This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

nRF52840 Throughput

Hi there,

I have a custom built board with the nRF52840 and I'm trying to consistently transmit roughly 8 kilobytes per second or 64 kbits/s which seems way under the what Bluetooth 5 is capable of. However, when using the nRF Connect app on a Galaxy Note 8 and 10, I am unable to consistently receive this data rate for even a minute.

I have the connection priority set to high which seems to default to 15 ms intervals and the MTU is set to 244. Any ideas on what I could be doing wrong or what I could do differently?

Best

-Will

Parents
  • Hi Will

    Have you tested this with a development kit? Please do so in order to rule out whether this is a hardware or software issue. And how are you transferring the data between the nRF chip and the phone?

    Best regards,

    Simon

  • Hey Simon, 

    I have tested this with the nRF52840 development kit and I am experiencing the same occurrence. I'm not sure I understand your question but the data is being transferred via Bluetooth between the nRF chip and the phone and on the phone-side, I am using the nRF Connect app to view the data. I have also tried to send randomly generated data to make sure that it wasn't my specific application that was causing the issue. I have a feeling that Android has some kind of protocol to handle Bluetooth connections and is not allowing the user to dedicate additional time to a single Bluetooth connection. Any ideas or insights would be much appreciated.

    -Will 

Reply
  • Hey Simon, 

    I have tested this with the nRF52840 development kit and I am experiencing the same occurrence. I'm not sure I understand your question but the data is being transferred via Bluetooth between the nRF chip and the phone and on the phone-side, I am using the nRF Connect app to view the data. I have also tried to send randomly generated data to make sure that it wasn't my specific application that was causing the issue. I have a feeling that Android has some kind of protocol to handle Bluetooth connections and is not allowing the user to dedicate additional time to a single Bluetooth connection. Any ideas or insights would be much appreciated.

    -Will 

Children
No Data
Related