How to define CPU ID in multiprocessor design based on NIOS II CPU?

[Altera_Forum]

Hi,  

I have try this code in my NIOS code :  printf("NIOS %d is waiting for control signal\n",ALT_CPU_CPU_ID_VALUE);  I have implement 3 nios processor in my project. Why this ALT_CPU_CPU_ID_VALUE function always return 0 value? Each core always returned 0 values instead 1,2,3 ?  it should be show this message : NIOS 0 is waiting for control signal NIOS 1 is waiting for control signal NIOS 2 is waiting for control signal  However the fact , the message look like this : NIOS 0 is waiting for control signal NIOS 0 is waiting for control signal NIOS 0 is waiting for control signal  Need for advice.. Thank you

[Altera_Forum]

ALT_CPU_CPU_ID_VALUE is nothing more than a# define in the "system.h" file of the BSP. It is not a function. 

 You will need to create a different a BSP project for each NIOS processor in your design. This will result in a different ALT_CPU_CPU_ID_VALUE in each BSP.  Alternatively, connect a different System ID peripheral to each NIOS processor, with the value set to match the CPU ID. You can then read the value of the peripheral instead of using the# define. That way it will be a run-time calculated value, not a compile time value.

[Altera_Forum]

Many thanks! It worked!