int SetADCMixer(int Tile_Id, int Block_Id, double freq, double phase)
	{
	 XRFdc_Mixer_Settings SetMixerSettings = {0};
	 XRFdc_Mixer_Settings GetMixerSettings = {0};
	 int type = RFDC_ADC;
	int ret;

	XRFdc_GetMixerSettings(&RFdcInst, XRFDC_ADC_TILE, Tile_Id, Block_Id, &GetMixerSettings);

	printf("\n******** Tile %d / Block %d ",Tile_Id,Block_Id);
	printf("\n.CoarseMixFreq = %x ",GetMixerSettings.CoarseMixFreq);
	printf("\n.MixerType = %x ",GetMixerSettings.MixerType);
	printf("\n.MixerMode = %x ",GetMixerSettings.MixerMode);
	printf("\n.Freq = %f ",GetMixerSettings.Freq);
	printf("\n.PhaseOffset = %f ",GetMixerSettings.PhaseOffset);
	printf("\n.FineMixerScale = %x ",GetMixerSettings.FineMixerScale);
	printf("\n.EventSource = %x ",GetMixerSettings.EventSource);


	GetMixerSettings.EventSource=XRFDC_EVNT_SRC_TILE; // not sure ?
	//GetMixerSettings.EventSource=XRFDC_EVNT_SRC_SYSREF;


    // change on mix frequency (Hz) ?)
    int F1 = 1e6*GetMixerSettings.Freq;
    int F2 = 1e6*freq;
    printf("\nF1= %d, F2=%d ",F1,F2);
    if (F1!=F2)
		{
		if (freq==0.0) // mixer off
			{
			printf(" OFF");
			GetMixerSettings.Freq = 0.0; // en MHz
			GetMixerSettings.PhaseOffset = 0.0;
			}	
		else
			{
			printf(" ON %f MHz Phase=%f°",freq,phase);
			GetMixerSettings.Freq = freq; // en MHz
			GetMixerSettings.PhaseOffset = phase;
			}

		ret = XRFdc_SetMixerSettings(&RFdcInst, XRFDC_ADC_TILE, Tile_Id, Block_Id, &GetMixerSettings);
		if (ret != XRFDC_SUCCESS) {
			printf("\nXRFdc_XRFdc_SetMixerSettings failed %d\r\n",ret);
			return XRFDC_FAILURE;
			}

		XRFdc_ResetNCOPhase(&RFdcInst, XRFDC_ADC_TILE, Tile_Id, Block_Id); // DDC Block0
		XRFdc_UpdateEvent(&RFdcInst, XRFDC_ADC_TILE, Tile_Id, Block_Id, XRFDC_EVENT_MIXER);
     }
     else
     {
    	 printf("\n>> Already configured @ %f MHz , nothing to do ! \n",freq);
     	 ret = SUCCESS;
     }
     return(ret);
}