void TIM3_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
TIM_TimeBaseStructure.TIM_Period =20;
TIM_TimeBaseStructure.TIM_Prescaler =TIM_ICPSC_DIV1; // No prescaling
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM3,TIM_EncoderMode_TI12,TIM_ICPolarity_Rising,TIM_ICPolarity_Rising);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 6;//ICx_FILTER;
//TIM_ICInitStructure.TIM_ICPrescaler=TIM_ICPSC_DIV1;
TIM_ICInit(TIM3,&TIM_ICInitStructure);
// Clear all pending interrupts
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);
//Reset counter
//TIM3->CNT = 0;
TIM_SetCounter(TIM3,0);
TIM_Cmd(TIM3, ENABLE);
}
这个程序的问题是 当外部正交编码器的脉冲式自动装载寄存器值得一半时就发生中断 是为什么啊？？？ |
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