用TIM1产生6路ADC，用CCR4触发ADC1的注入通道采样 - CSDN文库

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用用TIM1产生产生6路路ADC，用，用CCR4触发触发ADC1的注入通道采样的注入通道采样

这几天一直在使用STM32来写sensorless BLDC的驱动框架，那么必须会用到TIM1的CCR1/CCR2/CCR3产生

的六路互补PWM，以及用CCR4来产生一个中断，用来在PWM-ON的时候产生中断进行过零检测，以及相电流

的检测等。

这几天一直在测试PWM，CCR4的中断，ADC1的采样触发+DMA等功能，现在也了解的差不多了，先记录下来，先看下我的

一些设置，TIM1设置：

1 /* Time Base configuration ,init time1 freq*/

2 TIM_TimeBaseStructure.TIM_Period = Period;

3 TIM_TimeBaseStructure.TIM_Prescaler = 0;

4 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

5 TIM_TimeBaseStructure.TIM_ClockDivision = 0;

6 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

7 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

8

9 /* Automatic Output enable, Break, dead time and lock configuration*/

10 TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;

11 TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;

12 TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;

13 TIM_BDTRInitStructure.TIM_DeadTime = 0;

14 TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;

15 TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;

16 TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;

17 TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);

18

19 /*pwm driver set ，channel 1,2,3,4set pwm mode*/

20 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;

21 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;

22 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;

23 TIM_OCInitStructure.TIM_Pulse = 5;

24 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

25 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;

26 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;

27 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;

28 //set OC1/OC1N

29 TIM_OC1Init(TIM1, &TIM_OCInitStructure);

30 //set oc2/oc2n

31 TIM_OCInitStructure.TIM_Pulse = 0;

32 TIM_OC2Init(TIM1, &TIM_OCInitStructure);

33 //set OC3/OC3N

34 TIM_OCInitStructure.TIM_Pulse = 0;

35 TIM_OC3Init(TIM1, &TIM_OCInitStructure);

36 //set adc sample time

37 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//CCR4这个输出使能后才能用来触发ADC1的注入通道采样

38 TIM_OCInitStructure.TIM_Pulse = 0;

39 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;

40 TIM_OC4Init(TIM1, &TIM_OCInitStructure);

41

42 //enable interrupt

43 TIM_ITConfig(TIM1, TIM_IT_CC4, ENABLE);//CCR4的中断，这个通过设置CCR4的pulse来控制产生中断相当于PWM-ON的位置

44 TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);

45 TIM_ITConfig(TIM1, TIM_IT_COM,ENABLE);

46

47 /* BLDC_TIMER_NUM counter enable */

48 TIM_Cmd(TIM1, ENABLE);

49

50 /* Main Output Enable */

51 TIM_CtrlPWMOutputs(TIM1, ENABLE);

ADC1设置，这里采用规则通道+DMA+软件触发，注入通道+CCR4事件触发：

1 ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;

2 ADC_InitStructure.ADC_ScanConvMode = ENABLE;

3 ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;

4 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;

5 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

6 ADC_InitStructure.ADC_NbrOfChannel = 5;

7 ADC_Init(ADC1, &ADC_InitStructure);

8

9 ADC_TempSensorVrefintCmd(ENABLE);

10 ADC_RegularChannelConfig(ADC1,ADC_Channel_0,1,ADC_SampleTime_239Cycles5);//hand

11 ADC_RegularChannelConfig(ADC1,ADC_Channel_1,2,ADC_SampleTime_239Cycles5);//external temperature

12 ADC_RegularChannelConfig(ADC1,ADC_Channel_2,3,ADC_SampleTime_239Cycles5);//vol

13 ADC_RegularChannelConfig(ADC1,ADC_Channel_10 ,4,ADC_SampleTime_239Cycles5);

14 ADC_RegularChannelConfig(ADC1,ADC_Channel_Vrefint,5,ADC_SampleTime_239Cycles5);

15 //上面规则通道的设置，注意采样时间，我发现如果时间设置过的可能数据会互相干扰

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