Increasing throughput for nrf52832

[Haresh05]

We are using nrf52832 with S132.

In our application, we have 1 device as central and it will connect to 4 peripheral devices.

Central device needs to send 128 bytes of data to each of 4 device at interval of 30 msec.

We have extended the data length to send 128 bytes in 1 packet.

Currently we are sending these packets at interval of 100 msec and still packets are getting dropped.

Connection interval is set to 7.5msec.

So how can we increase throughput to achieve our requirements?

[Simonr]

Hi

Please check out this blog post from Novel Bits where they explain in detail how to maximize throughput on BLE applications. They're using nRF52840 DKs to do the tests conducted in the blog post, so the setup on your end should be similar as well. Please make sure the devices communicate on the 2MBPS PHY for example.

Also, are you testing on custom boards or on nRF52832 DKs?

Best regards,

Simon

[Haresh05]

Hi Simnor,

Please provide the link to the blog post you are suggesting

[Simonr]

Very sorry, updated my last reply with the link: https://novelbits.io/bluetooth-5-speed-maximum-throughput/

[Haresh05]

I have checked the blog you provided. I was using the write with response. I changed it to write without response and the results are better now. Not exactly what we require but good for now.

After changing the connection and scan parameters, I have observed that the central device takes too long to establish a connection with peripheral devices as it immediately disconnects with reason:0x3e too often.