cm4 Master cm7 Slave

[mehmetkaradag]

Hello,

i am using MIMXRT1170. 

I want to make cm4 the master for the bootloader, but there is no example in the SDKs where cm4 is the master. Can you help me on how to master cm4?

thanks for your helps,

best regards,

[Omar_Anguiano]

Please refer to this application note to make the CM4 the primary core: i.MX RT1170 CM4 Primary Core Application (nxp.com) As NXP official SDK package only supports CM7 as main core (boot core), the enablement for this case is limited. Do not switch to CM4 as main core if it is not a must in application.

Best regards,
Omar

[mehmetkaradag]

So, is there any problem if cm4 is used as both bootloader and slave? I want to erase the flash sectors(write, read, etc.)used by cm7 from cm4, what method can I follow for this?

Thanks for your helping, 

[Omar_Anguiano]

Please consider that the primary core first inits the secondary core so your first need to boot from the primary core.
The CM4 can erase/write/read shared areas of the CM7 memory, you can consult the memory map at the RM.

Best regards,
Omar