OTA - DFU in MDBT40 board.

[Abhimanyu K K]

I'm a beginner and I have only 1 month experience in BLE. I have done some example programs on my MDBT40 board. I flash it in Keil uVision 5 and flashing through ST-Link. Now I'm looking for OTA-DFU. I watched many tutorials and documents, in every they are using a board with some buttons and LED, but in my board there is only 2 LEDs connected to GPIO0 & GPIO1. My board image is attached with this.

Please help me to do DFU through OTA in this board.

[himanshu pande]

MDBT40 is based on nrf51822. Check out the compatibility matrix and build the relevant example from the SDK(Open or Secure bootloader). Simply flashing the bootloader and softdevice, will allow you DFU of the application.

If you want to DFU while running the application, you will have to add the Nordic DFU service to the application.

Compatibility matrix:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Findex.html

[Abhimanyu K K]

Can you  please send me a Bootloader program.

While I'm flashing my Bootloader it is showing like this.

I'm using Keil uVision5. and using ST-Link.

[bjorn-spockeli]

Make sure that you erase the chip prior to flashing the bootloader. Use either nrfjprog or the nRF Programmer App in nRF Connect for Desktop. 

I have attached the precompiled bootloader project for the nRF51 DK. In order to test it you have to flash the attachd S130 SoftDevice and use one of the test images in the SDK. 

nrf51422_xxac_s130.hexs132_nrf52_3.0.0_softdevice.hex