Re:ADC sequencer-3 not working properly
hi Jeni, im new with this kind of C programming. Im currently working with the sample sequencer 3, I just want to display the on-chip temperature on the OLED, but something its wrong, the value is getting null, I mean, I dunno why the "temperature" is 0 in my case.
Could you help me a bit ? here is my code:
#include "hw_types.h"
#include "debug.h"
#include "sysctl.h"
#include "diag.h"
#include "../displays/rit128x96x4.h"
#include "hw_memmap.h"
#include "hw_ints.h"
#include "adc.h"
#include "ustdlib.h"
#include <stdio.h>
#include "string.h"
#include "math.h"
// The error routine that is called if the driver library encounters an error.
#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif
int
main(void)
{
unsigned long temp;
unsigned long temp2;
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_8MHZ);
// Activar el clock del ADC
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC);
ADCHardwareOversampleConfigure(ADC_BASE,64);//
// Configure sample sequence 3: processor trigger, priority = 0
ADCSequenceConfigure(ADC_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);
// Configure sample sequence 3 step 0
ADCSequenceStepConfigure(ADC_BASE, 3, 0, ADC_CTL_TS | ADC_CTL_END);
//Activa el sequencer 3
ADCSequenceEnable(ADC_BASE,3);
//Activa la interrupcion
ADCIntEnable(ADC_BASE, 3);
IntEnable(INT_ADC3);
// Configurar el ADC para muestrear 500KSps
//SysCtlADCSpeedSet(SYSCTL_ADCSPEED_500KSPS);
//SysCtlADCSpeedSet(SYSCTL_ADCSPEED_1MSPS);
// Desabilitar el sample sequencer 3
//ADCSequenceDisable(ADC_BASE, 3);
// Obtiene los datos del sample sequencer 3 de la FIFO
temp2 = ADCSequenceDataGet(ADC_BASE, 3, &temp);
char szBuffer [32];
unsigned long temporal1 = temp2;
int i;
for(i = 0; i < 10; i++){
szBuffer[i] = (temporal1%10) +0x30;
temporal1 = temporal1/10;
}
RIT128x96x4Init(1000000);
RIT128x96x4StringDraw(&szBuffer, 0, 24, 15);
DiagExit(0);
}
Could you help me please ? =(,
Thanks in advance
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