|
本帖最后由 kylongmu 于 2016-10-8 18:46 编辑 单通道工作时是正常的，现在想AD1与AD2同步模式工作，但是一直不能启动，各位大神帮看看是什么问题： static TIM_HandleTypeDef Timer4Handle; void Timer4_init() { TIM_ClockConfigTypeDef TimerClockConfig; TIM_MasterConfigTypeDef sMasterConfig; __TIM4_CLK_ENABLE(); //Timer init Timer4Handle.Instance = (TIM_TypeDef *)TIM4; Timer4Handle.Init.Prescaler = 0; Timer4Handle.Init.CounterMode = TIM_COUNTERMODE_UP; Timer4Handle.Init.Period = 108; Timer4Handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; //Timer4Handle.Init.RepetitionCounter = 0; //Timer4Handle.Channel = HAL_TIM_ACTIVE_CHANNEL_1; //Timer4Handle.hdma[0] = &DMA_ADC_Handle; HAL_TIM_Base_Init(&Timer4Handle); TimerClockConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL; HAL_TIM_ConfigClockSource(&Timer4Handle,&TimerClockConfig); sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; HAL_TIMEx_MasterConfigSynchronization(&Timer4Handle, &sMasterConfig); //HAL_TIM_Base_Start(&Timer4Handle); HAL_TIM_Base_Start_IT(&Timer4Handle); } /* ADC1 init function */ ADC_HandleTypeDef hadc1; ADC_HandleTypeDef hadc2; DMA_HandleTypeDef hdma_adc1; static void MX_ADC1_Init(void) { ADC_MultiModeTypeDef multimode; ADC_ChannelConfTypeDef sConfig; /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.ScanConvMode = DISABLE; hadc1.Init.ContinuousConvMode = ENABLE; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING; hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T4_TRGO; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 1; hadc1.Init.DMAContinuousRequests = ENABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; HAL_ADC_Init(&hadc1); /**Configure the ADC multi-mode */ multimode.Mode = ADC_DUALMODE_REGSIMULT; multimode.DMAAccessMode = ADC_DMAACCESSMODE_2; multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_5CYCLES; HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode); /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. */ sConfig.Channel = ADC_CHANNEL_10; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES; HAL_ADC_ConfigChannel(&hadc1, &sConfig); } /* ADC2 init function */ static void MX_ADC2_Init(void) { ADC_MultiModeTypeDef multimode; ADC_ChannelConfTypeDef sConfig; /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc2.Instance = ADC2; hadc2.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc2.Init.Resolution = ADC_RESOLUTION_12B; hadc2.Init.ScanConvMode = DISABLE; hadc2.Init.ContinuousConvMode = ENABLE; hadc2.Init.DiscontinuousConvMode = DISABLE; hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc2.Init.NbrOfConversion = 1; hadc2.Init.DMAContinuousRequests = ENABLE; hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV; HAL_ADC_Init(&hadc2); /**Configure the ADC multi-mode */ multimode.Mode = ADC_DUALMODE_REGSIMULT; multimode.DMAAccessMode = ADC_DMAACCESSMODE_2; multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_5CYCLES; HAL_ADCEx_MultiModeConfigChannel(&hadc2, &multimode); /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. */ sConfig.Channel = ADC_CHANNEL_13; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES; HAL_ADC_ConfigChannel(&hadc2, &sConfig); } void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc) { GPIO_InitTypeDef GPIO_InitStruct; if(hadc->Instance==ADC1) { /* USER CODE BEGIN ADC1_MspInit 0 */ /* USER CODE END ADC1_MspInit 0 */ /* Peripheral clock enable */ __HAL_RCC_ADC1_CLK_ENABLE(); /**ADC1 GPIO Configuration PC0 ------> ADC1_IN10 */ GPIO_InitStruct.Pin = GPIO_PIN_0; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* Peripheral DMA init*/ hdma_adc1.Instance = DMA2_Stream0; hdma_adc1.Init.Channel = DMA_CHANNEL_0; hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE; hdma_adc1.Init.MemInc = DMA_MINC_ENABLE; hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_WORD; hdma_adc1.Init.Mode = DMA_NORMAL; hdma_adc1.Init.Priority = DMA_PRIORITY_VERY_HIGH; hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_DISABLE; HAL_DMA_Init(&hdma_adc1); __HAL_LINKDMA(hadc,DMA_Handle,hdma_adc1); /* USER CODE BEGIN ADC1_MspInit 1 */ /* USER CODE END ADC1_MspInit 1 */ } else if(hadc->Instance==ADC2) { /* USER CODE BEGIN ADC2_MspInit 0 */ /* USER CODE END ADC2_MspInit 0 */ /* Peripheral clock enable */ __HAL_RCC_ADC2_CLK_ENABLE(); /**ADC2 GPIO Configuration PC3 ------> ADC2_IN13 */ GPIO_InitStruct.Pin = GPIO_PIN_3; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* USER CODE BEGIN ADC2_MspInit 1 */ /* USER CODE END ADC2_MspInit 1 */ } } void adc_init_2ch() { HAL_ADC_MspInit(&hadc1); HAL_ADC_MspInit(&hadc2); MX_ADC1_Init(); MX_ADC2_Init(); } void adc_readn( uint32_t * data, uint32_t nelems) { HAL_ADC_Start(&hadc2); HAL_ADCEx_MultiModeStart_DMA(&hadc1, (uint32_t *)data, nelems); } void DMA2_Stream0_IRQHandler(void)//ADC DMA { /* USER CODE BEGIN DMA2_Stream2_IRQn 0 */ tim4cnt++; if(__HAL_DMA_GET_IT_SOURCE(&DMA_ADC_Handle, DMA_IT_HT)) { //Half transfer tinterval = tmr.read_us();//Half DMA HAL_DMA_IRQHandler(&DMA_ADC_Handle); return; } if(__HAL_DMA_GET_IT_SOURCE(&DMA_ADC_Handle, DMA_IT_TC))//Full transfer tinterval=tmr.read_us() - tinterval; HAL_DMA_IRQHandler(&DMA_ADC_Handle); } void Interrupt_Init() { NVIC_SetVector(DMA2_Stream0_IRQn, (uint32_t)DMA2_Stream0_IRQHandler); HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); } #define SAMPLESADC (1024*3) union { uint32_t D[SAMPLESADC]; uint16_t C[SAMPLESADC*2]; } samples; void main() { Interrupt_Init(); Timer4_init(); adc_init_2ch(); memset(samples.D,0x5A5A,sizeof samples.D); adc_readn(samples.D,SAMPLESADC); } |
配置了串口3，输出数据：
PB7 板载蓝色led 运行状态提示
配置ADC 1 内部Vrefint通道 和ADC 2 Pa4 通道
ADC 2 配置参数
DMA 配置参数
初始化
循环输出
ADC回调
好了，输出结果正常。。
评分
查看全部评分
感谢大神Paderboy的测试！
我也是用CubeMX生成的代码，与你不同的地方是我用了TIM4来触发ADC，一次采集3K点。
但就是不工作，即没有进中断，采集的数据也没有。
我测试了去掉TIM4的触发后，是能够进入中断并正确的获取ADC数据的。TIM4作为触发的程序，我在单个ADC工作时是正常的。
你先测试下双通道同步采样，先不用tim4触发，看看正常不。。。一步一步排除。。。。
不用tim4是正常的
åééåæ¥éæ ·ï¼åå«æ¥VCCï¼GND
双通道同步采样，分别接VCC，GND
那就在adc tim4触发上找找问题。。
单通道采用tim4是正常的，双通道就是不会启动dma，冥思苦想也不得其解啊。
你试试，只用tim4 的触发去自己标定个flag 不直接去触发adc， 然后通过判断标志位，再去软启动adc 同步采样。。或者设置下 dma 和tim4 中断的优先等级差异看看。。
通过TIM4中断去触发ADC采样肯定可以，问题是TIM4的中断响应时间是个不确定值，只要是软件方法就会导致ADC每次采样就会与前面的采样有相位抖动不一致啊。