//
// sysclk: Initialize and start system clocks
//

#include "config.h"
#include "system/sysclk.h"
#include "stm32f0xx_hal.h"


// Initialize system clocks and systick
void sysclock_init(void)
{
	/*
	RCC_OscInitTypeDef RCC_OscInitStruct;
	RCC_ClkInitTypeDef RCC_ClkInitStruct;
	RCC_PeriphCLKInitTypeDef PeriphClkInit;

	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
	RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
	RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL4;
	RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV2;
	HAL_RCC_OscConfig(&RCC_OscInitStruct);

	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV2;
	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);

	PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
	PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
	HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

	HAL_RCC_MCOConfig(RCC_MCO, RCC_MCOSOURCE_SYSCLK, RCC_MCO_DIV1);

	__SYSCFG_CLK_ENABLE();

	// Enable SysTick interrupt
	HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
	*/


	  RCC_OscInitTypeDef RCC_OscInitStruct;
	  RCC_ClkInitTypeDef RCC_ClkInitStruct;
	  RCC_PeriphCLKInitTypeDef PeriphClkInit;

	    /**Initializes the CPU, AHB and APB busses clocks
	    */
	  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
	  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
	  RCC_OscInitStruct.HSICalibrationValue = 16;
	  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
	  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL8;
	  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
	  HAL_RCC_OscConfig(&RCC_OscInitStruct);

	    /**Initializes the CPU, AHB and APB busses clocks
	    */
	  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_DIV1;

	  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

	  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
	  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
	  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
	    /**Configure the Systick interrupt time
	    */
	  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

	    /**Configure the Systick
	    */
	  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

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

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