Softdevice Update

[Torsten Robitzki]

Hello,

when a bootloader wants to update the softdevice, I think it has to first store the SD binary somewhere in flash memory and then to use sd_mbr_command to ask the master boot record to copy the SD to its final destination. Right?

I guess this doesn't include the master boot record that is usually part of the SD binaries that are shipped with the SDKs. So I would have to strip the master boot record from the SD binaries, copy the remaining SD binary to flash memory and then use 0x1000 as destination (dst) address in a call to sd_mbr_command, right?

Kind regards and thanks in advance,

Torsten

[Hung Bui]

Hi Torsten,

I assume you are making your own bootloader, not using ours. And you are correct, the bootloader/application need to ask the mbr to swap the softdevice. And when you call sd_mbr_command() with SD_MBR_COMMAND_COPY_SD command to swap, you swap only the softdevice starting from 0x1000. The MBR stays.

[Torsten Robitzki]

Ups, sorry! I've missed that you were responding. Thanks a lot for confirming my thoughts! :-)