ARM常用函數的配置函數---重點(diǎn)積累

//Data：2011-11月

//功能：積累編程的思想與套路

本頁(yè)所包含的配置函數有：
void SysTick_Configuration(void)；
void GPIO_Configuration(void)；//端口引腳功能的配置
void EXTI_Configuration(void)；//配置外部中斷線(xiàn)
void NVIC_Configuration(void)；//配置中斷的優(yōu)先級、內部中斷向量
void RCC_Configuration(void)； //配置系統及其外設的時(shí)鐘
void IWDG_Configuration(void)；//看門(mén)狗的配置結構
voidTIM_Configuration(void)
voidADC_configuration();
void DMA_Configuration(void);
void DAC_Configuration(void);
//同時(shí)需要配置的結構體變量
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

*******//Cortex系統定時(shí)器（SysTick）*********************
*******************************************************
*******************************************************
void SysTick_Configuration(void)
{

//選擇系統定時(shí)器（SysTick）的時(shí)鐘源
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);

SysTick_SetReload(250000);

SysTick_CounterCmd(SysTick_Counter_Enable);

SysTick_ITConfig(ENABLE);
}
*********///GPIO的配置程序***************************************
******************************************************************
*******************************************************************
void GPIO_Configuration(void) void RCC_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
//中斷線(xiàn)路初始化
void EXTI_Configuration(void)
{

EXTI_InitStructure.EXTI_Line = EXTI_Line9;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

EXTI_InitStructure.EXTI_Line = EXTI_Line13;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
///嵌套中斷向量NVIC**********************************
/
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

//為EXTI_Line9使能并配置中斷向量

//為EXTI_Line0使能并配置中斷向量
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);
NVIC_InitStructure.NVIC_IRQChannel=EXTI9_5_IRQChannel;
NVIC_Init(&NVIC_InitStructure);

//為EXTI_Line9使能并配置中斷向量

//為EXTI_Line13使能并配置中斷向量
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);
NVIC_InitStructure.NVIC_IRQChannel=EXTI15_10_IRQChannel;
NVIC_Init(&NVIC_InitStructure);

}

********************************************************************
**************系統時(shí)鐘的配置RCC_Configuration**********************
void RCC_Configuration(void)
{

RCC_DeInit();

RCC_HSEConfig(RCC_HSE_ON);

HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{

RCC_HCLKConfig(RCC_SYSCLK_Div1);

RCC_PCLK2Config(RCC_HCLK_Div1);

RCC_PCLK1Config(RCC_HCLK_Div2);

FLASH_SetLatency(FLASH_Latency_2);

FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
*/
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

RCC_PLLCmd(ENABLE);

while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

while(RCC_GetSYSCLKSource() != 0x08)
{
}

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOB |RCC_APB2Periph_AFIO, ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);

}