0.7572f, 0.7350f, 
                  0.7135f, 0.6927f, 0.6727f, 0.6533f, 0.6346f, 0.6165f, 0.5990f, 
                  0.5821f};

uint16_t max_adc1;
uint16_t max_adc2;
uint16_t temperature1 = 0;
				  
void findIndexAndTemp(float resistance, float array1[], float array2[], int index2, int index1, int arrLen){
	
	uint8_t temp = 0;
    const float resRange = (array2[index2] - array2[index2+1]) / 10.0f;
    float resArr[arrLen];
    for(int i = 0; i < arrLen; i++){
        resArr[i] = array2[index2+1] + i * resRange;
    }
    int index = -1; 
    float minDiff = 1000.0f; 
    for(int i = 0; i < arrLen; i++){
        float diff = fabs(resistance - resArr[i]);
        index = (diff < minDiff) ? i : index;
        minDiff = (diff < minDiff) ? diff : minDiff;
    }
    
    const float tempRange = 0.1f;
    float tempArr[arrLen];
    for(int i = 0; i < arrLen; i++){
        tempArr[i] = array1[index1] + i * tempRange; 
    }
	
	if(resArr[index] > 340.9821f){
		temperature1 = 0x8190;
	}
	else if(resArr[index] > 32.7421f){
		temp = fabs(tempArr[index]) * 10;
		temperature1 = temp | 0x8000;
	}
	else if(resArr[index] > 0.5821f){
		temperature1 = tempArr[index] * 10;
	}
	else{
		temperature1 = 0x041A;
	}
	temp = 0;
}
				  
#define R_NOMINAL 10.0f   // 注册时NTC热敏电阻的阻值
#define T_NOMINAL 298.15f    // 注册时NTC热敏电阻的温度值，转化为开尔文温标
#define B_FACTOR  3950.0f    // NTC热敏电阻的B参数
float CalculateTemperature(uint16_t adc_value, float vref)
{
    float voltage = adc_value * vref / 4096.0f;   // 根据ADC值计算输入电压
    float resistance = R_NOMINAL * (voltage / (vref - voltage));   // 根据电压计算NTC热敏电阻阻值
    
//	printf("%.3f\r\n",resistance);
//	HAL_Delay(500);
//	printf("%.4f\n",array2[0]);	
//	printf("%.4f\n",array2[0]);
	
	for (int  i = 0; i < sizeof(array2) - 1; i++) {
	  if (resistance >= array2[i+1] && resistance < array2[i]) {
		findIndexAndTemp(resistance, array1, array2, i, i, 10);
		break;
	  }
	}
//	printf("%d\r\n",temperature1);//十进制
//	printf("%4x\r\n\n",temperature1);//十六进制
	return temperature1;
}


void GetADCResults(ADC_HandleTypeDef* hadc)
{
    HAL_ADC_Start(&hadc1);
    HAL_ADC_PollForConversion(&hadc1, 100);
    uint16_t adc1_raw = HAL_ADC_GetValue(&hadc1);
	uint16_t temperature = CalculateTemperature(adc1_raw, 3.3);
    ApplyFilter((uint16_t)temperature, &adc1_filtered, adc1_raw_buffer, &adc1_raw_buffer_index);
	
    HAL_ADC_Start(&hadc1);
    HAL_ADC_PollForConversion(&hadc1, 100);
    uint16_t adc2_raw = HAL_ADC_GetValue(&hadc1);
    adc2_rawValue = adc2_raw;
    if (adc2_raw != 0) {
        adc2_raw += (Value_old_addr2 & 0x8000) ? Adc2_CalibrationValue : -Adc2_CalibrationValue;
		max_adc1 = (3*4096)/3.3;
		if(adc2_raw >= max_adc1){
			adc2_raw = max_adc1;
		}
    }
    ApplyFilter(adc2_raw, &adc2_filtered, adc2_raw_buffer, &adc2_raw_buffer_index);
    
    HAL_ADC_Start(&hadc1);
    HAL_ADC_PollForConversion(&hadc1, 100);
    uint16_t adc3_raw = HAL_ADC_GetValue(&hadc1);
    adc3_rawValue = adc3_raw;
    if (adc3_raw != 0) {
        adc3_raw += (Value_old_addr3 & 0x8000) ? Adc3_CalibrationValue : -Adc3_CalibrationValue;
		max_adc2 = (3*4096)/3.3;
		if(adc3_raw >= max_adc2){
			adc3_raw = max_adc2;
		}
    }
    ApplyFilter(adc3_raw, &adc3_filtered, adc3_raw_buffer, &adc3_raw_buffer_index);
	
    adc1_byte1 = (uint8_t)(adc1_filtered >> 8);
    adc1_byte2 = (uint8_t)(adc1_filtered);
    adc2_byte1 = (uint8_t)(adc2_filtered >> 8);
    adc2_byte2 = (uint8_t)(adc2_filtered);
    adc3_byte1 = (uint8_t)(adc3_filtered >> 8);
    adc3_byte2 = (uint8_t)(adc3_filtered);

    HAL_ADC_Stop(&hadc1); //关闭ADC以降低功耗
}



/* USER CODE END 1 */