STM32cube库配置双ADC的同步规则采样

Paderboy 回答时间：2016-10-12 08:38:37

Ysheng169 发表于 2016-10-11 22:00
我也是这样配置的，但是遇到问题：电压增大时，读出来的数据是变小的，电压调小，读出来的却是变大。
我 ...

stm32 你上5v？不怕烧了啊。。。没遇到你3.3v能读出2.8v。。最好能把工程弄上来。。看看什么问题。。

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Ysheng169 回答时间：2016-10-12 09:55:28

Paderboy 发表于 2016-10-12 08:38
stm32 你上5v？不怕烧了啊。。。没遇到你3.3v能读出2.8v。。最好能把工程弄上来。。看看什么问题。。 ...

运算的时候出错了，现在解决了，但是发现精确度不高啊，外部给2.4V, ad转换后是2.543V，请问这怎样解决

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小学痞回答时间：2017-5-1 22:45:33

楼主，你那个问题解决了吗，能把你cubemx代码发下嘛，
你最后的问题，可以通过标定adc来解决。比如把adc的输出电压和给定电压一一对应，然后通过数值分析，标定

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小学痞回答时间：2017-5-1 22:51:11

叫最小二乘法，可以手动分段标定，提高精确度

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清竹雨仙回答时间：2017-11-14 22:58:42

Ysheng169 发表于 2016-10-12 09:55
运算的时候出错了，现在解决了，但是发现精确度不高啊，外部给2.4V, ad转换后是2.543V，请问这怎样解决 ...

估计你没校验

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vanaua 回答时间：2020-3-5 17:08:14

Paderboy 发表于 2016-2-25 15:21
我这个测试好了。直接用CubeMx 4.13 配置好直接生成后，
HAL_ADC_Start(&hadc2); 初始化好后先启动ADC2 工 ...

兄弟，你好，最近我也在做h7系列的adc同步采样问题，但跟你不同的是，我的是两路adc，每路adc下面还各有两个通道，这我就不明白该怎么设置了，可以把你这个工程代码让我参考一下吗？万分感谢了。邮箱：vanaua@163.com

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vanaua 回答时间：2020-3-5 17:11:55

Paderboy 发表于 2016-2-25 15:21
我这个测试好了。直接用CubeMx 4.13 配置好直接生成后，
HAL_ADC_Start(&hadc2); 初始化好后先启动ADC2 工 ...

static void MX_ADC1_Init(void)
{
/* USER CODE BEGIN ADC1_Init 0 */
/* USER CODE END ADC1_Init 0 */
ADC_MultiModeTypeDef multimode = {0};
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC1_Init 1 */
/* USER CODE END ADC1_Init 1 */
/** Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; ////4分频，ADCCLK=PER_CK/4=64/4=16MHZ
hadc1.Init.Resolution = ADC_RESOLUTION_16B;
hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
// hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc1.Init.EOCSelection = DISABLE;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.NbrOfConversion = 2;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
hadc1.Init.OversamplingMode = DISABLE;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure the ADC multi-mode
*/
multimode.Mode = ADC_DUALMODE_REGSIMULT;
multimode.DualModeData = ADC_DUALMODEDATAFORMAT_32_10_BITS;
multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_5CYCLES;
if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_16;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_17;
sConfig.Rank = ADC_REGULAR_RANK_2;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC1_Init 2 */
// if(HAL_ADCEx_Calibration_Start(&hadc1,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED) != HAL_OK)
// {
// Error_Handler();
// }
/* USER CODE END ADC1_Init 2 */
}
/**
* @brief ADC2 Initialization Function
* @param None
* @retval None
*/
static void MX_ADC2_Init(void)
{
/* USER CODE BEGIN ADC2_Init 0 */
/* USER CODE END ADC2_Init 0 */
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC2_Init 1 */
ADC_MultiModeTypeDef multimode = {0};
/* USER CODE END ADC2_Init 1 */
/** Common config
*/
hadc2.Instance = ADC2;
hadc2.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc2.Init.Resolution = ADC_RESOLUTION_16B;
hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE;
// hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc2.Init.EOCSelection = DISABLE;
hadc2.Init.LowPowerAutoWait = DISABLE;
hadc2.Init.ContinuousConvMode = ENABLE;
hadc2.Init.NbrOfConversion = 2;
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
hadc2.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
hadc2.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
hadc2.Init.OversamplingMode = DISABLE;
if (HAL_ADC_Init(&hadc2) != HAL_OK)
{
Error_Handler();
}
HAL_ADCEx_Calibration_Start(&hadc1,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED);
multimode.Mode = ADC_DUALMODE_REGSIMULT;
multimode.DualModeData = ADC_DUALMODEDATAFORMAT_32_10_BITS;
multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_5CYCLES;
if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_4;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_8;
sConfig.Rank = ADC_REGULAR_RANK_2;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC2_Init 2 */
// if(HAL_ADCEx_Calibration_Start(&hadc2,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED) != HAL_OK)
// {
// Error_Handler();
// }
/* USER CODE END ADC2_Init 2 */
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
__HAL_RCC_DMA2_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream1_IRQn);
/* DMA2_Stream0_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 1);
HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
}

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void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hadc->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* Peripheral clock enable */
HAL_RCC_ADC12_CLK_ENABLED++;
if(HAL_RCC_ADC12_CLK_ENABLED==1){
__HAL_RCC_ADC12_CLK_ENABLE();
}
__HAL_RCC_GPIOA_CLK_ENABLE();
/**ADC1 GPIO Configuration
PA1 ------> ADC1_INP17
PA0 ------> ADC1_INP16
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* ADC1 DMA Init */
/* ADC1 Init */
hdma_adc1.Instance = DMA1_Stream1;
hdma_adc1.Init.Request = DMA_REQUEST_ADC1;
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_MDATAALIGN_WORD;
hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc1.Init.Mode = DMA_CIRCULAR;
hdma_adc1.Init.Priority = DMA_PRIORITY_HIGH;
hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_adc1) != HAL_OK)
{
Error_Handler();
}
__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_ADC12_CLK_ENABLED++;
if(HAL_RCC_ADC12_CLK_ENABLED==1){
__HAL_RCC_ADC12_CLK_ENABLE();
}
__HAL_RCC_GPIOC_CLK_ENABLE();
/**ADC2 GPIO Configuration
PC4 ------> ADC2_INP4
PC5 ------> ADC2_INP8
*/
GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/* ADC2 DMA Init */
/* ADC2 Init */
hdma_adc2.Instance = DMA2_Stream0;
hdma_adc2.Init.Request = DMA_REQUEST_ADC2;
hdma_adc2.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_adc2.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc2.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc2.Init.PeriphDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc2.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc2.Init.Mode = DMA_CIRCULAR;
hdma_adc2.Init.Priority = DMA_PRIORITY_HIGH;
hdma_adc2.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_adc2) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(hadc,DMA_Handle,hdma_adc2);
/* USER CODE BEGIN ADC2_MspInit 1 */
/* USER CODE END ADC2_MspInit 1 */
}
}

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void DMA1_Stream1_IRQHandler(void)
{
/* USER CODE BEGIN DMA1_Stream1_IRQn 0 */
/* USER CODE END DMA1_Stream1_IRQn 0 */
HAL_DMA_IRQHandler(&hdma_adc1);
/* USER CODE BEGIN DMA1_Stream1_IRQn 1 */
/* USER CODE END DMA1_Stream1_IRQn 1 */
}

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//dma中断adc进行取数据,该函数会被DMA1_Stream1_IRQHandler调用
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
uint16_t i,j=0;
//SCB_DisableDCache();
//对于F7带Cache需要注意，读取DMA前先关闭
flag=1;
if(flag)
{
/* USER CODE END WHILE */
//SCB_InvalidateDCache_by_Addr((uint32_t *)g_usADC1_Data, sizeof(g_usADC1_Data));
SCB_DisableDCache();
for(i=0;i<200;)
{
adc1_rx1[j] = g_usADC1_Data[i]&0xffff;
adc1_rx2[j] = g_usADC1_Data[i+1]&0xffff;
adc2_rx1[j] = g_usADC1_Data[i]>>16;
adc2_rx2[j] = g_usADC1_Data[i+1]>>16;
j++;
i+=2;
}
}
flag =0;
SCB_EnableDCache();
//对于F7带Cache需要注意，读取DMA完成后再打开
}

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vanaua 回答时间：2020-3-5 17:13:06

最后在main函数中，使用

//HAL_ADC_Start(&hadc2);
ADC_Enable(&hadc2);
ADC12_COMMON->CCR|=0x10<<14;
HAL_ADCEx_MultiModeStart_DMA(&hadc1, (uint32_t *)g_usADC1_Data, 200);

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但是，我在接收数据的时候总是失败，这是怎么回事呀

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STM32cube库配置双ADC的同步规则采样

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