RE: Connecting nRF52840 Dongle to EYSHCNZWZ Transceiver

ovrebekk — Mon, 26 Oct 2020 16:22:26 GMT

What you describe is definitely doable using the nRF52 devices, as long as you have the time to get all the pieces in place ;)

In the nRF5 SDK we have some examples using the Nordic UART service (NUS), which allows you to send custom strings back and forth between two devices.

We have one example which sets up an nRF52840 device as a NUS to USB bridge (running the CDC ACM 'virtual comport' USB class), meaning it can receive strings from another device running the NUS example and pass it over USB to a PC. This example should be a good starting point for the dongle.

Then on the sensor side you can run the ble_app_uart_c (NUS client) example, which can connect to the nRF52840 device and exchange data with it.
In theory then all you need to do on the sensor side is to write a driver to access your sensor, and pass the sensor data over the NUS service to the dongle.

As for the Mac application you can basically use any framework that allows you to connect to a serial port, allowing you to receive the data from the dongle. As a proof of concept you could simply use a standard terminal program.

When it comes to hardware I would strongly suggest starting your work using standard development kits (nRF52840DK for the dongle, and nRF52DK for the sensor side). Once you have a working prototype running on the devkits you can try to integrate it with the dongle and the EYSHCNZWZ module.

The devkits come with built in debugging capabilities making them much more practical for development.

Best regards
Torbjørn