Address shift of PBL causing Erase Memory Failure : MPC5777C

[kasi_lakshmiman]

Hi,

My bootloader works fine if PBL is located at address: 0x00000000. But if i shift the PBL address to 0x00800000 address range, It gives me "Erase Memory Failure" at the time of application download. I am using MPC5777C controller. Help me resolving this issue. What are the necessary changes to be done to resolve this issue?

Thanks.

[lukaszadrapa · Accepted solution]

Hi,

it sounds like Read-While-Write (RWW) problem. Notice that RWW is possible only between partitions. If a partition is being programmed or erased, it's not possible to access this partition.

So, this is the first thing to check. The code must be executed from another partition or from RAM. Also interrupts could cause issues - either disable it or ensure that interrupts does not touch partitions which are going to be erased or programmed.

Regards,

Lukas