void ADC_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

/* Enable ADC1, DMA2 and GPIO clocks ****************************************/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

/* DMA2 Stream0 channel2 configuration **************************************/
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_ADDRESS;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC1ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
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_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream0, ENABLE);

/* Configure ADC1 Channel4 pin as analog input ******************************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);

/* ADC Common Init **********************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);

/* ADC1 Init ****************************************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
// Режим сканирования
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
// Непрерывное преобразование
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);

/* Enable and set the ADC interrupt to the highest priority */
NVIC_InitStructure.NVIC_IRQChannel = ADC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/* ADC1 regular channel4 configuration *************************************/
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_112Cycles);

/* Enable DMA request after last transfer (Single-ADC mode) */
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

/* Enable ADC3 DMA */
ADC_DMACmd(ADC1, ENABLE);

/* Enable ADC3 */
ADC_Cmd(ADC1, ENABLE);
}

void ADC_IRQHandler(void)
{
  STM_EVAL_LEDToggle(LED2);

  /* Clear the interrupt flag. */
  ADC_ClearFlag(ADC1, ADC_FLAG_EOC);

}

void ADC_IRQHandler(void)
{
STM_EVAL_LEDOn(LED2);

portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;

/* ADC1 received */
if (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == SET)
{
/* Give the semaphore to wakeup ADC task */
xSemaphoreGiveFromISR( s_xSemaphore, &xHigherPriorityTaskWoken );
}

/* Clear the interrupt flag. */
ADC_ClearFlag(ADC1, ADC_FLAG_EOC);

/* Switch tasks if necessary. */
if( xHigherPriorityTaskWoken != pdFALSE )
{
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
}

}

.....
      for(;; )
      {
        if (xSemaphoreTake( s_xSemaphore, portMAX_DELAY )==pdTRUE)
        {
          text[1] = ADC1ConvertedValue;
          text[0] = ADC1ConvertedValue >> 8;

          netbuf_ref(buf1, text, sizeof(text));
          netconn_send(connn, buf1);
        }
     }