QLowEnergyConnectionParameters

The QLowEnergyConnectionParameters class is used when requesting or reporting an update of the parameters of a Bluetooth LE connection. More…

Synopsis

Functions

• def __eq__ (b)

• def __ne__ (b)

• def latency ()

• def maximumInterval ()

• def minimumInterval ()

• def setIntervalRange (minimum, maximum)

• def setLatency (latency)

• def setSupervisionTimeout (timeout)

• def supervisionTimeout ()

• def swap (other)

Detailed Description

The connection parameters influence how often a master and a slave device synchronize with each other. In general, a lower connection interval and latency means faster communication, but also higher power consumption. How these criteria should be weighed against each other is highly dependent on the concrete use case.

Android only indirectly permits the adjustment of this parameter set. The platform separates the connection parameters into three categories (hight, low & balanced priority). Each category implies a predefined set of values for minimumInterval() , maximumInterval() and latency() . Additionally, the value ranges of each category can vary from one Android device to the next. Qt uses the minimumInterval() to determine the target category as follows:

minimumInterval()	Android priority
interval < 30	CONNECTION_PRIORITY_HIGH
30 <= interval <= 100	CONNECTION_PRIORITY_BALANCED
interval > 100	CONNECTION_PRIORITY_LOW_POWER

The supervisionTimeout() cannot be changed on Android and is therefore ignored.

See also

requestConnectionUpdate connectionUpdated

class PySide6.QtBluetooth.QLowEnergyConnectionParameters

PySide6.QtBluetooth.QLowEnergyConnectionParameters(other)

Parameters

other – PySide6.QtBluetooth.QLowEnergyConnectionParameters

Constructs a new object of this class. All values are initialized to valid defaults.

Constructs a new object of this class that is a copy of other.

PySide6.QtBluetooth.QLowEnergyConnectionParameters.latency()

Return type

int

Returns the slave latency of the connection.

See also

setLatency()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.maximumInterval()

Return type

double

Returns the maximum connection interval in milliseconds. The default is 4000.

Note

If this object was emitted via connectionUpdated() , then this value is the same as minimumInterval() and refers to the actual connection interval.

See also

setIntervalRange()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.minimumInterval()

Return type

double

Returns the minimum connection interval in milliseconds. The default is 7.5.

Note

If this object was emitted via connectionUpdated() , then this value is the same as maximumInterval() and refers to the actual connection interval.

See also

setIntervalRange()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.__ne__(b)

Parameters

b – PySide6.QtBluetooth.QLowEnergyConnectionParameters

Return type

bool

PySide6.QtBluetooth.QLowEnergyConnectionParameters.__eq__(b)

Parameters

b – PySide6.QtBluetooth.QLowEnergyConnectionParameters

Return type

bool

PySide6.QtBluetooth.QLowEnergyConnectionParameters.setIntervalRange(minimum, maximum)

Parameters

• minimum – double

• maximum – double

Sets the range in which the connection interval should be. The actual value will be decided by the controller. Both minimum and maximum are given in milliseconds. If maximum is smaller than minimum, it will be set to the value of minimum. The smallest possible connection interval is 7.5 milliseconds, the largest one is 4000 milliseconds.

See also

minimumInterval() maximumInterval()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.setLatency(latency)

Parameters

latency – int

Sets the slave latency of the connection (that is, the number of connection events that a slave device is allowed to ignore) to latency. The minimum value is 0, the maximum is 499.

See also

latency()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.setSupervisionTimeout(timeout)

Parameters

timeout – int

Sets the link supervision timeout to timeout milliseconds. There are several constraints on this value: It must be in the range [100,32000] and it must be larger than (1 + latency() ) * 2 * maximumInterval() .

On Android, this timeout is not adjustable and therefore ignored.

See also

supervisionTimeout()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.supervisionTimeout()

Return type

int

Returns the link supervision timeout of the connection in milliseconds.

See also

setSupervisionTimeout()

PySide6.QtBluetooth.QLowEnergyConnectionParameters.swap(other)

Parameters

other – PySide6.QtBluetooth.QLowEnergyConnectionParameters

Swaps this object with other.