Interrupt Handlers . . . GOTCHA!
I wasn't able to get my C routine to run as an Interrupt Handler even if I used this driver library routine:
ADCIntRegister(ADC_BASE,3,ADCIntHandler);
When I looked at some of the example programs, the interrupt handlers worked and they didn't use ADCIntRegister(). I realized you need to setup your own vectors in the Startup.s file.
For Example, in my main file:
//*************************************************
//
// The interrupt handler for the ADC interrupt.
//
//*************************************************
void ADCIntHandler(void)
{
unsigned long ulData;
//
// Clear the ADC interrupt.
//
ADCIntClear(ADC_BASE, 3);
//
// Read the data from the ADC sequence 3
//
ADCSequenceDataGet(ADC_BASE, 3, &ulData);
//
// Rest of your code in here
//
}
Now change this in your Startup.s file:
;*************************************************
;
; The vector table.
;
;*************************************************
Vectors
DCD IntDefaultHandler ; ADC Sequence 0
DCD IntDefaultHandler ; ADC Sequence 1
DCD IntDefaultHandler ; ADC Sequence 2
EXTERN ADCIntHandler ; VERY important!
DCD ADCIntHandler ; ADC Sequence 3
Make sure you enable ALL your interrupts and you should be on your way! Hope this helps.
-Ron
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