in code directory stricture , in the folder SourceportableGCC , there are 2 folders
ARM_CM3 and ARM_CM3_MPU . What is the difference between these two ? Regards
Lisa

One does not use the MPU (memory protection unit) and runs all the tasks in privileged mode.  The other does use the MPU and tasks can be created in privileged or unprivileged mode. http://www.freertos.org/FreeRTOS-MPU-memory-protection-unit.html Regards.

So porting “every” arm cortex-m3 microcontroller running on gcc compilor should use portableGCCARM_CM3 folder ? ( if MPU is not needed)

Yes.  The code in that directory is the code to use for *all* Cortex-M3 ports that don’t use the MPU, and *all* Cortex-M4 ports that don’t use either the MPU or FPU. Regards.

A little confused again… I am sorry for that … TI has arm cortex M3 based microcontroller
Atmel also has arm cortex M3 based controller so both of these micro controller running on gcc compiler should use code from  portableGCCARM_CM3  folder ? -Lisa

Yes.

I understood . :) richardbarry thank you for your immediate response.
i have sent a message to you. hope u see it

Based on the understanding , let me tell you my setup *** I am porting Microcontroller Samsung XXXX which is based on ARM cortex-m3 on IAR tools ** 1) so i dont have to change anything .because SourceportableIARARM_CM3 code is already present.
2) and Source folder contains queue.c , list.c,tasks.c files and Sourceinclude folder contains other header files necessary 3) and I will create a demo application inside Demo/CORTEX_SamsungXXX_IAR  folder Is this correct way ? Regards
Lisa

somebody can say YES / NO :))) ??

Yes. Regards.

superb .. richard,  i would love to see ur replies -Lisa

i decided to take an already existing demo application and use it.
which DEMO application you suggest for a starter like me ? so that i can do minor modification n reuse it ?
( My set up is mentioned above at reply No 8) Regards
Lisa