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2412743_en-US
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Hello NXP Team, I am using MPC5775B with RAppID Bootloader for CAN flashing.
I do not have the RAppID FBL source code, so I cannot modify the existing FBL.
Is there a supported mechanism for the running application to request the existing RAppID FBL to enter programming mode?
If yes, what is the required Application → FBL entry sequence for MPC5775B?
Does this require a specific reset/boot mechanism, or does RAppID provide another way to request FBL from the application?
Hello,
There is no built-in, documented API in the RAppID FBL for the running application to programmatically request FBL entry. The RAppID bootloader for MPC57xx is a closed-binary, flash-resident bootloader (distributed as a pre-compiled .rbf file) with no source code provided and no modification possible.
The standard mechanism to trigger it is a reset + boot-time flag check, not a runtime call from the application.
Best regards,
Peter
Is this a specific RAM address/magic value, reset-cause condition, configuration field, or another mechanism? If there is an application-side procedure or documentation for setting this flag, could you please share it?