RE: nRF5144 Boot Code Not Executing

Vidar Berg — Tue, 11 Sep 2018 17:28:29 GMT

Hi,

I guess he was referring to the UICR.BOOTLOADERADDR register stored in non-volatile memory (flash). The UICR section is mapped to the 0x10001000 address range, and writes to this section is not supported in Keil's flash algorithm (ignored). Please try to program the bootloader .hex file with nrfjprog instead: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/bledfu_example_running.html?cp=4_0_10_4_3_1_1_0_1#bledfu_example_running_program

Some links to relevant documentation:

Startup sequence with Softdevice

nrfjprog

RE: nRF5144 Boot Code Not Executing

Daniel Blesener — Mon, 10 Sep 2018 14:28:39 GMT

Also, a former employee here who wrote this code noted this when I wrote him:

"Vague memories of all this are coming back. If you are starting with a raw radio you may need to change a register value to ensure that the startup code within the soft device jumps to the correct code. I don’t recall the exact memory map but the code resides in one space and by default the radio will jump there. The boot code resides elsewhere and a register within the radio needs to be set to get the soft device to jump to the boot code. There is a document with instructions on programming the radio in the factory and this step is included in that document. "

Is this true? Anyone know what he is referring to?