/* 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 "i2c.h"
#include "spi.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>

#include "retarget.h"
#include "oled.h"
#include "rc522.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 */
uint8_t rf_status;
uint8_t rf_card_type[3];
uint8_t rf_card_id[5];
uint8_t rf_data[16];

uint8_t ADDR = 0x01 * 4 + 0x03;
uint8_t KEY_A[6]= {0xff,0xff,0xff,0xff,0xff,0xff};
uint8_t KEY_B[6]= {0xff,0xff,0xff,0xff,0xff,0xff};

const char* SEP = "-------------------------\r\n";
/* 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_I2C1_Init();
  MX_USART1_UART_Init();
  MX_SPI1_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */
  // Retarget uart
  RetargetInit(&huart1);

  // Init RC522
  MFRC_Init();
  PCD_Reset();

  // Init OLED
  OLED_Init();
  OLED_Clear();

  OLED_ShowString(0,0,"scanning...",12);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    rf_status = PCD_Request(PICC_REQALL, rf_card_type);

    if (!rf_status) {
      rf_status = PCD_ERR;
      HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, GPIO_PIN_SET);
      rf_status = PCD_AntiColl(rf_card_id);
    }

    if (!rf_status) {
      rf_status = PCD_ERR;
      printf(SEP);
      printf("[i] Card Type: %02X %02X %02X\r\n", rf_card_type[0], rf_card_type[1], rf_card_type[2]);
      printf("[i] Card ID  : %02X-%02X-%02X-%02X\r\n", rf_card_id[0], rf_card_id[1], rf_card_id[2], rf_card_id[3]);

      OLED_ShowString(0, 2, "Typ:", 12);
      uint8_t card_type_buffer[9];
      snprintf(card_type_buffer, sizeof card_type_buffer, "%02X %02X %02X", rf_card_type[0], rf_card_type[1], rf_card_type[2]);
      OLED_ShowString(38, 2, card_type_buffer, 12);

      OLED_ShowString(0, 4, "ID :", 12);
      uint8_t card_id_buffer[12];
      snprintf(card_id_buffer, sizeof card_id_buffer, "%02X-%02X-%02X-%02X", rf_card_id[0], rf_card_id[1], rf_card_id[2], rf_card_id[3]);
      OLED_ShowString(36, 4, card_id_buffer, 12);

      rf_status = PCD_Select(rf_card_id);
    }

    if (!rf_status) {
      rf_status = PCD_ERR;

      rf_status = PCD_AuthState(PICC_AUTHENT1A, ADDR, KEY_A, rf_card_id);
      if(rf_status == PCD_OK)
      {
        printf("[*] Key A pass\r\n");
      }
      else
      {
        printf("[!] Key A verification failed\r\n");
      }

      rf_status = PCD_AuthState(PICC_AUTHENT1B, ADDR, KEY_B, rf_card_id);
      if(rf_status == PCD_OK)
      {
        printf("[*] Key B pass\r\n");
      }
      else
      {
        printf("[!] Key B verification failed\r\n");
      }
    }

    if(rf_status == PCD_OK)
    {
      rf_status = PCD_ERR;
      rf_status = PCD_ReadBlock(ADDR, rf_data);

      if(rf_status == PCD_OK)
      {
        printf("[+] Data in sector %d block %d: ", ADDR/4, ADDR%4);
        for(int i = 0; i < 16; i++)
        {
            printf("%02x", rf_data[i]);
        }
        printf("\r\n");
      }
      else
      {
          printf("Read card failed\r\n");
      }
      HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, GPIO_PIN_RESET);
      HAL_Delay(3000);
    }
    /* 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 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
  if(GPIO_Pin == KEY1_Pin)
  {
    OLED_Clear();
  }
}
/* 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 */