#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stm32f1xx_hal.h>

// Set STM32F103 LED RED (PC13)
#define LED_PORT_C               GPIOC
#define LED_PORT_A               GPIOA
#define LED_PIN_C13              GPIO_PIN_13
#define LED_PIN_C14              GPIO_PIN_14
#define LED_PIN_C15              GPIO_PIN_15
#define LED_PIN_A0               GPIO_PIN_0
#define LED_PIN_A1               GPIO_PIN_1
#define BTN_PIN_A2               GPIO_PIN_2
#define BTN_PIN_A3               GPIO_PIN_3
#define LED_PORT_CLK_ENABLE     __HAL_RCC_GPIOC_CLK_ENABLE



void Error_Handler(void);
void SystemClock_Config(void);
static void MX_USART2_UART_Init(void);
void SysTick_Handler(void)
{
  static int currentState = 1;
  static int delayCounter = 0;

  HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15, GPIO_PIN_RESET);
  HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1, GPIO_PIN_RESET);

  if (currentState == 0)
  {
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13, GPIO_PIN_SET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C14, GPIO_PIN_SET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C15, GPIO_PIN_SET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0, GPIO_PIN_SET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A1, GPIO_PIN_SET);
  }
  else if (currentState == 1)
  {
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C14, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C15, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A1, GPIO_PIN_RESET);
  }

  if (HAL_GPIO_ReadPin(LED_PORT_A, BTN_PIN_A2))
  {
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13, GPIO_PIN_SET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C14, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C15, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A1, GPIO_PIN_RESET);
  }

  delayCounter++;
  if (delayCounter >= 1000)
  {
    delayCounter = 0;
    currentState++;
    if (currentState > 1)
    {
      currentState = 0;
    }
  }
}
void initGPIO()
{ GPIO_InitTypeDef GPIO_Config;

  GPIO_Config.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_Config.Pull = GPIO_NOPULL;
  GPIO_Config.Speed = GPIO_SPEED_FREQ_HIGH;

  GPIO_Config.Pin = LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 | LED_PIN_A0 | LED_PIN_A1;

  LED_PORT_CLK_ENABLE();
  HAL_GPIO_Init(LED_PORT_C, &GPIO_Config);
  HAL_GPIO_Init(LED_PORT_A, &GPIO_Config);

  __HAL_RCC_GPIOA_CLK_ENABLE();
}

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  initGPIO();

  while (1)
  {
    /* HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13, GPIO_PIN_SET);
    HAL_Delay(100);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 , GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1 , GPIO_PIN_RESET);

    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C14, GPIO_PIN_SET);
    HAL_Delay(100);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 , GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1 , GPIO_PIN_RESET);

    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C15, GPIO_PIN_SET);
    HAL_Delay(100);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 , GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1 , GPIO_PIN_RESET);

    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0, GPIO_PIN_SET);
    HAL_Delay(100);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 , GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1 , GPIO_PIN_RESET);

    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A1, GPIO_PIN_SET);
    HAL_Delay(100);
    HAL_GPIO_WritePin(LED_PORT_C, LED_PIN_C13 | LED_PIN_C14 | LED_PIN_C15 , GPIO_PIN_RESET);
    HAL_GPIO_WritePin(LED_PORT_A, LED_PIN_A0 | LED_PIN_A1 , GPIO_PIN_RESET); */
  }

  return 0;
}

//   @brief System Clock Configuration
//    @retval None
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /* Initializes the CPU, AHB and APB busses clocks */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  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 busses clocks */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
                                | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) Error_Handler();
}
void Error_Handler(void)
{  /* User can add his own implementation to report the HAL error return state */ }

#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 can add his own implementation to report the file name and line number,
    tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) /
}
#endif / USE_FULL_ASSERT */

//  @brief USART2 Initialization Function
//    @param None
//    @retval None