This is the description of the Visual Basic .NET API bindings for the IO-16 Bricklet 2.0. General information and technical specifications for the IO-16 Bricklet 2.0 are summarized in its hardware description.
An installation guide for the Visual Basic .NET API bindings is part of their general description.
The example code below is Public Domain (CC0 1.0).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | Imports System
Imports System.Threading
Imports Tinkerforge
Module ExampleOutput
Const HOST As String = "localhost"
Const PORT As Integer = 4223
Const UID As String = "XYZ" ' Change XYZ to the UID of your IO-16 Bricklet 2.0
Sub Main()
Dim ipcon As New IPConnection() ' Create IP connection
Dim io As New BrickletIO16V2(UID, ipcon) ' Create device object
ipcon.Connect(HOST, PORT) ' Connect to brickd
' Don't use device before ipcon is connected
' Configure channel 7 [A7] as output low
io.SetConfiguration(7, "o"C, False)
' Set channel 7 [A7] alternating high/low 10 times with 100 ms delay
Dim i As Integer
For i = 0 To 9
Thread.Sleep(100)
io.SetSelectedValue(7, True)
Thread.Sleep(100)
io.SetSelectedValue(7, False)
Next i
Console.WriteLine("Press key to exit")
Console.ReadLine()
ipcon.Disconnect()
End Sub
End Module
|
Download (ExampleInterrupt.vb)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | Imports System
Imports Tinkerforge
Module ExampleInterrupt
Const HOST As String = "localhost"
Const PORT As Integer = 4223
Const UID As String = "XYZ" ' Change XYZ to the UID of your IO-16 Bricklet 2.0
' Callback subroutine for input value callback
Sub InputValueCB(ByVal sender As BrickletIO16V2, ByVal channel As Byte, _
ByVal changed As Boolean, ByVal value As Boolean)
Console.WriteLine("Channel: " + channel.ToString())
Console.WriteLine("Changed: " + changed.ToString())
Console.WriteLine("Value: " + value.ToString())
Console.WriteLine("")
End Sub
Sub Main()
Dim ipcon As New IPConnection() ' Create IP connection
Dim io As New BrickletIO16V2(UID, ipcon) ' Create device object
ipcon.Connect(HOST, PORT) ' Connect to brickd
' Don't use device before ipcon is connected
' Register input value callback to subroutine InputValueCB
AddHandler io.InputValueCallback, AddressOf InputValueCB
' Set period for input value (channel 4 [A4]) callback to 0.5s (500ms)
io.SetInputValueCallbackConfiguration(4, 500, False)
Console.WriteLine("Press key to exit")
Console.ReadLine()
ipcon.Disconnect()
End Sub
End Module
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | Imports System
Imports Tinkerforge
Module ExampleInput
Const HOST As String = "localhost"
Const PORT As Integer = 4223
Const UID As String = "XYZ" ' Change XYZ to the UID of your IO-16 Bricklet 2.0
Sub Main()
Dim ipcon As New IPConnection() ' Create IP connection
Dim io As New BrickletIO16V2(UID, ipcon) ' Create device object
ipcon.Connect(HOST, PORT) ' Connect to brickd
' Don't use device before ipcon is connected
' Get current value
Dim value As Boolean() = io.GetValue()
Console.WriteLine("Channel 0 [A0]: " + value(0).ToString())
Console.WriteLine("Channel 1 [A1]: " + value(1).ToString())
Console.WriteLine("Channel 2 [A2]: " + value(2).ToString())
Console.WriteLine("Channel 3 [A3]: " + value(3).ToString())
Console.WriteLine("Channel 4 [A4]: " + value(4).ToString())
Console.WriteLine("Channel 5 [A5]: " + value(5).ToString())
Console.WriteLine("Channel 6 [A6]: " + value(6).ToString())
Console.WriteLine("Channel 7 [A7]: " + value(7).ToString())
Console.WriteLine("Channel 8 [B0]: " + value(8).ToString())
Console.WriteLine("Channel 9 [B1]: " + value(9).ToString())
Console.WriteLine("Channel 10 [B2]: " + value(10).ToString())
Console.WriteLine("Channel 11 [B3]: " + value(11).ToString())
Console.WriteLine("Channel 12 [B4]: " + value(12).ToString())
Console.WriteLine("Channel 13 [B5]: " + value(13).ToString())
Console.WriteLine("Channel 14 [B6]: " + value(14).ToString())
Console.WriteLine("Channel 15 [B7]: " + value(15).ToString())
Console.WriteLine("Press key to exit")
Console.ReadLine()
ipcon.Disconnect()
End Sub
End Module
|
Since Visual Basic .NET does not support multiple return values directly, we
use the ByRef
keyword to return multiple values from a function.
All functions and procedures listed below are thread-safe.
The Bricklet has sixteen channels that are named 0 to 15 in the API. The corresponding connectors on the Bricklet are labeled A0 to A7 for channel 0 to 7 and B0 to B7 for channels 8 to 15.
BrickletIO16V2
(ByVal uid As String, ByVal ipcon As IPConnection)¶Creates an object with the unique device ID uid
:
Dim io16V2 As New BrickletIO16V2("YOUR_DEVICE_UID", ipcon)
This object can then be used after the IP Connection is connected.
BrickletIO16V2.
SetValue
(ByVal value() As Boolean)¶Parameters: |
|
---|
Sets the output value of all sixteen channels. A value of true or false outputs logic 1 or logic 0 respectively on the corresponding channel.
Use SetSelectedValue()
to change only one output channel state.
For example: (True, True, False, False, ..., False) will turn the channels 0-1 high and the channels 2-15 low.
All running monoflop timers will be aborted if this function is called.
Note
This function does nothing for channels that are configured as input. Pull-up
resistors can be switched on with SetConfiguration()
.
BrickletIO16V2.
GetValue
() As Boolean()¶Returns: |
|
---|
Returns the logic levels that are currently measured on the channels. This function works if the channel is configured as input as well as if it is configured as output.
BrickletIO16V2.
SetSelectedValue
(ByVal channel As Byte, ByVal value As Boolean)¶Parameters: |
|
---|
Sets the output value of a specific channel without affecting the other channels.
A running monoflop timer for the specific channel will be aborted if this function is called.
Note
This function does nothing for channels that are configured as input. Pull-up
resistors can be switched on with SetConfiguration()
.
BrickletIO16V2.
SetConfiguration
(ByVal channel As Byte, ByVal direction As Char, ByVal value As Boolean)¶Parameters: |
|
---|
Configures the value and direction of a specific channel. Possible directions are 'i' and 'o' for input and output.
If the direction is configured as output, the value is either high or low (set as true or false).
If the direction is configured as input, the value is either pull-up or default (set as true or false).
For example:
A running monoflop timer for the specific channel will be aborted if this function is called.
The following constants are available for this function:
For direction:
BrickletIO16V2.
GetConfiguration
(ByVal channel As Byte, ByRef direction As Char, ByRef value As Boolean)¶Parameters: |
|
---|---|
Output Parameters: |
|
Returns the channel configuration as set by SetConfiguration()
.
The following constants are available for this function:
For direction:
BrickletIO16V2.
SetMonoflop
(ByVal channel As Byte, ByVal value As Boolean, ByVal time As Long)¶Parameters: |
|
---|
Configures a monoflop of the specified channel.
The second parameter is the desired value of the specified channel. A true means relay closed and a false means relay open.
The third parameter indicates the time that the channels should hold the value.
If this function is called with the parameters (0, 1, 1500) channel 0 will close and in 1.5s channel 0 will open again
A monoflop can be used as a fail-safe mechanism. For example: Lets assume you have a RS485 bus and a IO-16 Bricklet 2.0 connected to one of the slave stacks. You can now call this function every second, with a time parameter of two seconds and channel 0 closed. Channel 0 will be closed all the time. If now the RS485 connection is lost, then channel 0 will be opened in at most two seconds.
BrickletIO16V2.
GetMonoflop
(ByVal channel As Byte, ByRef value As Boolean, ByRef time As Long, ByRef timeRemaining As Long)¶Parameters: |
|
---|---|
Output Parameters: |
|
Returns (for the given channel) the current value and the time as set by
SetMonoflop()
as well as the remaining time until the value flips.
If the timer is not running currently, the remaining time will be returned as 0.
BrickletIO16V2.
GetEdgeCount
(ByVal channel As Byte, ByVal resetCounter As Boolean) As Long¶Parameters: |
|
---|---|
Returns: |
|
Returns the current value of the edge counter for the selected channel. You can
configure the edges that are counted with SetEdgeCountConfiguration()
.
If you set the reset counter to true, the count is set back to 0 directly after it is read.
BrickletIO16V2.
SetEdgeCountConfiguration
(ByVal channel As Byte, ByVal edgeType As Byte, ByVal debounce As Byte)¶Parameters: |
|
---|
Configures the edge counter for a specific channel.
The edge type parameter configures if rising edges, falling edges or both are counted if the channel is configured for input. Possible edge types are:
Configuring an edge counter resets its value to 0.
If you don't know what any of this means, just leave it at default. The default configuration is very likely OK for you.
The following constants are available for this function:
For edgeType:
BrickletIO16V2.
GetEdgeCountConfiguration
(ByVal channel As Byte, ByRef edgeType As Byte, ByRef debounce As Byte)¶Parameters: |
|
---|---|
Output Parameters: |
|
Returns the edge type and debounce time for the selected channel as set by
SetEdgeCountConfiguration()
.
The following constants are available for this function:
For edgeType:
BrickletIO16V2.
GetSPITFPErrorCount
(ByRef errorCountAckChecksum As Long, ByRef errorCountMessageChecksum As Long, ByRef errorCountFrame As Long, ByRef errorCountOverflow As Long)¶Output Parameters: |
|
---|
Returns the error count for the communication between Brick and Bricklet.
The errors are divided into
The errors counts are for errors that occur on the Bricklet side. All Bricks have a similar function that returns the errors on the Brick side.
BrickletIO16V2.
SetStatusLEDConfig
(ByVal config As Byte)¶Parameters: |
|
---|
Sets the status LED configuration. By default the LED shows communication traffic between Brick and Bricklet, it flickers once for every 10 received data packets.
You can also turn the LED permanently on/off or show a heartbeat.
If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.
The following constants are available for this function:
For config:
BrickletIO16V2.
GetStatusLEDConfig
() As Byte¶Returns: |
|
---|
Returns the configuration as set by SetStatusLEDConfig()
The following constants are available for this function:
For config:
BrickletIO16V2.
GetChipTemperature
() As Short¶Returns: |
|
---|
Returns the temperature as measured inside the microcontroller. The value returned is not the ambient temperature!
The temperature is only proportional to the real temperature and it has bad accuracy. Practically it is only useful as an indicator for temperature changes.
BrickletIO16V2.
Reset
()¶Calling this function will reset the Bricklet. All configurations will be lost.
After a reset you have to create new device objects, calling functions on the existing ones will result in undefined behavior!
BrickletIO16V2.
GetIdentity
(ByRef uid As String, ByRef connectedUid As String, ByRef position As Char, ByRef hardwareVersion() As Byte, ByRef firmwareVersion() As Byte, ByRef deviceIdentifier As Integer)¶Output Parameters: |
|
---|
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 is always at position 'z'.
The device identifier numbers can be found here. There is also a constant for the device identifier of this Bricklet.
BrickletIO16V2.
SetInputValueCallbackConfiguration
(ByVal channel As Byte, ByVal period As Long, ByVal valueHasToChange As Boolean)¶Parameters: |
|
---|
This callback can be configured per channel.
The period is the period with which the InputValueCallback
callback is triggered periodically. A value of 0 turns the callback off.
If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.
If it is set to false, the callback is continuously triggered with the period, independent of the value.
BrickletIO16V2.
GetInputValueCallbackConfiguration
(ByVal channel As Byte, ByRef period As Long, ByRef valueHasToChange As Boolean)¶Parameters: |
|
---|---|
Output Parameters: |
|
Returns the callback configuration as set by
SetInputValueCallbackConfiguration()
.
BrickletIO16V2.
SetAllInputValueCallbackConfiguration
(ByVal period As Long, ByVal valueHasToChange As Boolean)¶Parameters: |
|
---|
The period is the period with which the AllInputValueCallback
callback is triggered periodically. A value of 0 turns the callback off.
If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.
If it is set to false, the callback is continuously triggered with the period, independent of the value.
BrickletIO16V2.
GetAllInputValueCallbackConfiguration
(ByRef period As Long, ByRef valueHasToChange As Boolean)¶Output Parameters: |
|
---|
Returns the callback configuration as set by
SetAllInputValueCallbackConfiguration()
.
Callbacks can be registered to receive time critical or recurring data from the device. The registration is done by assigning a procedure to an callback property of the device object:
Sub MyCallback(ByVal sender As BrickletIO16V2, ByVal value As Short) Console.WriteLine("Value: {0}", value) End Sub AddHandler io16V2.ExampleCallback, AddressOf MyCallback
The available callback property and their type of parameters are described below.
Note
Using callbacks for recurring events is always preferred compared to using getters. It will use less USB bandwidth and the latency will be a lot better, since there is no round trip time.
BrickletIO16V2.
InputValueCallback
(ByVal sender As BrickletIO16V2, ByVal channel As Byte, ByVal changed As Boolean, ByVal value As Boolean)¶Callback Parameters: |
|
---|
This callback is triggered periodically according to the configuration set by
SetInputValueCallbackConfiguration()
.
The parameters are the channel, a value-changed indicator and the actual value for the channel. The changed parameter is true if the value has changed since the last callback.
BrickletIO16V2.
AllInputValueCallback
(ByVal sender As BrickletIO16V2, ByVal changed() As Boolean, ByVal value() As Boolean)¶Callback Parameters: |
|
---|
This callback is triggered periodically according to the configuration set by
SetAllInputValueCallbackConfiguration()
.
The parameters are the same as GetValue()
. Additional the
changed parameter is true if the value has changed since
the last callback.
BrickletIO16V2.
MonoflopDoneCallback
(ByVal sender As BrickletIO16V2, ByVal channel As Byte, ByVal value As Boolean)¶Callback Parameters: |
|
---|
This callback is triggered whenever a monoflop timer reaches 0. The parameters contain the channel and the current value of the channel (the value after the monoflop).
Virtual functions don't communicate with the device itself, but operate only on the API bindings device object. They can be called without the corresponding IP Connection object being connected.
BrickletIO16V2.
GetAPIVersion
() As Byte()¶Output Parameters: |
|
---|
Returns the version of the API definition 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.
BrickletIO16V2.
GetResponseExpected
(ByVal functionId As Byte) As Boolean¶Parameters: |
|
---|---|
Returns: |
|
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.
The following constants are available for this function:
For functionId:
BrickletIO16V2.
SetResponseExpected
(ByVal functionId As Byte, ByVal responseExpected As Boolean)¶Parameters: |
|
---|
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.
The following constants are available for this function:
For functionId:
BrickletIO16V2.
SetResponseExpectedAll
(ByVal responseExpected As Boolean)¶Parameters: |
|
---|
Changes the response expected flag for all setter and callback configuration functions of this device at once.
Internal functions are used for maintenance tasks such as flashing a new firmware of changing the UID of a Bricklet. These task should be performed using Brick Viewer instead of using the internal functions directly.
BrickletIO16V2.
SetBootloaderMode
(ByVal mode As Byte) As Byte¶Parameters: |
|
---|---|
Returns: |
|
Sets the bootloader mode and returns the status after the requested mode change was instigated.
You can change from bootloader mode to firmware mode and vice versa. A change from bootloader mode to firmware mode will only take place if the entry function, device identifier and CRC are present and correct.
This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.
The following constants are available for this function:
For mode:
For status:
BrickletIO16V2.
GetBootloaderMode
() As Byte¶Returns: |
|
---|
Returns the current bootloader mode, see SetBootloaderMode()
.
The following constants are available for this function:
For mode:
BrickletIO16V2.
SetWriteFirmwarePointer
(ByVal pointer As Long)¶Parameters: |
|
---|
Sets the firmware pointer for WriteFirmware()
. The pointer has
to be increased by chunks of size 64. The data is written to flash
every 4 chunks (which equals to one page of size 256).
This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.
BrickletIO16V2.
WriteFirmware
(ByVal data() As Byte) As Byte¶Parameters: |
|
---|---|
Returns: |
|
Writes 64 Bytes of firmware at the position as written by
SetWriteFirmwarePointer()
before. The firmware is written
to flash every 4 chunks.
You can only write firmware in bootloader mode.
This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.
BrickletIO16V2.
WriteUID
(ByVal uid As Long)¶Parameters: |
|
---|
Writes a new UID into flash. If you want to set a new UID you have to decode the Base58 encoded UID string into an integer first.
We recommend that you use Brick Viewer to change the UID.
BrickletIO16V2.
ReadUID
() As Long¶Returns: |
|
---|
Returns the current UID as an integer. Encode as Base58 to get the usual string version.
BrickletIO16V2.
DEVICE_IDENTIFIER
¶This constant is used to identify a IO-16 Bricklet 2.0.
The GetIdentity()
function and the
IPConnection.EnumerateCallback
callback of the IP Connection have a deviceIdentifier
parameter to specify
the Brick's or Bricklet's type.
BrickletIO16V2.
DEVICE_DISPLAY_NAME
¶This constant represents the human readable name of a IO-16 Bricklet 2.0.