This is the description of the C# API bindings for the Voltage/Current Bricklet. General information and technical specifications for the Voltage/Current Bricklet are summarized in its hardware description.
An installation guide for the C# 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 | using System;
using Tinkerforge;
class Example
{
private static string HOST = "localhost";
private static int PORT = 4223;
private static string UID = "XYZ"; // Change XYZ to the UID of your Voltage/Current Bricklet
static void Main()
{
IPConnection ipcon = new IPConnection(); // Create IP connection
BrickletVoltageCurrent vc = new BrickletVoltageCurrent(UID, ipcon); // Create device object
ipcon.Connect(HOST, PORT); // Connect to brickd
// Don't use device before ipcon is connected
// Get current voltage
int voltage = vc.GetVoltage();
Console.WriteLine("Voltage: " + voltage/1000.0 + " V");
// Get current current
int current = vc.GetCurrent();
Console.WriteLine("Current: " + current/1000.0 + " A");
Console.WriteLine("Press enter to exit");
Console.ReadLine();
ipcon.Disconnect();
}
}
|
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 | using System;
using Tinkerforge;
class Example
{
private static string HOST = "localhost";
private static int PORT = 4223;
private static string UID = "XYZ"; // Change XYZ to the UID of your Voltage/Current Bricklet
// Callback function for current callback
static void CurrentCB(BrickletVoltageCurrent sender, int current)
{
Console.WriteLine("Current: " + current/1000.0 + " A");
}
static void Main()
{
IPConnection ipcon = new IPConnection(); // Create IP connection
BrickletVoltageCurrent vc = new BrickletVoltageCurrent(UID, ipcon); // Create device object
ipcon.Connect(HOST, PORT); // Connect to brickd
// Don't use device before ipcon is connected
// Register current callback to function CurrentCB
vc.CurrentCallback += CurrentCB;
// Set period for current callback to 1s (1000ms)
// Note: The current callback is only called every second
// if the current has changed since the last call!
vc.SetCurrentCallbackPeriod(1000);
Console.WriteLine("Press enter to exit");
Console.ReadLine();
ipcon.Disconnect();
}
}
|
Download (ExampleThreshold.cs)
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 | using System;
using Tinkerforge;
class Example
{
private static string HOST = "localhost";
private static int PORT = 4223;
private static string UID = "XYZ"; // Change XYZ to the UID of your Voltage/Current Bricklet
// Callback function for power reached callback
static void PowerReachedCB(BrickletVoltageCurrent sender, int power)
{
Console.WriteLine("Power: " + power/1000.0 + " W");
}
static void Main()
{
IPConnection ipcon = new IPConnection(); // Create IP connection
BrickletVoltageCurrent vc = new BrickletVoltageCurrent(UID, ipcon); // Create device object
ipcon.Connect(HOST, PORT); // Connect to brickd
// Don't use device before ipcon is connected
// Get threshold callbacks with a debounce time of 10 seconds (10000ms)
vc.SetDebouncePeriod(10000);
// Register power reached callback to function PowerReachedCB
vc.PowerReachedCallback += PowerReachedCB;
// Configure threshold for power "greater than 10 W"
vc.SetPowerCallbackThreshold('>', 10*1000, 0);
Console.WriteLine("Press enter to exit");
Console.ReadLine();
ipcon.Disconnect();
}
}
|
Generally, every method of the C# bindings that returns a value can
throw a Tinkerforge.TimeoutException
. This exception gets thrown if the
device did not respond. If a cable based connection is used, it is
unlikely that this exception gets thrown (assuming nobody plugs the
device out). However, if a wireless connection is used, timeouts will occur
if the distance to the device gets too big.
Since C# does not support multiple return values directly, we use the out
keyword to return multiple values from a method.
The namespace for all Brick/Bricklet bindings and the IPConnection is
Tinkerforge.*
.
All methods listed below are thread-safe.
BrickletVoltageCurrent
(string uid, IPConnection ipcon)¶Parameters: |
|
---|---|
Returns: |
|
Creates an object with the unique device ID uid
:
BrickletVoltageCurrent voltageCurrent = new BrickletVoltageCurrent("YOUR_DEVICE_UID", ipcon);
This object can then be used after the IP Connection is connected.
BrickletVoltageCurrent.
GetCurrent
()¶Returns: |
|
---|
Returns the current.
If you want to get the current periodically, it is recommended to use the
CurrentCallback
callback and set the period with
SetCurrentCallbackPeriod()
.
BrickletVoltageCurrent.
GetVoltage
()¶Returns: |
|
---|
Returns the voltage.
If you want to get the voltage periodically, it is recommended to use the
VoltageCallback
callback and set the period with
SetVoltageCallbackPeriod()
.
BrickletVoltageCurrent.
GetPower
()¶Returns: |
|
---|
Returns the power.
If you want to get the power periodically, it is recommended to use the
PowerCallback
callback and set the period with
SetPowerCallbackPeriod()
.
BrickletVoltageCurrent.
SetConfiguration
(byte averaging, byte voltageConversionTime, byte currentConversionTime)¶Parameters: |
|
---|
Sets the configuration of the Voltage/Current Bricklet. It is possible to configure number of averages as well as voltage and current conversion time.
The following constants are available for this function:
For averaging:
For voltageConversionTime:
For currentConversionTime:
BrickletVoltageCurrent.
GetConfiguration
(out byte averaging, out byte voltageConversionTime, out byte currentConversionTime)¶Output Parameters: |
|
---|
Returns the configuration as set by SetConfiguration()
.
The following constants are available for this function:
For averaging:
For voltageConversionTime:
For currentConversionTime:
BrickletVoltageCurrent.
SetCalibration
(int gainMultiplier, int gainDivisor)¶Parameters: |
|
---|
Since the shunt resistor that is used to measure the current is not perfectly precise, it needs to be calibrated by a multiplier and divisor if a very precise reading is needed.
For example, if you are expecting a measurement of 1000mA and you are measuring 1023mA, you can calibrate the Voltage/Current Bricklet by setting the multiplier to 1000 and the divisor to 1023.
BrickletVoltageCurrent.
GetCalibration
(out int gainMultiplier, out int gainDivisor)¶Output Parameters: |
|
---|
Returns the calibration as set by SetCalibration()
.
BrickletVoltageCurrent.
GetIdentity
(out string uid, out string connectedUid, out char position, out byte[] hardwareVersion, out byte[] firmwareVersion, out int deviceIdentifier)¶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.
BrickletVoltageCurrent.
SetCurrentCallbackPeriod
(long period)¶Parameters: |
|
---|
Sets the period with which the CurrentCallback
callback is triggered
periodically. A value of 0 turns the callback off.
The CurrentCallback
callback is only triggered if the current has changed since
the last triggering.
BrickletVoltageCurrent.
GetCurrentCallbackPeriod
()¶Returns: |
|
---|
Returns the period as set by SetCurrentCallbackPeriod()
.
BrickletVoltageCurrent.
SetVoltageCallbackPeriod
(long period)¶Parameters: |
|
---|
Sets the period with which the VoltageCallback
callback is triggered
periodically. A value of 0 turns the callback off.
The VoltageCallback
callback is only triggered if the voltage has changed since
the last triggering.
BrickletVoltageCurrent.
GetVoltageCallbackPeriod
()¶Returns: |
|
---|
Returns the period as set by SetVoltageCallbackPeriod()
.
BrickletVoltageCurrent.
SetPowerCallbackPeriod
(long period)¶Parameters: |
|
---|
Sets the period with which the PowerCallback
callback is triggered
periodically. A value of 0 turns the callback off.
The PowerCallback
callback is only triggered if the power has changed since the
last triggering.
BrickletVoltageCurrent.
GetPowerCallbackPeriod
()¶Returns: |
|
---|
Returns the period as set by GetPowerCallbackPeriod()
.
BrickletVoltageCurrent.
SetCurrentCallbackThreshold
(char option, int min, int max)¶Parameters: |
|
---|
Sets the thresholds for the CurrentReachedCallback
callback.
The following options are possible:
Option | Description |
---|---|
'x' | Callback is turned off |
'o' | Callback is triggered when the current is outside the min and max values |
'i' | Callback is triggered when the current is inside the min and max values |
'<' | Callback is triggered when the current is smaller than the min value (max is ignored) |
'>' | Callback is triggered when the current is greater than the min value (max is ignored) |
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
GetCurrentCallbackThreshold
(out char option, out int min, out int max)¶Output Parameters: |
|
---|
Returns the threshold as set by SetCurrentCallbackThreshold()
.
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
SetVoltageCallbackThreshold
(char option, int min, int max)¶Parameters: |
|
---|
Sets the thresholds for the VoltageReachedCallback
callback.
The following options are possible:
Option | Description |
---|---|
'x' | Callback is turned off |
'o' | Callback is triggered when the voltage is outside the min and max values |
'i' | Callback is triggered when the voltage is inside the min and max values |
'<' | Callback is triggered when the voltage is smaller than the min value (max is ignored) |
'>' | Callback is triggered when the voltage is greater than the min value (max is ignored) |
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
GetVoltageCallbackThreshold
(out char option, out int min, out int max)¶Output Parameters: |
|
---|
Returns the threshold as set by SetVoltageCallbackThreshold()
.
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
SetPowerCallbackThreshold
(char option, int min, int max)¶Parameters: |
|
---|
Sets the thresholds for the PowerReachedCallback
callback.
The following options are possible:
Option | Description |
---|---|
'x' | Callback is turned off |
'o' | Callback is triggered when the power is outside the min and max values |
'i' | Callback is triggered when the power is inside the min and max values |
'<' | Callback is triggered when the power is smaller than the min value (max is ignored) |
'>' | Callback is triggered when the power is greater than the min value (max is ignored) |
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
GetPowerCallbackThreshold
(out char option, out int min, out int max)¶Output Parameters: |
|
---|
Returns the threshold as set by SetPowerCallbackThreshold()
.
The following constants are available for this function:
For option:
BrickletVoltageCurrent.
SetDebouncePeriod
(long debounce)¶Parameters: |
|
---|
Sets the period with which the threshold callbacks
are triggered, if the thresholds
keep being reached.
BrickletVoltageCurrent.
GetDebouncePeriod
()¶Returns: |
|
---|
Returns the debounce period as set by SetDebouncePeriod()
.
Callbacks can be registered to receive time critical or recurring data from the device. The registration is done by appending your callback handler to the corresponding event:
void MyCallback(BrickletVoltageCurrent sender, int value)
{
System.Console.WriteLine("Value: " + value);
}
voltageCurrent.ExampleCallback += MyCallback;
The available events 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.
BrickletVoltageCurrent.
CurrentCallback
(BrickletVoltageCurrent sender, int current)¶Callback Parameters: |
|
---|
This callback is triggered periodically with the period that is set by
SetCurrentCallbackPeriod()
. The parameter is the current of the
sensor.
The CurrentCallback
callback is only triggered if the current has changed since
the last triggering.
BrickletVoltageCurrent.
VoltageCallback
(BrickletVoltageCurrent sender, int voltage)¶Callback Parameters: |
|
---|
This callback is triggered periodically with the period that is set by
SetVoltageCallbackPeriod()
. The parameter is the voltage of
the sensor.
The VoltageCallback
callback is only triggered if the voltage has changed since
the last triggering.
BrickletVoltageCurrent.
PowerCallback
(BrickletVoltageCurrent sender, int power)¶Callback Parameters: |
|
---|
This callback is triggered periodically with the period that is set by
SetPowerCallbackPeriod()
. The parameter is the power of the
sensor.
The PowerCallback
callback is only triggered if the power has changed since the
last triggering.
BrickletVoltageCurrent.
CurrentReachedCallback
(BrickletVoltageCurrent sender, int current)¶Callback Parameters: |
|
---|
This callback is triggered when the threshold as set by
SetCurrentCallbackThreshold()
is reached.
The parameter is the current of the sensor.
If the threshold keeps being reached, the callback is triggered periodically
with the period as set by SetDebouncePeriod()
.
BrickletVoltageCurrent.
VoltageReachedCallback
(BrickletVoltageCurrent sender, int voltage)¶Callback Parameters: |
|
---|
This callback is triggered when the threshold as set by
SetVoltageCallbackThreshold()
is reached.
The parameter is the voltage of the sensor.
If the threshold keeps being reached, the callback is triggered periodically
with the period as set by SetDebouncePeriod()
.
BrickletVoltageCurrent.
PowerReachedCallback
(BrickletVoltageCurrent sender, int power)¶Callback Parameters: |
|
---|
This callback is triggered when the threshold as set by
SetPowerCallbackThreshold()
is reached.
The parameter is the power of the sensor.
If the threshold keeps being reached, the callback is triggered periodically
with the period as set by SetDebouncePeriod()
.
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.
BrickletVoltageCurrent.
GetAPIVersion
()¶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.
BrickletVoltageCurrent.
GetResponseExpected
(byte functionId)¶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:
BrickletVoltageCurrent.
SetResponseExpected
(byte functionId, bool responseExpected)¶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:
BrickletVoltageCurrent.
SetResponseExpectedAll
(bool responseExpected)¶Parameters: |
|
---|
Changes the response expected flag for all setter and callback configuration functions of this device at once.
BrickletVoltageCurrent.
DEVICE_IDENTIFIER
¶This constant is used to identify a Voltage/Current Bricklet.
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.
BrickletVoltageCurrent.
DEVICE_DISPLAY_NAME
¶This constant represents the human readable name of a Voltage/Current Bricklet.