CCS/MSP430F5659: error: unresolved symbol, first referenced

harish yadav said:

I am trying to interface lcd, uart but after build it gives error: unresolved symbol, reference first. I have read ti forums to resolve the error and i found that i am missing some library but not able to find which one.

Harish,

The unresolved symbol error is basically saying that main.c is referencing symbols clear_lcd, lcd_init, etc. but the linker cannot find a definition for it. The definition can either be in a C source file that gets compiled and linked as part of the project or in a library file that gets linked into the project. I don't have knowledge about the project/interface code you are working with to know where these symbols are defined, but I see that you have some source files in the /driverlibrary directory. Do those files contain the definitions for those symbols, I would imagine they should. Alternately the symbol definitions could come from a library but as to which library would be a question for the MSP device forum. 

I have defined all the symbols in their respective .c  files and declared them in .h file. I think my linker is not able to link all these files but why ? I am not able to resolve this problem please suggest something. I have read about these type of problem in ti forum but everywhere they says some file is missing in file search path. which file not able to find this ?

harish yadav said:

I have defined all the symbols in their respective .c  files and declared them in .h file.

Could you pick a couple of the unresolved symbols mentioned in the errors and attach the C source files where those functions are defined?
Also please save the full output in the CCS build console to a text file and attach it here.

Since as said it was related to msp430 forum so i posted it there also. I dont know whether it is related to msp or ccs forum.

hello,

this is my lcd.h file:

/*
 * lcd.h
 *
 *  Created on: Mar 21, 2017
 *      Author: acer
 */
#include "inc/hw659.h"

#ifndef DRIVERLIBRARY_LCD_H_
#define DRIVERLIBRARY_LCD_H_

#define lcd_RS   BIT1
#define lcd_EN   BIT2
#define lcd_D4   BIT3
#define lcd_D5   BIT4
#define lcd_D6   BIT5
#define lcd_D7   BIT6
#define lcd_DIR    P1DIR
#define lcd_PORT   P1OUT
#define lcd_PORT_MASK   (lcd_EN  | lcd_D4 |  lcd_D5 | lcd_D6 | lcd_D7)

extern void lcd_cmd(char);
extern void lcd_pulse(void);
extern void lcd_init(void);
extern void lcd_data(unsigned char);
extern void set_cursor_pos(int,int );
extern void clearport();
extern void busychck(void);
extern void clear_lcd(void);
extern void display(unsigned char* word);



#endif /* DRIVERLIBRARY_LCD_H_ */

this is my 2 functions in c file in which error occurs:

void set_cursor_pos(int row,int col)
{
    char addr;
    if(row==0)
        addr=0x00;     //row 0 then addr=0x00h(RAM addr)
    else
        addr=0x40;  //row 1 den addr=0x40h
    addr |=col;     //add offset for column
    lcd_cmd(0x80|addr);  //set DDRAM addr for display
}

void clear_lcd()
{
        lcd_cmd(0x01);   //CLEAR DISPLAY
            //_delay_cycles(1000);
        lcd_cmd(0x02);   //RETURN HOME
        //_delay_cycles(100000);
}

and i am attaching the console text file as u said.

**** Build of configuration Debug for project rmu ****

"C:\\ti\\ccsv6\\utils\\bin\\gmake" -k all 
'Building target: rmu.out'
'Invoking: MSP430 Linker'
"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_16.12.0.STS/bin/cl430" -vmspx --data_model=restricted --use_hw_mpy=F5 --advice:power="all" --define=__MSP430F5659__ -g --printf_support=full --diag_warning=225 --diag_wrap=off --display_error_number --silicon_errata=CPU21 --silicon_errata=CPU22 --silicon_errata=CPU40 -z -m"rmu.map" --heap_size=160 --stack_size=160 --cinit_hold_wdt=on -i"C:/ti/ccsv6/ccs_base/msp430/include" -i"C:/ti/ccsv6/ccs_base/msp430/lib/5xx_6xx_FRxx" -i"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_16.12.0.STS/lib" -i"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_16.12.0.STS/include" -i"D:/wrkspce/rmu/driverlibrary" --reread_libs --diag_wrap=off --display_error_number --warn_sections --xml_link_info="rmu_linkInfo.xml" --use_hw_mpy=F5 --rom_model -o "rmu.out" "./main.obj" "./driverlibrary/adc.obj" "./driverlibrary/lcd.obj" "./driverlibrary/modbus.obj" "./driverlibrary/uarta1.obj" "../lnk_msp430f5659.cmd"  -llibmath.a -llibc.a 
<Linking>

 undefined         first referenced
  symbol               in file     
 ---------         ----------------
 UART_GETSTRING    ./main.obj      
 UART_INIT         ./main.obj      
 UART_PUTSTRING    ./main.obj      
 build_querypacket ./main.obj      
 clear_lcd         ./main.obj      
remark #10371-D: (ULP 1.1) Detected no uses of low power mode state changing instructions
 display           ./main.obj      
remark #10372-D: (ULP 4.1) Detected uninitialized Port B in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.
remark #10372-D: (ULP 4.1) Detected uninitialized Port C in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.
remark #10372-D: (ULP 4.1) Detected uninitialized Port D in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.
remark #10372-D: (ULP 4.1) Detected uninitialized Port E in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.

>> Compilation failure
makefile:147: recipe for target 'rmu.out' failed
 lcd_init          ./main.obj      
 set_cursor_pos    ./main.obj      

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "rmu.out" not built
gmake: *** [rmu.out] Error 1
gmake: Target 'all' not remade because of errors.

**** Build Finished ****

harish yadav said:

this is my 2 functions in c file in which error occurs:

Is this in the lcd.c file? Could you please attach that file here and also attach main.c?

Also please do a project rebuild and save off the contents of the CCS build console and attach here. The current build log only shows the link step.

hello,

I am truncating my project to only lcd file and building it but showing the same error. Since my code was previously working on msp430g2553 but i am migrating to msp430f5659. Now i am trying to build my project again on msp430g2553 in this format, initially i define and declare function in header file but from now onwards i am trying to work in stdandar fromat. I am attaching the log file, main.c, lcd.h, hw659.h, driverlib.h file here for msp430g2553 mcu.

thanx a lot AratiG,

It worked for me......