static void TIM4_Mode_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
/*正交編碼器輸入引腳*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/*- TIM編碼器模式配置-*/
TIM_DeInit(TIM4);
TIM_TimeBaseStructure.TIM_Period = Parameter * 2; //u16 Parameter = 512；輸入編碼器線數
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1 ;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI1, TIM_ICPolarity_Rising ,TIM_ICPolarity_Rising); //配置編碼器模式3，即觸發源和極性
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 6;
TIM_ICInit(TIM4, &TIM_ICInitStructure);
TIM4->CNT = 0;
TIM_Cmd(TIM4, ENABLE); //啟動TIM4定時器
}
void TIM4_Init(void)
{
TIM4_Mode_Config();
}
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