定时器1ETR外部脉冲计数器无反应？

笨鸟想飞 · 发表于 2020-6-15 21:40:13

战舰板，源工程附下

实现：实现定时器1-4的ETR外部脉冲计数器功能

遇到问题：已经实现定时器2和定时器3的功能，但是定时器1（PA12）和定时器4（PE0）无法读取到脉冲数值。
希望有做过的大神分享一下模板，或者指出问题所在？

以下是定时器的设置

void TIM1_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
//PA12
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); //时钟使能
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //上拉输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_DeInit(TIM1);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值计数到100
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 10Khz的计数频率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设0置时钟分割:TDTS = Tck_tim psc
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
//中断优先级NVIC设置
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQn; //TIM1中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //先占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_ETRClockMode2Config(TIM1, TIM_ExtTRGPSC_OFF, TIM_ExtTRGPolarity_NonInverted, 0); //设置为外部计数模式
TIM_Cmd(TIM1, ENABLE); //使能TIMx外设
TIM_SetCounter(TIM1, 0);//计数器清零
TIM_ClearITPendingBit(TIM1,TIM_IT_Update); //清除中断标志位
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE ); //使能指定的TIM1中断,允许更新中断
}
void TIM2_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //上拉输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
GPIO_Init(GPIOA, &GPIO_InitStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //时钟使能
TIM_DeInit(TIM2);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值计数到100
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 10Khz的计数频率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设0置时钟分割:TDTS = Tck_tim psc
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
//中断优先级NVIC设置
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; //TIM2中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //先占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_ETRClockMode2Config(TIM2, TIM_ExtTRGPSC_OFF, TIM_ExtTRGPolarity_NonInverted, 0); //设置为外部计数模式
TIM_Cmd(TIM2, ENABLE); //使能TIMx外设
TIM_SetCounter(TIM2, 0);//计数器清零
TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE ); //使能指定的TIM2中断,允许更新中断
}
void TIM3_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
//PD2
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //上拉输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
GPIO_Init(GPIOD, &GPIO_InitStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能
TIM_DeInit(TIM3);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值计数到100
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 10Khz的计数频率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设0置时钟分割:TDTS = Tck_tim psc
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
//中断优先级NVIC设置
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //先占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_ETRClockMode2Config(TIM3, TIM_ExtTRGPSC_OFF, TIM_ExtTRGPolarity_NonInverted, 0); //设置为外部计数模式
TIM_Cmd(TIM3, ENABLE); //使能TIMx外设
TIM_SetCounter(TIM3, 0);//计数器清零
TIM_ClearITPendingBit(TIM3,TIM_IT_Update); //清除中断标志位
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能指定的TIM3中断,允许更新中断
}
void TIM4_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
//PE0
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //上拉输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
GPIO_Init(GPIOE, &GPIO_InitStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); //时钟使能
TIM_DeInit(TIM4);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值计数到100
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 10Khz的计数频率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设0置时钟分割:TDTS = Tck_tim psc
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
//中断优先级NVIC设置
NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; //TIM4中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //先占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_ETRClockMode2Config(TIM4, TIM_ExtTRGPSC_OFF, TIM_ExtTRGPolarity_NonInverted, 0); //设置为外部计数模式
TIM_Cmd(TIM4, ENABLE); //使能TIMx外设
TIM_SetCounter(TIM4, 0);//计数器清零
TIM_ClearITPendingBit(TIM4,TIM_IT_Update); //清除中断标志位
TIM_ITConfig(TIM4,TIM_IT_Update,ENABLE ); //使能指定的TIM4中断,允许更新中断
}
//定时器1中断服务程序
void TIM1_IRQHandler(void) //TIM1中断
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET) //检查TIM6更新中断发生与否
{
TIM_ClearITPendingBit(TIM1, TIM_IT_Update); //清除TIMx更新中断标志
LED1=!LED1;
Update1_Flag++;//标记溢出次数
}
}
//定时器2中断服务程序
void TIM2_IRQHandler(void) //TIM2中断
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //检查TIM6更新中断发生与否
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update); //清除TIMx更新中断标志
LED1=!LED1;
Update2_Flag++;//标记溢出次数
}
}
//定时器3中断服务程序
void TIM3_IRQHandler(void) //TIM3中断
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //检查TIM6更新中断发生与否
{
TIM_ClearITPendingBit(TIM3, TIM_IT_Update); //清除TIMx更新中断标志
LED1=!LED1;
Update3_Flag++;//标记溢出次数
}
}
//定时器2中断服务程序
void TIM4_IRQHandler(void) //TIM4中断
{
if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET) //检查TIM6更新中断发生与否
{
TIM_ClearITPendingBit(TIM4, TIM_IT_Update); //清除TIMx更新中断标志
LED1=!LED1;
Update4_Flag++;//标记溢出次数
}
}
u32 Get_MaiChong(u16 i)
{
u32 count=0;
// count=(Update2_Flag-1)*Update_TIM_Period+TIM_GetCounter(TIM2);
count=i;
return count;
}