How to start an application from bootloader at specified address?

RE: How to start an application from bootloader at specified address?

Fabien Comte — Wed, 02 Mar 2016 17:08:27 GMT

Secondary address is what you need (for me it's 0x00049000). I think in the case of nRF5x slots are not an hardware limitation but user chosen areas that fit with your need. Some adresses are fixed (SD memory model in documentation) but not the start of application if you have a bootloader.

RE: How to start an application from bootloader at specified address?

Alex Pristenskiy — Wed, 02 Mar 2016 12:28:52 GMT

Actually my minimal wish is to run app from bootloader: devzone.nordicsemi.com/.../

RE: How to start an application from bootloader at specified address?

Alex Pristenskiy — Wed, 02 Mar 2016 10:40:01 GMT

Thanks. The main question is what should be a value of SECONDARY_ADDRESS ? Because DFU_BANK_0_REGION_START is not equal to 0x1B000 So, SECONDARY_ADDRESS with a value 0x25000 doesn't work.

RE: How to start an application from bootloader at specified address?

Fabien Comte — Tue, 01 Mar 2016 19:25:25 GMT

Hello,

You could try to replace DFU_BANK_0_REGION_START by a variable called my_app_address.

unsigned int my_app_address;
if (condition)
{
   my_app_address = DFU_BANK_0_REGION_START;
}
else
{
   my_app_address = SECONDARY_ADDRESS;
}

if (bootloader_app_is_valid(my_app_address) && !bootloader_dfu_sd_in_progress())
{
   bootloader_app_start(my_app_address);
}

Each application should be compiled with the right ld file (ORIGIN is modified)