本工程板级支持包文件适用于野火stm32f429 开发板。

bsp_clk.c

/**
  ******************************************************************************
  * @file    bsp_clk.c
  * @author  Waao
  * @version V1.0.0
  * @date    21-Dec-2018
  * @brief   This file contains some board support package\'s functions for the CLK.
  *            
  ******************************************************************************
  * @attention
  *
  * None
	*
  ******************************************************************************
  */

#include <bsp_clk.h>

/**
  * @brief  Initialize the SYSCLK powered by HSE
  * @note   None
  * @param  m: VOC input clock\'s frequency division factor.  
	*					n: VOC output clock\'s frequency doubling factor.
	*					p: PLLCLK clock\'s frequency division factor.
	*					q: OTG, FS, SDIO and RNG clock\'s frequency division factor.
  * @retval None
  */
void HSE_SetSysClock(uint32_t m, uint32_t n, uint32_t p, uint32_t q)
{
	__IO uint32_t HSEStartUpStatus = 0;
	
	//Enable the HSE, open the external crystal oscillator
	RCC_HSEConfig(RCC_HSE_ON);
	
	//Waiting the HSE to be stable
	HSEStartUpStatus = RCC_WaitForHSEStartUp();
	
	if(HSEStartUpStatus == SUCCESS)
	{
		RCC->APB1ENR |= RCC_APB1ENR_PWREN;
		PWR->CR |= PWR_CR_VOS;
		
		//HCLK = SYSCLK / 1
		RCC_HCLKConfig(RCC_SYSCLK_Div1);
		//PCLK2 = HCLK / 2
		RCC_PCLK2Config(RCC_HCLK_Div2);
		//PCLK1 = HCLK / 4
		RCC_PCLK1Config(RCC_HCLK_Div4);
		
		//Configure the PLL
		RCC_PLLConfig(RCC_PLLSource_HSE, m, n, p, q);
		//Enable the PLL
		RCC_PLLCmd(ENABLE);
		
		//Waiting the PLL to be stable
		while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
		{
		}
		
		/*--------------------------------------------*/
		//Open the OVER-RIDE mode to reach a higher frequency
		PWR->CR |= PWR_CR_ODEN;
		while((PWR->CSR & PWR_CSR_ODRDY) == 0)
		{
		}
		PWR->CR |= PWR_CR_ODSWEN;
		while((PWR->CSR & PWR_CSR_ODSWRDY) == 0)
		{
		}
		
		//Configure the FLASH
		FLASH->ACR = FLASH_ACR_PRFTEN
								|FLASH_ACR_ICEN
								|FLASH_ACR_DCEN
								|FLASH_ACR_LATENCY_5WS;
		/*---------------------------------------------*/
		//Change the clock of the PLL to SYSCLK when PLL to be stable
		RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
		
		while(RCC_GetSYSCLKSource() != 0x08)
		{
		}
	}
	else
	{
		while(1)
		{
		}
	}
}


/**
  * @brief  Initialize the SYSCLK powered by HSI
  * @note   None
  * @param  m: VOC input clock\'s frequency division factor.  
	*					n: VOC output clock\'s frequency doubling factor.
	*					p: PLLCLK clock\'s frequency division factor.
	*					q: OTG, FS, SDIO and RNG clock\'s frequency division factor.
  * @retval None
  */
void HSI_SetSysClock(uint32_t m, uint32_t n, uint32_t p, uint32_t q)
{
	__IO uint32_t HSIStartUpStatus = 0;
	
	//Initialize the RCC parameter to reset status
	RCC_DeInit();
	
	//Enable the HSI, HSI=16M
	RCC_HSICmd(ENABLE);
	
	//Waiting the HSI to be ready
	HSIStartUpStatus = RCC->CR & RCC_CR_HSIRDY;
	
	//Continue to run only when the HSI to be ready
	if(HSIStartUpStatus == RCC_CR_HSIRDY)
	{
		RCC->APB1ENR |= RCC_APB1ENR_PWREN;
		PWR->CR |= PWR_CR_VOS;
		
		//HCLK = SYSCLK / 1
		RCC_HCLKConfig(RCC_SYSCLK_Div1);
		//PCLK2 = HCLK / 2
		RCC_PCLK2Config(RCC_HCLK_Div2);
		//PCLK1 = HCLK / 4
		RCC_PCLK1Config(RCC_HCLK_Div4);
		
		//Configure the PLL
		RCC_PLLConfig(RCC_PLLSource_HSI, m, n, p, q);
		//Enable the PLL
		RCC_PLLCmd(ENABLE);
		
		//Waiting the PLL to be stable
		while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
		{
		}
		
		/*--------------------------------------------*/
		//Open the OVER-RIDE mode to reach a higher frequency
		PWR->CR |= PWR_CR_ODEN;
		while((PWR->CSR & PWR_CSR_ODRDY) == 0)
		{
		}
		PWR->CR |= PWR_CR_ODSWEN;
		while((PWR->CSR & PWR_CSR_ODSWRDY) == 0)
		{
		}
		
		//Configure the FLASH
		FLASH->ACR = FLASH_ACR_PRFTEN
								|FLASH_ACR_ICEN
								|FLASH_ACR_DCEN
								|FLASH_ACR_LATENCY_5WS;
		/*---------------------------------------------*/
		//Change the clock of the PLL to SYSCLK when PLL to be stable
		RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
		
		while(RCC_GetSYSCLKSource() != 0x08)
		{
		}
	}
	else
	{
		while(1)
		{
		}
	}
}


/**
  * @brief  Configure the MCO1 output the clock signal
  * @note   None
  * @param  None  
  * @retval None
  */
void MCO1_GPIO_Config(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_AHB1PeriphClockCmd(MCO1_CLK_PORT, ENABLE);
	
	GPIO_InitStructure.GPIO_Pin = MCO1_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	
	GPIO_Init(MCO1_PORT, &GPIO_InitStructure);
}

/**
  * @brief  Configure the MCO2 output the clock signal
  * @note   None
  * @param  None  
  * @retval None
  */
void MCO2_GPIO_Config(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_AHB1PeriphClockCmd(MCO2_CLK_PORT, ENABLE);
	
	GPIO_InitStructure.GPIO_Pin = MCO2_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	
	GPIO_Init(MCO2_PORT, &GPIO_InitStructure);
}

bsp_clk.h

/**
  ******************************************************************************
  * @file    bsp_clk.h
  * @author  Waao
  * @version V1.0.0
  * @date    21-Dec-2018
  * @brief   This file contains some board support package\'s definition for the CLK.
  *            
  ******************************************************************************
  * @attention
  *
  * None
	*
  ******************************************************************************
  */
#ifndef __BSP_LED_H_
#define __BSP_LED_H_


#include <stm32f4xx.h>

#define PLL_M 25
#define PLL_N 360
#define PLL_P 2
#define PLL_Q 7

#define MCO1_PIN       GPIO_Pin_8
#define MCO1_PORT      GPIOA
#define MCO1_CLK_PORT  RCC_AHB1Periph_GPIOA

#define MCO2_PIN       GPIO_Pin_9
#define MCO2_PORT      GPIOC
#define MCO2_CLK_PORT  RCC_AHB1Periph_GPIOC

void HSE_SetSysClock(uint32_t m, uint32_t n, uint32_t p, uint32_t q);
void HSI_SetSysClock(uint32_t m, uint32_t n, uint32_t p, uint32_t q);
void MCO1_GPIO_Config(void);
void MCO2_GPIO_Config(void);


#endif