用keil4编译时出现以下警告,一直看不明白什么意思,求帮助
Buildtarget'Target1'assemblingSTARTUP.A51...compilingLCD1602.c...compilingmain.c...li...
Build target 'Target 1'
assembling STARTUP.A51...
compiling LCD1602.c...
compiling main.c...
linking...
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_LCDSHOWSTR?LCD1602
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?CO?MAIN
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: ?_LCDSHOWSTR?BYTE
MODULE: main.obj (MAIN)
Program Size: data=20.1 xdata=92 code=826
"lesson13-2" - 0 Error(s), 3 Warning(s). 展开
assembling STARTUP.A51...
compiling LCD1602.c...
compiling main.c...
linking...
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_LCDSHOWSTR?LCD1602
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?CO?MAIN
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: ?_LCDSHOWSTR?BYTE
MODULE: main.obj (MAIN)
Program Size: data=20.1 xdata=92 code=826
"lesson13-2" - 0 Error(s), 3 Warning(s). 展开
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