MPC5606B - Shared data between application and bootloader

[jakubhusak]

Hello,

is there a register that could be used to share data between two applications (bootloader and application)? I need a place where I could put a message to be passed from application to bootloader when the reset is intentional and software initiated. In other words, I need a place that is guaranteed to be zeroed on POR and not initialized for other reset reasons.

Thanks

Jakub

[petervlna · Accepted solution]

Hi,

Please see the core reference manual:

https://www.nxp.com/docs/en/reference-manual/e200z0RM.pdf?fsrch=1&sr=1&pageNum=1 

chapter 2.4.4 Reset Settings

You can use GPRS, however they are undefined on POR. You can easily put a check of POR and initialize it to 0 in you SW.

Peter

[jakubhusak]

Thanks,

I decided to use bit different approach, but this would work too.

Dik

Jakub