Maximum performance on nrf51822 ?

[Fabien Comte]

Hello,

I work on nrf51822 with S130. I use nus service with uart_c and it's very slow (500 ms to send "abc" test string).

I am not energy limited on this application. How can i speed up ?

I have a 16 MHz quartz on my board and a 32 KHz but i use the default one (not sure the one used).

I tried to set connection times to minimum but i'm not sure if they are really used.

[Stefan Birnir Sverrisson]

Hi Fabien

When the device is in a connection, the throughput has much to do with the connection interval. There is much information on the connection interval and how that is updated dynamically on this thread.

When advertising, the device will connect quicker if the advertising interval is short. The time it takes to connect also depends on how frequently the central device scans. If the central device scans continuously, connection establishment will be faster. You can read more about his in the current consumption guide, section "Tuning advertising parameters"

Update 11.9.2015 To further realize how to improve throughput, these threads could be helpful: (1) (2) (3)