51822 bluetooth

[Sergey]

Hi.

Using 51822 with BLE stack, I was faced with the problem of low transfer rates (5kb) on my android device (phone). It is very slow.

Can work 51822 with standart Bluetooth (not BLE)?

[Chris Lovett]

note also, to get those rates you will need to set the MIN_CONN_INTERVAL and MAX_CONN_INTERVAL to something smaller than the defaults they use in the sample apps. I've used SECOND_1_25_MS_UNITS / 20 for example, to get a nice steady stream of events from my device to my phone. The defaults are set to 1/2 a second which makes for a very low bandwidth indeed.

[Ole Morten]

Yes, connection parameters will significantly affect the throughput. Take a a look at this question for details on what connection parameters are: https://devzone.nordicsemi.com/index.php/what-is-connection-parameters

PS: In the latest SDKs, there is a nice macro you can use instead of the SECOND_1_25_MS_UNITS define, to set the intervals like this if you want 7.5 ms: MSEC_TO_UNITS(7.5, UNIT_1_25_MS)