/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2026 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 "dma.h"
#include "fatfs.h"
#include "sdio.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "usb_device.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "ltc2508_driver.h"
#include "rs485_driver.h"
#include "data_packet.h"
#include "correction.h"
#include "data_storage.h"
#include "system_monitor.h"
/* 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 ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
// 校正参数
CorrectionParams_t g_correction_params;
// 数据包
DataPacket_t g_data_packet;
// 数据存储句柄
DataStorageHandle_t g_data_storage;
// 系统状态
static uint32_t g_last_monitor_update = 0;
static uint8_t g_recording_enabled = 0;
/* USER CODE END PV */

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

/* 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 */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_SDIO_SD_Init();
  MX_SPI1_Init();
  MX_SPI2_Init();
  MX_SPI3_Init();
  MX_TIM1_Init();
  MX_USART1_UART_Init();
  MX_FATFS_Init();
  MX_USB_DEVICE_Init();
  MX_USART3_UART_Init();
  /* USER CODE BEGIN 2 */
  // 初始化系统监控
  SystemMonitor_Init();
  SystemMonitor_SetState(SYSTEM_STATE_INIT);
  
  // 初始化LTC2508驱动
  if (LTC2508_Init(&hspi1, &hspi2, &hspi3) != LTC2508_OK) {
    SystemMonitor_ReportError(SYSTEM_ERROR_ADC);
    Error_Handler();
  }
  
  // 初始化RS485通信
  RS485_Init(&huart1, RS485_DE_RE_PORT, RS485_DE_RE_PIN);
  
  // 初始化校正参数
  Init_CorrectionParams(&g_correction_params);
  Load_CorrectionParams_FromFlash(&g_correction_params);
  
  // 初始化数据存储
  if (DataStorage_Init(&g_data_storage) != HAL_OK) {
    SystemMonitor_ReportError(SYSTEM_ERROR_STORAGE);
  }
  
  // 系统初始化完成
  SystemMonitor_SetState(SYSTEM_STATE_IDLE);
  
  // 触发信号引脚初始化
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
    // 系统监控更新 (每100ms更新一次)
    uint32_t current_tick = HAL_GetTick();
    if (current_tick - g_last_monitor_update >= 100) {
      SystemMonitor_Update();
      g_last_monitor_update = current_tick;
    }
    
    // 检查ADC数据是否准备就绪
    if (g_adc_data_ready_flag)
    {
        g_adc_data_ready_flag = 0; // 清除标志
        SystemMonitor_SetState(SYSTEM_STATE_SAMPLING);

        // 1. 合并数据 (高位16位在前)
        int32_t raw_adc[NUM_LTC2508];
        raw_adc[0] = (int32_t)(((uint32_t)g_adc_data[0][0] << 16) | g_adc_data[0][1]);
        raw_adc[1] = (int32_t)(((uint32_t)g_adc_data[1][0] << 16) | g_adc_data[1][1]);
        raw_adc[2] = (int32_t)(((uint32_t)g_adc_data[2][0] << 16) | g_adc_data[2][1]);

        // 2. 验证数据有效性
        for (uint8_t i = 0; i < NUM_LTC2508; i++) {
          if (LTC2508_ValidateData(i) != LTC2508_OK) {
            SystemMonitor_ReportError(SYSTEM_ERROR_ADC);
            continue; // 跳过无效数据
          }
        }

        // 3. 应用校正算法
        CorrectionResult_t correction_result;
        if (Apply_Correction(raw_adc[0], raw_adc[1], raw_adc[2], 
                           &correction_result, &g_correction_params) == HAL_OK) {
          
          // 4. 打包校正后的数据
          PackData(&g_data_packet, (int32_t)correction_result.corrected_x, 
                   (int32_t)correction_result.corrected_y, 
                   (int32_t)correction_result.corrected_z);
        } else {
          // 校正失败，使用原始数据
          PackData(&g_data_packet, raw_adc[0], raw_adc[1], raw_adc[2]);
        }

        // 5. 发送数据包
        if (RS485_SendData((uint8_t*)&g_data_packet, sizeof(DataPacket_t)) != HAL_OK) {
          SystemMonitor_ReportError(SYSTEM_ERROR_COMMUNICATION);
        }
        
        // 6. 存储数据到SD卡 (如果启用记录)
        if (g_recording_enabled) {
          SystemMonitor_SetState(SYSTEM_STATE_RECORDING);
          if (DataStorage_WriteData(&g_data_storage, &g_data_packet) != HAL_OK) {
            SystemMonitor_ReportError(SYSTEM_ERROR_STORAGE);
          }
        }
        
        SystemMonitor_SetState(SYSTEM_STATE_IDLE);
    }
    
    // ADC采样由PA1外部中断触发，不在主循环中触发
  }
  /* 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 = 25;
  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();
  }
}

/* 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 */
