Logging Data over BLE UART from nRF Device to Laptop

[kmassa5]

Hi,

I am currently using the nRF logging module to log data from a nRF52832-DK to my laptop via a serial connection. However, I would like to move over to BLE logging for the sake of convenience. I've been looking at the ble_app_uart example for a while, but I'm having trouble applying it to my specific use case.

Instead of calling NRF_LOG_INFO() to send data to my laptop over a serial connection, how can I implement a similar function to send data to my laptop over BLE?

Thanks!

[Jared]

Hi,

The ble_app_uart example uses the NUS service to transmit data over BLE. The peripheral does this by setting up a GATT service that sends notifications to the GAP central when the attribute is updated with ble_nus_data_send(). 

regards

Jared 

[kmassa5]

So if I wanted to send a bunch of log data all at once over BLE (data stored in FDS) to my laptop, is there a better way to do it than the method used in ble_app_uart? I would basically be calling ble_nus_data_send() for each line I wanted to send (probably up to 500 lines of data).

[Jared]

The easiest way is probably to base your project on the NUS service as it has already implemented a way for you to transmit data between the central and the peripheral.

[kmassa5]

Hi,

So now I'm sending information from my board to the nRF Toolbox UART Logger. However, it's showing up as unicode (0x#####################). How can I translate this to human-readable information?

Thanks!

[Jared]

Hi,

It should be printed as ASCII characters as in the SDK example. How does your send function and init function of the service and characteristics look like? 

regards

Jared