I solved the issue. The size should be multiple of 4096 (sector size). An other problem that I am facing is that when I run the lwm2m-client over openthread and the last address of the program is 0x59

#flash #nrf52840

Hello, I have made a device DTS overlay file to create my partitions in flash, so I have 3 different partitions (banks) lets say A, B, C respectively. It seems to work. However, each time I am trying

#flash #nrf52840

Hi, probably a very simple question. How do I get in my C code the MAC address which is printed on the nrf52840 dongle? Thanks Marcel

#nrf52840

Hi Nikos, The Cryptocell requires proprietary software that is not part of Zephyr. If you’d like to use the Cryptocell I recommend you take a look at Nordic’s Zephyr-based SDK, the nRF Connect SDK: ht

#nrf52840 #crypto

Hello, I am going to use mbedtls library in order for sha256 hash calculation and ECDSA verify using nrf52840-dk. I can not find any configuration parameter for hardware acceleration. The device suppo

#nrf52840 #crypto

Hi all, I would like to ask you if I can change the lwm2m observer period. There is enough delay (some seconds), after calling lwm2m_engine_set_u8("5/0/3", STATE_IDLE) until the server get informed.

#nrf52840 #networking

Are you in interruption context when trying to read/write in the callback ? I doubt this is a good idea to access a filesystem from such place... (may sleep, may block...) You should defer the read/wr

#nrf52840 #nvs

Update: if I write and read in a function without some condition (i.e button is pressed) works fine. The problem is when the write/read process is taking place to button_pressed callback function.

#nrf52840 #nvs

Hello again, I am following the NVS sample to create my own code in order to write to the NVS filesystem. The idea is to change a uint8 variable in the NVS when the button is pressed. Therefore, when

#nrf52840 #nvs

I just meant that OpenThread uses mbedTLS as it’s crypto library, for instance: https://github.com/openthread/openthread/blob/master/src/core/crypto/sha256.cpp#L41 Regards, Robert

#nrf52840 #networking

Perfect. I will prepare the configuration for the contribution. I made the changes you proposed and worked (I set MAX_PACKET_SIZE to 1024). Just to be clear by what do you mean by "OT use mbedTLS inte

#nrf52840 #networking

Hi Nikos, Contributions are always welcome, would be also good to contribute the overlay-ot.conf to the lwm2m_client sample, once you have configuration that is proven to work. We even have an outstan

#nrf52840 #networking

Thanks Robert, with your help I managed to make the OTBR work (I can make a documentation as contribution for the project if you are interested). Although, the device is registered to the leshan serve

#nrf52840 #networking

Hi Nikos, If you use CONF_FILE option, you need to specify both, prj.conf and the overlay: “-- -DCONF_FILE="prj.conf overlay-usb-nrf-br.conf"”. There’s also an OVERLAY_CONFIG option, where you can spe

#nrf52840 #networking

I am a bit lost. I am trying to compile the OpenThread NCP sample in order to connect the nrf52840 dk with the raspberry which will be running the openthread border router docker image. In order to co

#nrf52840 #networking

I have a bunch of this type errors " #error "CONFIG_UART_INTERRUPT_DRIVEN must be set for CDC ACM driver", "error: 'const struct uart_driver_api' has no member named 'fifo_fill' 999 | .fifo_fill = cdc

#nrf52840 #networking

Hi, I’ve just checked current master, and building with "overlay-usb-nrf-br.conf" worked fine for me. Perhaps you need to clear your build directory? Anyway, unless I miss something, it should be ok t

#nrf52840 #networking

I am following this https://openthread.io/certification/border-router/device-setup tutorial. So I will USB. However, when I am trying to use "overlay-usb-nrf-br.conf" I have some errors while compilin

#nrf52840 #networking

Hi Nikos, The project file selection depends on whether you want to use USB CDC or UART for the communication, by default UART is used, applying ` overlay-usb-nrf-br.conf` will switch to USB (you’ll n

#nrf52840 #networking

Thank you Robert, so the idea is to flash this https://docs.zephyrproject.org/latest/samples/net/openthread/ncp/README.html on my nrf52840-dk and then using the openthread border router implementation

#nrf52840 #networking