/* 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 "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "canEmu.h"
#include "rs_message.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 */

/* 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 */
CANEmu_HandleTypeDef hcanemu;
int flag_manual = 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_TIM2_Init();
  MX_TIM3_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  CANEmu_Init(&hcanemu, 125000);
  hcanemu.header.StdId = 0x123;
  MODBUS_FirstInit();
  RS_Receive_IT(&hmodbus1, &MODBUS_MSG);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  int transmit_prev = hcanemu.transmit;
  while (1)
  {
    if(flag_manual == 0)
    {
      hcanemu.start_poll          = MB_DATA.Coils.START_POLLING;
      hcanemu.transmit            = MB_DATA.Coils.START_SINGLE_FRAME;
      hcanemu.period_ms           = MB_DATA.HoldRegs.CAN_PERIOD;
      // can message
      hcanemu.header.IDE    = MB_DATA.Coils.HEADER_IDE;
      hcanemu.header.RTR    = MB_DATA.Coils.HEADER_RTR;      
      hcanemu.bitrate_bps   = (uint32_t)MB_DATA.HoldRegs.CAN_BITRATE_KBPS*1000;
      hcanemu.header.ExtId  = ((uint32_t)MB_DATA.HoldRegs.CAN_ID_HI << 16) || MB_DATA.HoldRegs.CAN_ID_LO;
      hcanemu.header.StdId  = hcanemu.header.ExtId;
      hcanemu.header.DLC    = (uint8_t)MB_DATA.HoldRegs.CAN_DLC & 0xF;
      hcanemu.data[0]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_0;
      hcanemu.data[1]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_1;
      hcanemu.data[2]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_2;
      hcanemu.data[3]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_3;
      hcanemu.data[4]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_4;
      hcanemu.data[5]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_5;
      hcanemu.data[6]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_6;
      hcanemu.data[7]       = (uint8_t)MB_DATA.HoldRegs.CAN_DATA_7;
      
      // errors
      hcanemu.errors.FF_SRS       = MB_DATA.Coils.FLIP_SRS;
      hcanemu.errors.FF_IDE       = MB_DATA.Coils.FLIP_IDE;
      hcanemu.errors.FF_RTR       = MB_DATA.Coils.FLIP_RTR;
      hcanemu.errors.FF_R1        = MB_DATA.Coils.FLIP_R1;
      hcanemu.errors.FF_R0        = MB_DATA.Coils.FLIP_R0;
      hcanemu.errors.MSGID        = MB_DATA.Coils.FLIP_MSGID_BIT;
      hcanemu.errors.DATA         = MB_DATA.Coils.FLIP_DATA_BIT;
      hcanemu.errors.CRC_ERR      = MB_DATA.Coils.FLIP_CRC_BIT;
      hcanemu.errors.STUFF_BITS   = MB_DATA.Coils.DISABLE_STUFF_BITS;
      
    }
    
    
    
    if(hcanemu.start_poll)
    {
      hcanemu.transmit = 0;
      HAL_Delay(hcanemu.period_ms);
      CANEmu_SendFrame(&hcanemu);
    }
    else if((hcanemu.transmit == 1) && (transmit_prev == 0))
    {
      CANEmu_SendFrame(&hcanemu);
    }
    transmit_prev = hcanemu.transmit;
    /* 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};

  /** 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.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != 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 */
