基于stm32 编码器应用

ID:305089 · 发表于 2018-5-27 12:15

void Encoder1_Init(void)
{
GPIO_InitTypeDef GPIO_Initure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
GPIO_Initure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_Initure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Initure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_Initure);
TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI2, TIM_ICPolarity_Falling, TIM_ICPolarity_Falling);
TIM3->CNT = 1500;
//TIM3->CNT = 0;
TIM_Cmd(TIM3, ENABLE);
}
//读取编码器的值
int Encoder1_read(void)
{
int count = 0;
count = TIM3->CNT - 1500;
//count = TIM3->CNT;
// TIM3->CNT = 0x7fff; //清零重新读取
return count;
}

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