STM32F030K6T6定时器问题

只看该作者 · 2019-6-10 17:29

STM32F030K6T6  开启两个定时器后，对OLED显示有干扰，请大神解惑
void TIM16_Init(void)
{
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);

TIM_TimeBaseStructure.TIM_Prescaler = 12 - 1;  //预分频系数为48-1，这样计数器计数频率为48MHz/48 = 1MHz
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;  //设置时钟分割
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //设置计数器模式为向上计数模式
TIM_TimeBaseStructure.TIM_Period = 33399;  //设置计数溢出大小，每计1000个数就产生一个更新事件，1ms一次中断
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;  //重复n次计数才触发中断
TIM_TimeBaseInit(TIM16, &TIM_TimeBaseStructure);  //将配置应用到TIM16中
TIM_ITConfig(TIM16, TIM_IT_Update, ENABLE);  //使能TIM16的更新中断
TIM_Cmd(TIM16, ENABLE);  //开启定时器16

//Enable the TIM16 Interrupt
NVIC_InitStructure.NVIC_IRQChannel = TIM16_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}

void TIM16_IRQHandler(void)
{
if(TIM_GetITStatus(TIM16, TIM_IT_Update) != RESET)
{
   TIM3_TimeInt();
}
TIM_ClearITPendingBit(TIM16, 0x00ff);
}

/******************************************** 输入捕获 ********************************************/
/************************************************
函数名称： TIMER_IC_GPIO_Configuration
功能：定时器输入捕获引脚配置
参数：无
返回值：无
作者： strongerHuang
*************************************************/
void TIMER_IC_GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;                         //LED引脚
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;                      //复用模式
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;                //高速输出
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;                   //推完输出
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;                //无上下拉(浮空)
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_2);             //复用配置
}
/************************************************
函数名称： TIMER_IC_Configuration
功能：定时器输入捕获配置
参数：无
返回值：无
作者： strongerHuang
*************************************************/
void TIMER_IC_Configuration(void)
{
  TIM_ICInitTypeDef  TIM_ICInitStructure;
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

  TIM_TimeBaseStructure.TIM_Prescaler = 12-1;                      //8分频(与捕获分频相同)
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;       //向上计数模式
  TIM_TimeBaseStructure.TIM_Period = 0xFFFF;                   //定时周期(自动从装载寄存器ARR的值)
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;          //时钟分频因子
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;                //通道2
  TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;       //捕获极性
  TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //捕获选择
  TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV8;             //捕获分频
  TIM_ICInitStructure.TIM_ICFilter = 0;                            //捕获滤波
  TIM_ICInit(TIM2, &TIM_ICInitStructure);

  TIM_Cmd(TIM2, ENABLE);                                           //使能TIM2

  TIM_ITConfig(TIM2, TIM_IT_CC2, ENABLE);                         //使能中断
}

void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* 外设中断 */

  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;                   //IRQ通道:定时器2
  NVIC_InitStructure.NVIC_IRQChannelPriority = 2;
  NVIC_Init(&NVIC_InitStructure);
}

void TIM2_IRQHandler(void)
{

if(TIM_GetITStatus(TIM2,TIM_IT_CC2) != RESET)
  {

//捕获中断
TIM_ClearITPendingBit(TIM2,TIM_IT_CC2);
TIM2_CaptureInt();
  }
}