ADC with TivaWare TM4C123GH6PM

Hey guys,

I'm trying to configure the ADC on TM4C123GH6PM using the TivaWare Library since i'm using the grLib in my project.

Here is the exemple for measuring the temperature (Lab 5).

I'm trying to modify the code to measure a voltage from port PE3.

I will be very gratefull if someone can help me with that !

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/debug.h"
#include "driverlib/sysctl.h"
#include "driverlib/adc.h"
#define TARGET_IS_BLIZZARD_RB1
#include "driverlib/rom.h"

int main(void)
{
	uint32_t ui32ADC0Value[4];
	volatile uint32_t ui32TempAvg;
	volatile uint32_t ui32TempValueC;
	volatile uint32_t ui32TempValueF;

	ROM_SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN|SYSCTL_XTAL_16MHZ);

	ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
	ROM_ADCHardwareOversampleConfigure(ADC0_BASE, 64);

	ROM_ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0);
	ROM_ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_TS);
	ROM_ADCSequenceStepConfigure(ADC0_BASE, 1, 1, ADC_CTL_TS);
	ROM_ADCSequenceStepConfigure(ADC0_BASE, 1, 2, ADC_CTL_TS);
	ROM_ADCSequenceStepConfigure(ADC0_BASE,1,3,ADC_CTL_TS|ADC_CTL_IE|ADC_CTL_END);
	ROM_ADCSequenceEnable(ADC0_BASE, 1);

	while(1)
	{
		ROM_ADCIntClear(ADC0_BASE, 1);
		ROM_ADCProcessorTrigger(ADC0_BASE, 1);

	   while(!ROM_ADCIntStatus(ADC0_BASE, 1, false))
	   {
	   }

	   ROM_ADCSequenceDataGet(ADC0_BASE, 1, ui32ADC0Value);
	   ui32TempAvg = (ui32ADC0Value[0] + ui32ADC0Value[1] + ui32ADC0Value[2] + ui32ADC0Value[3] + 2)/4;
	   ui32TempValueC = (1475 - ((2475 * ui32TempAvg)) / 4096)/10;
	   ui32TempValueF = ((ui32TempValueC * 9) + 160) / 5;
	}
}