Please tell us about BLE performance you can implement.

[yokokawa]

Is it possible to connect four peripherals to one central and send 300 bytes of data to the central from each peripheral every 100 msec?
If so, which sample program should I refer?
Thanking you in advance.

[Martin Lesund]

Hi Yokokawa,

  Yes, that should not be a problem.

Here is a example you can use for reference the Central (BLE multi-link example) 

I would also recommend you to look into the ATT_MTU example which you can test out to see how you can configure the throughput based on  the different configurations.

[yokokawa]

Because of lack of explanation, I will check again.
It becomes the function as below, but is it okay?
1) Four peripheral devices send 300 bytes of data to the central every 100 milliseconds.
2) Central receives data of 300 bytes totaling 1200 bytes every 100 msec from four peripheral devices.
Thanking you in advance.

[Martin Lesund]

Hi Yokokawa,

  Okey, let us do the math.

1200 bytes every 100ms, -> 12 000bytes/s. (or 96 000bits/s --> 96kbps)

And you can achieve a throughput of ~1,400 kbps with the nRF52832 and S132 v5.0.0 if you run the nRF52 in 2 Mbps data rate mode.

Even with regular 1 Mbps data rate mode you would achieve around 700 kbps.

So it should not be a problem for you to achieve this. (similar thread)

• Documentation: Bluetooth low energy data throughput

[yokokawa]

Is it not a calculated design value, is it no problem with the effective value when actually used?
For BLE 4.2, there is also information that the effective value is 10 kbps.
Thanking you in advance.

[Martin Lesund]

Hi Yokokawa,

yokokawa said:

there is also information that the effective value is 10 kbps.

 Where did you get that information from?

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Also, I am not sure I understand your question.

Please be more specific and/or detailed in your question.