[General] Need help in MplabX and pic24f

milan.rajik · Nov 5, 2014

Proteus Sample Designs have Explorer 16 Board which has PIC24FJ. Use it to simulate your Projects.

horace1 · Nov 5, 2014

ings said:
i trying with this code but he display mean error in fucnction

Code:

void lcd_delay() { mSecDelay(2); } // if LCD does not work make this longer

XC16 has a delay function, e.g. use

Code:

#include <libpic30.h>
void __delay_ms(unsigned int time);

Code:
and i dont have this file .h

Code:

#include "hardware.h" #include "lcd.h"

thanks in advance

remove them - they are used in the rest of my project

ings · Nov 5, 2014

Plz Milan you talk about ISIS ? or another simulator because in ISIS i dnt find Explorer 16?

- - - Updated - - -

Horace i m adding this include but i have the ame error with LCD_Delay

horace1 · Nov 5, 2014

ings said:
Horace i m adding this include but i have the ame error with LCD_Delay

replace the call to lcd_delay() with __delay_ms()
lcd_delay() is one of my own functions driven by a timer interrupt

ings · Nov 5, 2014

but you have definned this function 2*
void __delay_ms(unsigned int time);
void __delay_ms() { mSecDelay(2);
so i m delete one of these finction but he display me a error in delay_ms

horace1 · Nov 5, 2014

as __delay_ms() uses loops for the delay you need to specify the clock frequency
e.g. this compiles OK with XC8

Code:

    #include <xc.h>        /* XC8 General Include File */
#define _XTAL_FREQ 400000
int main(void)
{

            __delay_ms(100);
}

ings · Nov 5, 2014

yes i have defined the fCY but the same error with delay_ms

horace1 · Nov 5, 2014

what is the error message?

ings · Nov 5, 2014

delay_ms is defined twise

- - - Updated - - -

main.c: In function '__delay_ms':
main.c:38:1: error: number of arguments doesn't match prototype
i thos line

Code:

void __delay_ms() { mSecDelay(2); }

- - - Updated - - -

i delete

Code:

void __delay_ms(unsigned int time);

- - - Updated - - -

and when i delete

Code:

void __delay_ms() { mSecDelay(2); }

he displa me this error
main.c: In function 'lcdNibble':
main.c:50:9: warning: unused variable 'lcd'
main.c: In function 'main':
main.c:45:1: warning: control reaches end of non-void function

horace1 · Nov 5, 2014

in my original code replace this function

Code:

void lcd_delay() { mSecDelay(2); }

with

Code:

#include <xc.h>        /* XC8 General Include File */
#define _XTAL_FREQ 400000    // replace with your frequency

void lcd_delay() { __delay_ms(2); }  //

ings · Nov 5, 2014

the error now is :
build/default/production/main.o(.text+0x6): In function `.LSM1':
: undefined reference to `___delay_ms'
make[2]: *** [dist/default/production/LCD_pic24f_hello.X.production.hex] Error 255
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2

horace1 · Nov 5, 2014

did you

Code:

#include <xc.h>

ings · Nov 5, 2014

yes
but is it ot necssarry to addd the configuation of bits or it is not important?

horace1 · Nov 6, 2014

ings said:
yes
but is it ot necssarry to addd the configuation of bits or it is not important?

you need the configuration bits to set up the oscillator, watchdog times, etc
you can see the defualt settings under Window > PIC Memory Views > Configuration Bits and generate an output file from them to include in your code for modification

see
https://microchip.wikidot.com/mplabx:view-and-set-configuration-bits
https://singularengineer.com/programming-pic-18-using-xc8-mplab-x-configuration-bits-2/

ings · Nov 6, 2014

i m adding this configuration of the bits but alo he dont workand aloso the poble with delay_ms
build/default/production/main.o(.text+0x6): In function `.LSM1':
: undefined reference to `___delay_ms'build/default/production/main.o(.text+0x6): In function `.LSM1':
: undefined reference to `___delay_ms'
another question plz iff i want o test my programm with startt kit directly i dont need any programmer (icd2 or icd3), i can directly send my programm in pic24f starter kit and test my program in the kit or it is a abligation to hve icd3?

milan.rajik · Nov 6, 2014

Why don't you zip and post the complete project files so that it can be tested.

ings · Nov 6, 2014

in this file my project in mplabx and isis i hope that yo will find tis error

horace1 · Nov 6, 2014

looked at header libpic30.h and the "16-Bit Language Tools Libraries Reference Manual” and rather than XTAL_FREQ (required for XC8) it requires FCY instruction frequency to be defined before including it
e.g.

Code:

#define FCY 400000
#include <libpic30.h>

also in main() should

Code:

   LCD_Out(1,1,"LCD Test...");

be

Code:

    lcdString(1,1,"LCD Test...");

ings · Nov 6, 2014

in this case we have this error :
main.c:38:6: error: expected identifier or '(' before '{' token
main.c: In function 'main':
main.c:181:5: warning: pointer targets in passing argument 3 of 'lcdString' differ in signedness
main.c:115:6: note: expected 'unsigned char *' but argument is of type 'char *'
make[2]: *** [build/default/production/main.o] Error 255
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
nbproject/Makefile-default.mk:94: recipe for target 'build/default/production/main.o' failed

BUILD FAILED (exit value 2, total time: 460ms)

in thi 2 line

Code:

void __delay_ms(unsigned int time);
    lcdCmd(_LCD_CLEAR);

horace1 · Nov 6, 2014

try this project - it builds Ok for me

[General] Need help in MplabX and pic24f

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