Problem with ADC DMA in STM32F0

[pemo nowak]

Posted on November 13, 2017 at 00:29

Hi.

I configured adc with dma and it doesnt work. I use stm32f030r8t6. When I use only adc and command ADC_GetConversionValue it's all ok.

Here is my code:

/**

  ******************************************************************************  * @file    main.c  * @author  Ac6  * @version V1.0  * @date    01-December-2013  * @brief   Default main function.  *******************************************************************************/&sharpinclude 'stm32f0xx.h'&sharpinclude 'stm32f0xx_gpio.h'&sharpinclude 'stm32f0xx_rcc.h'&sharpinclude 'stm32f0xx_adc.h'&sharpinclude 'stm32f0xx_dma.h'

&sharpdefine ADC_DR_ADD 0x40;

uint32_t ADC_value;

void ADC_init(void)

{    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA , ENABLE);    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;

        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;        GPIO_Init(GPIOA,&GPIO_InitStructure);        DMA_InitTypeDef DMA_INIT;

             DMA_INIT.DMA_PeripheralBaseAddr = (uint32_t*) ADC_DR_ADD;

             DMA_INIT.DMA_MemoryBaseAddr = (uint32_t)&ADC_value;             DMA_INIT.DMA_DIR = DMA_DIR_PeripheralSRC;             DMA_INIT.DMA_BufferSize = 1;             DMA_INIT.DMA_PeripheralInc = DMA_PeripheralInc_Disable;             DMA_INIT.DMA_MemoryInc = DMA_MemoryInc_Enable;             DMA_INIT.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;             DMA_INIT.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;             DMA_INIT.DMA_Mode =DMA_Mode_Circular;             DMA_INIT.DMA_Priority = DMA_Priority_High;             DMA_INIT.DMA_M2M = DMA_M2M_Disable;             DMA_Init(DMA1_Channel1, &DMA_INIT);             DMA_Cmd(DMA1_Channel1, ENABLE);    ADC_InitTypeDef ADC_INIT;

        ADC_INIT.ADC_Resolution = ADC_Resolution_10b;

        ADC_INIT.ADC_ContinuousConvMode = ENABLE;        ADC_INIT.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;        ADC_INIT.ADC_DataAlign = ADC_DataAlign_Right;        ADC_INIT.ADC_ScanDirection = ADC_ScanDirection_Upward;        ADC_Init(ADC1, &ADC_INIT);

        ADC_ChannelConfig(ADC1, ADC_Channel_1 , ADC_SampleTime_55_5Cycles);

        ADC_DMACmd(ADC1,ENABLE);        ADC_Cmd(ADC1, ENABLE);        ADC_GetCalibrationFactor(ADC1);        ADC_StartOfConversion(ADC1);}

int main(void)

{

ADC_init();

    while (1)    {    }}#dma #stm32f0 #adc