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3
Flashing open CPU software
Both the application and network cores of the NORA-B1 modules are flashed over a common SWD
interface.
3.1 SWD flashing
A SEGGER J-Link programmer is required to program the NORA-B1 module flash over the SWD port.
☞
The EVK-NORA-B10x evaluation kit includes a J-LINK-OB that is used to program and debug
the on-board NORA-B1 as well as the target hardware for ANNA-B1, BMD-3, NINA-B1,
NINA-B3, NINA-B4, and NORA-B1 modules.
SEGGER Embedded Studio can be used to interactively program and debug application core and
network core code.
At the command line, the
programming both cores of the NORA-B1 module in one step. After building the project, open a
command prompt or terminal window, navigate to the build folder and enter:
west flash
An alternate method is to use the nRF Command Line Tools [20]. Open a command prompt and
execute the following commands to erase the NORA-B1:
nrfjprog -f NRF53 --coprocessor CP_NETWORK --eraseall
nrfjprog -f NRF53 --eraseall
Navigate to the build folder of the network sample and execute the following command to program
the network core:
nrfjprog -f NRF53 --coprocessor CP_NETWORK --program zephyr/zephyr.hex
Then navigate to the build folder of the application sample and enter the following command to
program the application core:
nrfjprog -f NRF53 --program zephyr/zephyr.hex
Finally, reset the NORA-B1 module with:
nrfjprog --pinreset
☞
External SEGGER J-Link debuggers work with NORA-B1 modules.
☞
The EVK-NORA-B1 evaluation kit incorporates an onboard debugger and can therefore be
flashed without any external debugger.
☞
The EVK-NORA-B1 evaluation kit onboard debugger can also be used to program custom
hardware with Nordic Semiconductor-based u-blox modules during development. The
debugger is not intended for use in production environments.
3.1.1
Flashing the software,
⚠
Flashing the software erases the Bluetooth device address, which must be rewritten to the module
after flashing. This is done manually or with the use of a script. Ensure that you make a note of
your Bluetooth device address before continuing with the flashing procedure. See section 2.2 for
additional information.
UBX-20027617 - R02
C1-Public
west
tool provided by the nRF Connect SDK provides a simple method of
Flashing open CPU software
NORA-B1 series - System integration manual
Page 20 of 58
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