hello,all

    In the file Env_flash.c ,there is a function as

 

#ifdef CFG_ENV_ADDR_REDUND

int  env_init(void)
{
 DECLARE_GLOBAL_DATA_PTR;

...

}

 

 

What's  CFG_ENV_ADDR_REDUND  mean?on which condition the function env_init(void) works.

and I want to know when env store in flash,where to store,and how to store the env and how can i get it from flash

 

thanks a lots