µVision Build Log
Tool Versions:
IDE-Version: ¦ÌVision V5.25.3.0
Copyright (C) 2018 ARM Ltd and ARM Germany GmbH. All rights reserved.
License Information: a b, c, LIC=----
 
Tool Versions:
Toolchain:       DK251 Develpers Kit  Version: 5.60.0.0
Toolchain Path:  C:\Keil_v5\C251\BIN
C Compiler:      C251.exe V5.60.0.0
Assembler:       A251.exe V4.69.13.0
Linker/Locator:  L251.exe V4.66.93.0
Library Manager: LIB251.exe V4.30.1.0
Hex Converter:   OH251.exe V1.47.0.0
CPU DLL:         S251.DLL V3.129.0.0
Dialog DLL:      DCORE51.DLL V2.81.6.0 
Project:
C:\Users\gx\Desktop\µÚÊ®¶þ¼¯\demo\demo.uvproj
Project File Date:  12/04/2024

Output:
Rebuild target 'Target 1'
compiling main.c...
compiling config.c...
compiling task.c...
compiling io.c...
user\io.c(62): warning C140: 'USB_Reset_U' undefined; assuming 'extern int USB_Reset_U()'
linking...
*** ERROR L127: UNRESOLVED EXTERNAL SYMBOL
    SYMBOL:  PW_write_Task
    MODULE:  .\Objects\task.obj (task)
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  PW_write_Task
    MODULE:  .\Objects\task.obj (task)
    ADDRESS: FF2027H
*** WARNING L25: DATA TYPES DIFFERENT
    SYMBOL:  USB_Reset_U
    MODULE:  .\Objects\io.obj (io)
   DEFINED:  .\Objects\config.obj (config)
Program Size: data=8.3 edata+hdata=491 xdata=192 const=162 code=8170
Target not created.
Build Time Elapsed:  00:00:01