How to Read DFU packet from external flash ?

[AKanade]

I have nRF52832 chip on my PCB and their is one external flash which is connected to nRF52832 through SPI.

i need to read new DFU packet from the external flash and send to peer device.

So, is their any function which reads the DFU packet from the external flash and send to the peer device.

If there is no function to do so, then please explain me that, how can i achieve this.

Provide me some brief idea for doing this.

[Hung Bui]

Hi Amit, 

We don't have an example that does what you described. We do have NRF52 firmware to work as the BLE bootloader to receive image from a master. But we don't have an example for a BLE DFU master on a nRF52. 

I afraid that you would need to develop your application from scratch. Following is the documentation and material that you can use to develop your project:

- DFU protocol: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=7_1_3_5_2_2

- UART DFU master example : https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader#h108sjziaxo3m81rkgr1has5r1d72qtu

- BLE DFU master code for Android, iOS , Windows in nRF Toolbox app, and in nRFConnect on Desktop.