Hi,
I am trying to see whether or not I setup the configuration of the 18F4520 pic properly for PWM. The code below is what i used: (I am using C18 C complier)

#include <p18f4520.h>

#pragma config OSC = INTIO7
#pragma config WDT = OFF
#pragma config LVP = OFF
#pragma config IESO = ON
#pragma config PWRT = ON
#pragma config BOREN = OFF
#pragma config MCLRE = ON
#pragma config CP0 = OFF
#pragma config PBADEN = OFF
#pragma config DEBUG = OFF

void main ()
{
TRISB = 0x00;

OSCCON = 0x7f;

ADCON1 = 0x01;
CMCON = 0x00;

PR2 = 0x31;
T2CONbits.TMR2ON = 1;
CCPR2L = 0x1F;
CCP2CONbits.CCP2M2 = 1;
CCP2CONbits.CCP2M3 = 1;

while (1)
{
PORTB = 0xFF; // dont worry about this, was part of another test
}
}


This builds ok, but when i try to simulate with proteus the PWM doesnt work. further investigation shows that when i attempt to assemble the code i get the following errors:

Executing: "C:\MCC18\mpasm\mpasmwin.exe" /q /p18F4520 "test.c" /l"test.lst" /e"test.err" /o"test.o" /d__DEBUG=1
Error[105] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 1 : Cannot open file (Include File "p18f4520.h" not found)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 3 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 4 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 5 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 6 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 7 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 8 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 9 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 10 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 11 : Illegal label (#pragma)
Error[121] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 12 : Illegal label (#pragma)
Error[122] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 14 : Illegal opcode (main)
Error[108] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 15 : Illegal character ({)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 16 : Found label after column 1. (TRISB)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 18 : Found label after column 1. (OSCCON)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 20 : Found label after column 1. (ADCON1)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 21 : Found label after column 1. (CMCON)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 23 : Found label after column 1. (PR2)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 24 : Found label after column 1. (T2CONbits.TMR2ON)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 25 : Found label after column 1. (CCPR2L)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 26 : Found label after column 1. (CCP2CONbits.CCP2M2)
Warning[207] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 27 : Found label after column 1. (CCP2CONbits.CCP2M3)
Error[129] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 34 : Expected (ENDW)
Error[129] C:\USERS\KEAT\DESKTOP\MPPT PROJECT\C2\TEST.C 35 : Expected (END)


I am guessing this is the root of the problem, but having searched the internet and followed many solutions. they just dont work for me. I ensured that project > build options > project setting are all correct.... Can anyone shed some light on this problem?

 

Assemble? You don't "assemble" C-source - you compile (build) it.

I'm not familiar with the MPLAB C18 compiler, but I would expect the command to run it to be something like "mpc18.exe" rather than "mpasmwin.exe". Make sure you are using a C-tool and not an assembler tool.

 

It can be your PC have infected by virus, Virus did hide permanent folder of C compiler