dual_relay_bricklet

Documentation

Overview

Two relays to switch AC/DC devices.

See also the documentation here: https://www.tinkerforge.com/en/doc/Software/Bricklets/DualRelay_Bricklet_Go.html.

Index

• Constants
• type DualRelayBricklet
  • func New(uid string, ipcon *ipconnection.IPConnection) (DualRelayBricklet, error)
  • func (device *DualRelayBricklet) DeregisterMonoflopDoneCallback(registrationId uint64)
  • func (device *DualRelayBricklet) GetAPIVersion() [3]uint8
  • func (device *DualRelayBricklet) GetIdentity() (uid string, connectedUid string, position rune, hardwareVersion [3]uint8, ...)
  • func (device *DualRelayBricklet) GetMonoflop(relay uint8) (state bool, time uint32, timeRemaining uint32, err error)
  • func (device *DualRelayBricklet) GetResponseExpected(functionID Function) (bool, error)
  • func (device *DualRelayBricklet) GetState() (relay1 bool, relay2 bool, err error)
  • func (device *DualRelayBricklet) RegisterMonoflopDoneCallback(fn func(uint8, bool)) uint64
  • func (device *DualRelayBricklet) SetMonoflop(relay uint8, state bool, time uint32) (err error)
  • func (device *DualRelayBricklet) SetResponseExpected(functionID Function, responseExpected bool) error
  • func (device *DualRelayBricklet) SetResponseExpectedAll(responseExpected bool)
  • func (device *DualRelayBricklet) SetSelectedState(relay uint8, state bool) (err error)
  • func (device *DualRelayBricklet) SetState(relay1 bool, relay2 bool) (err error)
• type Function

Constants

const DeviceDisplayName = "Dual Relay Bricklet"

const DeviceIdentifier = 26

Types

type DualRelayBricklet

type DualRelayBricklet struct {
	// contains filtered or unexported fields
}

func New

func New(uid string, ipcon *ipconnection.IPConnection) (DualRelayBricklet, error)

Creates an object with the unique device ID `uid`. This object can then be used after the IP Connection `ipcon` is connected.

func (*DualRelayBricklet) DeregisterMonoflopDoneCallback

func (device *DualRelayBricklet) DeregisterMonoflopDoneCallback(registrationId uint64)

Remove a registered Monoflop Done callback.

func (*DualRelayBricklet) GetAPIVersion

func (device *DualRelayBricklet) GetAPIVersion() [3]uint8

Returns the version of the API definition (major, minor, revision) implemented by this API bindings. This is neither the release version of this API bindings nor does it tell you anything about the represented Brick or Bricklet.

func (*DualRelayBricklet) GetIdentity

func (device *DualRelayBricklet) GetIdentity() (uid string, connectedUid string, position rune, hardwareVersion [3]uint8, firmwareVersion [3]uint8, deviceIdentifier uint16, err error)

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). A Bricklet connected to an `Isolator Bricklet <isolator_bricklet>` is always at position 'z'.

The device identifier numbers can be found `here <device_identifier>`. |device_identifier_constant|

func (*DualRelayBricklet) GetMonoflop

func (device *DualRelayBricklet) GetMonoflop(relay uint8) (state bool, time uint32, timeRemaining uint32, err error)

Returns (for the given relay) the current state and the time as set by SetMonoflop as well as the remaining time until the state flips.

If the timer is not running currently, the remaining time will be returned as 0.

func (*DualRelayBricklet) GetResponseExpected

func (device *DualRelayBricklet) GetResponseExpected(functionID Function) (bool, error)

Returns the response expected flag for the function specified by the function ID parameter. It is true if the function is expected to send a response, false otherwise.

For getter functions this is enabled by default and cannot be disabled, because those functions will always send a response. For callback configuration functions it is enabled by default too, but can be disabled by SetResponseExpected. For setter functions it is disabled by default and can be enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

See SetResponseExpected for the list of function ID constants available for this function.

func (*DualRelayBricklet) GetState

func (device *DualRelayBricklet) GetState() (relay1 bool, relay2 bool, err error)

Returns the state of the relays, *true* means on and *false* means off.

func (*DualRelayBricklet) RegisterMonoflopDoneCallback

func (device *DualRelayBricklet) RegisterMonoflopDoneCallback(fn func(uint8, bool)) uint64

This callback is triggered whenever a monoflop timer reaches 0. The parameter contain the relay (1 or 2) and the current state of the relay (the state after the monoflop).

func (*DualRelayBricklet) SetMonoflop

func (device *DualRelayBricklet) SetMonoflop(relay uint8, state bool, time uint32) (err error)

The first parameter can be 1 or 2 (relay 1 or relay 2). The second parameter is the desired state of the relay (*true* means on and *false* means off). The third parameter indicates the time that the relay should hold the state.

If this function is called with the parameters (1, true, 1500): Relay 1 will turn on and in 1.5s it will turn off again.

A monoflop can be used as a failsafe mechanism. For example: Lets assume you have a RS485 bus and a Dual Relay Bricklet connected to one of the slave stacks. You can now call this function every second, with a time parameter of two seconds. The relay will be on all the time. If now the RS485 connection is lost, the relay will turn off in at most two seconds.

func (*DualRelayBricklet) SetResponseExpected

func (device *DualRelayBricklet) SetResponseExpected(functionID Function, responseExpected bool) error

Changes the response expected flag of the function specified by the function ID parameter. This flag can only be changed for setter (default value: false) and callback configuration functions (default value: true). For getter functions it is always enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

func (*DualRelayBricklet) SetResponseExpectedAll

func (device *DualRelayBricklet) SetResponseExpectedAll(responseExpected bool)

Changes the response expected flag for all setter and callback configuration functions of this device at once.

func (*DualRelayBricklet) SetSelectedState

func (device *DualRelayBricklet) SetSelectedState(relay uint8, state bool) (err error)

Sets the state of the selected relay (1 or 2), *true* means on and *false* means off.

A running monoflop timer for the selected relay will be aborted if this function is called.

The other relay remains untouched.

func (*DualRelayBricklet) SetState

func (device *DualRelayBricklet) SetState(relay1 bool, relay2 bool) (err error)

Sets the state of the relays, *true* means on and *false* means off. For example: (true, false) turns relay 1 on and relay 2 off.

If you just want to set one of the relays and don't know the current state of the other relay, you can get the state with GetState or you can use SetSelectedState.

All running monoflop timers will be aborted if this function is called.

type Function

type Function = uint8

const (
	FunctionSetState             Function = 1
	FunctionGetState             Function = 2
	FunctionSetMonoflop          Function = 3
	FunctionGetMonoflop          Function = 4
	FunctionSetSelectedState     Function = 6
	FunctionGetIdentity          Function = 255
	FunctionCallbackMonoflopDone Function = 5
)