有人用过F407双ADC规则同步间断模式吗(求助版主)？

只看该作者 · 2014-5-9 10:25

本帖最后由 yzzly 于 2014-5-9 16:26 编辑

老系统是F103VET6，双ADC规则同步模式，使用TIM4的CC4触发，每周波采样32个数据（也就是TIM4每20毫秒触发ADC 32次，如果开中断的话，可以看到TIM4每625微妙中断一次），一次触发转换5个通道，转换结果由DMA读取，每20毫秒DMA需要读取32*5=160个数据，DMA计数到后中断，中断周期为正确的20毫秒；系统工作一直很好；
最近开始产品升级设计，选用F407VET6，还是双ADC模式，TIM4的CC4触发，每周波采样32个数据（也就是TIM4每20毫秒触发ADC 32次，如果开中断的话，可以看到TIM4每625微妙中断一次），DMA的中断周期完全不正确！当为一个通道时DMA中断周期是20毫秒，而为5个通道时DMA的中断周期为100毫秒！好像一次触发只转换了1个通道的数据，没有连续转换5个通道！能否给予提示？谢谢！
系统时钟168M，APB1CLK、APB2CLK分别是42M和84M，ADCCLK是14M。

只看该作者 · 2014-5-9 14:16

要想达到设计目的，我的初始化有什么问题呢？？？
ADC1->SQR3 |= UL1AinCH << 0;       //ÉèÖÃ¹æÔòÐòÁÐÖÐÃ¿¸ö×ª»»µÄÍ¨µÀºÅ,×ª»»ºÅÓëÍ¨µÀºÅ¿ÉÒÔ²»¶ÔÓ¦,ÀýÈç:µÚ
ADC1->SQR3 |= UczAinCH << 5;       //Ò»¸ö×ª»»Í¨µÀ16»òÕßÆäËûÍ¨µÀ¶ø²»Ò»¶¨¾ÍÊÇÍ¨µÀ1,ÕâÑù×öµÄºÃ´¦ÊÇ:Éè¼Æ
ADC1->SQR3 |= UaAinCH << 10;       //Í¼Ö½Ê±Ä£ÄâÊäÈëÒý½Å¾ÍÃ»ÓÐË³ÐòÒªÇó,¸øÉè¼Æ´øÀ´¼«´óµÄ·½±ã.
ADC1->SQR3 |= UbAinCH << 15;
ADC1->SQR3 |= UcAinCH << 20;
ADC1->SQR3 |= U0AinCH << 25;
ADC1->SQR2 |= 7 << 0;             //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC1->SQR2 |= 8 << 5;
ADC1->SQR2 |= 9 << 10;
ADC1->SQR2 |= 10 << 15;
ADC1->SQR2 |= 11 << 20;
ADC1->SQR2 |= 12 << 25;
ADC1->SQR1 |= 13 << 0;             //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC1->SQR1 |= 14 << 5;
ADC1->SQR1 |= 15 << 10;
ADC1->SQR1 |= 16 << 15;
ADC1->SQR1 |= (AdcChNum-1) << 20;//ÉèÖÃ¹æÔò×éÄ£ÄâÊäÈëÍ¨µÀÊý

ADC1->CR1 = 0;
ADC1->CR1 |= AdcChNum << 13;       //DISCNUM
ADC1->CR1 |= 1 << 11;             //DISCEN
ADC1->CR2 = 0;
ADC1->CR2 |= 1 << 28;             //EXTEN
ADC1->CR2 |= 9 << 24;             //EXTSEL
ADC1->CR2 |= 1 << 10;             //EOCS
ADC1->CR2 |= 1 << 9;             //DDS
ADC1->CR2 |= 1 << 8;             //DMA

ADC2->SQR3 |= UL2AinCH << 0;       //ÉèÖÃ¹æÔòÐòÁÐÖÐÃ¿¸ö×ª»»µÄÍ¨µÀºÅ,×ª»»ºÅÓëÍ¨µÀºÅ¿ÉÒÔ²»¶ÔÓ¦,ÀýÈç:µÚ
ADC2->SQR3 |= UdcAinCH << 5;       //Ò»¸ö×ª»»Í¨µÀ16»òÕßÆäËûÍ¨µÀ¶ø²»Ò»¶¨¾ÍÊÇÍ¨µÀ1,ÕâÑù×öµÄºÃ´¦ÊÇ:Éè¼Æ
ADC2->SQR3 |= IaAinCH << 10;       //Í¼Ö½Ê±Ä£ÄâÊäÈëÒý½Å¾ÍÃ»ÓÐË³ÐòÒªÇó,¸øÉè¼Æ´øÀ´¼«´óµÄ·½±ã.
ADC2->SQR3 |= IbAinCH << 15;
ADC2->SQR3 |= IcAinCH << 20;
ADC2->SQR3 |= I0AinCH << 25;
ADC2->SQR2 |= 7 << 0;             //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC2->SQR2 |= 8 << 5;
ADC2->SQR2 |= 9 << 10;
ADC2->SQR2 |= 10 << 15;
ADC2->SQR2 |= 11 << 20;
ADC2->SQR2 |= 12 << 25;
ADC2->SQR1 |= 13 << 0;       //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC2->SQR1 |= 14 << 5;
ADC2->SQR1 |= 15 << 10;
ADC2->SQR1 |= 16 << 15;
ADC2->SQR1 |= (AdcChNum-1) << 20;//ÉèÖÃ¹æÔò×éÄ£ÄâÊäÈëÍ¨µÀÊý

ADC2->CR1 = 0;
ADC2->CR1 |= AdcChNum << 13;       //DISCNUM
ADC2->CR1 |= 1 << 11;             //DISCEN
ADC2->CR2 = 0;
//ADC2->CR2 |= 1 << 28;             //EXTEN
ADC2->CR2 |= 9 << 24;             //EXTSEL
ADC2->CR2 |= 1 << 10;             //EOCS
ADC2->CR2 |= 1 << 9;             //DDS
ADC2->CR2 |= 1 << 8;             //DMA

ADC->CCR = 0;
ADC->CCR |= 2 << 16;             //ADCPRE
ADC->CCR |= 2 << 14;             //DMA
ADC->CCR |= 1 << 13;             //DDS
ADC->CCR |= 1 << 8;             //DELAY
ADC->CCR |= 6 << 0;             //MULTI40

ADC1->CR2 |= 1 << 0;             //ADON
ADC2->CR2 |= 1 << 0;             //ADON

只看该作者 · 2014-5-9 14:59

在F103系统把DISCEN位设置为0后，DMA中断周期由20毫秒变为100毫秒，就是说在这种状态下TIM4的每次触发只转换1次，而当DISCEN位=1的时候，TIM4的每次触发会转换5次；
在F407系统，无论DISCEN位是0还是1，DMA的中断周期都是100毫秒，就是说DISCEN位好像根本没有起作用！！！

只看该作者 · 2014-5-9 15:26

论坛上看上去热热闹闹的，是不是很少有人如此复杂的应用？？？

只看该作者 · 2014-5-9 16:30

顶起！

3万 · 2014-5-9 19:27

/* ADC Common configuration *************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_TripleMode_RegSimult;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInit(&ADC_CommonInitStructure);

/* ADC1 regular channel 12 configuration ************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 3;
ADC_Init(ADC1, &ADC_InitStructure);

3万 · 2014-5-9 19:27

试试这段函数，你写寄存器看的我头晕

3万 · 2014-5-9 19:42

ADC_InitStructure.ADC_ScanConvMode = ENABLE;
这句你咋写的？

只看该作者 · 2014-5-9 20:53

用库函数设置过，不行才仔细研究寄存器的，ADC_InitStructure.ADC_ScanConvMode = ENABLE;这一句必须为DISABLE

只看该作者 · 2014-5-12 11:11

本帖最后由 wallace_tsou 于 2014-5-12 11:12 编辑

GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
GPIO_Init(GPIOC, &GPIO_InitStructure);

ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T8_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 2;
ADC_Init(ADC2, &ADC_InitStructure);

ADC_RegularChannelConfig(ADC2, ADC_Channel_14, 1, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_15, 2, ADC_SampleTime_144Cycles);

ADC_DMARequestAfterLastTransferCmd(ADC2, ENABLE);
ADC_DMACmd(ADC2, ENABLE);
ADC_Cmd(ADC2, ENABLE);
使用STM32F205，和STM32F407是相似的。
雙通道取樣程式，已可運作。

只看该作者 · 2014-5-12 11:22

谢谢wallace_tsou，与你的工作模式是不同的！让ADC工作简单，需要按逻辑要求正确工作！

只看该作者 · 2014-5-12 11:45

是確定一次觸發二次轉換的程式碼。
只是
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
就是這樣設。

只看该作者 · 2014-5-12 11:59

没用，ENABLE、DISABLE都试过！在老产品的103系统上是管用的！

只看该作者 · 2014-5-12 13:07

本帖最后由 wallace_tsou 于 2014-5-12 13:13 编辑

GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
GPIO_Init(GPIOC, &GPIO_InitStructure);

ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
// ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T8_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 2;
ADC_Init(ADC2, &ADC_InitStructure);

ADC_DiscModeChannelCountConfig(ADC2,2);
// ADC_DiscModeChannelCountConfig(ADC2,1);
ADC_DiscModeCmd(ADC2, ENABLE);
ADC_RegularChannelConfig(ADC2, ADC_Channel_14, 1, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_15, 2, ADC_SampleTime_144Cycles);
// ADC_RegularChannelConfig(ADC2, ADC_Channel_14, 1, ADC_SampleTime_15Cycles);
// ADC_RegularChannelConfig(ADC2, ADC_Channel_15, 2, ADC_SampleTime_15Cycles);

ADC_DMARequestAfterLastTransferCmd(ADC2, ENABLE);
ADC_DMACmd(ADC2, ENABLE);
ADC_Cmd(ADC2, ENABLE);
用這樣的程式
使用在
ADC_DiscModeChannelCountConfig(ADC2,1);
設定下，一次觸發ADC出一個。
使用在
ADC_DiscModeChannelCountConfig(ADC2,2);
設定下，一次觸發ADC出二個。
但前面的程式沒有設定，就自己設定為ADC_DiscModeCmd(ADC2, ENABLE);的行為。

只看该作者 · 2014-5-12 14:02

扫描模式与间断模式不是一回事！

只看该作者 · 2014-5-12 14:57

规则组的间断模式
Discontinuous mode
Regular group
This mode is enabled by setting the DISCEN bit in the ADC_CR1 register. It can be used to
convert a short sequence of n conversions (n ≤ 8) that is part of the sequence of
conversions selected in the ADC_SQRx registers. The value of n is specified by writing to
the DISCNUM[2:0] bits in the ADC_CR1 register.
When an external trigger occurs, it starts the next n conversions selected in the ADC_SQRx
registers until all the conversions in the sequence are done. The total sequence length is
defined by the L[3:0] bits in the ADC_SQR1 register.

只看该作者 · 2014-5-12 15:01

文件上沒有衝突。
在STM32F2xx上,若是將Scan關閉，只會對單一通道取樣。變成無法對多通道取樣。
你何不將scan打開試試看。

只看该作者 · 2014-5-12 15:25

打开了，结果不对

只看该作者 · 2014-5-12 15:31

Scan未打開的話，連Injected group也是單通道，我的應用上反而是不行的。
剛在STM32F401上測Injected group，Scan是是打開regular及injected使用多通道的開關。

只看该作者 · 2014-5-12 15:59

本帖最后由 yzzly 于 2014-5-12 16:08 编辑

终于可以了!
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T4_CC4;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = AdcChNum;
ADC_Init(ADC1,&ADC_InitStructure);

ADC_CommonInitStructure.ADC_Mode = ADC_DualMode_RegSimult;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div6;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_2;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_10Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);

ADC_DiscModeChannelCountConfig(ADC1,AdcChNum);                //¼ä¶ÏÄ£Ê½Í¨µÀ¸öÊýÅäÖÃ
ADC_DiscModeCmd(ADC1, ENABLE);                                           //¼ä¶ÏÄ£Ê½Ê¹ÄÜ
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_EOCOnEachRegularChannelCmd(ADC1,ENABLE);
ADC_DMACmd(ADC1, ENABLE);                                                 //ADC1µÄDMAÊ¹ÄÜ
ADC_Cmd(ADC1, ENABLE);

ADC1->SQR3 |= UL1AinCH << 0;
ADC1->SQR3 |= UczAinCH << 5;
ADC1->SQR3 |= UaAinCH << 10;
ADC1->SQR3 |= UbAinCH << 15;
ADC1->SQR3 |= UcAinCH << 20;
ADC1->SQR3 |= U0AinCH << 25;
ADC1->SQR2 |= 7 << 0;                                  //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC1->SQR2 |= 8 << 5;
ADC1->SQR2 |= 9 << 10;
ADC1->SQR2 |= 10 << 15;
ADC1->SQR2 |= 11 << 20;
ADC1->SQR2 |= 12 << 25;
ADC1->SQR1 |= 13 << 0;                                  //ÉèÖÃ¹æÔòÐòÁÐÖÐµÄÍ¨µÀºÅ
ADC1->SQR1 |= 14 << 5;
ADC1->SQR1 |= 15 << 10;
ADC1->SQR1 |= 16 << 15;
ADC1->SQR1 |= (AdcChNum-1) << 20;

ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T4_CC4;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = AdcChNum;
ADC_Init(ADC2,&ADC_InitStructure);

ADC_CommonInitStructure.ADC_Mode = ADC_DualMode_RegSimult;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div6;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_2;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_10Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);

ADC_DiscModeChannelCountConfig(ADC2,AdcChNum);                   //¼ä¶ÏÄ£Ê½Í¨µÀ¸öÊýÅäÖÃ
ADC_DiscModeCmd(ADC2, ENABLE);                                              //¼ä¶ÏÄ£Ê½Ê¹ÄÜ
ADC_DMARequestAfterLastTransferCmd(ADC2, ENABLE);
ADC_EOCOnEachRegularChannelCmd(ADC2,ENABLE);
ADC_DMACmd(ADC2, ENABLE);                                                       //ADC2µÄDMAÊ¹ÄÜ
ADC_Cmd(ADC2, ENABLE);

ADC2->SQR3 |= UL2AinCH << 0;
ADC2->SQR3 |= UdcAinCH << 5;
ADC2->SQR3 |= IaAinCH << 10;
ADC2->SQR3 |= IbAinCH << 15;
ADC2->SQR3 |= IcAinCH << 20;
ADC2->SQR3 |= I0AinCH << 25;

有人用过F407双ADC规则同步间断模式吗(求助版主)？

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