TM4C1231H6PM: Getting rid of '#179-D variable "..." was declared but never referenced'

Doug Broadwell85

Part Number: TM4C1231H6PM

I have a number of const "variables" for things like the flag bits in a register, I define all of them but some I don't use, which generates a bunch of 179-D error messages.

I was able to get rid this error from actual variables that are being used as a Bit Bucket by declaring them volatile, any ways to do this for const values?

Thanks

Doug

9 months ago

0 Doug Broadwell85 9 months ago

Intellectual 300 points

I should add: CCS v 10.4.0.00006

0 George Mock 9 months ago

TI__Guru**** 232940 points

Doug Broadwell85 said:
I was able to get rid this error from actual variables that are being used as a Bit Bucket by declaring them volatile

That probably made the generated code run much slower. Did you check?

It would be better to suppress the diagnostic. You can do it either from the command line, or with #pragma statements in the source. For details, please search the TI ARM compiler manual for the sub-chapter titled Understanding Diagnostic Messages and the sub-chapter titled The Diagnostic Message Pragmas.

Thanks and regards,

-George

0 Doug Broadwell85 9 months ago in reply to George Mock

Intellectual 300 points

No, my code does not run any slower as the Bit Buckets are very seldomly accessed.

Thanks for the #pragma advice, I looked for this before but somehow missed it.

Thanks George!

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TM4C1231H6PM: Getting rid of '#179-D variable "..." was declared but never referenced'