stm32对编码器计数，以下是部分代码和图都是前辈留下的，我现在是根本不知道他到底要用什么方法来测数据，而且觉得图有问题，能帮我解释下吗？非常感谢

小米子哦

[mw_shl_code=c,true]

/

*???????????è??*/ void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Enable the TIM2 gloabal Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } /*?¨?±?÷2??????*/ void TIM2_Init(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; /* TIM2 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE) /* --------------------------------------------------------------- TIM2 Configuration: Output Compare Timing Mode: TIM2CLK = 36 MHz, Prescaler = 7200, TIM2 counter clock = 7.2 MHz --------------------------------------------------------------- */ /* Time base configuration */ //????????×???×°????????????????????????0????????????10000???ó??9999 TIM_TimeBaseStructure.TIM_Period = 8 - 1; //?¨?±8ms:8-1 ?¨?±0.5s:5000-1 // ?????????¤·?????????·???±???n - 1,??????0?±±í????·????ù??????1 TIM_TimeBaseStructure.TIM_Prescaler = 7200 - 1; // ?¨?????¨?±?÷?±??(CK_INT)????????×????¨?÷(ETR,TIx) // ?????????ù?????®????·???±??? TIM_TimeBaseStructure.TIM_ClockDivision = 0; //?ò?????? TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //???????¨?±?÷2 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); /* Clear TIM5 update pending flag[????TIM5????????±ê??] */ TIM_ClearITPendingBit(TIM2, TIM_IT_Update); /* TIM IT enable */ //?ò?????????? TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); /* TIM5 enable counter */ // TIM_Cmd(TIM2, ENABLE); //?????÷???????????¤×÷ } void EXIT_Configuration(void) { } void TIM2_IRQHandler(void) { static uint8_t digitalBit = 0; if(TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) { if(0 == digitalBit) { //DigitalDisplay(digArr[0], 1); } else if(1 == digitalBit) { DigitalDisplay(digArr[1], 2); } else if(2 == digitalBit) { DigitalDisplay(digArr[2], 3); } digitalBit++; if(3 == digitalBit) { digitalBit = 0; } } TIM_ClearITPendingBit(TIM2, TIM_IT_Update); } /*?é???????÷????A?à*/ uint8_t GetCounterAInfo(void) { if(0 == GPIO_ReadInputDataBit(I_CNTA_Port, I_CNTA_Pin)) { return 0; } else { return 1; } }[/mw_shl_code]

正点原子

帮顶。。。。

小米子哦

亲爱的大神们呢

一口梦千年

TIM里有编码器模式，只要配置一下就行的，有一个16位的TIMx->CNT，读里面的数就行的。我看他上面开的更新事件中断，里面digitalBit是哪里的，应该外面还有吧。