/**
  ******************************************************************************
  * @file    FreeRTOS/FreeRTOS_ThreadCreation/Src/main.c
  * @author  MCD Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2018 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.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "cmsis_os.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
osThreadId LEDThread1Handle, LEDThread2Handle;

/* Private function prototypes -----------------------------------------------*/
static void LED_Thread1(void const *argument);
static void LED_Thread2(void const *argument);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);

/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{

  /* Enable the CPU Cache */
  CPU_CACHE_Enable();

  /* STM32F7xx HAL library initialization:
       - Configure the Flash ART accelerator on ITCM interface
       - Configure the Systick to generate an interrupt each 1 msec
       - Set NVIC Group Priority to 4
       - Low Level Initialization
     */
  HAL_Init();  
  
  /* Configure the system clock to 216 Mhz */
  SystemClock_Config();
  
  /* Initialize LEDs */
  BSP_LED_Init(LED_RED);
  BSP_LED_Init(LED_GREEN);

  /* Thread 1 definition */
  osThreadDef(LED_RED, LED_Thread1, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
  
  /* Thread 2 definition */
  osThreadDef(LED_GREEN, LED_Thread2, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
  
  /* Start thread 1 */
  LEDThread1Handle = osThreadCreate(osThread(LED_RED), NULL);
  
  /* Start thread 2 */
  LEDThread2Handle = osThreadCreate(osThread(LED_GREEN), NULL);
  
  /* Start scheduler */
  osKernelStart();
  
  /* We should never get here as control is now taken by the scheduler */
  for(;;);
}

/**
  * @brief  Toggle LED_RED thread
  * @param  Thread not used
  * @retval None
  */
static void LED_Thread1(void const *argument)
{
  uint32_t count = 0;
  (void) argument;
  
  for(;;)
  {
    count = osKernelSysTick() + 6000;
    
    /* Toggle LED_RED every 200 ms for 6 s */
    while (count > osKernelSysTick())
    {
      BSP_LED_Toggle(LED_RED);
      
      osDelay(200);
    }
    
    /* Turn off LED_RED */
    BSP_LED_Off(LED_RED);
    
    /* Suspend Thread 1 */
    osThreadSuspend(NULL);
    
    count = osKernelSysTick() + 6000;
    
    /* Toggle LED_RED every 400 ms for 6 s */
    while (count > osKernelSysTick())
    {
      BSP_LED_Toggle(LED_RED);
      
      osDelay(400);
    }
    
    /* Resume Thread 2 */
    osThreadResume(LEDThread2Handle); 
  }
}

/**
  * @brief  Toggle LED_GREEN thread
  * @param  argument not used
  * @retval None
  */
static void LED_Thread2(void const *argument)
{
  uint32_t count;
  (void) argument;
  
  for(;;)
  {
    count = osKernelSysTick() + 12000;
    
    /* Toggle LED_GREEN every 500 ms for 12 s */
    while (count > osKernelSysTick())
    {
      BSP_LED_Toggle(LED_GREEN);
      
      osDelay(500);
    }
    
    /* Turn off LED_GREEN */
    BSP_LED_Off(LED_GREEN);
    
    /* Resume Thread 1 */
    osThreadResume(LEDThread1Handle);
    
    /* Suspend Thread 2 */
    osThreadSuspend(NULL);  
  }
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follow : 
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 216000000
  *            HCLK(Hz)                       = 216000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 4
  *            APB2 Prescaler                 = 2
  *            HSE Frequency(Hz)              = 25000000
  *            PLL_M                          = 25
  *            PLL_N                          = 432
  *            PLL_P                          = 2
  *            PLL_Q                          = 9
  *            VDD(V)                         = 3.3
  *            Main regulator output voltage  = Scale1 mode
  *            Flash Latency(WS)              = 7
  * @param  None
  * @retval None
  */
static void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_OscInitTypeDef RCC_OscInitStruct;

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLM = 25;
  RCC_OscInitStruct.PLL.PLLN = 432;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 8;

  HAL_RCC_OscConfig(&RCC_OscInitStruct);
  
  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 
     clocks dividers */
  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;  
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;  
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);

}


#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,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {}
}
#endif

/**
  * @brief  CPU L1-Cache enable.
  * @param  None
  * @retval None
  */
static void CPU_CACHE_Enable(void)
{
  /* Enable I-Cache */
  SCB_EnableICache();

  /* Enable D-Cache */
  SCB_EnableDCache();
}