Loop problem

[Voltagerange]

void main()
{
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF|ADC_TAD_MUL_0);
setup_psp(PSP_DISABLED);
setup_spi(SPI_SS_DISABLED);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
//setup_oscillator(OSC_8MHZ|OSC_TIMER1);

disable_interrupts (global);

fputs("Test", SOFT_UART);
fputs("Bla", SOFT_UART);

}


Anyone knows why this little piece of code shows me this?

Test
Bla
Test
Bla
etc etc.

It looks like my program hangs in a non defined loop.

I hope you guys can help me out.

Thanks alot

[andrewg]

You don't give your PIC or your fuses, so I'll assume you've got a part where if the WDT is enabled via fuses, it cannot be disabled via software (setup_wdt).

Your code drop off the end, the pic goes to sleep, and the wdt restarts the pic a short while later.
_________________
Andrew

[Voltagerange]

#include <18F4320.h>
#device adc=8

#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES INTRC_IO //Internal RC Osc, no CLKOUT
#FUSES FCMEN //Fail-safe clock monitor enabled
#FUSES BROWNOUT //Reset when brownout detected
#FUSES BORV20 //Brownout reset at 2.0V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES STVREN //Stack full/underflow will cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES IESO //Internal External Switch Over mode enabled
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES MCLR //Master Clear pin enabled
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOCPB //No Boot Block code protection
#FUSES NOWRTB //Boot block not write protected
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET

#use delay(clock=8000000)
#use rs232(baud=4800,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8, stream=HW_UART)
#use rs232(baud=9600,parity=N,xmit=PIN_D0,rcv=PIN_D1,bits=8, stream=SOFT_UART)

Also my whole header file.

[RLScott]

I'm not sure why your program is looping, especially since you have the NOWDT fuse specified. But why are you allowing your program to fall off the end? This calls for some experiments. To see if something is resetting your PIC, change the program to:

[Wayne_]

Look at the .lst file and see what the last instruction is after the last line in main.

[D-Kens]

I'd suggest that you read the restart_cause() value to check the reason why your PIC is rebooting.

[andrewg]

You do have a pullup on MCLR?
_________________
Andrew

[RLScott]

Apparently the OP (Voltagerange) has lost interest in his question. He has not answered any of the helpful questions or suggestions that have been posed for the last 5 days.

Robert Scott