Send heavy data i.e more than 27 bytes and enable edit text on to Dk/beacon from mobile app nrfconnect

[Steffie]

I am using the nrf52 Dk with nrf52832 chip and i want to write bulk data onto the dk and then when i read the dk from the mobile app nrf connect, i want to see the written data and also want to edit the data from the app.

How can i achieve this?
I started using the ble app uart code in ble peripheral from the sdk 15.3.0 but did not understand how to achieve my goal.

Please suggest me the best solution.

Thanks

[Marjeris Romero]

Hi,

The best solution is to start with the ble_app_uart from the SDK as you did. Have you seen the documentation of the example in our infocenter? If something is unclear please try to explain in detail what was exactly you didn't understand.

Best regards,

Marjeris

[Steffie]

Hi,

Yes i went through the documentation. My area of concern is say suppose i have entered a bulk data for advertisement, how can i change the advertising data from the mobile app i.e via nrfConnect or nrf uart  i.e. i want to rewrite the data without having to program it via the DK ?

Thanks & Regards,

Steffie

[Marjeris Romero]

Hi Steffie,

I am not sure I understand what you want to do. You mention you want to advertise with a beacon, but you cannot send data to a beacon unless you connect to it.

Can you explain more in detail what you want to do with the data that you want to send to the nRF52? And are you sure you want to have a beacon or a general BLE peripheral you can connect to?

If you are just beginning with Bluetooth Low Energy development I strongly recommend the following tutorials:

• https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-advertising-a-beginners-tutorial

• https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial

• https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial

You can read advertisement data without connecting, but if you want to read and write data to services and characteristics to send data back and forth between your mobile phone and the nRF52 you will need to connect the devices.

Best regards,

Marjeris

[Steffie]

I have gone through the above links.

My query is still not sorted, what i basically want to achieve is that consider for eg. i want to store the data of a student on an external beacon, now considering i want to reuse the beacon by editing the information of one student with another using the mobile application either nrfConnect or nrf uart app. How can i achieve this ?

Hoping to hear soon.

Thanks & Regards,

Steffie

[Marjeris Romero]

Hi,

A beacon is a device that broadcast their identifier (UUID) to nearby devices, they are non-connectable. For writing data to a bluetooth device you will need to connect to the device (peripheral) from a central (for example your phone).

A peripheral device can be connected to or not depending on their advertisement type. So my first question to you will be, do you need a beacon application or not in your device?

If you don't need a beacon application but just a peripheral application you can connect to and send data back and forth using your phone I will use the ble_app_uart example. Have you tried this example?

Best regards,

Marjeris