devkit reset esclation MPC5748g

[Mina_Sameh_26]

I have the NXP Devkit mpc5748g and know it tells me that it is in reset escalation mode how can I get out of this and get my board back to running

to make things easier i have accidentally write a wrong application address in the memory area 0x00FA0000 which i believe is responsible for boot to jump an the application
I am using Core 0 for my application

[petervlna]

Hello,

No you don't need extra HW. Just debugger.

Have a look at this thread where I have explained it in details and also recovery procedures:

https://community.nxp.com/t5/MPC5xxx/MPC5746C-enter-reset-escalation/m-p/750582

best regards,

Peter

[davidtosenovjan]

The reason will be probably due to feature newly introduced with MPC57xx devices - it is called 'Functional' Reset Escalation and 'Destructive' Reset Escalation (MC_RGM_FRET and MC_RGM_DRET) and it causes that after predefined number of functional reset, destructive reset happen and after predefined number of destructive resets, device will stay in reset until next POR.

The solution is to stop the core just after power-on-reset, attach by debugger and erase MCU/reload the code.
With TRACE32 it can be done by “Halt core at power-on reset” feature (Select in the menu: MPC5XXX - Tools - Halt core at power-on reset.).

If you have only PeMicro debugger available, I have found another thread describing how to attach with PeMicro:
https://community.nxp.com/thread/504643

Also check whether you have properly attached power to the board (DEVKITs and similar boards may have jumpers for selecting power from USB or 5V barrel connector) and sometimes you may see such warning when MCU is just unpowered because of 5V power supply is not attached.

[Mina_Sameh_26]

Do i require any extra hardware tools to be able to debug the board using TRACE32 ?