Nucleo F746 双ADC同步采样不能启动
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_HandleTypeDefTimer4Handle;
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 = &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;
uint16_t C;
} samples;
void main()
{
Interrupt_Init();
Timer4_init();
adc_init_2ch();
memset(samples.D,0x5A5A,sizeof samples.D);
adc_readn(samples.D,SAMPLESADC);
}
我用CubeMx 建了个基于767zi开发板的工程，
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。。
没用过,帮顶 本帖最后由 kylongmu 于 2016-10-9 03:02 编辑
Paderboy 发表于 2016-10-8 22:15
我用CubeMx 建了个基于767zi开发板的工程，
配置了串口3，输出数据：
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。
kylongmu 发表于 2016-10-9 02:00
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 ...
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。。。。 支持楼上，一步步排查问题。 本帖最后由 kylongmu 于 2016-10-9 13:03 编辑
Paderboy 发表于 2016-10-9 08:46
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
双通道同步采样，分别接VCC，GND
kylongmu 发表于 2016-10-9 12:58
不用tim4是正常的
双通道同步采样，分别接VCC，GND
那就在adc tim4触发上找找问题。。 Paderboy 发表于 2016-10-9 15:02
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。 把ADC 模式改为ADC_DUALMODE_ALTERTRIG也是一样的情况，难道双通道ADC就不能使用触发事件？不应该啊，CubeMX产生的代码也没有禁止触发选项，我看了数据手册也没有说有此限制啊。
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