/* USER CODE BEGIN Header */
/**
    ******************************************************************************
    * @file                     : main.c
    * @brief                    : Main program body
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                                                opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
/* 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 */

/* USER CODE END PD */

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

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void reset_two_bits(volatile uint32_t *address, uint8_t p);
void set_bit(volatile uint32_t *address, uint8_t p);
void set_bit_16(volatile uint16_t *address, uint8_t p);
void set_two_bits_to(volatile uint32_t *address, uint8_t p, uint8_t n);
void button_port_clock_on();
void led_port_clock_on();
void button_init();
void led_init();
void led_on(uint8_t i);
void led_off(uint8_t i);
uint8_t read_button();
void delay();
/* 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 */

    // turn on required peripherals
    // use port clock on functions
    // TODO

    // init required peripherals
    // use init functions
    // TODO

    /* USER CODE END 2 */

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

        // TODO READ BUTTON AND START LED SEQUENCE

        /* 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};

    /** Configure the main internal regulator output voltage 
    */
    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    /** 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();
    }
}

/* USER CODE BEGIN 4 */

void reset_two_bits(volatile uint32_t *address, uint8_t p)
{
    // reset two bits (p and p+1) in a 32 bit register
    // TODO
}

void set_bit(volatile uint32_t *address, uint8_t p)
{
    // set bit p in a 32 bit register
    // TODO
}

void set_bit_16(volatile uint16_t *address, uint8_t p)
{
    // set bit p in a 16 bit register
    // TODO
}

void set_two_bits_to(volatile uint32_t *address, uint8_t p, uint8_t n)
{
    // set two bits (p and p+1) to value n in a 32 bit register
    // TODO
}

void button_port_clock_on()
{
    // turn on the button port clock
    // TODO
}

void led_port_clock_on()
{
    // turn on the led port clock
    // TODO
}

void button_init()
{
    // init the button
    // TODO
}

void led_init()
{
    // init leds
    // TODO
}

void led_on(uint8_t i)
{
    // turn led number i on
    // TODO
}

void led_off(uint8_t i)
{
    // turn led number i off
    // TODO
}

uint8_t read_button()
{
    // get button state
    // TODO
}

void delay()
{
    // hardcoded delay
    // TODO
}

/* 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 */

    /* 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,
         tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/