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- 2015-9-7
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- 141 小时
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5金钱
我5通道转换,DMA传输,可是接受数组里只有第一个有第一通道的转换结果。程序在下面,求大神帮忙看看!
uint32_t ADC_ConvertedValue[5]={1,1,1,1,1};
main()
{
MX_DMA_Init();
MX_ADC_Init();
MX_GPIO_Init();
HAL_ADC_Start_DMA(&hadc,&ADC_ConvertedValue[0],5);
}
void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc.Init.LowPowerAutoWait = DISABLE;
hadc.Init.LowPowerAutoPowerOff = DISABLE;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.ContinuousConvMode = ENABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc.Init.DMAContinuousRequests = ENABLE;
hadc.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
HAL_ADC_Init(&hadc);
HAL_ADCEx_Calibration_Start(&hadc);
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_0;
// sConfig.Rank =ADC_RANK_NONE;
sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
sConfig.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_1;
//sConfig.Rank =ADC_RANK_CHANNEL_NUMBER;
// sConfig.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_2;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_3;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_4;
HAL_ADC_ConfigChannel(&hadc, &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 */
__ADC1_CLK_ENABLE();
/**ADC GPIO Configuration
PA0 ------> ADC_IN0
PA1 ------> ADC_IN1
PA2 ------> ADC_IN2
PA3 ------> ADC_IN3
PA4 ------> ADC_IN4
*/
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
|GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* Peripheral DMA init*/
hdma_adc.Instance = DMA1_Channel1;
hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
//hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc.Init.PeriphInc = DMA_PINC_ENABLE;
hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc.Init.PeriphDataAlignment =DMA_PDATAALIGN_WORD;
hdma_adc.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc.Init.Mode = DMA_CIRCULAR;
hdma_adc.Init.Priority = DMA_PRIORITY_VERY_HIGH;
HAL_DMA_Init(&hdma_adc);
__HAL_LINKDMA(hadc,DMA_Handle,hdma_adc);
/* Peripheral interrupt init*/
HAL_NVIC_SetPriority(ADC1_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(ADC1_IRQn);
/* USER CODE BEGIN ADC1_MspInit 1 */
/* USER CODE END ADC1_MspInit 1 */
}
}
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