/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2026 STMicroelectronics.
 * All rights reserved.
 *
 * Copyright (c) 2026 Georgy Moshkin <https://georgymoshkin.com>
 * 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.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

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

#include "app.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;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;

PCD_HandleTypeDef hpcd_USB_OTG_FS;

/* USER CODE BEGIN PV */

//#define IS_BOOTLOADER

/* 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_USB_OTG_FS_PCD_Init(void);
static void MX_USART1_UART_Init(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 */

	app_boot();

	/* 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_USB_OTG_FS_PCD_Init();
	MX_USART1_UART_Init();
	/* USER CODE BEGIN 2 */

	app_init(&huart1);

	/* USER CODE END 2 */

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

		app_loop();

		/* 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};

	/** Supply configuration update enable
	 */
	HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

	/** Configure the main internal regulator output voltage
	 */
	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);

	while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

	/** 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 = 1;
	RCC_OscInitStruct.PLL.PLLN = 120;
	RCC_OscInitStruct.PLL.PLLP = 2;
	RCC_OscInitStruct.PLL.PLLQ = 20;
	RCC_OscInitStruct.PLL.PLLR = 2;
	RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;
	RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
	RCC_OscInitStruct.PLL.PLLFRACN = 0;
	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_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
	RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
	RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
	RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
	RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
	RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
	RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;

	if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != 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.Init.ClockPrescaler = UART_PRESCALER_DIV1;
	huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_SWAP_INIT;
	huart1.AdvancedInit.Swap = UART_ADVFEATURE_SWAP_ENABLE;
	if (HAL_UART_Init(&huart1) != HAL_OK)
	{
		Error_Handler();
	}
	if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
	{
		Error_Handler();
	}
	if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
	{
		Error_Handler();
	}
	if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
	{
		Error_Handler();
	}
	/* USER CODE BEGIN USART1_Init 2 */

	/* USER CODE END USART1_Init 2 */

}

/**
 * @brief USB_OTG_FS Initialization Function
 * @param None
 * @retval None
 */
static void MX_USB_OTG_FS_PCD_Init(void)
{

	/* USER CODE BEGIN USB_OTG_FS_Init 0 */

	/* USER CODE END USB_OTG_FS_Init 0 */

	/* USER CODE BEGIN USB_OTG_FS_Init 1 */

	/* USER CODE END USB_OTG_FS_Init 1 */
	hpcd_USB_OTG_FS.Instance = USB_OTG_FS;
	hpcd_USB_OTG_FS.Init.dev_endpoints = 9;
	hpcd_USB_OTG_FS.Init.speed = PCD_SPEED_FULL;
	hpcd_USB_OTG_FS.Init.dma_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
	hpcd_USB_OTG_FS.Init.Sof_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.low_power_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.lpm_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.battery_charging_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.vbus_sensing_enable = DISABLE;
	hpcd_USB_OTG_FS.Init.use_dedicated_ep1 = DISABLE;
	if (HAL_PCD_Init(&hpcd_USB_OTG_FS) != HAL_OK)
	{
		Error_Handler();
	}
	/* USER CODE BEGIN USB_OTG_FS_Init 2 */

	/* USER CODE END USB_OTG_FS_Init 2 */

}

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

	/* DMA controller clock enable */
	__HAL_RCC_DMA1_CLK_ENABLE();

	/* DMA interrupt init */
	/* DMA1_Stream0_IRQn interrupt configuration */
	HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 0, 0);
	HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);
	/* DMA1_Stream1_IRQn interrupt configuration */
	HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 0, 0);
	HAL_NVIC_EnableIRQ(DMA1_Stream1_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_GPIOC_CLK_ENABLE();
	__HAL_RCC_GPIOH_CLK_ENABLE();
	__HAL_RCC_GPIOA_CLK_ENABLE();

	/*Configure GPIO pin Output Level */
	HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);

	/*Configure GPIO pin : PC13 */
	GPIO_InitStruct.Pin = GPIO_PIN_13;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
	HAL_GPIO_Init(GPIOC, &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 */
