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Guest
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| newbie question |
 Posted: Wed Dec 22, 2004 10:26 am |
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i am trying to flash an LED. using a PIC16f84a, the code works fine. but same code doesnt work for a PIC18f452???
| Code: | #include <18F452.h>
#device adc=8
#use delay(clock=4000000)
#fuses NOWDT,WDT128,XT, NOPROTECT, NOOSCSEN, BROWNOUT, BORV20, NOPUT, STVREN, NODEBUG, LVP, NOWRT, NOWRTD, NOWRTB, NOWRTC, NOCPD, NOCPB, NOEBTR, NOEBTRB
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=9) |
| Code: | void main()
{
setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_OFF);
setup_psp(PSP_DISABLED);
setup_spi(FALSE);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
while (1) {
output_high(PIN_B4);
delay_ms(500);
output_low(PIN_B4);
delay_ms(500);
}
} |
what am I missing here? |
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Guest
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| Posted: Wed Dec 22, 2004 10:53 am |
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| I forgot to tell you what is exactly the problem. the problem is that all the LED is not flashing, and is lit. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Dec 22, 2004 1:37 pm |
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1. Change the "LVP" fuse to "NOLVP", unless you know for sure
that you're using a Low Voltage Programmer. 99% of users
do not use a LVP programmer, and so should set it to NOLVP.
2. Normally the RS232 is 8 bits. Is there a reason why you
have it set to 9 bits ? |
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