STMF030F4的输入捕获，移植的F1的程序不行

红尘笑客288 · 发表于 2018-1-23 16:50:56

#include "timer1.h"

unsigned short int  TIM1_CH2_STA=0; //输入捕获状态

unsigned short int  TIM1_CH2_VAL;       //输入捕获值
uint32_t Freq_InputCapture=0;
void TIM1_CH2_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_ICInitTypeDef  TIM1_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
   //使能时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);////使能TIM1时钟
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);  //使能GPIOA时钟

GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_9;//PA9清零
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用引脚
   GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;//高速输出
GPIO_Init(GPIOA, &GPIO_InitStructure);
   GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_2);//备用功能配置

GPIO_ResetBits(GPIOA,GPIO_Pin_9);  //清零PA9 GPIO_Mode_IN

TIM_TimeBaseStructure.TIM_Period = 0xffff; //最大为0xFFFF
TIM_TimeBaseStructure.TIM_Prescaler =47;  //48M-1
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

TIM1_ICInitStructure.TIM_Channel = TIM_Channel_2; //CC1S=01    选择输入端 IC1映射到TI1上
TIM1_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿捕获
TIM1_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
TIM1_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;  //配置输入分频,不分频
TIM1_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 配置输入滤波器不滤波
TIM_ICInit(TIM1, &TIM1_ICInitStructure);

NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn; //TIM1中断
NVIC_InitStructure.NVIC_IRQChannelPriority=0x02; //先占优先级2级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器
TIM_ITConfig(TIM1,TIM_IT_Update|TIM_IT_CC2,ENABLE);//允许更新中断 ,允许CC1IE捕获中断

TIM_Cmd(TIM1,ENABLE );
}

uint8_t  TIM1CH2_CAPTURE_STA=0; //输入捕获状态
uint16_t TIM1CH2_CAPTURE_VAL; //输入捕获值

//定时器5中断服务程序
void TIM1_IRQHandler(void)
{

if((TIM1CH2_CAPTURE_STA&0X80)==0)//还未成功捕获
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
{
if(TIM1CH2_CAPTURE_STA&0X40)//已经捕获到高电平了
{
if((TIM1CH2_CAPTURE_STA&0X3F)==0X3F)//高电平太长了
{
TIM1CH2_CAPTURE_STA|=0X80;//标记成功捕获了一次
TIM1CH2_CAPTURE_VAL=0XFFFF;
}else TIM1CH2_CAPTURE_STA++;
}
}
if (TIM_GetITStatus(TIM1, TIM_IT_CC2) != RESET)//捕获1发生捕获事件
{
if(TIM1CH2_CAPTURE_STA&0X40) //捕获到一个下降沿
{
TIM1CH2_CAPTURE_STA|=0X80; //标记成功捕获到一次高电平脉宽
TIM1CH2_CAPTURE_VAL=TIM_GetCapture2(TIM1);
   TIM_OC1PolarityConfig(TIM1,TIM_ICPolarity_Rising); //CC1P=0 设置为上升沿捕获
}else    //还未开始,第一次捕获上升沿
{
TIM1CH2_CAPTURE_STA=0; //清空
TIM1CH2_CAPTURE_VAL=0;
     TIM_SetCounter(TIM1,0);
TIM1CH2_CAPTURE_STA|=0X40; //标记捕获到了上升沿
   TIM_OC1PolarityConfig(TIM1,TIM_ICPolarity_Falling); //CC1P=1 设置为下降沿捕获
}
}
}

TIM_ClearITPendingBit(TIM1, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位

}

为什么用不了呢，我用的原子的F1程序，也根据芯片修改了的。大神帮忙看看是什么问题。