Hello i have a rigado BMD-300 module and i would like to flash a new version of softdevice app and bootloader but i want to protect the UICR memory because that is where the MAC addr of the module is stored.
Is there any way to flash everything without touching the UICR ?
If so can you tell me a better way do to this ?
Thanks for the help
UICR will be deleted if you erase all. However if you erase only the pages you use for your application you should be able to flash again without erasing the uicr. i.e. use the sector erase option when programming with nRFjprog.
--program <hex_file> [--sectorerase | --chiperase | --sectoranduicrerase]
[--qspisectorerase | --qspichiperase]
Programs the specified hex_file into the device.
If the target area to program is not erased, the
--program operation will fail unless an erase
option is given. Valid erase operations for
the internal flash memory are --sectorerase,
--sectoranduicrerase and --chiperase. If
--chiperase is given, all the available user
non-volatile memory, including UICR, will be
erased before programming. If --sectorerase is
given, only the targeted non-volatile memory pages
excluding UICR will be erased. If
--sectoranduicrerase is given, only the targeted
non-volatile memory pages including UICR will be
erased. Note that the --sectoranduicrerase and
--sectorerase operations normally take
significantly longer time compared to --chiperase
operation so use them with caution. If your
device is equipped with a QSPI peripheral and an
external memory device is present, data targeting
the XIP region will be written to the external
memory device. The first address of the XIP region
is considered as address 0 of the external memory
device. To determine if an external memory device
is present, nrfjprog checks the MemSize paramter
from QspiDefault.ini file or from the QSPI
configuration ini file given with the --qspiini
option. If the target area to program is not
erased, the --program operation will fail unless
an erase option is given. Valid erase operations
for the external memory device are --qspichiperase
and --qspisectorerase. If --qspichiperase is
given, the external memory device will be erased.
If the --qspisectorerase is given, only 4kB pages
pages from the targeted external memory device
will be erased. Note that --qspichiperase
operation may take several minutes. The --program
command can be combined with the --verify
operation. It can also be combined with either the
--reset or the --debugreset operations. the reset
will occur after the flash operation in order to
start the execution.
Limitations:
For nRF51 devices, the --sectoranduicrerase
operation is not available.
For nRF51 devices, if the hex_file provided
contains sectors belonging to region 0, the
--program operation will fail.
For nRF51 devices, the --qspisectorerase and
--qspichiperase operations are not available.
For nRF52 devices, the --qspisectorerase and
--qspichiperase operations are not available
unless the device is equipped with a QSPI
peripheral and an external memory is connected. To
determine if an external memory is present, the
MemSize parameter from QspiDefault.ini file or
from the QSPI configuration ini file given with
the --qspiini option is evaluated
Can provide an example of the command? Lets said I would like to protect my serial number from been erased.
And the example of the serial I will write to is as below:
nrfjprog -f nrf52 --memwr 0x10001080 --val 0xCAFEBABE
