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UM2071

BlueNRG-1 throughput demonstration

application

DocID029370 Rev 3

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BlueNRG-1 throughput demonstration application

The BlueNRG-1 throughput demonstration application provides some basic throughput

demonstration applications to provide some reference figures regarding the achievable

Bluetooth low energy data rate using the BlueNRG-1 device.

The throughput application scenarios provided are:

Unidirectional scenario: the server device sends characteristic notifications to a client

device.

Bidirectional scenario: the server device sends characteristic notifications to a client

device and client device sends write without response characteristics to the server

device.

The throughput application exposes one service with two (20 byte max.) characteristic

values:



The TX characteristic, with which the client can enable notifications; when the server

has data to be sent, it sends notifications with the value of the TX characteristic.



The RX characteristic, is a writable characteristic; when the client has data to be sent

to the server, it writes a value in this characteristic.

The device roles which can be selected are:

Server, which exposes the service with the TX, RX characteristics (BLE peripheral

device)

Client, which uses the service TX, RX characteristics (BLE central device).

Each device role has two instances for each throughput scenario (unidirectional,

bidirectional).

The BlueNRG-1 HID/HOGP demonstration applications are supported by the BlueNRG-1

development platform (STEVAL-IDB007V1).

13.1

BLE unidirectional throughput scenario

The unidirectional throughput scenario lets you perform a unidirectional throughput test

where a server device sends notification to a client device.

To run this scenario:



Program the client unidirectional application on one BlueNRG-1 platform and reset it.

The platform is seen on the PC as a virtual COM port.



Open the port in a serial terminal emulator (the required serial port baudrate is

921600)



Program the server unidirectional application on a second BlueNRG-1 platform and

reset it.



The two platforms try to establish a connection; if successful, the slave continuously

sends notifications of TX characteristic (20 bytes) to the client.



After every 500 packets, the measured application unidirectional throughput is

displayed.

13.2

BLE bidirectional throughput scenario

The bidirectional throughput scenario lets you perform a bidirectional throughput test where

the server device sends notifications to a client device and client device sends write without

response characteristics to the server device.

To run this scenario:

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