Sharing the problems encountered when calling cbrevt and rfft functions in CCS

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Sharing the problems encountered when calling cbrevt and rfft functions in CCS [Copy link]

-------------------------  DEC5502_CODEC.pjt - Debug  -------------------------
[DEC5502_CODEC.c] "C:\DSP.com/forum.php?mod=forumdisplay&fid=58" target="_blank" class="relatedlink">CCStudio_v3.3\C5500\cgtools\bin\cl55" -g -q -pdv -fr"C:/CCStudio_v3.3/MyProjects/DEC5502_CODEC_2/Debug" -d"_DEBUG" -d"CHIP_5502" -ml -@"Debug.lkf" "DEC5502_CODEC.c"

[Linking...] "C:\CCStudio_v3.3\C5500\cgtools\bin\cl55" -@"Debug.lkf"


undefined first referenced symbol in file --------- ---------------- _cfft_1 C:\\CCStudio_v3.3\\MyProjects\\DEC5502_CODEC_2\\Debug\\DEC5502_CODEC.obj >> error: symbol referencing errors - './Debug/DEC5502_CODEC.out' not built >> Compilation failure Build Complete, 2 Errors, 0 Warnings, 0 Remarks. My problem is that the call is wrong: The original call is cbrev(jf,jf,WINDOW/2); rfft(jf,WINDOW,1); Then I changed it to: cbrev(jf,jf,WINDOW/2); rfft(jf,WINDOW, SCALE);