How to get an image from phone and display it on EPD

[Pavan kumar]

Hii all,

I would like to create a project that take an input from any Bluetooth device and display it on display device like EPD. Till now I just hard coded the image and transfer it through SPI to the EPD to display that image. But I now I wanted to send an image from any other device to display on the EPD. Can any one help me in this regards I am using nrf51 DK with SDK7.0.0 Thank you in advance

[Stian Røed Hafskjold]

There is no standard way of transferring files using Bluetooth Smart, since it is not designed for large data transfers. However, we have a custom Nordic UART service which can be used to transfer data. We have example code for both the nRF51 side and the phone side. The phone application sends strings of ascii data to the BLE peripheral.

You can find the source code of the Android/iOS side application here: www.nordicsemi.com/.../nRF-UART-App2

You can then create an app that is based on this UART app, and send the image file as a byte array. It shouldn't be hard to get this working.

The nRF51 side example code is called ble_app_uart and you can find this in the SDK. It is documented here: infocenter.nordicsemi.com/.../ble_sdk_app_nus_eval.html