const Timer$\_$A$\_$UpModeConfig upModeConfig $=\{$ TIMER$\_$A$\_$CLOCKSOURCE$\_$SMCLK$,//$ SMCLK Clock Source $($use SMCLK for higher frequency$)$ TIMER$\_$A$\_$CLOCKSOURCE$\_$DIVIDER$\_8,//$ SMCLK $/8(375$kHz if SMCLK $=3$MHz$)16384,//$ Count to $16384($Timer period$)$ TIMER$\_$A$\_$TAIE$\_$INTERRUPT$\_$DISABLE, $//$ Disable Timer ISR TIMER$\_$A$\_$CCIE$\_$CCR$0\_$INTERRUPT$\_$DISABLE, $//$ Disable CCR$0$ TIMER$\_$A$\_$DO$\_$CLEAR $//$ Clear Timer Counter $\}$; const Timer$\_$A$\_$CompareModeConfig compareConfig $=\{$ TIMER$\_$A$\_$CAPTURECOMPARE$\_$REGISTER$\_1,//$ Use CCR$1$ TIMER$\_$A$\_$CAPTURECOMPARE$\_$INTERRUPT$\_$DISABLE, $//$ Disable CCR interrupt TIMER$\_$A$\_$OUTPUTMODE$\_$SET$\_$RESET, $//$ Toggle output but $16384//16000$ Period $\}$; $/*$ Statics $*/$ static volatile uint$\_$fast$16\_$t resultsBuffer$[$UINT$8\_$MAX$]$; static volatile uint$8\_$t resPos; volatile uint$32\_$t latestADCValue; volatile uint$8\_$t sampleCount $=0$; #define SAMPLING$\_$FREQUENCY $32//$ Desired ADC sampling frequency $($Hz$)//$ Variables for timing measurement volatile uint$32\_$t timerStartValue $=0$; volatile uint$32\_$t timerEndValue $=0$; int main$($void$)\{//$ Halting WDT $($Watchdog Timer$)$ MAP$\_$WDT$\_$A$\_$holdTimer$()$; $//$ Initializing ADC module MAP$\_$CS$\_$initClockSignal$($CS$\_$ACLK, CS$\_$REFOCLK$\_$SELECT, CS$\_$CLOCK$\_$DIVIDER$\_1)$; MAP$\_$GPIO$\_$setAsPeripheralModuleFunctionInputPin$($GPIO$\_$PORT$\_$P$5,$ GPIO$\_$PIN$5,$ GPIO$\_$TERTIARY$\_$MODULE$\_$FUNCTION$)$; MAP$\_$ADC$14\_$configureConversionMemory$($ADC$\_$MEM$0,$ ADC$\_$VREFPOS$\_$AVCC$\_$VREFNEG$\_$VSS$,$ ADC$\_$INPUT$\_$A$0,$ false$)$; $/*$ Initializing ADC $($MCLK$/1/1)*/$ MAP$\_$ADC$14\_$enableModule$()$; MAP$\_$ADC$14\_$initModule$($ADC$\_$CLOCKSOURCE$\_$MCLK$,$ ADC$\_$PREDIVIDER$\_1,$ ADC$\_$DIVIDER$\_1,0)$; $/*$ Configuring GPIOs $(5\mathrm{.}5$ A$0)*/$ MAP$\_$GPIO$\_$setAsPeripheralModuleFunctionInputPin$($GPIO$\_$PORT$\_$P$5,$ GPIO$\_$PIN$5,$ GPIO$\_$TERTIARY$\_$MODULE$\_$FUNCTION$)$; $/*$ Configuring ADC Memory $*/$ MAP$\_$ADC$14\_$configureSingleSampleMode$($ADC$\_$MEM$0,$ true$)$; MAP$\_$ADC$14\_$configureConversionMemory$($ADC$\_$MEM$0,$ ADC$\_$VREFPOS$\_$AVCC$\_$VREFNEG$\_$VSS$,$ ADC$\_$INPUT$\_$A$0,$ false$)$; $/*$ Configuring Timer$\_$A in continuous mode and sourced from ACLK $*/$ MAP$\_$Timer$\_$A$\_$configureUpMode$($TIMER$\_$A$0\_$BASE, &upModeConfig$)$; $/*$ Configuring Timer$\_$A$0$ in CCR$1$ to trigger at $16000(0\mathrm{.}5$s$)*/$ MAP$\_$Timer$\_$A$\_$initCompare$($TIMER$\_$A$0\_$BASE, &compareConfig$)$; $/*$ Configuring the sample trigger to be sourced from Timer$\_$A$0$ and setting it $*$ to automatic iteration after it is triggered$*/$ MAP$\_$ADC$14\_$setSampleHoldTrigger$($ADC$\_$TRIGGER$\_$SOURCE$1,$ false$)$; $/*$ Enabling the interrupt when a conversion on channel $1$ is complete and $*$ enabling conversions $*/$ MAP$\_$ADC$14\_$enableInterrupt$($ADC$\_$INT$0)$; MAP$\_$ADC$14\_$enableConversion$()$; $/*$ Enabling Interrupts $*/$ MAP$\_$Interrupt$\_$enableInterrupt$($INT$\_$ADC$14)$; MAP$\_$Interrupt$\_$enableMaster$()$; $/*$ Starting the Timer $*/$ MAP$\_$Timer$\_$A$\_$startCounter$($TIMER$\_$A$0\_$BASE, TIMER$\_$A$\_$UP$\_$MODE$)$; $//$ Start the ADC conversion for the first sample sampleCount $=0$; $//$ Reset the sample count MAP$\_$ADC$14\_$enableConversion$()$; $//$ Wait until $10$ samples are collected while $($sampleCount $<10)\{//$ Wait for the interrupt handler to collect $10$ samples $\}//$ Stop Timer$\_$A after collecting $10$ samples timerEndValue $=$ MAP$\_$Timer$\_$A$\_$getCounterValue$($TIMER$\_$A$0\_$BASE$)$; MAP$\_$Timer$\_$A$\_$startCounter$($TIMER$\_$A$0\_$BASE, TIMER$\_$A$\_$UP$\_$MODE$)$;; uint$32\_$t adc$\_$value $=$ ADC$14\_$getResult$($ADC$\_$MEM$0)$; printf$("\%$f$",$ adc$\_$value$)$; $//$ Calculate and print the measured sampling frequency uint$32\_$t timeTaken $=$ timerStartValue $-$ timerEndValue; float actualFrequency $=10\mathrm{.}0/(($float$)$timeTaken $/32000\mathrm{.}0)$; $//$ Timer value converted to seconds printf$("$Measured Sampling Frequency: $\%\mathrm{.}2$f Hz

$",$ actualFrequency$)$; printf $("\%$u

$",$ latestADCValue$)$; $//$ Now enter the control loop while $(1)\{$ float voltage $=($latestADCValue $/16384\mathrm{.}0)*1200\mathrm{.}0$; $//$ Display ADC value and voltage in mV printf$("$ADC Value: $\%$u$,$ Voltage: $\%\mathrm{.}3$f mV

$",$ latestADCValue, voltage$)$; $//$ Delay to slow down the printing $($e$.$g$.,500$ ms$)\_\_$delay$\_$cycles$(1500000)$; $\}\}/*$ This interrupt is fired whenever a conversion is completed and placed in $*$ ADC$\_$MEM$0*/$ void ADC$14\_$IRQHandler$($void$)\{$ uint$64\_$t status; $//$ Get the status of enabled interrupts status $=$ MAP$\_$ADC$14\_$getEnabledInterruptStatus$()$; MAP$\_$ADC$14\_$clearInterruptFlag$($status$)$; $//$ Check if the ADC interrupt is for ADC$\_$MEM$0($conversion complete$)$ if $($status & ADC$\_$INT$0)\{//$ If this is the first sample, start Timer$\_$A if $($sampleCount $==0)\{$ timerStartValue $=$ MAP$\_$Timer$\_$A$\_$getCounterValue$($TIMER$\_$A$0\_$BASE$)$; $//$ Timer$\_$A start value $\}//$ Update the global variable with the latest ADC result latestADCValue $=$ ADC$14\_$getResult$($ADC$\_$MEM$0)$; $//$ Im trying to implement this $,$but the adc value keep getting zero instead of$.$ Can you guys help me$?$