Bleuio Firmware Update V2.0.6

August 13, 2021
Bleuio Firmware Update V2.0.6

A new firmware update v 2.0.6 has been released for BleuIO and Smart USB Dongle 2.0. You can download the updated firmware from

Added features:

  • Added a new command AT+CLEARNOTI that will clear notification for the selected handle. For example AT+CLEARNOTI=0012
  • Updated command for AT+GAPCONNECT. Now you can set Connection interval,Slave latency,Connection supervision timeout while connecting to a peripheral. 

Understand BLE connection parameters

For a BLE connection, The connection parameters determine when and how the Central and a Peripheral in a link transmits data. The Central always sets the connection parameters; however, the Peripheral can send a Connection Parameter Update Request that the Central can accept or reject.

There are basically three different parameters:

Connection interval: Defines how often the Central will ask for data from the Peripheral. It contains minimum and maximum connection interval values. 

The parameter value has to be chosen with a balance of throughput and power consumption in mind. A high connection interval value (e.g. 4 seconds) will decrease power consumption and reduce data throughput, and vice versa.

Therefore, if you want to increase the data throughput, you can decrease the connection interval value, but keep in mind that this will also increase power consumption.

Slave latency: slave latency can be applied to help the peripheral (slave) device reduce power consumption further. This parameter is useful to avoid changing connection parameters frequently to achieve both high-speed data transfer and low power consumption when idle.

For example, suppose there is a 30 ms connection interval with a slave latency of 4. In that case, the connection can handle data transfers with 30 ms connection intervals, and when idle, it sends empty packets to keep the connection only once every 150 ms (on the slave side).

Connection supervision timeout: This timeout is determined from the last data exchange until a link is considered lost. A Central will not start trying to reconnect before the timeout has passed, so if you have a device that goes in and out of range often, and you need to notice when that happens, it might make sense to have a short timeout.

To meet the demands of users, the BleuIO team will continue to update and add new features. To find out more about the updates of the dongles new firmware 2.0.6, please visit our Getting Started Guide

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