BLE custom service transferring file

[YASH]

Hello there, I am a beginner, i want to know what changes should i make in the already existing example "ble_app_uart" so as to make my nrf51 development kit able to transfer and receive ".txt files" over ble.

Thanks in advance. Regards

[endnode]

Not much changes needed, simply define some protocol (message header?) on top of serial data pushed over Nordic BLE UART GATT Service (Characteristic) and encapsulate your file (or whatever else) to it. Bigger questions would be: how would TXT file get to embedded controller like nRF5x? And what it will do with it once received?;)

[YASH]

Thank you endnode. Ya, after receiving the .txt file, i wish to transfer it to an external SD card interfaced, which is already there from SDK 12.2.0. I want to knw how to transfer this .txt file to that? It will be great if u share any code snippet. Thank in advance Regards

[endnode]

No, sorry, I don't know about any example project/code to share. Maybe you will get lucky with searching on github/google or someone else on this forum. In the worst case it doesn't seem to be very hard to implement...

[YASH]

Ok. Thank you :)