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CombatWombat
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| Spot the error (should be easy) |
 Posted: Fri Sep 12, 2008 6:49 pm |
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Hello,
I am trying to compile a very (very) simple program to learn the C (PCM V4) compiler. I know a bit of assembly using MPLAB already.
I am using a PIC16F690 on the Pickit2 low pin count demo board and using a Pickit2 for programming.
When I flash the chip with a program written in assembly, it works as expected (lights are flashing).
When I compile and flash the following program, my light stays on solid.
| Code: | #include "D:\Projects\PIC\test2\test2.h"
void main()
{
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_spi(FALSE);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_oscillator(False);
set_tris_c(0x00);
while(1)
{
output_high(PIN_C0);
delay_ms(1000);
output_low(PIN_C0);
delay_ms(1000);
}
} |
The header (compiler generated) looks like so,
| Code: | #include <16F690.h>
#device adc=8
#FUSES NOWDT //No Watch Dog Timer
#FUSES INTRC //Internal RC Osc
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOMCLR //Master Clear pin used for I/O
#FUSES NOCPD //No EE protection
#FUSES NOPUT //No Power Up Timer
#FUSES IESO //Internal External Switch Over mode enabled
#FUSES FCMEN //Fail-safe clock monitor enabled
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8) |
I thought maybe the WDT or brownout was tripping, so I turned those off. Once programmed the LED on port C0 turns on and stays on.
Ideas? Im running out. Are there instructions for loading a C program into MPLAB to use the simulator? I have not found them.
Thank you. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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jfarkas
Joined: 07 Dec 2006
Posts: 4
Location: Croatia
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| Datasheet |
| Posted: Sat Sep 13, 2008 3:52 am |
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This could be problem....
#FUSES INTRC //Internal RC Osc
#use delay(clock=20000000) ??????????? |
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Gerhard
Joined: 30 Aug 2007
Posts: 144
Location: South Africa
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| Posted: Sat Sep 13, 2008 8:26 am |
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The internal oscilator on that pic is running at 4M. Just change that line
| Code: | #FUSES INTRC //Internal RC Osc
#use delay(clock=20000000) |
To
| Code: | #FUSES INTRC //Internal RC Osc
#use delay(clock=4M) |
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