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Content of this blog based on the documentation of BLE Secure DFU example and Bootloader module library in our SDK. Here we provide you with step by step introduction to make it easier to follow and test Secure DFU.The Secure DFU is the new DFU bootloader provided from nRF 5 SDK v12. The old bootloader in SDKv11 and earlier is called Legacy DFU. Secure DFU is not backward compatible with Legacy DFU. What you would need to prepare before we start: Up to date nRF5 SDK (minimum SDK v12) Python with...

The new Bluetooth 5 specification promises twice the speed and 4 times the range. Doubling the speed is achieved by increasing the on-air datarate to 2Mbps, while quadrupling the range is achieved by lowering the bitrate to increase the sensitivity of the receiver. We at Nordic have made a demo showing these features with our newest SoftDevice(s) and specifically our newest chip, the nRF52840. It was showcased at CES 2017 in January.Here is a more in depth description of the demo.The demo is based on the ...

PolyMCU is an Open Source Framework which has been designed to be as flexible as possible: host OS independent (support Linux, Windows, MacOS), support any toolchain (GCC, LLVM), any RTOS (ARM RTX, FreeRTOS), any micro-controller vendor SDK (Nordic Semiconductor, NXP, Freescale, ST). The framework is based on Cmake.One of the major benefit of the framework is your firmware development is unified across the different development environment and MCU Vendor SDKs.PolyMCU is not ano...

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Hi,I am trying to implement a Single Bank DFU over Bluetooth for my nRF51822 (256KB / 16KB RAM) using SDK v7.1 and Softdevice 110. I am using GCC to compile the bootloader and in order to switch from dual bank (which I was doing previously before my application size did not allow it anymore) to single mode was to change from dfu_dual_bank.c to dfu_single_bank.c in the makefile. The complied bootloader works fine as I can upload new firmware onto the chip using FOTA. But, if however the process is interrup...

Hi,I migrated an nrf52832 s132 application from SDK12.2.0 (sd v3) to SDK13 (sd v4.0.2). On the iPad and iPod Touch the NRF Connect app does not discover the services I added. However on Android the NRF Connect app detects all services. The iOS app can connect to the device, however not a single service is visible. Andriod does not have this issue.Is this something known to Nordic?...

Hi all,is there an example to add the uuid 128 of a custom service on advertising data?...