/*----------------------------------------------------------------------------
 * DBG
 *---------------------------------------------------------------------------*/
 #include "stm32f7xx_hal.h"
#include "RTE_Components.h"
#include  CMSIS_device_header
#include "cmsis_os2.h"
#include <stdio.h>

#ifdef RTE_Compiler_EventRecorder
#include "EventRecorder.h"
#endif

osThreadId_t thread1,thread2,thread3,thread4;

void Thread_1 (void *argument);
void Thread_2 (void *argument);
void Thread_3 (void *argument);
void Thread_4 (void *argument);

const osThreadAttr_t thread1_attr = {
  .stack_size = 1024,
  .priority = osPriorityNormal,
};
const osThreadAttr_t thread2_attr = {
  .stack_size = 1024,
  .priority = osPriorityBelowNormal4,
};
const osThreadAttr_t thread3_attr = {
  .stack_size = 4096,
  .priority = osPriorityBelowNormal,
};
const osThreadAttr_t thread4_attr = {
  .stack_size = 256,
  .priority = osPriorityLow,
};

//------------------------------------------------------------------------------
// Setup system clock to 216MHz
//------------------------------------------------------------------------------
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 = 9;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);

  /* Activate the OverDrive to reach the 216 MHz Frequency */
  HAL_PWREx_EnableOverDrive();

  /* 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);
}

/*----------------------------------------------------------------------------
 * Factorial function calculation
 *---------------------------------------------------------------------------*/
double Fact(double number)
{
  if(number <= 1)
    return 1;
  return (number * Fact(number-1));
}

/*----------------------------------------------------------------------------
 * Thread 1
 *---------------------------------------------------------------------------*/
void Thread_1 (void *argument) {
  uint32_t x = 1;
  double result;
  for (;;)
  {
    result = Fact(x);
    printf("Fact of %d is %f\r\n",x,result);
    x++;
    osDelay(200);
  }
}

/*----------------------------------------------------------------------------
 * Thread 2
 *---------------------------------------------------------------------------*/
void Thread_2 (void *argument) {
  osThreadState_t state;
  for (;;)
  {
    osDelay(20);
    state = osThreadGetState(Thread_4);
    if(state == osThreadBlocked)
    {
      osThreadResume(Thread_4);
    }
  }
}

/*----------------------------------------------------------------------------
 * Thread 3
 *---------------------------------------------------------------------------*/
void Thread_3 (void *argument) {
  osThreadState_t state;
  for (;;)
  {
    osDelay(50);
    state = osThreadGetState(Thread_4);
    if(state != osThreadBlocked)
    {
      osThreadSuspend(Thread_4);
    }
  }
}

/*----------------------------------------------------------------------------
 * Thread 4
 *---------------------------------------------------------------------------*/
void Thread_4 (void *argument) {
  char * str = "Flag is:0";
  uint8_t flag = '0';
  for (;;)
  {
    if(flag == '0')
    {
      flag = '1';
    }
    else
    {
      flag = '0';
    }
    str[8]= flag;
    puts(str);
    osDelay(100);
  }
}

int main (void) {
  // System Initialization
  SystemClock_Config();
  SystemCoreClockUpdate();

#ifdef RTE_Compiler_EventRecorder
  // Initialize and start Event Recorder
  EventRecorderInitialize(EventRecordAll, 1U);
#endif

  osKernelInitialize();
  thread1 = osThreadNew(Thread_1, NULL,  &thread1_attr);
  thread2 = osThreadNew(Thread_2, NULL,  &thread2_attr);
  thread3 = osThreadNew(Thread_3, NULL,  &thread3_attr);
  thread4 = osThreadNew(Thread_4, NULL,  &thread4_attr);
  osKernelStart();
  for (;;) {}
}