How can i send twi data(like accelerometer) by bluetooth to another Nordic?

[lorenzot98]

Good morning, i would want to develop a code in order to have a twi sensor(like an accelerometer) and communicate its data by Bluetooth to another board Nordic, or computer. Now i have two Nordic nrf52840. How can i solve this? Using NUS? And how? Thanks

[Jørgen Holmefjord]

Hi,

It is possible to send TWI sensor data using NUS, or you can create your own custom service/characteristics for sending the data, by following these tutorials:

• Bluetooth low energy Services
• Bluetooth low energy Characteristics

If you send the data through NUS as strings, the data will take more space than necessary, but you can send binary data through NUS as well if you want.

Best regards,
Jørgen

[lorenzot98]

Perfect thanks! Sorry if I use NUS service and i want to send accelerations, gyroscopes and temperature simultaneosly,  i have to work with the uart _event_handler by adding different ble_nus_data_send cases, doesn't it?  If instead I use service/characteristic method , must i create a single service and characteristic for every single data? Sorry because I'm not so familiar with BLE and now i will deepen with your tutorials thanks.