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nRF Cloud CoAP shadow GET fails for 7+ hours — DTLS gateway healthy, shadow service unresponsive 0

nRF Cloud — CoAP transport (device shadow) Date of incident: 2026-06-22, ~13:04 UTC — still unresolved at 20:42 UTC (7h38m+) Device: nRF9151, modem firmware mfw_nrf91x1_2...
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0 replies

Started 10 hours ago
by Ajit Kuttikatte
Not Answered
nRF52832 SPI flash init/boot failure 0

We are doing a DFU over BLE with the second MCUboot partition on an external flash. Some times Zephyr can't access the flash after booting, resulting in a bricked device,...
37 views

0 replies

Started 13 hours ago
by Revilo
Not Answered
ECC key derivation and agreement 0

Hey, I am trying to implement ecdh key agreement and derivation, but I am getting PSA_ERROR_INVALID_ARGUMENT (-135) from psa_key_derivation_key_agreement: Any idea what is...
30 views

0 replies

Started 17 hours ago
by thomasGronroos
Not Answered
SAADC t_PWRUP and Burst Mode Sub-Sample Overhead 0

Hi, I have a question regarding the SAADC timing parameters. I could not find an official specification for the SAADC power-up time (t_PWRUP). While measuring it on my...
- development
- software
- adc
- nRF54L15
32 views

0 replies

Started 18 hours ago
by Adnan Ashraf
Not Answered
Sanity-checking interest: nRF5340 board with integrated CMSIS-DAP debug + jumper-based current measurement, under the DK's price 0

Hi all — I'm developing a custom nRF5340 development board (Raytac MDBT53-1M) and would value the community's honest read on whether it's worth producing. The goal is...
231 views

0 replies

Started 11 days ago
by whitehand110

Recent in the DevZone Blog

nRF51822/nRF51422 getting started and documentation overview

Stefan Birnir Sverrisson

BLE and ANT development kit Nordic Semiconductor offers the nRF51 series for BLE and/or ANT wireless connectivity. The nRF51 (nRF51422 or nRF51822) is a System on Chip, which means it has internal microcontroller…
- 30 Oct 2014
Keil in-line program through DFU BLE

scytulip

I am investigating Master Emulator API and found something interesting that can help you program your device through BLE DFU in Keil. This method calls the python script used in MCP. If you can use MCP…
- 29 Oct 2014
Nordic Semiconductor nRF51822 Firmware for Background Data Recording

scytulip

#Nordic Semiconductor nRF51822 Firmware for Background Data Recording Updating on https://github.com/scytulip/nrf51-back-rec Design Objective This firmware is designed for low-cost long-time low-power…
- 23 Oct 2014
Nordic nRF51822 ARM Cortex-M0 Development using emIDE

Hugh

Nordic nRF51822 ARM Cortex-M0 Development using emIDE To avoid the hefty charges with commercial compilers I tried emIDE with some success; here are the settings I used for the EV Kit Official emIDE…
- 22 Oct 2014
Beacon Kit - Mistake in Ref_Design_UG_v1.0

Salman

I connected the programming header as described in "nRF6930_Beacon_Ref_Design_UG_v1.0.pdf" 5.5.4 Programming interface. I was trying to program Beacon Kit but failed many times then I compared it with…
- 10 Oct 2014
SD card interfacing

Salman

Hi, I have written SD & SDHC card routine for reading, writing and erasing data from SD card. It used the hardware SPI of nRF51822. NOTE: 1)Define the PINs of SD card first before initialing. 2)Define…
- 10 Oct 2014