[General] Need help in MplabX and pic24f

[milan.rajik]

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

 

[horace1]

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

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

XC16 has a delay function, e.g. use

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

and i dont have this file .h

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

thanks in advance

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

 

[ings]

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

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

 

[horace1]

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]

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]

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

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

            __delay_ms(100);
}

 

[ings]

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

 

[horace1]

what is the error message?

 

[ings]

delay_ms is defined twise

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

void __delay_ms() { mSecDelay(2); }

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i delete

void __delay_ms(unsigned int time);

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and when i delete

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]

in my original code replace this function

void lcd_delay() { mSecDelay(2); }

with

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

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

 

[ings]

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]

did you

#include <xc.h>

 

[ings]

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

 

[horace1]

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]

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]

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

 

[ings]

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

 

[horace1]

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.

#define FCY 400000
#include <libpic30.h>

also in main() should

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

be

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

 

[ings]

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

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

 

[horace1]

try this project - it builds Ok for me