STM8L PWM输出问题

只看该作者 · 2014-4-30 23:33

/*使用定时器1的通道1输出PWM*/
void TIM1_PWM_Initial(void)
{
  TIM1_DeInit();
  TIM1_TimeBaseInit(0x0000, TIM1_CounterMode_Up, 500, 0x01);
  TIM1_OC1Init(TIM1_OCMode_PWM1,
            TIM1_OutputState_Enable,
            TIM1_OutputNState_Disable,
            200,//占空比
            TIM1_OCPolarity_High,
            TIM1_OCNPolarity_High,
            TIM1_OCIdleState_Set,
            TIM1_OCNIdleState_Set);
  TIM1_OC1PreloadConfig(ENABLE);

  TIM1_Cmd(ENABLE);
TIM1->BKR |=0x80;//主使能

}
void main(void)
{
  CLK_HSICmd(ENABLE);
  TIM1_PWM_Initial();
  /* Executive loop, runs continually after initialization */
  while (1)
  {
}
}

只看该作者 · 2014-5-1 12:08

和刚才那个一样的吧

3万 · 2014-5-1 13:48

什么问题呢？？？

3万 · 2014-5-1 13:49

没输出，还是其它啥问题？

3万 · 2014-5-1 14:21

你GPIO未设置吧

static void TIM2_Config(void)
{
  /* Enable TIM2 clock */
  CLK_PeripheralClockConfig(CLK_Peripheral_TIM2, ENABLE);

  /* Config TIM2 Channel 1 and channel 2 pins */
  GPIO_Init(GPIOB, GPIO_Pin_0 | GPIO_Pin_2, GPIO_Mode_Out_PP_High_Fast);

  /* Time base configuration */
  TIM2_TimeBaseInit(TIM2_Prescaler_1, TIM2_CounterMode_Up, 65535);

  /* PWM1 Mode configuration: Channel1 */
  TIM2_OC1Init(TIM2_OCMode_PWM1, TIM2_OutputState_Enable, CCR1_Val, TIM2_OCPolarity_High, TIM2_OCIdleState_Set);
  TIM2_OC1PreloadConfig(ENABLE);

  /* PWM1 Mode configuration: Channel2 */
  TIM2_OC2Init(TIM2_OCMode_PWM1, TIM2_OutputState_Enable,CCR2_Val, TIM2_OCPolarity_High, TIM2_OCIdleState_Set);
  TIM2_OC2PreloadConfig(ENABLE);

  TIM2_ARRPreloadConfig(ENABLE);

  /* Enable TIM2 outputs */
  TIM2_CtrlPWMOutputs(ENABLE);

  /* TIM2 enable counter */
  TIM2_Cmd(ENABLE);
}