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Recovery a MPC55xx with erased shadow

Question asked by gmgunderground on Sep 12, 2014
Latest reply on Sep 22, 2014 by Lukas Zadrapa

Hi to everyone, I have a MPC5554 with an erased shadow block, but code inside Flash and externa EEPROM is OK, I have checked it before turning off the board. Now my question is: is there some way to execute again code inside internal flash so I can program again the shadow (the application in flash has the routines to execute a RAM code)? BootCFG0 and BootCFG1 are both  LOW, so as described in de datasheet the CPU has to execute FLASH application, but it doesn't.

 

After some tests, now I'm able to connect to MPC5554 with CAN Seria Boot. If I write an application to download to RAM can I recover my SHADOW or it's time lost?

 

Best regards

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