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˫��ADC�����ɼ����Ҳɵ���ADC1��ADC2��ֵ��һ���ģ�����Ϊʲô�����Ѿ����óɽ���ģʽ�ˡ�
ALIGN_32BYTES (__attribute__ ((at(0x24000000))) __IO uint32_t ADC_ConvertedValue = 0);
extern float ADC_vol;
ADC_HandleTypeDef ADC1_Handle;
ADC_HandleTypeDef ADC2_Handle;
DMA_HandleTypeDef hdma_adc;
ADC_MultiModeTypeDef ADC_multimode;
static void ADC_GPIO_Mode_Config(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
__GPIOB_CLK_ENABLE();
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pin = GPIO_PIN_1;
/* ����Ϊģ�����룬����Ҫ�������� */
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
static void ADC_Mode_Config(void)
{
ADC_ChannelConfTypeDef ADC_Config;
RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit;
/* ����ADC3ʱ��Դ */
/* HSE Frequency(Hz) = 25000000 */
/* PLL_M = 5 */
/* PLL_N = 160 */
/* PLL_P = 25 */
/* PLL_Q = 2 */
/* PLL_R = 2 */
/* ADC_ker_clk = 32000000 */
RCC_PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
RCC_PeriphClkInit.PLL2.PLL2FRACN = 0;
RCC_PeriphClkInit.PLL2.PLL2M = 5;
RCC_PeriphClkInit.PLL2.PLL2N = 180;
RCC_PeriphClkInit.PLL2.PLL2P = 8;
RCC_PeriphClkInit.PLL2.PLL2Q = 2;
RCC_PeriphClkInit.PLL2.PLL2R = 2;
RCC_PeriphClkInit.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_2;
RCC_PeriphClkInit.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE;
RCC_PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2;
HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit);
__HAL_RCC_ADC12_CLK_ENABLE();
__HAL_RCC_DMA1_CLK_ENABLE();
//ѡ��DMA1��Stream1
hdma_adc.Instance = DMA1_Stream0;
//ADC1��DMA����
hdma_adc.Init.Request = DMA_REQUEST_ADC1;
//���䷽��������-���ڴ�
hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
//������ַ������
hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
//�ڴ���ַ������
hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_adc.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
//DMAѭ������
hdma_adc.Init.Mode = DMA_CIRCULAR;
//DMA���������ȼ�����
hdma_adc.Init.Priority = DMA_PRIORITY_LOW;
//FIFOģʽ�ر�
hdma_adc.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
//DMA��ʼ��
HAL_DMA_Init(&hdma_adc);
//hdma_adc��ADC_Handle.DMA_Handle����
__HAL_LINKDMA(&ADC1_Handle,DMA_Handle,hdma_adc);
ADC1_Handle.Instance = ADC1;
//ʹ��Boostģʽ
ADC1_Handle.Init.BoostMode = ENABLE;
//ADCʱ��1��Ƶ
ADC1_Handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
//ʹ������ת��ģʽ
ADC1_Handle.Init.ContinuousConvMode = DISABLE;
//���ݴ��������ݼĴ�����
ADC1_Handle.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
//�رղ�����ת��ģʽ
ADC1_Handle.Init.DiscontinuousConvMode = DISABLE;
// ADC1_Handle.Init.NbrOfDiscConversion = 0;
// ADC1_Handle.Init.NbrOfConversion = 1;
//����ת��
ADC1_Handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
ADC1_Handle.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T3_TRGO;
ADC1_Handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
//�رյ����Զ��ȴ�
ADC1_Handle.Init.LowPowerAutoWait = DISABLE;
//��������ʱ������д��
ADC1_Handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
ADC1_Handle.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
//��ʹ�ܹ�����ģʽ
ADC1_Handle.Init.OversamplingMode = DISABLE;
//�ֱ���Ϊ��16bit
ADC1_Handle.Init.Resolution = ADC_RESOLUTION_12B;
//��ʹ�ܶ�ͨ��ɨ��
ADC1_Handle.Init.ScanConvMode = DISABLE;
//��ʼ�� ADC_MASTER
HAL_ADC_Init(&ADC1_Handle);
ADC2_Handle.Instance = ADC2;
ADC2_Handle.Init.BoostMode = ENABLE;
//ADCʱ��1��Ƶ
ADC2_Handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
//ʹ������ת��ģʽ
ADC2_Handle.Init.ContinuousConvMode = DISABLE;
//���ݴ��������ݼĴ�����
ADC2_Handle.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
//�رղ�����ת��ģʽ
ADC2_Handle.Init.DiscontinuousConvMode = DISABLE;
// ADC2_Handle.Init.NbrOfDiscConversion = 0;
// ADC2_Handle.Init.NbrOfConversion = 1;
//����ת��
ADC2_Handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
ADC2_Handle.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T3_TRGO;
ADC2_Handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
//�رյ����Զ��ȴ�
ADC2_Handle.Init.LowPowerAutoWait = DISABLE;
//��������ʱ������д��
ADC2_Handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
ADC2_Handle.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
//��ʹ�ܹ�����ģʽ
ADC2_Handle.Init.OversamplingMode = DISABLE;
//�ֱ���Ϊ��16bit
ADC2_Handle.Init.Resolution = ADC_RESOLUTION_12B;
//��ʹ�ܶ�ͨ��ɨ��
ADC2_Handle.Init.ScanConvMode = DISABLE;
HAL_ADC_Init(&ADC2_Handle);
ADC_Config.Channel = ADC_CHANNEL_5;
//ת��˳��Ϊ1
ADC_Config.Rank = ADC_REGULAR_RANK_1;
ADC_Config.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
//��ʹ�ò��������Ĺ���
ADC_Config.SingleDiff = ADC_SINGLE_ENDED;
//����ADC_MASTERͨ��
HAL_ADC_ConfigChannel(&ADC1_Handle, &ADC_Config);
ADC_Config.Channel = ADC_CHANNEL_5;
//ת��˳��Ϊ1
ADC_Config.Rank = ADC_REGULAR_RANK_1;
ADC_Config.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
//��ʹ�ò��������Ĺ���
ADC_Config.SingleDiff = ADC_SINGLE_ENDED;
//����ADC_SLAVEͨ��
HAL_ADC_ConfigChannel(&ADC2_Handle, &ADC_Config);
//ʹ��ADC1��2
ADC_Enable(&ADC1_Handle);
ADC_Enable(&ADC2_Handle);
ADC_multimode.Mode = ADC_DUALMODE_INTERL;
//���ݸ�ʽ
ADC_multimode.DualModeData = ADC_DUALMODEDATAFORMAT_32_10_BITS;
//ADC_MASTER��ADC_SLAVE��������3��ADCʱ��
ADC_multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_4CYCLES;
//ADC˫��ģʽ���ó�ʼ��
HAL_ADCEx_MultiModeConfigChannel(&ADC1_Handle, &ADC_multimode);
//ʹ��DMA,�˺����Ὺ��DMA�жϣ���Ҫ�û���������DMA�ж����ȼ�
HAL_ADCEx_MultiModeStart_DMA(&ADC1_Handle, (uint32_t*)&ADC_ConvertedValue, 2);
}
void Rheostat_DMA_NVIC_Config(void)
{
HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);
}
void ADC_Init(void)
{
ADC_GPIO_Mode_Config();
ADC_Mode_Config();
Rheostat_DMA_NVIC_Config();
HAL_ADC_Start(&ADC1_Handle);
HAL_ADC_Start(&ADC2_Handle);
}
�����ǻص�������ȡADֵ
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle) //ADC�ص����������ڶ�ȡADֵ
{
ADC_ConvertedValue = HAL_ADCEx_MultiModeGetValue(&ADC1_Handle);
static int j=0;
//ADC_convol1����ֵ�����ڵ�16λ��ADC_convol2����ֵ�����ڸ�16λ��
ADC_convol1[2*j] = (uint16_t)(ADC_ConvertedValue&0x0000ffff);
ADC_convol1[2*j+1] = (uint16_t)((ADC_ConvertedValue&0xffff0000)>>16);
j++;
if(j>=2000)
{
j=0;
__HAL_RCC_TIM3_CLK_DISABLE();
DMA_finsh=1;
}
}
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������ 2020-4-17 02:06:08
������ 2020-4-17 08:43:18
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