/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define SIZE 1024*32
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
GPIO_PinState pinstate;
UART_HandleTypeDef uart = {0};
volatile unsigned int abstime_ms = 0;
volatile unsigned int zakasnitev = 500;

volatile uint8_t sporocilo[10];
extern volatile uint8_t sprejeto;

uint8_t buffer[] = "LED 1 ON";

uint8_t izvor[SIZE];
uint8_t ponor[SIZE];

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);

/* USER CODE BEGIN PFP */
void myDelay(unsigned int zakasnitev);
void start_timer();
void stop_timer();
uint32_t get_time();
/* 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 */
  /* USER CODE BEGIN 2 */

  __HAL_RCC_GPIOB_CLK_ENABLE();

  GPIO_InitTypeDef init_structure;
  init_structure.Pin = GPIO_PIN_10 | GPIO_PIN_11;
  init_structure.Mode = GPIO_MODE_AF_PP;
  init_structure.Pull = GPIO_NOPULL;
  init_structure.Speed = GPIO_SPEED_FREQ_LOW;
  init_structure.Alternate = GPIO_AF7_USART3;
  HAL_GPIO_Init(GPIOB, &init_structure);

  __HAL_RCC_USART3_CLK_ENABLE();
  uart.Instance = USART3;
  uart.Init.BaudRate = 115200;
  uart.Init.WordLength = UART_WORDLENGTH_8B;
  uart.Init.StopBits = UART_STOPBITS_1;
  uart.Init.Parity = UART_PARITY_NONE;
  uart.Init.Mode = UART_MODE_TX_RX;
  uart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  HAL_UART_Init(&uart);
  // Prekini me, ko RDR Not empty:
  __HAL_UART_ENABLE_IT(&uart, UART_IT_RXNE);
  // Omogoči prekinitve iz UART3 na NVIC:
  HAL_NVIC_SetPriority(USART3_IRQn, 12, 0);
  HAL_NVIC_EnableIRQ(USART3_IRQn);



  HAL_GPIO_WritePin(GPIOD, GPIO_PIN_3, GPIO_PIN_RESET);
  HAL_GPIO_WritePin(GPIOD, GPIO_PIN_3, GPIO_PIN_SET);

  HAL_GPIO_WritePin(GPIOI, GPIO_PIN_13, GPIO_PIN_RESET);
  HAL_GPIO_WritePin(GPIOI, GPIO_PIN_13, GPIO_PIN_SET);


  pinstate = GPIO_PIN_SET;

  for(int i=0; i<SIZE;i++){
	  izvor[i] = 0xfe;
  	  ponor[i] = 0;
  }


  start_timer();
  for(int i=0; i<SIZE;i++){
	  ponor[i] = izvor[i];
  }
  stop_timer();
  uint32_t izmerjen_cas_v_us_CPE = get_time();



  __HAL_RCC_DMA1_CLK_ENABLE();

  DMA_HandleTypeDef dma1_struct = {0};

  dma1_struct.Instance = DMA1_Stream5;
  dma1_struct.Init.Request = DMA_REQUEST_MEM2MEM;
  dma1_struct.Init.Direction = DMA_MEMORY_TO_MEMORY;
  dma1_struct.Init.PeriphInc = DMA_PINC_ENABLE;
  dma1_struct.Init.MemInc = DMA_MINC_ENABLE;
  // TO DO: Poskusi še DMA_MDATAALIGN_WORD
  //dma1_struct.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE;
  //dma1_struct.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
  dma1_struct.Init.PeriphDataAlignment = DMA_MDATAALIGN_WORD;
  dma1_struct.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
  dma1_struct.Init.Mode = DMA_NORMAL;
  dma1_struct.Init.Priority = DMA_PRIORITY_LOW;
  dma1_struct.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
  // TODO: poskusi še ostale:
  dma1_struct.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
  HAL_DMA_Init(&dma1_struct);

  /* Ta funkcija:
   * 1. vpiše izvorni naslov v PAR/MAR register
   * 2. vpiše pšonorni naslov v PAR/MAR
   * 3. vpiše število podatkov, ki jih je treba prenesti v NDTR
   * 4. aktivira DMA REQ signal
   */

  for(int i=0; i<SIZE;i++){
  	  izvor[i] = 0xab;
      ponor[i] = 0;
    }


  start_timer();
  //HAL_DMA_Start(&dma1_struct, (uint32_t)izvor, (uint32_t)ponor, SIZE);
  // Če boste prenašali word po word (DATAALIGN_WORD)
  HAL_DMA_Start(&dma1_struct, (uint32_t)izvor, (uint32_t)ponor, SIZE/4);
  HAL_DMA_PollForTransfer(&dma1_struct, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
  stop_timer();
  uint32_t izmerjen_cas_v_us_DMA = get_time();





  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
	  HAL_GPIO_TogglePin(GPIOI, GPIO_PIN_13);
	  myDelay(zakasnitev);

	  if (sprejeto == 1){
		  if (sporocilo[7] == 'N'){
			  // Prizgi
			  if(sporocilo[4] == '1') {
				  HAL_UART_Transmit(&uart, buffer, sizeof(buffer), HAL_MAX_DELAY);
			  }
			  else if(sporocilo[4] == '2'){

			  }
			  else if(sporocilo[4] == '3'){

			  }
		  }
		  else if (sporocilo[7] == 'F'){
			  // ugasni
			  if(sporocilo[4] == '1') {

			  }
			  else if(sporocilo[4] == '2'){

			  }
			  else if(sporocilo[4] == '3'){

			  }
}
		  sprejeto = 0;
	  }

/*
	  pinstate = HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13);

	  if (pinstate == GPIO_PIN_SET) HAL_GPIO_TogglePin(GPIOI, GPIO_PIN_13);
	  while(pinstate == GPIO_PIN_SET){
	  	pinstate = HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13);
	  }
	  */

    /* 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_SCALE3);

  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_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  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_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */


void myDelay(unsigned int zakasnitev){
	unsigned int trenutni_cas = abstime_ms;
	unsigned int novi_cas = trenutni_cas + zakasnitev;

	while (abstime_ms < novi_cas) {}
}


void start_timer() {
  __HAL_RCC_TIM2_CLK_ENABLE();
  TIM_HandleTypeDef timer = {0};
  timer.Instance = TIM2;
  timer.Init.CounterMode = TIM_COUNTERMODE_UP;
  timer.Init.Period = 100000000;
  timer.Init.Prescaler = 64 -1;
  HAL_TIM_Base_Init(&timer);

  HAL_TIM_Base_Start(&timer);
  __HAL_TIM_SetCounter(&timer, 0);
}

void stop_timer() {
  TIM_HandleTypeDef timer = {0};
  timer.Instance = TIM2;
  HAL_TIM_Base_Stop(&timer);
}

uint32_t get_time() {
  TIM_HandleTypeDef timer = {0};
  timer.Instance = TIM2;
  return __HAL_TIM_GetCounter(&timer);
}

void HAL_MspInit(void)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_MspInit could be implemented in the user file
   */
	__HAL_RCC_SYSCFG_CLK_ENABLE();

	__HAL_RCC_GPIOC_CLK_ENABLE();
	  __HAL_RCC_GPIOD_CLK_ENABLE();
	  __HAL_RCC_GPIOI_CLK_ENABLE();
	  __HAL_RCC_GPIOJ_CLK_ENABLE();

	  GPIO_InitTypeDef init = {0};
	  init.Pin = GPIO_PIN_13;
	  init.Mode = GPIO_MODE_IT_RISING;
	  init.Pull = GPIO_NOPULL;
	  HAL_GPIO_Init(GPIOC, &init);

	  HAL_NVIC_SetPriority(EXTI15_10_IRQn, 12, 0);
	  HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);


	  init.Pin = GPIO_PIN_3;
	  init.Mode = GPIO_MODE_OUTPUT_PP;
	  init.Pull = GPIO_NOPULL;
	  init.Speed = GPIO_SPEED_FREQ_LOW;
	  HAL_GPIO_Init(GPIOD, &init);

	  init.Pin = GPIO_PIN_2;
	  init.Mode = GPIO_MODE_OUTPUT_PP;
	  init.Pull = GPIO_NOPULL;
	  init.Speed = GPIO_SPEED_FREQ_LOW;
	  HAL_GPIO_Init(GPIOJ, &init);

	  init.Pin = GPIO_PIN_13;
	  init.Mode = GPIO_MODE_OUTPUT_PP;
	  init.Pull = GPIO_NOPULL;
	  init.Speed = GPIO_SPEED_FREQ_LOW;
	  HAL_GPIO_Init(GPIOI, &init);
}
/* 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 */