//
// System: initialize core system peripherals
//

#include "stm32f3xx_hal.h"


// Configure and start system clocks
void sysclock_init(void)
{
	__SYSCFG_CLK_ENABLE();

	HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);

	HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);



	RCC_OscInitTypeDef RCC_OscInitStruct;
	  RCC_ClkInitTypeDef RCC_ClkInitStruct;
	  RCC_PeriphCLKInitTypeDef PeriphClkInit;

	  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
	  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
	  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
	  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
	  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL3;
	  HAL_RCC_OscConfig(&RCC_OscInitStruct);

	  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
	                              |RCC_CLOCKTYPE_PCLK1;
	  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
	  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV2;
	  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
	  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
	  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

	  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB|RCC_PERIPHCLK_ADC1;
	  PeriphClkInit.USBClockSelection = RCC_USBPLLCLK_DIV1;
	  PeriphClkInit.Adc1ClockSelection = RCC_ADC1PLLCLK_DIV1;
	  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

	  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

	  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

	  /* SysTick_IRQn interrupt configuration */
	  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);



	__DMA1_CLK_ENABLE();
}