/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "usbd_core.h"
#include "usb_hid.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 ---------------------------------------------------------*/
UART_HandleTypeDef huart1;

PCD_HandleTypeDef hpcd_USB_FS;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_USB_PCD_Init(void);
/* USER CODE BEGIN PFP */
void hid_keyboard_init(uint8_t busid, uint32_t reg_base);
void hid_keyboard_test(uint8_t busid, uint8_t key);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void usb_dc_low_level_init(void)
{
  __HAL_RCC_USB_CLK_ENABLE();

  HAL_NVIC_SetPriority(USB_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(USB_IRQn);
}

int fputc(int c, FILE *f)
{
  uint8_t ch = c;
  HAL_UART_Transmit(&huart1, &ch, 1, 10);
  return c;
}
/* 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_USART1_UART_Init();
  MX_USB_PCD_Init();
  /* USER CODE BEGIN 2 */
  hid_keyboard_init(0, USB_BASE);
  
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_SET);
  HAL_Delay(100);
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_RESET);
  HAL_Delay(100);
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_SET);
  HAL_Delay(100);
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_RESET);
  HAL_Delay(100);
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_SET);
  HAL_Delay(100);
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin | LED4_Pin |
      LED5_Pin | LED6_Pin | LED7_Pin | LED8_Pin, GPIO_PIN_RESET);
  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    if (HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_1);
    } else if (HAL_GPIO_ReadPin(KEY2_GPIO_Port, KEY2_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_1 + 1);
    } else if (HAL_GPIO_ReadPin(KEY3_GPIO_Port, KEY3_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_1 + 2);
    } else if (HAL_GPIO_ReadPin(KEY4_GPIO_Port, KEY4_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_1 + 3);
    } else if (HAL_GPIO_ReadPin(KEY5_GPIO_Port, KEY5_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_A);
    } else if (HAL_GPIO_ReadPin(KEY6_GPIO_Port, KEY6_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_A + 1);
    } else if (HAL_GPIO_ReadPin(KEY7_GPIO_Port, KEY7_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_A + 2);
    } else if (HAL_GPIO_ReadPin(KEY8_GPIO_Port, KEY8_Pin) == GPIO_PIN_RESET) {
      hid_keyboard_test(0, HID_KBD_USAGE_A + 3);
    } else {
      hid_keyboard_test(0, 0x00);
    }
    /* 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};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48;
  RCC_OscInitStruct.HSI48State = RCC_HSI48_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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI48;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB|RCC_PERIPHCLK_USART1;
  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;

  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief USART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

/**
  * @brief USB Initialization Function
  * @param None
  * @retval None
  */
static void MX_USB_PCD_Init(void)
{

  /* USER CODE BEGIN USB_Init 0 */
  return;
  /* USER CODE END USB_Init 0 */

  /* USER CODE BEGIN USB_Init 1 */

  /* USER CODE END USB_Init 1 */
  hpcd_USB_FS.Instance = USB;
  hpcd_USB_FS.Init.dev_endpoints = 8;
  hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
  hpcd_USB_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
  hpcd_USB_FS.Init.low_power_enable = DISABLE;
  hpcd_USB_FS.Init.lpm_enable = DISABLE;
  hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
  if (HAL_PCD_Init(&hpcd_USB_FS) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USB_Init 2 */

  /* USER CODE END USB_Init 2 */

}

/**
  * @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_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, LED4_Pin|LED3_Pin|LED2_Pin|LED1_Pin
                          |LED5_Pin|LED6_Pin|LED7_Pin|LED8_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(PIR_GPIO_Port, PIR_Pin, GPIO_PIN_SET);

  /*Configure GPIO pins : KEY8_Pin KEY7_Pin KEY6_Pin KEY5_Pin
                           KEY1_Pin KEY2_Pin KEY3_Pin KEY4_Pin */
  GPIO_InitStruct.Pin = KEY8_Pin|KEY7_Pin|KEY6_Pin|KEY5_Pin
                          |KEY1_Pin|KEY2_Pin|KEY3_Pin|KEY4_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : LED4_Pin LED3_Pin LED2_Pin LED1_Pin
                           LED5_Pin LED6_Pin LED7_Pin LED8_Pin */
  GPIO_InitStruct.Pin = LED4_Pin|LED3_Pin|LED2_Pin|LED1_Pin
                          |LED5_Pin|LED6_Pin|LED7_Pin|LED8_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);

  /*Configure GPIO pin : PIR_Pin */
  GPIO_InitStruct.Pin = PIR_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(PIR_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : RELAY4_Pin */
  GPIO_InitStruct.Pin = RELAY4_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(RELAY4_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : RELAY3_Pin RELAY2_Pin RELAY1_Pin */
  GPIO_InitStruct.Pin = RELAY3_Pin|RELAY2_Pin|RELAY1_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/* 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 */