Setting nRFChip in DFU Mode.

RE: Setting nRFChip in DFU Mode.

swathi p — Thu, 30 Jul 2020 06:56:08 GMT

Thanks for the response.It worked.

RE: Setting nRFChip in DFU Mode.

Vidar Berg — Thu, 30 Jul 2020 06:39:37 GMT

No, only the project Makefile in \examples\dfu\secure_bootloader\pca10040_ble\armgcc

RE: Setting nRFChip in DFU Mode.

swathi p — Thu, 30 Jul 2020 06:38:30 GMT

Do I need to change it in makefile.windows?

RE: Setting nRFChip in DFU Mode.

Vidar Berg — Thu, 30 Jul 2020 06:25:44 GMT

Hi,

But it should work if you modify the "flash" target in your Makefile as I showed in my previous reply.

RE: Setting nRFChip in DFU Mode.

swathi p — Thu, 30 Jul 2020 06:24:07 GMT

Hi,

First I have Build the program using make,then I have given commands mentioned above,after that gave command make flash.

But still there is no result.Is this the right way?If not,please let me know the right way.

Below is the log.

Thanks & Regards,

Swathi P

RE: Setting nRFChip in DFU Mode.

Vidar Berg — Wed, 29 Jul 2020 13:21:28 GMT

Hi,

Thanks for confirming. So I see you're using SDK v15.3.0 which means you're likely encountering the issue explained by Bjørn here: https://devzone.nordicsemi.com/f/nordic-q-a/56437/mbr-jumps-to-application-not-bootloader

A slight modification of the flash target to prevent the MBR from getting erased:

# Flash the program
flash: default
	@echo Flashing: s132_nrf52_6.1.1_softdevice.hex
	nrfjprog -f nrf52 --program $(SDK_ROOT)/components/softdevice/s132/hex/s132_nrf52_6.1.1_softdevice.hex --chiperase
	@echo Flashing: $(OUTPUT_DIRECTORY)/nrf52832_xxaa_s132.hex
	nrfjprog -f nrf52 --program $(OUTPUT_DIRECTORY)/nrf52832_xxaa_s132.hex
	nrfjprog -f nrf52 --reset

RE: Setting nRFChip in DFU Mode.

swathi p — Wed, 29 Jul 2020 13:01:20 GMT

Hi,

Thanks for the response.I tried flashing softdevice with mentioned cmmands.But there was no result.

Thanks & Regards,

Swathi P

RE: Setting nRFChip in DFU Mode.

Vidar Berg — Wed, 29 Jul 2020 12:51:37 GMT

Hi,

Maybe the Softdevice hasn't been programmed? Please try to run the Softdevice flash target to make sure it's programmed: "make flash_softdevice && make flash"

Best regards,

Vidar