CHJ/user/MCU/lhl_systemclock.c

#include "../main/SystemInclude.h" 

 /**
  * @brief ϵͳʱ<EFBFBD>ӳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @note <EFBFBD><EFBFBD><EFBFBD><EFBFBD>оƬʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>(HSI)<EFBFBD><EFBFBD>Ϊϵͳʱ<EFBFBD><EFBFBD>Դ
  */
void SystemClockConfiguration(void)
{ 
    RCC_ClockInitTypeDef Clock_InitStructure;
    Clock_InitStructure.SYSCLKSource = RCC_SYSCLK_SRC_HSI_DIV2; // SYSCLK = 32M/2 = 16MHz
    Clock_InitStructure.AHBCLKDivider = RCC_SYSCLK_DIV2;        // PCLK = SYSCLK/4 = 4MHz
    Clock_InitStructure.APB1CLKDivider = RCC_HCLK_DIV1;         // PCLK1 = HCLK
    Clock_InitStructure.APB2CLKDivider = RCC_HCLK_DIV1;         // PCKL2 = HCLK
    if (LHL_RCC_ClockConfig(&Clock_InitStructure, LHL_NRM_TIMEOUT) != LHL_OK)
    {
        while(1);                                               // Error Handler
    }
}


void System_MCO_Config(void)
{
	GPIO_InitTypeDef GPIO_InitStruct;
	#if 0 //set p2.2 is MCO
	GPIO_InitStruct.Pin = GPIO_PIN_2;               
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Current = GPIO_CURRENT_16mA;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.SchmittTrigger = ENABLE;
	GPIO_InitStruct.Alternate = GPIO2_2_AF_ECLKOUT; // AFΪ 
	LHL_GPIO_Init(pGPIO2, &GPIO_InitStruct);  

	#endif
	#if 1 //set p0.4 is ECLKOUT
	GPIO_InitStruct.Pin = GPIO_PIN_4;               
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Current = GPIO_CURRENT_16mA;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.SchmittTrigger = ENABLE;
	GPIO_InitStruct.Alternate = GPIO0_4_AF_ECLKOUT; // AFΪ 
	LHL_GPIO_Init(pGPIO0, &GPIO_InitStruct); 
	#endif


/**  RCC_MCOSOURCE_LSI   
  *  RCC_MCOSOURCE_SYSCLK
  *  RCC_MCOSOURCE_HSI   
  *  RCC_MCOSOURCE_HSE
  *  RCC_MCOSOURCE_PLL_DIV2
  *  RCC_MCOSOURCE_PCLK1 
  *  RCC_MCOSOURCE_PCLK2 
  *  RCC_MCOSOURCE_HCLK  	*/
	LHL_RCC_MCOConfig(RCC_MCOSOURCE_PCLK1);//ѡ<><D1A1><EFBFBD><EFBFBD>ʼʱ<CABC><CAB1>Դ
}











 
void disable_interrupts(void)
{
  __disable_irq();  
}

void enable_interrupts(void)
{
  __enable_irq();  
}
 
void ResetSystem(void)
{
}