Maximize data transfer rate

[jswcomkr]

Hi. I'm developing solution for vehicle driving data gathering system.

Our customer want to get the driving data for 1000/s.

So, I was developed hardware and software, but I get only 420~440 data per seconds.

My connectino parameter is as follow:

conn_params.min_conn_interval = 8;	
conn_params.max_conn_interval = 16;	
conn_params.slave_latency     = 0;	
conn_params.conn_sup_timeout = 500;	

PHY is AUTO.

How can I maximize data transfer rate?

[jswcomkr]

Hi. thank you for reply. I tested it using two nRF52 device that is self-designed circuit and unit is counts per seconds.

(calculate using RTC2 compare interrupt every 1 seconds)

As I know, nRF52832 can actually transmit over 1Mbps as you said so It is almost 125000Bytes/s.

This system adopted hand-shaking method. 

How can I get the data more fast?

[Eugene Yu]

Hi.

It is not possible to reach 125kB/s with 1Mbps.

Here is another throughput result that was tested with the S132 stack.

As you can see, the maximum result with 1Mbps/DLE/400ms CI is 771kbps.

That means it is possible to send 96kB(771kb/8) per second.

If you are implemented in your own bi-directional communication, it will be slower than this result.

I would suggest you try the configuration stated in the link and also try with 2Mbps and DLE if you are not using the DLE.