Want to use __no_init CHAR gPassthruMode[4] @ APP_WORKSPACE_BLOCK_START;

[Hiren Bhuva]

Hello Community,

I want to use __no_init CHAR gPassthruMode[4] @ APP_WORKSPACE_BLOCK_START;

Here APP_WORKSPACE_BLOCK_START is the flash address.

Can anyone suggest, how can we use this.

Thanks in advance,

Hiren

[TDK]

Different IDEs have different ways of doing this. Not familiar with IAR.

Another option is to just use a pointer, which is compatible across IDEs.

CHAR * gPassThruMode = (CHAR *) APP_WORKSPACE_BLOCK_START;

 You'd need to ensure that space isn't being used for other things by the linker.

[Hiren Bhuva]

Hi @TDK​ ,

Thanks for the reply,

I just want to know that can we use flash address( Instead of RAM) directly for this?

Thanks,

Hiren

[TDK · Accepted solution]

You can, but that doesn't eliminate the limitations of flash, namely that it must be unlocked and erased before written. There is no limitation on reading it.