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ADC multichannel (scan mode)

h_kautge
Associate

‎2010-08-17 03:30 AM

Posted on August 17, 2010 at 12:30

ADC multichannel (scan mode)

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juozas
Associate III

‎2011-05-17 05:02 AM

Posted on May 17, 2011 at 14:02

Hi, maybe it will be useful.

I am using Ride7 and standard library V3.1.0   06/19/2009.

There are program lines from my variuos files.

#define ADC1_DR_Address    ((uint32_t)0x4001244C)

DMA_InitTypeDef   DMA_InitStructure;

ADC_InitTypeDef   ADC_InitStructure;

__IO uint16_t ADC_RegularConvertedValueTab[6];

//********************************************

// from void NVIC_Configuration(void):

 /* Configure and enable ADC interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

//*******************************************************************************/

void MyConfigureADC(void)

{

/* DMA1 channel1 configuration ----------------------------------------------*/

  DMA_DeInit(DMA1_Channel1);

  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;

  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

  DMA_InitStructure.DMA_BufferSize = 6;

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;

  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;

  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;

  DMA_InitStructure.DMA_Priority = DMA_Priority_High;

  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

  DMA_Init(DMA1_Channel1, &DMA_InitStructure);

 

  /* ADC1 configuration ------------------------------------------------------*/

  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;

  ADC_InitStructure.ADC_ScanConvMode = DISABLE;

  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;

  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

  ADC_InitStructure.ADC_NbrOfChannel = 6;

  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channels configuration */

  ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_28Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 2, ADC_SampleTime_28Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 3, ADC_SampleTime_28Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 4, ADC_SampleTime_28Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 5, ADC_SampleTime_28Cycles5); // ld current

  ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 6, ADC_SampleTime_28Cycles5); //  laser power

 

  /* Regular discontinuous mode channel number configuration */

  ADC_DiscModeChannelCountConfig(ADC1, 6);

  /* Enable regular discontinuous mode */

  ADC_DiscModeCmd(ADC1, ENABLE);

  ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);

  /* Enable ADC1 DMA */

  ADC_DMACmd(ADC1, ENABLE);

 

  /* Enable ADC1 */

  ADC_Cmd(ADC1, ENABLE); 

  /* Enable ADC1 reset calibaration register */  

  ADC_ResetCalibration(ADC1);

  /* Check the end of ADC1 reset calibration register */

  while(ADC_GetResetCalibrationStatus(ADC1));

  /* Start ADC1 calibaration */

  ADC_StartCalibration(ADC1);

  /* Check the end of ADC1 calibration */

  while(ADC_GetCalibrationStatus(ADC1));

  DMA_Cmd(DMA1_Channel1,ENABLE);

 

}

//*****************************

//this is line from other sub how start conversion. I do this every 8ms:

 ADC_SoftwareStartConvCmd(ADC1,ENABLE); // command from standard library

//*********************

// do not forget to configure pins and clock

//********************************************

void ADC1_2_IRQHandler(void)

{

  /* Clear ADC1 EOC pending interrupt bit */

  ADC_ClearITPendingBit(ADC1, ADC_IT_EOC);

 

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_TEC1_TEMP_MEAS,ADC_RegularConvertedValueTab[0]);   

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_TEC2_TEMP_MEAS,ADC_RegularConvertedValueTab[1]);

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_TEC3_TEMP_MEAS,ADC_RegularConvertedValueTab[2]);

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_TEC4_TEMP_MEAS,ADC_RegularConvertedValueTab[3]);

// nuo 2010.07.29:

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_LD_CURRENT_MEAS,ADC_RegularConvertedValueTab[4]);

    SetWordDataInControllerDataArray(DATA_ENTRY_CODE_LASER_POWER_MEAS,ADC_RegularConvertedValueTab[5]);

   

}

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