Error 499 undefined symbol - Исправление ошибок и поиск оптимальных решений проблем

Interrupt

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I can’t get this code to compile/link please assist.
I don’t understand why the symbol «printVal» is undefined??!!

void displayVoltage(void)
{
 while(PIR1bits.ADIF == 1) //(wait for conversion to complete )
         {
    /*varibles*/
     unsigned int ADCcovt =0;
     unsigned char printVal[6]; //static
     unsigned char *ptrPrintVal; //static
     ptrPrintVal = &printVal;                 PIR1bits.ADIF = 0;
                        ADCcovt = ADRESH<<8;               //adc conversion concatenation  
            ADCcovt = ADCcovt |ADRESL;       
            itoa (ptrPrintVal, ADCcovt, 10);    //change int to char str
            lcd_CMD(ClearDisplay);
            lcd_WriteString(ptrPrintVal);
             __delay_ms(Delay100); 
                              }
    return;
}

after reading this post (wont let me post it…please take my word I’ve tried to research this error! )
I thought I had it cracked but changing

unsigned char printVal[];

unsigned char printVal[6];

didn’t help???

:0: error: (499) undefined symbol:
    _printVal(dist/default/productionADC3I2Clcd.X.production.obj) 
(908) exit status = 1
nbproject/Makefile-default.mk:215: recipe for target 'dist/default/production/ADC3I2Clcd.X.production.hex' failed
make[2]: Leaving directory 'F:/PIC16F1824aug2015/ADC3I2Clcd/ADC3I2Clcd.X'
nbproject/Makefile-default.mk:78: recipe for target '.build-conf' failed
make[1]: Leaving directory 'F:/PIC16F1824aug2015/ADC3I2Clcd/ADC3I2Clcd.X'
nbproject/Makefile-impl.mk:39: recipe for target '.build-impl' failed
make[2]: *** [dist/default/production/ADC3I2Clcd.X.production.hex] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2BUILD FAILED (exit value 2, total time: 11s)

post edited by Interrupt — 2015/08/24 18:02:28

cobusve

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Re: :0: error: (499) undefined symbol:

2015/08/24 18:17:11

(permalink)

Your code cannot compile without a «main» function, so we are guessing here with half of your project.

That said, array identifiers ARE pointers, but the compiler is nice about it so doing ptrPrintVal = &printVal; or doing ptrPrintVal = printVal; is exactly the same thing.

I took your program, added a main which calls this function and commented out all the functions for which you did not supply the code (e.g. lcd_CMD and lcd_WriteString(ptrPrintVal)) and it compiles just fine.

My guess is that you are attempting to access printVal from scope where it is not defined, and that the bug is not in the part of the code which you have posted here.

ric

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Re: :0: error: (499) undefined symbol:

2015/08/24 18:22:47

(permalink)

Interrupt
…
I thought I had it cracked but changing
unsigned char printVal[]; 
to
unsigned char printVal[6];
didn’t help???

Certainly, not declaring the buffer size would be a bug.
As cobusve stated, we can only guess if you don’t show the complete test code.
That snippet by itself can’t be compiled, and your problem is probably elsewhere.

post edited by ric — 2015/08/24 18:23:52

I also post at: PicForum
To get a useful answer, always state which PIC you are using!

Interrupt

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Re: :0: error: (499) undefined symbol:

2015/08/24 18:32:40

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Thanks Guys

I found it! I was trying to split my code into modules and I had a global variables of the same name in on of the header files …..thanks for the assistance!

NKurzman

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Re: :0: error: (499) undefined symbol:

2015/08/25 07:03:52

(permalink)

You should not be defining variables in header files.

Источник

I’m trying to use a globalVar.h to get my main.c cleaner and tidied up.
But I get many errors that me and my colleagues can’t understand or solve.

Would some please be so kind and give me a hint what I could have done wrong?

I’m using MPLAB X IDE 3.60 and MPLAB XC8 for my PIC12F1572.

// main.c

#include "mcc_generated_files/mcc.h"
#include "globalVar.h"

void SDiagnose(sd_state_t SD_STATE);

void main(void)
{
    // Initialize the device
    SYSTEM_Initialize();

    INTERRUPT_GlobalInterruptEnable();
    INTERRUPT_PeripheralInterruptEnable();

    while (1)
    {
        if (gFlag_SDAktiv)          // Selbstdiagnose wird alle 180 Sekunden aktiviert
        {
            switch(gCnt_SD)
            {
            case 180:
                SD_STATE = START;
                SDiagnose(SD_STATE);                     //SD-PIN auf LOW ziehen, Laden starten
                break;

            case 190:
                SD_STATE = STARTMESSEN;
                SDiagnose(SD_STATE);               //Messung des Wertes während des Ladens und der Rekuperation starten
                break;

            default:
                break;

            }
        }   
    }
}

void SDiagnose(sd_state_t SD_STATE)
{ 
    switch(SD_STATE) 
    {
        case START:
            PIN_SDIAGNOSE_SetDigitalOutput();
            PIN_SDIAGNOSE_SetLow();
            break;

        case STARTMESSEN: 
            ADC1_StartConversion();
            break;

        default:  
            break;      
    }
}

//globalVar.h

#include <xc.h> // include processor files - each processor file is guarded.  


#ifndef EXTERN
    #define EXTERN extern
#endif


typedef enum {START, STOP, STARTMESSEN, MESSEN1, MESSEN2, FREIGEBEN} 
        sd_state_t;



EXTERN volatile sd_state_t SD_STATE;

EXTERN volatile unsigned char gFlag_AdcReady = 0;

EXTERN volatile unsigned char gFlag_SDAktiv = 0;

EXTERN volatile unsigned char gCnt_SD = 0;



#ifdef  __cplusplus
extern "C" {
#endif /* __cplusplus */



#ifdef  __cplusplus
}
#endif /* __cplusplus */

//tmr1.c

#include <xc.h>
#include "tmr1.h"

#include "../globalVar.h"

// ...
// MCC-Generated standard code..
// ...

void TMR1_DefaultInterruptHandler(void){
    // add your TMR1 interrupt custom code
    // or set custom function using TMR1_SetInterruptHandler()

    gCnt_SD++;


    if (gCnt_SD == 180)
    {
        gFlag_SDAktiv = 1;
    }

#include <xc.h>
#include "adc1.h"
#include "mcc.h"

#include "../globalVar.h"

void ADC1_ISR(void)
{
    // Clear the ADC interrupt flag
    PIR1bits.ADIF = 0;

    gFlag_AdcReady = 1; // Flag setzen, AD-Wandlung abgeschlossen



}

CLEAN SUCCESSFUL (total time: 125ms)
make -f nbproject/Makefile-default.mk SUBPROJECTS= .build-conf
make[1]: Entering directory 'C:/Users/AS/Desktop/MPLAB_Projekte/MINIMAL_CO_Sensor_V04.X'
make  -f nbproject/Makefile-default.mk dist/default/production/MINIMAL_CO_Sensor_V04.X.production.hex
make[2]: Entering directory 'C:/Users/AS/Desktop/MPLAB_Projekte/MINIMAL_CO_Sensor_V04.X'
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/mcc.p1  mcc_generated_files/mcc.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/interrupt_manager.p1  mcc_generated_files/interrupt_manager.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/pin_manager.p1  mcc_generated_files/pin_manager.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/tmr0.p1  mcc_generated_files/tmr0.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/tmr1.p1  mcc_generated_files/tmr1.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/main.p1  main.c 
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe" --pass1  --chip=12F1572 -Q -G  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib   --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"    -obuild/default/production/mcc_generated_files/adc1.p1  mcc_generated_files/adc1.c 
mcc_generated_files/../globalVar.h:17: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:19: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:21: warning: (339) initializer in extern declaration
globalVar.h:17: warning: (339) initializer in extern declaration
globalVar.h:19: warning: (339) initializer in extern declaration
mcc_generated_files/tmr1.c:87: warning: (373) implicit signed to unsigned conversion
globalVar.h:21: warning: (339) initializer in extern declaration
mcc_generated_files/tmr1.c:96: warning: (2030) a data pointer cannot be used to hold the address of a function
pointer to function with no arguments returning void -> pointer to void
mcc_generated_files/tmr1.c:118: warning: (373) implicit signed to unsigned conversion
mcc_generated_files/tmr1.c:179: warning: (2029) a function pointer cannot be used to hold the address of data
pointer to void -> pointer to function with no arguments returning void
mcc_generated_files/../globalVar.h:17: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:19: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:21: warning: (339) initializer in extern declaration
mcc_generated_files/adc1.c:113: warning: (373) implicit signed to unsigned conversion
mcc_generated_files/adc1.c:119: warning: (373) implicit signed to unsigned conversion
mcc_generated_files/adc1.c:140: warning: (373) implicit signed to unsigned conversion
mcc_generated_files/../globalVar.h:17: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:19: warning: (339) initializer in extern declaration
mcc_generated_files/../globalVar.h:21: warning: (339) initializer in extern declaration
mcc_generated_files/tmr0.c:75: warning: (373) implicit signed to unsigned conversion
mcc_generated_files/tmr0.c:90: warning: (2030) a data pointer cannot be used to hold the address of a function
pointer to function with no arguments returning void -> pointer to void
mcc_generated_files/tmr0.c:133: warning: (2029) a function pointer cannot be used to hold the address of data
pointer to void -> pointer to function with no arguments returning void
"C:Program Files (x86)Microchipxc8v1.42binxc8.exe"  --chip=12F1572 -G -mdist/default/production/MINIMAL_CO_Sensor_V04.X.production.map  --double=24 --float=24 --opt=+asm,+asmfile,-speed,+space,-debug,-local --addrqual=ignore --mode=free -P -N255 --warn=-3 --asmlist -DXPRJ_default=default  --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 --runtime=default,+clear,+init,-keep,-no_startup,-osccal,-resetbits,-download,-stackcall,+clib --output=-mcof,+elf:multilocs --stack=compiled:auto:auto "--errformat=%f:%l: error: (%n) %s" "--warnformat=%f:%l: warning: (%n) %s" "--msgformat=%f:%l: advisory: (%n) %s"      --memorysummary dist/default/production/memoryfile.xml -odist/default/production/MINIMAL_CO_Sensor_V04.X.production.elf  build/default/production/mcc_generated_files/adc1.p1 build/default/production/mcc_generated_files/mcc.p1 build/default/production/mcc_generated_files/pin_manager.p1 build/default/production/mcc_generated_files/interrupt_manager.p1 build/default/production/mcc_generated_files/tmr1.p1 build/default/production/mcc_generated_files/tmr0.p1 build/default/production/main.p1     
Microchip MPLAB XC8 C Compiler (Free Mode) V1.42
Build date: Apr 12 2017
Part Support Version: 1.42
Copyright (C) 2017 Microchip Technology Inc.
License type: Node Configuration

:: warning: (1273) Omniscient Code Generation not available in Free mode
mcc_generated_files/adc1.c:103: advisory: (1510) non-reentrant function "_ADC1_StartConversion" appears in multiple call graphs and has been duplicated by the compiler
mcc_generated_files/adc1.c:95: warning: (520) function "_ADC1_SelectChannel" is never called
mcc_generated_files/adc1.c:110: warning: (520) function "_ADC1_IsConversionDone" is never called
mcc_generated_files/adc1.c:116: warning: (520) function "_ADC1_GetConversionResult" is never called
mcc_generated_files/adc1.c:122: warning: (520) function "_ADC1_GetConversion" is never called
mcc_generated_files/pin_manager.c:89: warning: (520) function "_PIN_MANAGER_IOC" is never called
mcc_generated_files/tmr1.c:108: warning: (520) function "_TMR1_StopTimer" is never called
mcc_generated_files/tmr1.c:114: warning: (520) function "_TMR1_ReadTimer" is never called
mcc_generated_files/tmr1.c:123: warning: (520) function "_TMR1_WriteTimer" is never called
mcc_generated_files/tmr1.c:145: warning: (520) function "_TMR1_Reload" is never called
mcc_generated_files/tmr1.c:152: warning: (520) function "_TMR1_StartSinglePulseAcquisition" is never called
mcc_generated_files/tmr1.c:157: warning: (520) function "_TMR1_CheckGateValueStatus" is never called
mcc_generated_files/tmr0.c:94: warning: (520) function "_TMR0_ReadTimer" is never called
mcc_generated_files/tmr0.c:103: warning: (520) function "_TMR0_WriteTimer" is never called
mcc_generated_files/tmr0.c:109: warning: (520) function "_TMR0_Reload" is never called
Non line specific message:: warning: (2028) external declaration for identifier "_SD_STATE" doesn't indicate storage location
:0: error: (499) undefined symbol:
    _SD_STATE(dist/default/productionMINIMAL_CO_Sensor_V04.X.production.obj) 
(908) exit status = 1
nbproject/Makefile-default.mk:227: recipe for target 'dist/default/production/MINIMAL_CO_Sensor_V04.X.production.hex' failed
make[2]: Leaving directory 'C:/Users/AS/Desktop/MPLAB_Projekte/MINIMAL_CO_Sensor_V04.X'
nbproject/Makefile-default.mk:90: recipe for target '.build-conf' failed
make[1]: Leaving directory 'C:/Users/AS/Desktop/MPLAB_Projekte/MINIMAL_CO_Sensor_V04.X'
nbproject/Makefile-impl.mk:39: recipe for target '.build-impl' failed
make[2]: *** [dist/default/production/MINIMAL_CO_Sensor_V04.X.production.hex] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2

BUILD FAILED (exit value 2, total time: 3s)

I hope, you can help me!
Thanks in advance!

Источник

Добрый день.
Задача.
Имею заведомо работающую программу, которую нужно залить в пик 874.
Имею небольшой опыт работы с MPLAB и программирования, пользовался MPLAB IDE v8.56.
Попробовал использовать эту программу для моей задачи — получил много ошибок в синтаксисе, сидел исправлял всё подряд — всё равно ничего не скомпилил.
Тогда обратил внимание на коментарии к моей программе, а они следующие:

* Generation Information :
* Device : PIC16F874A
* Compiler : XC8 v1.38
* MPLAB : MPLAB X IDE v3.26

То есть я использовал не тот компилятор и программу. Хорошо.
Установил xc8-v1.45 и MPLAB X IDE v4.15. Но и тут ничего не взлетело:(
Пишет:

:: warning: (1273) Omniscient Code Generation not available in Free mode
:0: error: (499) undefined symbol:
_slowCircleProc(dist/default/productionw1824ssa.X.production.obj)
(908) exit status = 1
nbproject/Makefile-default.mk:131: recipe for target ‘dist/default/production/w1824ssa.X.production.hex’ failed
make[2]: Leaving directory ‘C:/project/W1824SSA/MPLABX/w1824ssa.X’
nbproject/Makefile-default.mk:90: recipe for target ‘.build-conf’ failed
make[1]: Leaving directory ‘C:/project/W1824SSA/MPLABX/w1824ssa.X’
nbproject/Makefile-impl.mk:39: recipe for target ‘.build-impl’ failed
make[2]: *** [dist/default/production/w1824ssa.X.production.hex] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2

BUILD FAILED (exit value 2, total time: 752ms)

Я не могу понять, что он от меня хочет. Есть идеи?
Заранее спасибо.

Источник

First of all let me say: awesome to have this project and give newbies a got starting point for XC8 in combination with fatfs, I was so happy to find this porject!

Unfortunately I have an issue with the code.

When follwoing your video tutorial step by step (even chose the exact same PIC model), I have an issue compiling the project.
:0: error: (499) undefined symbol: _SPI_Open(dist/default/production/Test.X.production.obj)

I am using the following IDE and Compiler Verisons:
Product Version: MPLAB X IDE v3.30
Java: 1.8.0_65; Java HotSpot(TM) 64-Bit Server VM 25.65-b01
Runtime: Java(TM) SE Runtime Environment 1.8.0_65-b17
System: Mac OS X version 10.11.4 running on x86_64; UTF-8; en_EN

XC-8 Compiler in Verison 1.37

In the Tutorial was one step which I could not do, which is the part where you change the SPI Port to be used to 0, since this line does not exist in the diskio.c file in the git repo.

Any ideas how to fix this issue?

Here is the full stack:
`make -f nbproject/Makefile-default.mk SUBPROJECTS= .build-conf
make[1]: Entering directory ‘/Users/someuser/MPLABXProjects/Test.X’
make -f nbproject/Makefile-default.mk dist/default/production/Test.X.production.hex
make[2]: Entering directory ‘/Users/someuser/MPLABXProjects/Test.X’
«/Applications/microchip/xc8/v1.37/bin/xc8» —chip=18F25K20 -G -mdist/default/production/Test.X.production.map —double=24 —float=24 —emi=wordwrite —opt=default,+asm,+asmfile,-speed,+space,-debug —addrqual=ignore —mode=free -P -N255 —warn=-3 —asmlist —summary=default,-psect,-class,+mem,-hex,-file —output=default,-inhx032 —runtime=default,+clear,+init,-keep,-no_startup,-download,+config,+clib,-plib —output=-mcof,+elf:multilocs —stack=compiled:auto:auto:auto «—errformat=%f:%l: error: (%n) %s» «—warnformat=%f:%l: warning: (%n) %s» «—msgformat=%f:%l: advisory: (%n) %s» —memorysummary dist/default/production/memoryfile.xml -odist/default/production/Test.X.production.elf build/default/production/mcc_generated_files/spi.p1 build/default/production/mcc_generated_files/mcc.p1 build/default/production/mcc_generated_files/pin_manager.p1 build/default/production/main.p1 build/default/production/_ext/1307105986/diskio.p1 build/default/production/_ext/1307105986/ff.p1
Microchip MPLAB XC8 C Compiler (Free Mode) V1.37
Build date: Mar 10 2016
Part Support Version: 1.37
Copyright (C) 2016 Microchip Technology Inc.
License type: Node Configuration

:: advisory: (1233) Employing 18F25K20 errata work-arounds:
:: advisory: (1234) * No stopping on H/W breakpoints after NOP2
:: warning: (1273) Omniscient Code Generation not available in Free mode
mcc_generated_files/spi.c:91: warning: (520) function «_SPI_Exchange8bitBuffer» is never called
mcc_generated_files/spi.c:130: warning: (520) function «_SPI_IsBufferFull» is never called
mcc_generated_files/spi.c:135: warning: (520) function «_SPI_HasWriteCollisionOccured» is never called
mcc_generated_files/spi.c:140: warning: (520) function «_SPI_ClearWriteCollisionStatus» is never called
mcc_generated_files/pin_manager.c:68: warning: (520) function «_PIN_MANAGER_IOC» is never called
/Users/someuser/MPLABXProjects/Test.X/ff.c:2590: warning: (520) function «_f_read» is never called
mcc_generated_files/spi.c:107: warning: (1498) pointer (SPI_Exchange8bitBuffer@dataOut) in expression may have no targets
mcc_generated_files/spi.c:119: warning: (1498) pointer (SPI_Exchange8bitBuffer@dataOut) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/diskio.c:219: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:220: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:221: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:222: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:223: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:332: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:353: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:395: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:434: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:484: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:486: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:497: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/diskio.c:505: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:528: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:836: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:846: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:852: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:890: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:894: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:899: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:906: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:907: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:914: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:1257: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:1258: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2029: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2130: warning: (759) expression generates no code
/Users/someuser/MPLABXProjects/Test.X/ff.c:2243: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2265: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2233: warning: (759) expression generates no code
/Users/someuser/MPLABXProjects/Test.X/ff.c:2247: warning: (759) expression generates no code
/Users/someuser/MPLABXProjects/Test.X/ff.c:2266: warning: (759) expression generates no code
/Users/someuser/MPLABXProjects/Test.X/ff.c:2474: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2505: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2612: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2617: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2645: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2669: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2674: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2603: warning: (1498) pointer (f_read@br) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2629: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2630: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2631: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2634: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2641: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2667: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2673: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2615: warning: (1498) pointer (f_read@fp) in expression may have no targets
/Users/someuser/MPLABXProjects/Test.X/ff.c:2718: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2760: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2787: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2792: warning: (752) conversion to shorter data type
/Users/someuser/MPLABXProjects/Test.X/ff.c:2842: warning: (752) conversion to shorter data type
:0: error: (499) undefined symbol:
_SPI_Open(dist/default/production/Test.X.production.obj)
(908) exit status = 1
nbproject/Makefile-default.mk:205: recipe for target ‘dist/default/production/Test.X.production.hex’ failed
make[2]: Leaving directory ‘/Users/someuser/MPLABXProjects/Test.X’
nbproject/Makefile-default.mk:84: recipe for target ‘.build-conf’ failed
make[1]: Leaving directory ‘/Users/someuser/MPLABXProjects/Test.X’
nbproject/Makefile-impl.mk:39: recipe for target ‘.build-impl’ failed
make[2]: *** [dist/default/production/Test.X.production.hex] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2

BUILD FAILED (exit value 2, total time: 9s)`

Источник

Receiving “undefined symbols” error with XC8 concerning plib I2C functions on PIC18

I’ve been trying to resolve an issue all evening and I just can’t seem to get through to it. I have a problem very similar to this one : Receiving «undefined symbols» error with XC8 concerning plib I2C functions

The thing is, the recommended action for the previous post was to change to a PIC18 in order to resolve the problem. I’m already working with a PIC18!

My setup is as follows:

MPLAB: Product Version: MPLAB X IDE v3.50 Java: 1.8.0_91; Java HotSpot(TM) 64-Bit Server VM 25.91-b14 Runtime: Java(TM) SE Runtime Environment 1.8.0_91-b14 System: Windows 7 version 6.1 running on amd64; Cp1252; en_CA (mplab)

XC8: Version 1.40

Also installed : peripheral-libraries-for-pic18-v2.00rc3-windows-installer.exe

Here is the «offending code». note that this does not generate any errors in my main.c file (no functions underlined in red). At first the I2C functions were underlined in red, but when I added the #define I2C_V1 at the beginning of my code, that worked itself out. however I do keep getting the following error :

:0: error: (499) undefined symbol: _OpenI2C(dist/default/productionLab2.X.production.obj)

And here is the log (verbose) :

I have checked the «Link in peripheral library» box in the linker options. Also, in case it got lost in the whole log somewhere, there’s the following warning that I’m getting :

I’ve looked into it but couldn’t find any information as to what I might be missing/doing wrong.

As for a little extra context, I’m teaching a course on microprocessors and PIC programming and I’m picking up everything from someone else who was giving the course last year. Apparently the I2C module worked last year. I’m checking with my colleague to see what’s changed since then. Maybe the compiler version.

Come to think of it, I didn’t restart my computer after I installed the library. don’t think it should make a difference but I’ll try anyways.

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Compiler Issue / undefined symbol [XC8] #1

Comments

pkerspe commented Jun 1, 2016 •

First of all let me say: awesome to have this project and give newbies a got starting point for XC8 in combination with fatfs, I was so happy to find this porject!

Unfortunately I have an issue with the code.

When follwoing your video tutorial step by step (even chose the exact same PIC model), I have an issue compiling the project.
:0: error: (499) undefined symbol: _SPI_Open(dist/default/production/Test.X.production.obj)

XC-8 Compiler in Verison 1.37

In the Tutorial was one step which I could not do, which is the part where you change the SPI Port to be used to 0, since this line does not exist in the diskio.c file in the git repo.

Any ideas how to fix this issue?

BUILD FAILED (exit value 2, total time: 9s)`

The text was updated successfully, but these errors were encountered:

Источник

0 error 499 undefined symbol

* Generation Information :
* Device : PIC16F874A
* Compiler : XC8 v1.38
* MPLAB : MPLAB X IDE v3.26

BUILD FAILED (exit value 2, total time: 752ms)

Я не могу понять, что он от меня хочет. Есть идеи?
Заранее спасибо.

driver_gv

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Ошибка (499) undefined symbol: — не распознанный символ
и предупреждение warning: (1273) — что используется FREE , и не все опции оптимизации доступны.(Чистый марекетинг)

Либо смотреть какой символ не хочет понять, либо скачать из архива нужные версии.
Архив на микрочипе тут http://www.microchip.com/development-to . ds-archive

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лучше бы вы хекс лили.

ваш исходный код под какой компилятор написан? мжт не под XC8.
ну и о подгружаемых модулях выше писали, я присоединяюсь.

приложите исходник, посмотрим.

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  Всем доброго времени суток. Пришёл тут аппарат, то ли музыкальный центр, то ли магнитола. Суть не в этом.
  В общем не работает функционал проигрывателя CD-дисков (И открывание-закрывание сдвижной крышки тоже, вообще ничего) и чтения USB/SD флэшек.
  Также в наличии проблема со звуком, микросхема усилителя скорее всего живая (Всё равно менял три разных), судя по хлопкам при подключении акустики. Предусилитель менял, все также в левом канале ничего, а в правом негромко подхрипывает музыка.
  Усилитель выполнен на м/с TA8207K, пред на TM2313, Управление дисками завязано на SA9259. Центральный процессор — ALI M5673. Конденсатор на питании заменил, т.к. было всего 3900 мкф вместо нужных 4700, остальные в норме.
  Куда копнуть дальше, что проверить? нужны подсказки.
  
  PS: За аппарат сильно не волнуемся в плане окончательной поломки, отнести к мастеру — засмеёт…
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  Дурак тот кто не следует правильным советам (ну или он гений, типа он не знает , что так делать нельзя ( или знает (ему об этом сказали более сведующие )), но делает (всё равно делает), и у него получается)!….
  
  Дистрофик, Ваша просьба о помощи здесь, в довольно простом по сути вопросе, равносильна типа если бы я например, на форуме хирургов просил помощи в операции по удалению аппендикса (что для профильного специалиста, тоже не простой, рядовой случай)…
  
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  ChePay · Опубликовано 25 минут назад
  
  OSC – это выход гетеродина. Используется или для цифровой шкалы или синтезатором частот, чтобы отслеживать частоту настройки.
  
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  Судя по внутренней схеме LA1140, это же напряжение используется и для БШН. При неточной настройке сигнал приглушается.

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[PIC] error :undefined symbol

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beauty world
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Jun 22, 2015

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Hi.Im learning PIC and I use PIC18f45k22 for voltmeter with LCD display project.but the program has erroe that I cant solve it

:: warning: (1273) Omniscient Code Generation not available in Free mode
:0: error: (499) undefined symbol:
_DelayFor18TCY(dist/default/productionlcd_voltmeter.X.production.obj)
make[2]: *** [dist/default/production/lcd_voltmeter.X.production.hex] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
(908) exit status = 1
nbproject/Makefile-default.mk:119: recipe for target ‘dist/default/production/lcd_voltmeter.X.production.hex’ failed
make[2]: Leaving directory ‘D:/PIC MICRO/my prj/lcd voltmeter/lcd voltmeter.X’
nbproject/Makefile-default.mk:78: recipe for target ‘.build-conf’ failed
make[1]: Leaving directory ‘D:/PIC MICRO/my prj/lcd voltmeter/lcd voltmeter.X’
nbproject/Makefile-impl.mk:39: recipe for target ‘.build-impl’ failed

BUILD FAILED (exit value 2, total time: 1s)

what should I do?

Last edited by a moderator: Jun 22, 2015

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To provide solution we have to see your code. So, zip and post the complete MPLAB X project files. Have you installed proper toolset for using with MPLAB X. That is have you installed a Compiler to work with MPLAB X ?

You seem to be missing the function «_DelayFor18TCY()» or possibly it is there but it’s function prototype is missing.

Brian.

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It’s a typing mistake!

The error message says it can’t find «DelayFor18TCY()» but the function you have created is:

//this function creat 18cycle delay for xlcd library
void Delay[B][COLOR=#FF0000]f[/COLOR][/B]or18TCY(void){
    Delay10TCYx(20);
}

Brian.

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I make it but agan that error

ny code is this:

#include<xc.h>
#include<delays.h>
#include<stdlib.h>
#include<xlcd.h>
#include<adc.h>


#define _XTAL_FREQ 8000000
#pragma config MCLRE=EXTMCLR,FOSC=HSHP,WDTEN=OFF

void Delay_second(unsigned char s){
    unsigned char i,j;
    for(j=0;j<s;j++){
        for(i=0;i<100;i++)__delay_ms(10);}

}

void DelayFOR18TCY(void){
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();
    return;}

void DelayPORXLCD(void){           //15ms delay
    Delay1KTCYx(30);
}

void DelayXLCD(void){            //5ms delay

}

void LCD_Clear(){
    while(BusyXLCD());
    WriteCmdXLCD(0x01);

}
void LCD_Move(unsigned char row,unsigned char column){
    char ddaddr=40*(row-1)+column;
    while(BusyXLCD());
    SetDDRamAddr(ddaddr);

}

void main(){
    unsigned char vin,mv;
    char op[10];
    TRISB=0;              //PORT B CONFIGUR AS OUTPUT
    TRISAbits.RA0=1;      //PIN A0 configure as input
    ANSELB=0;             //PORT B config as digital
    ANSELA=1;



    Delay_second(1);
    OpenXLCD(FOUR_BIT&&LINE_5X7);


    OpenADC(ADC_FOSC_2 & ADC_RIGHT_JUST &ADC_20_TAD,
            ADC_CH0& ADC_INT_OFF ,
            ADC_TRIG_CTMU &ADC_REF_VDD_VDD &ADC_REF_VDD_VSS);

    while( BusyXLCD());        //wait if the lcd is busy
    WriteCmdXLCD(DON);        //desplay lcd on
     while( BusyXLCD());        //wait if the lcd is busy
      WriteCmdXLCD(0x06);
      putrsXLCD("VOLTMETER");
      Delay_second(2);
      LCD_Clear();

      for(;;){
          LCD_Clear();
          SelChanConvADC(ADC_CH0);
           while( BusyXLCD());
           vin=ReadADC();
          mv=(vin*5000)>>10;
          LCD_Move(1,1);
          putrsXLCD("mv=");
          mv=(vin*5000)>>10;
          itoa(op,mv,10);

          LCD_Move(1,6);
          putrsXLCD(op);
          Delay_second(1);
      }
}

Last edited by a moderator: Jun 23, 2015

Read the error message carefully and consider that C language is case sensitive. Correct the definition of DelayFOR18TCY() respectively.

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I chamge it but again the same error

the code that I use is this:

[CODE]
#include<xc.h>
#include<delays.h>
#include<stdlib.h>
#include<xlcd.h>
#include<adc.h>


#define _XTAL_FREQ 8000000
#pragma config MCLRE=EXTMCLR,FOSC=HSHP,WDTEN=OFF

void Delay_second(unsigned char s){
    unsigned char i,j;
    for(j=0;j<s;j++){
        for(i=0;i<100;i++)__delay_ms(10);}

}

void DelayFOR18TCY(void){
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();  NOP();  NOP();
    NOP();  NOP();
    return;}

void DelayPORXLCD(void){           //15ms delay
    Delay1KTCYx(30);
}

void DelayXLCD(void){            //5ms delay
__delay_ms(5);
}

void LCD_Clear(){
    while(BusyXLCD());
    WriteCmdXLCD(0x01);

}
void LCD_Move(unsigned char row,unsigned char column){
    char ddaddr=40*(row-1)+column;
    while(BusyXLCD());
    SetDDRamAddr(ddaddr);

}

void main(){
    unsigned char vin,mv;
    char op[10];
    TRISB=0;              //PORT B CONFIGUR AS OUTPUT
    TRISAbits.RA0=1;      //PIN A0 configure as input
    ANSELB=0;             //PORT B config as digital
    ANSELA=1;



    Delay_second(1);
    OpenXLCD(FOUR_BIT&&LINE_5X7);


    OpenADC(ADC_FOSC_2 & ADC_RIGHT_JUST &ADC_20_TAD,
            ADC_CH0& ADC_INT_OFF ,
            ADC_TRIG_CTMU &ADC_REF_VDD_VDD &ADC_REF_VDD_VSS);

    while( BusyXLCD());        //wait if the lcd is busy
    WriteCmdXLCD(DON);        //desplay lcd on
     while( BusyXLCD());        //wait if the lcd is busy
      WriteCmdXLCD(0x06);
      putrsXLCD("VOLTMETER");
      Delay_second(2);
      LCD_Clear();

      for(;;){
          LCD_Clear();
          SelChanConvADC(ADC_CH0);
           while( BusyXLCD());
           vin=ReadADC();
          mv=(vin*5000)>>10;
          LCD_Move(1,1);
          putrsXLCD("mv=");
          mv=(vin*5000)>>10;
          itoa(op,mv,10);

          LCD_Move(1,6);
          putrsXLCD(op);
          Delay_second(1);
      }
}

[/CODE]

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Digital Design and Embedded Programming
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I am new to coding in C and I cannot figure out the proper way to link my files together so that I can use code from one class in another. I’m working on a project which will likely become a very long program so I am trying to avoid cluttering my main class with a bunch of functions. Instead, I would like to keep them separate and make it easy to transfer the code into any future project.

From looking up similar issues I am assuming this is somewhat simple and that I am probably struggling so much with it because I’m missing the basics of coding in C.

This is what is shown in the terminal:

> Executing task in folder Led-Pot_Circuit_Test: .Build.cmd 16f887 <


C:Usersraymu_000DocumentsProgrammingVisualStudioCodePIC_C++_on_VSCodeLed-Pot_Circuit_Test>mkdir output-files
A subdirectory or file output-files already exists.

C:Usersraymu_000DocumentsProgrammingVisualStudioCodePIC_C++_on_VSCodeLed-Pot_Circuit_Test>C:Progra~1Microchipxc8v2.32binxc8.exe --chip=16f887 --outdir=".output-files" ".main.c"
C:Progra~1Microchipxc8v2.32picbinpicc --chip=16f887 --outdir=.output-files .main.c
Microchip MPLAB XC8 C Compiler V2.32
Build date: Feb  1 2021
Part Support Version: 2.32
Copyright (C) 2021 Microchip Technology Inc.
License type: Node Configuration

0: (499) undefined symbol:
        _adc_convert(output-filesmain.obj)
(908) exit status = 1
(908) exit status = 1

C:Usersraymu_000DocumentsProgrammingVisualStudioCodePIC_C++_on_VSCodeLed-Pot_Circuit_Test>C:Progra~1Microchipxc8v2.32binxc8.exe --chip=16f887 --outdir=".output-files" ".ProjectInitApp.c"
C:Progra~1Microchipxc8v2.32picbinpicc --chip=16f887 --outdir=.output-files .ProjectInitApp.c
Microchip MPLAB XC8 C Compiler V2.32
Build date: Feb  1 2021
Part Support Version: 2.32
Copyright (C) 2021 Microchip Technology Inc.
License type: Node Configuration

Non line specific message: (1091) main function "_main" not defined
(908) exit status = 1
(908) exit status = 1
The terminal process "C:WINDOWSSystem32WindowsPowerShellv1.0powershell.exe -Command .Build.cmd 16f887" terminated with exit code: 1.

Terminal will be reused by tasks, press any key to close it.

My main class:

//main.c

// CONFIG1
#pragma config FOSC = INTRC_NOCLKOUT// Oscillator Selection bits (INTOSCIO oscillator: I/O function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled and can be enabled by SWDTEN bit of the WDTCON register)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF      // RE3/MCLR pin function select bit (RE3/MCLR pin function is digital input, MCLR internally tied to VDD)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = OFF      // Brown Out Reset Selection bits (BOR disabled)
#pragma config IESO = OFF       // Internal External Switchover bit (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF      // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is disabled)
#pragma config LVP = OFF        // Low Voltage Programming Enable bit (RB3 pin has digital I/O, HV on MCLR must be used for programming)

// CONFIG2
#pragma config BOR4V = BOR21V   // Brown-out Reset Selection bit (Brown-out Reset set to 2.1V)
#pragma config WRT = OFF        // Flash Program Memory Self Write Enable bits (Write protection off)

#define _XTAL_FREQ 8000000 // 8Mhz

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>
#include <pic16f887.h>
#include "Projectuser.h"


void main(void) {

    //InitApp();

    unsigned short adc_value; // variable to hold ADC conversion result in/* Configure the oscillator for the device

    ANSELbits.ANS0 = 0; // Disable analog on pin RA0
    TRISAbits.TRISA0 = 0; // Set pin RA0 as output

    while(1) {
        PORTAbits.RA0 = 0; // Set RA0 to LOW
        // calculate wait time
        adc_value = adc_convert(1); // perform A/D conversion using input from channel 1 (AN1)
        __delay_ms(500); // Right shift adc_value two spaces to convert to milliseconds
        PORTAbits.RA0 = 1; // Set RA0 to HIGH
        adc_value = adc_convert(1);
        __delay_ms(500);
    }
}

This is my attempt at making a library so that I can «easily» transfer some useful code later onto another project:

//user.h

#ifndef USER_H
#define USER_H

void init_adc(void);
unsigned short adc_convert(unsigned char);

#endif

Useful code:

//InitApp.c

#include <xc.h>
#include <pic16f887.h>
#include "user.h"

/*
 Initialize the Analog to Digital Converter
 */
void init_adc(void) {
    TRISAbits.TRISA1 = 0b1; // Set pin RA1 as Input
    //ANCON0bits.ANSEL1   =0b1;
    ADCON1bits.VCFG0 = 0; // set v+ reference to Vdd
    ADCON1bits.VCFG1 = 0; // set v- reference to Vss (Gnd)
    ADCON1bits.ADFM = 1; // right justify the output
    ADCON0bits.ADCS = 0b01; // use Fosc/8 for clock source
    ADCON0bits.ADON = 1; // turn on the ADC
}

/*
 Preform an analog to digital conversion. 
@param channel The ADC input channel to use. 
@return The value of the conversion.
*/
unsigned short adc_convert(unsigned char channel) {
    ADCON0bits.CHS = channel; // select the given channel
    ADCON0bits.GO = 1; // start the conversion
    while(ADCON0bits.GO_DONE); // wait for the conversion to finish
    return(ADRESH<<8)|ADRESL; // return the result
}

Pic for reference:

Here are the contents of the «output-files» Folder, when I run the «Build.cmd» task all the files from the compiler go here, but I am missing a few (like «.hex» file) since the program cannot compile properly.

Do I need to have a main class inside of InitApp.c class?
How does one properly compile and link C files together??

I would appreciate amy help and advice, thanks.

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Hi-Tech C Compiler: What am I doing wrong?

Thread starter

micro571
Start date

Jun 28, 2009

Status: Not open for further replies.

I am trying to program a PIC16F877A. I know my hardware is good because I can load on the LED blink program from here: blink a LED and it works.

I am trying to do an led blink program using the Hi-Tech C Compiler. I have it specified as the tool chain in MPLab.

Here is my code:
#include <pic.h>
#include <conio.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include «delay.h»
//#include «delay.c»
//void delay(void);
//#define _16F877
// __CONFIG(UNPROTECT|BODEN|FOSC1|BKBUG|WRT);
//__CONFIG( XT & WDTDIS & PWRTDIS & BORDIS & LVPDIS & WRTEN & DEBUGDIS & UNPROTECT );
void main (){

ADCON1 =0x06 ; // Changes PORTA to digital
CMCON = 0x07 ; // Disable analog comparators
PORTA = 0x00 ;
PORTB = 0X00 ;
PORTC = 0X00 ;
PORTD = 0X00 ;
PORTE = 0X00 ;
TRISA = 0x00 ; // Configure PORTA as output
TRISB = 0X00 ;
TRISC = 0X00 ;
TRISD = 0X00 ;
TRISE = 0X00 ;

while(1){
PORTA = 0XFF ;
PORTB = 0XFF ;
PORTC = 0XFF ;
PORTD = 0XFF ;
PORTE = 0Xff ;
DelayMs(500);
PORTA = 0X00 ;
PORTB = 0X00 ;
PORTC = 0X00 ;
PORTD = 0X00 ;
PORTE = 0X00 ;
DelayMs(500);
}
}

The code compiles, but nothing happens when I load the hex file.
It’s a simple program. I must be missing something small. Any suggestions?

be80be

just a thought how many leds do you have hooked to that chip it cant lite 33 all at one time

Last edited: Jun 28, 2009

be80be

try this and see if it works change the xtal setting to match yours

#include <htc.h>	// Required to interface with delay routines

#ifndef _XTAL_FREQ
 // Unless already defined assume 4MHz system frequency
 // This definition is required to calibrate __delay_us() and __delay_ms()
 #define _XTAL_FREQ 4000000
#endif
void main(void){
ADCON1 =0x06 ; // Changes PORTA to digital
CMCON = 0x07 ; // Disable analog comparators
PORTA = 0x00 ;
PORTB = 0X00 ;
PORTC = 0X00 ;
PORTD = 0X00 ;
PORTE = 0X00 ;
TRISA = 0x00 ; // Configure PORTA as output
TRISB = 0X00 ;
TRISC = 0X00 ;
TRISD = 0X00 ;
TRISE = 0X00 ;

while(1){
PORTA = 0XFF ;
PORTB = 0XFF ;
PORTC = 0XFF ;
PORTD = 0XFF ;
PORTE = 0Xff ;
__delay_ms(100);
PORTA = 0X00 ;
PORTB = 0X00 ;
PORTC = 0X00 ;
PORTD = 0X00 ;
PORTE = 0X00 ;
__delay_ms(100);
}
}

I changed your reference code value from 4MHz to 20MHz and compiled.

As is, the new code produces an error:

Error [499] ; . undefined symbol:
___delay_ms (877.obj)

I’m using the Hi-Tech C compiler, v9.60.

At the top of the delay.h file I was referencing in my code, I had defined:
#define PIC_CLK 20000000

Can you try this,

#include <pic.h>
#include <conio.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>

#define _16F877
__CONFIG( HS & WDTDIS & PWRTDIS & BORDIS & LVPDIS & WRTEN & DEBUGDIS & UNPROTECT );

#define	XTAL_FREQ	20MHZ
#include "delay.c"

void main (){
    ADCON1 =0x06 ; // Changes PORTA to digital
    CMCON = 0x07 ; // Disable analog comparators
    PORTA = 0x00 ;
    PORTB = 0X00 ;
    PORTC = 0X00 ;
    PORTD = 0X00 ;
    PORTE = 0X00 ;
    TRISA = 0x00 ; // Configure PORTA as output
    TRISB = 0X00 ;
    TRISC = 0X00 ;
    TRISD = 0X00 ;
    TRISE = 0X00 ;    
    while(1){
        PORTA = 0XFF ;
        PORTB = 0XFF ;
        PORTC = 0XFF ;
        PORTD = 0XFF ;
        PORTE = 0Xff ;
        DelayMs(500);
        PORTA = 0X00 ;
        PORTB = 0X00 ;
        PORTC = 0X00 ;
        PORTD = 0X00 ;
        PORTE = 0X00 ;
        DelayMs(500);
    }
}

Mike.

Last edited: Jun 28, 2009

be80be

I’m using the Hi-Tech C compiler, v9.60.
I have v9.65 and it wouldn’t build your code

I tried the code as-is and got a bunch of errors:
Error [482] ; . symbol «_DelayMs_interrupt» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayS» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayMs» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayBigMs» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayBigUs» is defined more than once in «877.obj»
Error [482] ; . symbol «_delayus_variable» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayMs_interrupt» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayS» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayMs» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayBigMs» is defined more than once in «877.obj»
Error [482] ; . symbol «_DelayBigUs» is defined more than once in «877.obj»
Error [482] ; . symbol «_delayus_variable» is defined more than once in «877.obj»

I changed «delay.c» to «delay.h» and compiled…

It worked! I’ve got a blinking led now.

Thanks for your help. I’m guessing it’s the config parameter that did it.

I had tried it with this config earlier:
__CONFIG( XT & WDTDIS & PWRTDIS & BORDIS & LVPDIS & WRTEN & DEBUGDIS & UNPROTECT );
but that didn’t work.

Thanks again for your speedy responses!

Now it’s time to upgrade blinky led program to something more useful.

Doing a bit of trial and error with the config line; I needed to specify HS (presumably high-speed) instead of XT (external??) for the oscillator selection bits.

be80be

HS and XT are both external here data sheet has about it

14.2.1 OSCILLATOR TYPES
The PIC16F87XA can be operated in four different
oscillator modes. The user can program two configuration
bits (FOSC1 and FOSC0) to select one of these four
modes:
• LP Low-Power Crystal
• XT Crystal/Resonator
• HS High-Speed Crystal/Resonator
• RC Resistor/Capacitor

a few things:

1) you will need to make sure that the fuses are set in a way consistent with your circuit. do you use the internal rc oscillator? for example.

2) I am assuming that the port settings are right. but you typically set TRISA/B… registers before you set the ports.

3) the errors with regarding to delay() is due to the header files.

how about this one?

#include	<pic.h>
#include	<conio.h>
#include	<stdlib.h>
#include <stdio.h>
#include	<ctype.h>
#include "delay.h"
//#include "delay.c"  // you may or may not be able to comment out this. depending on what's in delay.h and delay.c
//void delay(void);   // it is always a good idea to declare functions explicitly
//#define _16F877
//	__CONFIG(UNPROTECT|BODEN|FOSC1|BKBUG|WRT);
//__CONFIG( XT & WDTDIS & PWRTDIS & BORDIS & LVPDIS & WRTEN & DEBUGDIS & UNPROTECT );
void main (){

ADCON1 =0x06 ; // Changes PORTA to digital
CMCON = 0x07 ; // Disable analog comparators
TRISA = 0x00 ; // Configure PORTA as output
TRISB = 0X00 ;
TRISC = 0X00 ;
TRISD = 0X00 ;
TRISE = 0X00 ;
PORTA = 0x00 ;
PORTB = 0X00 ;
PORTC = 0X00 ;
PORTD = 0X00 ;
PORTE = 0X00 ;

while(1){
  DelayMs(500);
  PORTA = ~PORTA ;
  PORTB = ~PORTB ;
  PORTC = ~PORTC ;
  PORTD = ~PORTD ;
  PORTE = ~PORTE ;
  }
}

Last edited: Jun 29, 2009

be80be

You no I’ve tried toggle like that and it doesn’t blink the led

while(1){
  DelayMs(500);
  PORTA = ~PORTA ;
  PORTB = ~PORTB ;
  PORTC = ~PORTC ;
  PORTD = ~PORTD ;
  PORTE = ~PORTE ;
  }
}

3v0

Coop Build Coordinator

Use the port latches rather then the ports. The latches return what was written.

LATA=~LATA;

be80be

Use the port latches rather then the ports. The latches return what was written.

LATA=~LATA;

Where that on a 16f877a not a 18fchip

3v0

Coop Build Coordinator

Where that on a 16f877a not a 18fchip

That’s what I get for only reading one post down, but it illustrates the point, and a good reason to use an 18F.

On the 16F you need to toggle a variable and write it to the port

char toggleMe;
....
toggleMe = 0x00;
...
while(1)
{
  toggleMe = ~toggleMe;
  PORTA = toggleMe;
}

be80be

I found why the chip I was using has adc on portC so I needed this

void main (){
ANSEL = 0;                  // makes PORTC digital 
PORTC = 0;                 // Initialize PORTC
TRISC = 0;                 // Configure PORTC as output
while(1){
  Delay_Ms(100);
  PORTC = ~PORTC;
 }
}

works find like this LOL

If PORTC=~PORTC doesn’t work then some possible reasons are,

1. You have the pins still set to analogue as pointed out by Burt.
2. You have overloaded the pins and this is forcing them high/low. Normally by connecting LEDs without series resistors.
3. You forgot to switch the pins to output.
4. The pins are configured for some other peripheral.
5. One of the other reasons for pics not working — not programmed, no oscillator, no power etc.

Mike.

Last edited: Jun 29, 2009

the fact using an intermediate variable can toggle a port suggests that the port itself is in the right mode.

I am curious about this as well. I have never encountered an example where PORTA=~PORTA; does not work.

3v0, do you have an actual code where this is known to not work?

3v0

Coop Build Coordinator

Nope.

I was thinking about the Read-Modify-Write problem on the 16F’s.

Burt said PORT=~PORT did not work. According to his post it did not work on any of the ports. I did not suspect he had not configured the port correctly.

the fact using an intermediate variable can toggle a port suggests that the port itself is in the right mode.

I am curious about this as well. I have never encountered an example where PORTA=~PORTA; does not work.

3v0, do you have an actual code where this is known to not work?

Try it on any pic chip with analogue pins. Any pins that are analogue work well as digital outputs but when you read them they always return zero. Hence why a copy will work.

Mike.

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Receiving “undefined symbols” error with XC8 concerning plib I2C functions on PIC18

Compiler Issue / undefined symbol [XC8] #1

Comments

pkerspe commented Jun 1, 2016 •

0 error 499 undefined symbol

Кто сейчас на форуме

Нужна помощь в программировании

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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Hi-Tech C Compiler: What am I doing wrong?

3v0

Coop Build Coordinator

3v0

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3v0

Coop Build Coordinator

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