topic variable optimized out in S32 Design Studio

variable optimized out

AhmadTurkmani — Thu, 17 Aug 2023 13:15:30 GMT

hi,

im trying to read a led using the function Dio_ReadChannel. my code is written as shown below:

while (1)
{

Dio_WriteChannel(DioConf_DioChannel_myled, STD_HIGH);
TestDelay(5000000);
Dio_ReadChannel(DioConf_DioChannel_myled);
if ( Dio_ReadChannel(DioConf_DioChannel_myled) == true)
{
x = 1;

}
else
x=0;

im always getting x as an optimized out:

i want to see the value of my variable can anyone help me?

thank you.

Re: variable optimized out

VaneB — Thu, 17 Aug 2023 19:41:10 GMT

Hi @AhmadTurkmani

It means you compiled an optimization level different than the default, so the gcc optimizer found that some of your variables were redundant in some way that allowed them to be optimized away. Compile with optimization disabled if you want to see such variables (this is generally a good idea for debug builds in any case).

B.R.

VaneB

Re: variable optimized out

AhmadTurkmani — Fri, 18 Aug 2023 06:57:31 GMT

How can i disable optimization?

Re: variable optimized out

VaneB — Mon, 21 Aug 2023 16:05:58 GMT

Hi @AhmadTurkmani

Go to the project properties -> C/C++ Build -> Settings -> Optimization.