ADC reading problem on nrf51

[samo]

Hi,

I would like to read and update value of the characteristic received from AD pin AIN0. I already tested the following code, where I got very weird results (value is approximately 0x01EE all the time). The code was tested on PCA10005 board. I used AIN0 (NRF_ADC_CONFIG_INPUT_0) channel for data acquisition. Is it possible that defined NRF_ADC_CONFIG_INPUT_0 does not correspond with AIN0 pin on the PCA10005 board?

Many thanks for your help in advance.

      static void adc_configure(void)
    {	
    		
    	ret_code_t err_code = nrf_drv_adc_init(NULL, adc_event_handler);
    	 APP_ERROR_CHECK(err_code);	 
        //channel.config.config.input = NRF_ADC_CONFIG_SCALING_SUPPLY_ONE_THIRD;
    	 
    	static nrf_drv_adc_channel_t 	 adc_1   = NRF_DRV_ADC_DEFAULT_CHANNEL(NRF_ADC_CONFIG_INPUT_0);
    	adc_1.config.config.input = (uint32_t)NRF_ADC_CONFIG_SCALING_INPUT_FULL_SCALE ;
    	 nrf_drv_adc_channel_enable(&adc_1);
    		
    	err_code = nrf_drv_adc_buffer_convert(&adc_1_buf,1);	
    	APP_ERROR_CHECK(err_code);	 	 
    }
    


     static void adc_timer_handler(void * p_context)
        { 
        	
        	
        	nrf_drv_adc_sample();
        	
        	
        }

void adc_event_handler(nrf_drv_adc_evt_t const * p_event)
{
	
	 if(p_event->type == NRF_DRV_ADC_EVT_DONE)
	 {
		 nrf_adc_value_t  adc_result;
		 uint32_t 				err_code;	 

		 
		 adc_result = p_event->data.done.p_buffer[0];
		 
		 err_code = nrf_drv_adc_buffer_convert(p_event->data.done.p_buffer,1);
		 
	   err_code = ble_adcs_1_update(&m_adcs,adc_result);
	 }
	
	
}