stm32_通用定时器-时基单元

/*********************************************************************************************************
*
* File : main.c
* Hardware Environment: STM32F107VC
* Build Environment : RealView MDK-ARM Version: 4.20
* Version : V3.5.0
* By : 海鸥
* LED接口 ： LED1 -> PB0 , LED2 -> PB1 , LED3 -> PB14 , LED4 -> PB15
* 实验现象：1、 LED4以0.5s周期闪烁
* 2、 LED3以1s周期闪烁
* 3、 LED2以2s周期闪烁
* 4、 LED1以4s周期闪烁
*********************************************************************************************************/



#include "stm32f10x.h"
#include
#include
#define LED1 GPIO_Pin_0
#define LED2 GPIO_Pin_1
#define LED3 GPIO_Pin_14
#define LED4 GPIO_Pin_15
#define LED_ALL LED1|LED2|LED3|LED4

void Delay (uint32_t nCount);
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);

void TIM_Configuation(void);

int main(void)
{
RCC_Configuration();
GPIO_Configuration();
NVIC_Configuration();
TIM_Configuation();
while (1);
}


void RCC_Configuration(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB , ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
}
void GPIO_Configuration(void)
{

GPIO_InitTypeDef GPIO_InitStructure;
/*
* LED1 -> PB0 , LED2 -> PB1 , LED3 -> PB14 , LED4 -> PB15
*/
GPIO_InitStructure.GPIO_Pin = LED_ALL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);

}
void Delay (uint32_t nCount)
{
for(; nCount != 0; nCount--);
}

void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure; //定义数据结构体

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);//将中断矢量放到Flash的0地址

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//设置优先级配置的模式，详情请阅读原材料中的文章

//TIM
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}


void TIM_Configuation(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

TIM_TimeBaseStructure.TIM_Period = 65535;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

TIM_PrescalerConfig(TIM2,7199,TIM_PSCReloadMode_Immediate);
// TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
TIM_OCI

nitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_Pulse = 40000;
TIM_OC1Init(TIM2,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_Pulse = 20000;
TIM_OC2Init(TIM2,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_Pulse = 10000;
TIM_OC3Init(TIM2,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_Pulse = 5000;
TIM_OC4Init(TIM2,&TIM_OCInitStructure);

TIM_OC1PreloadConfig(TIM2,TIM_OCPreload_Disable);
TIM_OC2PreloadConfig(TIM2,TIM_OCPreload_Disable);
TIM_OC3PreloadConfig(TIM2,TIM_OCPreload_Disable);
TIM_OC4PreloadConfig(TIM2,TIM_OCPreload_Disable);
// TIM_ARRPreloadConfig(TIM2,ENABLE);

TIM_ClearITPendingBit(TIM2,TIM_IT_Update);//清楚溢出中断标志位
TIM_ITConfig(TIM2,TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4,ENABLE);
TIM_Cmd(TIM2,ENABLE);

}

/*************************************** END OF FILE *************************************/

/* stm32f10x_it.c 文件中添加如下程序*/

void TIM2_IRQHandler(void)
{
vu16 capture = 0;
if(TIM_GetITStatus(TIM2,TIM_IT_CC1)!=RESET)
{
GPIO_WriteBit(GPIOB,GPIO_Pin_0,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_0)));
capture = TIM_GetCapture1(TIM2);
TIM_SetCompare1(TIM2,capture + 40000);
TIM_ClearITPendingBit(TIM2,TIM_IT_CC1);
}
else if(TIM_GetITStatus(TIM2,TIM_IT_CC2)!=RESET)
{
GPIO_WriteBit(GPIOB,GPIO_Pin_1,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_1)));
capture = TIM_GetCapture2(TIM2);
TIM_SetCompare2(TIM2,capture + 20000);
TIM_ClearITPendingBit(TIM2,TIM_IT_CC2);
}
else if(TIM_GetITStatus(TIM2,TIM_IT_CC3)!=RESET)
{
GPIO_WriteBit(GPIOB,GPIO_Pin_14,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_14)));
capture = TIM_GetCapture3(TIM2);
TIM_SetCompare3(TIM2,capture + 10000);
TIM_ClearITPendingBit(TIM2,TIM_IT_CC3);
}
else if(TIM_GetITStatus(TIM2,TIM_IT_CC4)!=RESET)
{
GPIO_WriteBit(GPIOB,GPIO_Pin_15,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_15)));
capture = TIM_GetCapture4(TIM2);
TIM_SetCompare4(TIM2,capture + 5000);
TIM_ClearITPendingBit(TIM2,TIM_IT_CC4);
}


}

/*************************************** END OF FILE *************************************/