Hello,
I'm trying to port uC/OS II (i bought the book) to MCB2140 and i'm using Keil CARM compiler. I took port from ucos-ii web site, which was written for IAR. I modified some stuff in asm file (difference betwen iar compiler and keil) but when I try to compile it I get this errors:
Build target 'MCB2140' compiling app.c... linking... *** WARNING L23: UNRESOLVED EXTERNAL SYMBOLS *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: OSTimeDly?T ADDRESS: 000000E6H *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: OSInit?T ADDRESS: 00000138H *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: OSTaskCreateExt?T ADDRESS: 0000015EH *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: OSStart?T ADDRESS: 0000016AH Program Size: data=1800 const=24 code=396 Target not created
Can anyone help me?
Thank you
"This are labels for routines written in assembly, and are called from C functions. But all errors have ?T at the symbol name."
When interfacing assembler and 'C', your assembler source must follow all the conventions of the 'C' Compiler.
If the 'C' Compiler wants "?T" in all the symbol names, then your assembler source must provide it.
You need to read the 'C' Compiler Manual for details of its calling conventions, naming conventions, and internal data representation...
Thank you. Will check the manual. I just thought that maybe you had some questions regarding this problem before :) Thanks againg and have a nice holiday.