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AD1_OnMeasurementComplete Never Entered

Question asked by Thomas Olenik on Oct 26, 2014
Latest reply on Oct 27, 2014 by Dawei You


I am have issues with implementing an AD measurement with the FRDM-KE06Z.  Here is my code to start the measurement that I have placed within a app_Init method that is called from main along with SPI and GPIO Init (those seem to be working fine):

   AD1device = AD1_Init((LDD_TUserData *)NULL);

   AD1_measurement[0]=1; /*Used to confirm the value is being displayed*/

   measure_count = 0; /*incremented in OnMeasureComplete*/

   LDD_TError Error;

   Error = AD1_SelectSampleGroup(AD1device, 0U); /*Select sample group 0*/

   Error = AD1_StartLoopMeasurement(AD1device); /*Start continuous measurement*/

 

In Events.c I have:

void AD1_OnMeasurementComplete(LDD_TUserData *UserDataPtr)

{

  /* Write your code here ... */

measure_count++;

LDD_TError Error;

Error = AD1_GetMeasuredValues(UserDataPtr, (LDD_TData *)AD1_measurement);

}

 

The rest of my AD code is as generated by Processor Expert for the ADC_LDD component.

 

I am displaying the AD1_measurement and a measure_count on an LCD, and they never change from what I set them at.  I have confirmed if I change the values manually in code, the display shows the new values as expected.  So the problem is not with my display functions.  This tells me that the Ad1_OnMeasureComplete within Event.c is never entered.  Otherwise I would at least see measure_count update on my display.

 

Is there something I am doing wrong to start the measurement? What are some other things that I should check?

 

The this I am trying to read the output from an AD595 thermocouple amplifier IC.  I have measured the output from the AD595 at room temperature at around 200 mV which should equate to 20 C.

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