nrf52832 ble characteristics UUID read speed decreases after some times

[man]

Hello NRF ,

After I connect my phone (iphone ) to the nrf device ( ble peripheral advertising ) . I am sending rapdi data to one of the Char UUID , but after some time ( during connection ) the speed at which the data to be recived from app to nrf device becomes very slow .

below are the ble configurations done .

How Do fix this issue ?  

 

[man]

man said:

rapdi

- String of data from phone 

[man]

I think the MIN_CON_INTERVAL is the issue . I made it 8ms and the issue is not coming . Is there anything to look into ?

[man]

Also ,how can increase the speed ?

[Sigurd]

man said:

I made it 8ms and the issue is not coming

Great.If the connection interval is not within the min/max limit, the device will request the central to change the connection interval. So likely the connection interval was changed to a value within 100/200 ms after some time, and this impacted the throughput of your application. 

If you are sending a lot of data, you might want to increase the value of NRF_SDH_BLE_GAP_EVENT_LENGTH in sdk_config.h

[man]

Sigurd said:

If you are sending a lot of data, you might want to increase the value of NRF_SDH_BLE_GAP_EVENT_LENGTH in sdk_config.h

- This worked . thanks .