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rajabcomp2
Joined: 22 Mar 2010
Posts: 5
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| ccs error, please help |
 Posted: Mon Mar 22, 2010 1:37 pm |
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hi guys,
I have got this error
Error 18 "pic18f4520.c" Line 0(0,0): File can not be opened
When I use my code to build it.
What does it mean ? and how can I resolve it.
Please help. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Mar 22, 2010 1:41 pm |
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It probably means you are trying to compile source code that was
written for some other compiler than CCS.
If it was CCS source code, it would say this at the top of the program:
| Code: |
#include <18F4520.h>
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rajabcomp2
Joined: 22 Mar 2010
Posts: 5
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| Posted: Mon Mar 22, 2010 2:00 pm |
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this is the code which I did to build
| Code: |
#include <18f4520.h>
#device ICD=TRUE
#fuses HS,NOLVP,NOWDT
#use delay (clock=40000000)
#use rs232 (stream=LCD, baud=9600, xmit=PIN_B5, rcv=PIN_B4)
#include <ctype.h>
#include <stdlib.h>
#define delay_s(x) delay_ms(x*1000) // delay in seconds
#define velocity_cm 34442.4 // velocity of ultrasonic wave in cm/s
#define velocity_in 13560 // velocity of ultrasonic wave in
// inches/s
#define instruction_time (40000000/4) // clock divide by 4
#define speed_50 192 // PWM on time for 50% speed
#define speed_65 211 // PWM on time for 65% speed
#define speed_75 224 // PWM on time for 75% speed
#define PWM_period 0.0004096 // Total PWM time period
// Global Variables
char display_lcd[15]; // characters diplayed on LCD
int32 left_distance, front_distance, right_distance; //from
//ultrasonic sensors
// left_distance is left_front sensor reading
// right_distance is left_back sensor reading
int16 overflow_count; // overflow count for timer 1
int value = 0; // PWM on time value in terms of #
// between 0 to 255 signed int Speed = 0; // Desired speed
int leftturn, rightturn = 0; // number of left and right turns
// Subroutines
void lcd_putc(char c[], int d); // display characters on LCD
void convert_display_lcd(int32 x, int y); // convert integers into
// ascii characters void get_value(); // get PWM on time value for speed void ultrasonic(); // read distances
void move_fwd(); // move forward
void move(); // move forward in the beginning
void increase (int amount); // increase speed by amount in %
void decrease (int amount); // decrease speed by amount in %
void turn_right(int time); // turn right for x amount of time (x is
// called time)
void turn_left(); // turn left
// Interrupts
#int_timer1 // interrupt for timer overflow void timer1_isr() // interrupt service routine
{
overflow_count++; // increment overflow counter
} |
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rnielsen
Joined: 23 Sep 2003
Posts: 852
Location: Utah
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| Posted: Tue Mar 23, 2010 8:27 am |
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You need a name for the interrupt routine and you've commented it out. Try:
| Code: | // Interrupts
#int_timer1 // interrupt for timer overflow void timer1_isr() // interrupt service routine
void timer1_isr()
{
overflow_count++; // increment overflow counter
}
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That might help a bit.
Ronald |
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rajabcomp2
Joined: 22 Mar 2010
Posts: 5
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| Posted: Tue Mar 23, 2010 11:49 am |
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ok guys, thx a lot for your help
I already solved the problem |
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