/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @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 "main.h"
#include "adc.h"
#include "dac.h"
#include "dma.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "arm_math.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
#define DATA_LEN 2048
uint32_t   result_data[DATA_LEN];
//float32_t  rms_buf[DATA_LEN];

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

arm_rfft_fast_instance_f32 S;


float32_t fft_rawdata[DATA_LEN];
float32_t fft_outdata[DATA_LEN];
float32_t fft_mag[DATA_LEN>>1];
float32_t window_data[DATA_LEN];

float32_t Vdc= 0;
float32_t V50hz_mA=0;
//float32_t offset= 0;
float32_t max_val,main_freq;
float32_t rms_mV,rms_mA,Vpp;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */


void arm_hanning_f32(float32_t * pDst,uint32_t blockSize)
{
   float32_t k = 2.0f / ((float32_t) blockSize);
   float32_t w;

   for(uint32_t i=0;i<blockSize;i++)
   {
     w = PI * i * k;
     w = 0.5f * (1.0f - cosf (w));
     pDst[i] = w;
   }
}

void Cur_sensor_pwr_on(void)
{
  HAL_GPIO_WritePin(GPIOC, SENSOR_PWR_CTRL_Pin, GPIO_PIN_SET);
  HAL_Delay(1);
  // init dac
  HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,2048);
  // 延时等待模拟部分启动稳定。具体延时等待测试待测试。
  HAL_Delay(800);
}

void Cur_sensor_pwr_off(void)
{
  // init dac
  HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,0);
  //HAL_DAC_Stop(&hdac1,DAC_CHANNEL_1);
  //HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,2048);
  //HAL_Delay(1);
  HAL_GPIO_WritePin(GPIOC, SENSOR_PWR_CTRL_Pin, GPIO_PIN_RESET);
 
}



void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
  
  uint32_t i;
  // 关闭模拟电路电源
  //Cur_sensor_pwr_off();
  
  //float32_t max_val,main_freq;
  uint32_t max_val_freq;
  for(i = 0;i<DATA_LEN;i++)
  {
    // 加窗
    fft_rawdata[i]= (float32_t)result_data[i]*window_data[i];
  }
  //arm_rms_f32(fft_rawdata,DATA_LEN,&rms_mV);
  //arm_q15_to_float(result_data,fft_rawdata,DATA_LEN);
  arm_rfft_fast_f32(&S,fft_rawdata,fft_outdata,0);
 
  arm_cmplx_mag_f32(fft_outdata,fft_mag,DATA_LEN>>1);
  
  arm_scale_f32(fft_mag,4.0f/DATA_LEN,fft_mag,DATA_LEN>>1);
  
  Vdc = fft_mag[0]/2.0f;
  
  arm_max_f32(&fft_mag[5],(DATA_LEN>>2)-1,&max_val,&max_val_freq);
  
  main_freq = ((float32_t)max_val_freq+5.0)/DATA_LEN*2000.0;
  // 单独50Hz频率信号的有效值 无需归零校准
  V50hz_mA = fft_mag[51]/4096.0*3300.0f*0.0380/1.414;
  
  // 信号频率为50Hz左右
//  if(main_freq<75.0f && main_freq>35.0f)
//  {
    for(i = 0;i<DATA_LEN;i++)
    {
      fft_rawdata[i]= result_data[i]-Vdc;
    }
    // 去除直流信号后，标准方式计算有效值，此数据容易受噪声影响，有底噪RMS?
    arm_rms_f32(fft_rawdata,DATA_LEN,&rms_mV);
    rms_mV = rms_mV/4096.0*3300.0f;
    // 300匝 交流互感  0.0380
    // 350匝 交流互感  0.04412
    rms_mA = rms_mV*0.0380;
//  }else
//  {
//    //rms_mV = 0;
//   /// rms_mA = 0;
//  }
  
}



/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */
  arm_rfft_fast_init_f32(&S, DATA_LEN);
  arm_hanning_f32(window_data,DATA_LEN);
  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC1_Init();
  MX_USART1_UART_Init();
  MX_USART3_UART_Init();
  MX_TIM6_Init();
  MX_DAC1_Init();
  /* USER CODE BEGIN 2 */
 // HAL_PWREx_EnterSTOP0Mode(PWR_STOPENTRY_WFI);

  HAL_PWREx_EnableBatteryCharging(PWR_BATTERY_CHARGING_RESISTOR_1_5);
  HAL_ADCEx_Calibration_Start(&hadc1,ADC_SINGLE_ENDED);
  
  // 模拟电路电源没开之前 dac输出0 保证不会串电流
  HAL_DAC_Start(&hdac1,DAC_CHANNEL_1); 
  // 开启缓冲后  设置为0  实测有40mV左右电压 猜测和缓冲器Vos有关
  HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,0);
  
  // 开启模拟电路电源，抬参考源
  Cur_sensor_pwr_on();
  HAL_ADC_Start_DMA(&hadc1,(uint32_t *)result_data,DATA_LEN);
  HAL_TIM_Base_Start(&htim6);
  
  //HAL_Delay(500);

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
   // HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,2048);
    //HAL_ADC_Start_DMA(&hadc1,(uint32_t *)result_data,DATA_LEN);
   // HAL_GPIO_TogglePin(GPIO_LED_GPIO_Port, GPIO_LED_Pin);
    HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON,PWR_SLEEPENTRY_WFI);
   // HAL_TIM_Base_Start(&htim6);

    
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE2) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */