在例程上只修改了定时器通道引脚，用的是TIM4的CH1，引脚是PD12，但是通过引脚连到3.3V没有反应，但是输入捕获的按键的例程能用，不知道是不是程序的问题，在两块板子上试了都是一样的问题，请哪位大佬帮忙解答一下，这是程序
void TIM14_PWM_Init(u32 arr,u32 psc)
{
//此部分需手动修改IO口设置
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM14,ENABLE); //TIM14时钟使能
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF, ENABLE); //使能PORTF时钟
GPIO_PinAFConfig(GPIOF,GPIO_PinSource9,GPIO_AF_TIM14); //GPIOF9复用位定时器14
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //GPIOA9
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
GPIO_Init(GPIOF,&GPIO_InitStructure); //初始化PF9
TIM_TimeBaseStructure.TIM_Prescaler=psc; //定时器分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseStructure.TIM_Period=arr; //自动重装载值
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM14,&TIM_TimeBaseStructure);
//初始化TIM14 Channel1 PWM模式
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性:TIM输出比较极性高
TIM_OCInitStructure.TIM_Pulse=0;
TIM_OC1Init(TIM14, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM3 OC2
TIM_OC2PreloadConfig(TIM14, TIM_OCPreload_Enable); //使能TIM3在CCR2上的预装载寄存器
TIM_ARRPreloadConfig(TIM14,ENABLE);
TIM_Cmd(TIM14, ENABLE); //使能TIM14
}
TIM_ICInitTypeDef TIM5_ICInitStructure;
//定时器5通道1输入捕获配置
//arr：自动重装值(TIM2,TIM5是32位的!!)
//psc：时钟预分频数
void TIM5_CH1_Cap_Init(u32 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE); //TIM5时钟使能
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); //使能PORTA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //GPIOA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA0
GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5); //PA0复用位定时器5
TIM_TimeBaseStructure.TIM_Prescaler=psc; //定时器分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseStructure.TIM_Period=arr; //自动重装载值
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM5,&TIM_TimeBaseStructure);
//初始化TIM5输入捕获参数
TIM5_ICInitStructure.TIM_Channel = TIM_Channel_1; //CC1S=01 选择输入端 IC1映射到TI1上
TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿捕获
TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; //配置输入分频,不分频
TIM5_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 配置输入滤波器 不滤波
TIM_ICInit(TIM5, &TIM5_ICInitStructure);
TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1,ENABLE);//允许更新中断 ,允许CC1IE捕获中断
TIM_Cmd(TIM5,ENABLE ); //使能定时器5
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;//抢占优先级3
NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、
}
//捕获状态
//[7]:0,没有成功的捕获;1,成功捕获到一次.
//[6]:0,还没捕获到低电平;1,已经捕获到低电平了.
//[5:0]:捕获低电平后溢出的次数(对于32位定时器来说,1us计数器加1,溢出时间:4294秒)
u8 TIM5CH1_CAPTURE_STA=0; //输入捕获状态
u32 TIM5CH1_CAPTURE_VAL; //输入捕获值(TIM2/TIM5是32位)
//定时器5中断服务程序
void TIM5_IRQHandler(void)
{
if((TIM5CH1_CAPTURE_STA&0X80)==0)//还未成功捕获
{
if(TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)//溢出
{
if(TIM5CH1_CAPTURE_STA&0X40)//已经捕获到高电平了
{
if((TIM5CH1_CAPTURE_STA&0X3F)==0X3F)//高电平太长了
{
TIM5CH1_CAPTURE_STA|=0X80; //标记成功捕获了一次
TIM5CH1_CAPTURE_VAL=0XFFFFFFFF;
}else TIM5CH1_CAPTURE_STA++;
}
}
if(TIM_GetITStatus(TIM5, TIM_IT_CC1) != RESET)//捕获1发生捕获事件
{
if(TIM5CH1_CAPTURE_STA&0X40) //捕获到一个下降沿
{
TIM5CH1_CAPTURE_STA|=0X80; //标记成功捕获到一次高电平脉宽
TIM5CH1_CAPTURE_VAL=TIM_GetCapture1(TIM5);//获取当前的捕获值.
TIM_OC1PolarityConfig(TIM5,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
{
TIM5CH1_CAPTURE_STA=0; //清空
TIM5CH1_CAPTURE_VAL=0;
TIM5CH1_CAPTURE_STA|=0X40; //标记捕获到了上升沿
TIM_Cmd(TIM5,DISABLE ); //关闭定时器5
TIM_SetCounter(TIM5,0);
TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Falling); //CC1P=1 设置为下降沿捕获
TIM_Cmd(TIM5,ENABLE ); //使能定时器5
}
}
}
TIM_ClearITPendingBit(TIM5, TIM_IT_CC1|TIM_IT_Update); //清除中断标志位
}
TIM_ICInitTypeDef TIM2_ICInitStructure;
void TIM2_CH3_Cap_Init(u32 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE); //TIM5时钟使能
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); //使能PORTA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //GPIOA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA0
GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_TIM2); //PB3复用位定时器2
TIM_TimeBaseStructure.TIM_Prescaler=psc; //定时器分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseStructure.TIM_Period=arr; //自动重装载值
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);
//初始化TIM5输入捕获参数
TIM5_ICInitStructure.TIM_Channel = TIM_Channel_3; //CC1S=01 选择输入端 IC1映射到TI1上
TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿捕获
TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; //配置输入分频,不分频
TIM5_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 配置输入滤波器 不滤波
TIM_ICInit(TIM2, &TIM2_ICInitStructure);
TIM_ITConfig(TIM2,TIM_IT_Update|TIM_IT_CC1,ENABLE);//允许更新中断 ,允许CC1IE捕获中断
TIM_Cmd(TIM2,ENABLE ); //使能定时器5
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;//抢占优先级3
NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、
}
//捕获状态
//[7]:0,没有成功的捕获;1,成功捕获到一次.
//[6]:0,还没捕获到低电平;1,已经捕获到低电平了.
//[5:0]:捕获低电平后溢出的次数(对于32位定时器来说,1us计数器加1,溢出时间:4294秒)
u8 TIM2CH3_CAPTURE_STA=0; //输入捕获状态
u32 TIM2CH3_CAPTURE_VAL; //输入捕获值(TIM2/TIM5是32位)
//定时器5中断服务程序
void TIM2_IRQHandler(void)
{
if((TIM2CH3_CAPTURE_STA&0X80)==0)//还未成功捕获
{
if(TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)//溢出
{
if(TIM2CH3_CAPTURE_STA&0X40)//已经捕获到高电平了
{
if((TIM2CH3_CAPTURE_STA&0X3F)==0X3F)//高电平太长了
{
TIM2CH3_CAPTURE_STA|=0X80; //标记成功捕获了一次
TIM2CH3_CAPTURE_VAL=0XFFFFFFFF;
}else TIM2CH3_CAPTURE_STA++;
}
}
if(TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET)//捕获1发生捕获事件
{
if(TIM2CH3_CAPTURE_STA&0X40) //捕获到一个下降沿
{
TIM2CH3_CAPTURE_STA|=0X80; //标记成功捕获到一次高电平脉宽
TIM2CH3_CAPTURE_VAL=TIM_GetCapture1(TIM2);//获取当前的捕获值.
TIM_OC1PolarityConfig(TIM2,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
{
TIM2CH3_CAPTURE_STA=0; //清空
TIM2CH3_CAPTURE_VAL=0;
TIM2CH3_CAPTURE_STA|=0X40; //标记捕获到了上升沿
TIM_Cmd(TIM2,DISABLE ); //关闭定时器4
TIM_SetCounter(TIM2,0);
TIM_OC1PolarityConfig(TIM2,TIM_ICPolarity_Falling); //CC1P=1 设置为下降沿捕获
TIM_Cmd(TIM2,ENABLE ); //使能定时器5
}
}
}
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1|TIM_IT_Update); //清除中断标志位
}
这是主函数：
extern u8 TIM5CH1_CAPTURE_STA; //输入捕获状态
extern u32 TIM5CH1_CAPTURE_VAL; //输入捕获值
extern u8 TIM2CH3_CAPTURE_STA; //输入捕获状态
extern u32 TIM2CH3_CAPTURE_VAL; //输入捕获值(TIM2/TIM5是32位)
int main(void)
{
long long temp1=0;
long long temp2=0;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置系统中断优先级分组2
delay_init(168); //初始化延时函数
uart_init(115200); //初始化串口波特率为115200
LED_Init(); //初始化LED
LCD_Init(); //初始化LCD接口
Adc_Init();
TIM14_PWM_Init(500-1,84-1);
TIM5_CH1_Cap_Init(0XFFFFFFFF,84-1);
TIM2_CH3_Cap_Init(0XFFFFFFFF,84-1);
POINT_COLOR=RED;
LCD_ShowString(30,50,200,16,16,"Explorer STM32F4");
LCD_ShowString(30,70,200,16,16,"ADC TEST");
LCD_ShowString(30,90,200,16,16,"ATOM@ALIENTEK");
LCD_ShowString(30,110,200,16,16,"2014/5/6");
POINT_COLOR=BLUE;//设置字体为蓝 {MOD}
//LCD_ShowString(30,130,200,16,16,"ADC1_CH5_VAL:");
LCD_ShowString(30,150,200,16,16,"ADC1_CH5_VOL: us");
LCD_ShowString(30,200,200,16,16,"ADC1_CH5_VOL: us"); //先在固定位置显示小数点
while(1)
{
delay_ms(10);
TIM_SetCompare1(TIM14,TIM_GetCapture1(TIM14)+1);
if(TIM_GetCapture1(TIM14)==300)TIM_SetCompare1(TIM14,0);
if(TIM5CH1_CAPTURE_STA&0X80) //成功捕获到了一次高电平
{
temp1=TIM5CH1_CAPTURE_STA&0X3F;
temp1*=0XFFFFFFFF; //溢出时间总和
temp1+=TIM5CH1_CAPTURE_VAL;
LCD_ShowxNum(150,150,temp1,7,16,0X80);
TIM5CH1_CAPTURE_STA=0;
}
if(TIM2CH3_CAPTURE_STA&0X80) //成功捕获到了一次高电平
{
temp2=TIM2CH3_CAPTURE_STA&0X3F;
temp2*=0XFFFFFFFF; //溢出时间总和
temp2+=TIM2CH3_CAPTURE_VAL;
LCD_ShowxNum(150,200,temp2,7,16,0X80);
TIM2CH3_CAPTURE_STA=0;
}
}
}
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