/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 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 "usb_device.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* 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 ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_ADC1_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* ADC_proc/ADC_proc_shadow/Sweep_state definitions */
volatile struct ADC_proc_typedef ADC_proc, ADC_proc_shadow;
volatile struct Sweep_state_typedef Sweep_state;
volatile uint32_t curr_step_start_N = 0;

/* ADC1 circular DMA buffer definition */
uint16_t ADC1_buff_circular[ADC_BUFF_SIZE];
//char ADC_msg[] = "curr_step   ??????  ??????????\r\nSweep_start\n\r";
char ADC_msg[] = "stp ??????  ??????????\r\nSweep_start\n\r";
#define ADC_msg_len 24
#define ADC_msg_len_Sweep_start 37
#define ADC_msg_val_pos 12
#define ADC_msg_step_pos 4
/* 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 */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC1_Init();
  MX_USB_DEVICE_Init();
  /* USER CODE BEGIN 2 */
  HAL_GPIO_WritePin(LED_BLUE_GPIO_Port, LED_BLUE_Pin, GPIO_PIN_SET);
  HAL_ADC_Start_DMA(&hadc1, (uint32_t*)ADC1_buff_circular, ADC_BUFF_SIZE);
  
  ADC_proc_shadow.status = 0; // ADC started
  ADC_proc_shadow.N = 0;
  ADC_proc_shadow.sum = 0;
  ADC_proc_shadow.avg = 0;

  ADC_proc.status = 0; // ADC started
  ADC_proc.N = 0;
  ADC_proc.sum = 0;
  ADC_proc.avg = 0;

  uint32_t curr_points_N_max = 100;
  uint32_t curr_points_N =0;

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    //HAL_GPIO_TogglePin(LED_RED_GPIO_Port, LED_RED_Pin);
    //HAL_Delay(100);

    if (ADC_proc_shadow.status == 2) {
      ADC_proc_shadow.avg = ADC_proc_shadow.sum / ADC_proc_shadow.N;
      ADC_proc_shadow.status = 1; // reset for next accumulation
      ADC_proc_shadow.sum = 0;
      ADC_proc_shadow.N = 0;
      
      
      ADC_msg[ADC_msg_val_pos + 0] = (ADC_proc_shadow.avg / 10000000000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 1] = (ADC_proc_shadow.avg / 1000000000) % 10 +  '0';
      ADC_msg[ADC_msg_val_pos + 2] = (ADC_proc_shadow.avg / 10000000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 3] = (ADC_proc_shadow.avg / 1000000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 4] = (ADC_proc_shadow.avg / 100000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 5] = (ADC_proc_shadow.avg / 10000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 6] = (ADC_proc_shadow.avg / 1000) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 7] = (ADC_proc_shadow.avg / 100) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 8] = (ADC_proc_shadow.avg / 10) % 10 + '0';
      ADC_msg[ADC_msg_val_pos + 9] = (ADC_proc_shadow.avg / 1) % 10 + '0';

      ADC_msg[ADC_msg_step_pos + 0] = (Sweep_state.curr_step_N / 100000) % 10 + '0';
      ADC_msg[ADC_msg_step_pos + 1] = (Sweep_state.curr_step_N / 10000) % 10 + '0';
      ADC_msg[ADC_msg_step_pos + 2] = (Sweep_state.curr_step_N / 1000) % 10 + '0';
      ADC_msg[ADC_msg_step_pos + 3] = (Sweep_state.curr_step_N / 100) % 10 + '0';
      ADC_msg[ADC_msg_step_pos + 4] = (Sweep_state.curr_step_N / 10) % 10 + '0';
      ADC_msg[ADC_msg_step_pos + 5] = (Sweep_state.curr_step_N / 1) % 10 + '0';
      

      //HAL_GPIO_TogglePin(LED_RED_GPIO_Port, LED_RED_Pin);
      

      if (Sweep_state.curr_step_N > 10000){
        Sweep_state.curr_step_N = 0;
        Sweep_state.sweep_cycle_started_flag = 1;
      }
      if (Sweep_state.sweep_cycle_started_flag == 1){
        Sweep_state.sweep_cycle_started_flag = 0; // reset sweep cycle flag
        HAL_GPIO_TogglePin(LED_RED_GPIO_Port, LED_RED_Pin);
        //CDC_Transmit_FS((uint8_t *)ADC_msg, ADC_msg_len_Sweep_start);
        while (CDC_Transmit_FS((uint8_t *)ADC_msg, ADC_msg_len_Sweep_start) == USBD_BUSY){
          //HAL_Delay(1);
        }

      }else{
              CDC_Transmit_FS((uint8_t *)ADC_msg, ADC_msg_len);

      }

    }
    //CDC_Transmit_FS((uint8_t *)"Hello from STM32!\r\n", 19);
    
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* 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
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** 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_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 336;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 7;
  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_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief ADC1 Initialization Function
  * @param None
  * @retval None
  */
static 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 */

  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.ScanConvMode = DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
  hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_Ext_IT11;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DMAContinuousRequests = ENABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
  */
  sConfig.Channel = ADC_CHANNEL_3;
  sConfig.Rank = 1;
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ADC1_Init 2 */

  /* USER CODE END ADC1_Init 2 */

}

/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{

  /* DMA controller clock enable */
  __HAL_RCC_DMA2_CLK_ENABLE();

  /* DMA interrupt init */
  /* DMA2_Stream0_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* USER CODE BEGIN MX_GPIO_Init_1 */

  /* USER CODE END MX_GPIO_Init_1 */

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LED_RED_GPIO_Port, LED_RED_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LED_BLUE_GPIO_Port, LED_BLUE_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin : CURR_STEP_START_TRG_Pin */
  GPIO_InitStruct.Pin = CURR_STEP_START_TRG_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(CURR_STEP_START_TRG_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : SWEEP_CYCLE_START_TRG_Pin */
  GPIO_InitStruct.Pin = SWEEP_CYCLE_START_TRG_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(SWEEP_CYCLE_START_TRG_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : PF11 */
  GPIO_InitStruct.Pin = GPIO_PIN_11;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);

  /*Configure GPIO pins : LED_RED_Pin LED_BLUE_Pin */
  GPIO_InitStruct.Pin = LED_RED_Pin|LED_BLUE_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI0_IRQn);

  HAL_NVIC_SetPriority(EXTI3_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI3_IRQn);

  /* USER CODE BEGIN MX_GPIO_Init_2 */

  /* USER CODE END MX_GPIO_Init_2 */
}

/* 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 */