Software / API Bindings / Go / API Reference and Examples / Bricklets / Industrial Analog Out Bricklet 2.0

Go - Industrial Analog Out Bricklet 2.0¶

This is the description of the Go API bindings for the Industrial Analog Out Bricklet 2.0. General information and technical specifications for the Industrial Analog Out Bricklet 2.0 are summarized in its hardware description.

An installation guide for the Go API bindings is part of their general description. Additional documentation can be found on godoc.org.

Examples¶

The example code below is Public Domain (CC0 1.0).

Simple Current¶

Download (example_simple_current.go)

package main

import (
    "fmt"
    "github.com/Tinkerforge/go-api-bindings/industrial_analog_out_v2_bricklet"
    "github.com/Tinkerforge/go-api-bindings/ipconnection"
)

const ADDR string = "localhost:4223"
const UID string = "XYZ" // Change XYZ to the UID of your Industrial Analog Out Bricklet 2.0.

func main() {
    ipcon := ipconnection.New()
    defer ipcon.Close()
    iao, _ := industrial_analog_out_v2_bricklet.New(UID, &ipcon) // Create device object.

    ipcon.Connect(ADDR) // Connect to brickd.
    defer ipcon.Disconnect()
    // Don't use device before ipcon is connected.

    // Set output current to 4.5mA
    iao.SetCurrent(4500)
    iao.SetEnabled(true)

    fmt.Print("Press enter to exit.")
    fmt.Scanln()

    iao.SetEnabled(false)
}

Simple Voltage¶

Download (example_simple_voltage.go)

package main

import (
    "fmt"
    "github.com/Tinkerforge/go-api-bindings/industrial_analog_out_v2_bricklet"
    "github.com/Tinkerforge/go-api-bindings/ipconnection"
)

const ADDR string = "localhost:4223"
const UID string = "XYZ" // Change XYZ to the UID of your Industrial Analog Out Bricklet 2.0.

func main() {
    ipcon := ipconnection.New()
    defer ipcon.Close()
    iao, _ := industrial_analog_out_v2_bricklet.New(UID, &ipcon) // Create device object.

    ipcon.Connect(ADDR) // Connect to brickd.
    defer ipcon.Disconnect()
    // Don't use device before ipcon is connected.

    // Set output voltage to 3.3V
    iao.SetVoltage(3300)
    iao.SetEnabled(true)

    fmt.Print("Press enter to exit.")
    fmt.Scanln()

    iao.SetEnabled(false)
}

API¶

The Industrial Analog Out Bricklet 2.0 API is defined in the package github.com/Tinkerforge/go-api-bindings/industrial_analog_out_v2_bricklet

Nearly every function of the Go bindings can return an ipconnection.DeviceError, implementing the error interface. The error can have one of the following values:

ipconnection.DeviceErrorSuccess = 0
ipconnection.DeviceErrorInvalidParameter = 1
ipconnection.DeviceErrorFunctionNotSupported = 2
ipconnection.DeviceErrorUnknownError = 3

which correspond to the values returned from Bricks and Bricklets.

All functions listed below are thread-safe.

Basic Functions¶

func industrial_analog_out_v2_bricklet.New(uid string, ipcon *IPConnection) (device IndustrialAnalogOutV2Bricklet, err error)¶

Parameters:	uid – Type: string ipcon – Type: *IPConnection
Returns:	device – Type: IndustrialAnalogOutV2Bricklet err – Type: error

Creates a new IndustrialAnalogOutV2Bricklet object with the unique device ID uid and adds it to the IPConnection ipcon:

device, err := industrial_analog_out_v2_bricklet.New("YOUR_DEVICE_UID", &ipcon)

This device object can be used after the IPConnection has been connected.

func (*IndustrialAnalogOutV2Bricklet) SetEnabled(enabled bool) (err error)¶

Parameters:	enabled – Type: bool, Default: false
Returns:	err – Type: error

Enables/disables the output of voltage and current.

func (*IndustrialAnalogOutV2Bricklet) GetEnabled() (enabled bool, err error)¶

Returns:	enabled – Type: bool, Default: false err – Type: error

Returns true if output of voltage and current is enabled, false otherwise.

func (*IndustrialAnalogOutV2Bricklet) SetVoltage(voltage uint16) (err error)¶

Parameters:	voltage – Type: uint16, Unit: 1 mV, Range: [0 to 10000]
Returns:	err – Type: error

Sets the output voltage.

The output voltage and output current are linked. Changing the output voltage also changes the output current.

func (*IndustrialAnalogOutV2Bricklet) GetVoltage() (voltage uint16, err error)¶

Returns:	voltage – Type: uint16, Unit: 1 mV, Range: [0 to 10000] err – Type: error

Returns the voltage as set by SetVoltage().

func (*IndustrialAnalogOutV2Bricklet) SetCurrent(current uint16) (err error)¶

Parameters:	current – Type: uint16, Unit: 1 µA, Range: [0 to 24000]
Returns:	err – Type: error

Sets the output current.

The output current and output voltage are linked. Changing the output current also changes the output voltage.

func (*IndustrialAnalogOutV2Bricklet) GetCurrent() (current uint16, err error)¶

Returns:	current – Type: uint16, Unit: 1 µA, Range: [0 to 24000] err – Type: error

Returns the current as set by SetCurrent().

func (*IndustrialAnalogOutV2Bricklet) SetOutLEDConfig(config uint8) (err error)¶

Parameters:	config – Type: uint8, Range: See constants, Default: 3
Returns:	err – Type: error

You can turn the Out LED off, on or show a heartbeat. You can also set the LED to "Out Status". In this mode the LED can either be turned on with a pre-defined threshold or the intensity of the LED can change with the output value (voltage or current).

You can configure the channel status behavior with SetOutLEDStatusConfig().

The following constants are available for this function:

For config:

industrial_analog_out_v2_bricklet.OutLEDConfigOff = 0
industrial_analog_out_v2_bricklet.OutLEDConfigOn = 1
industrial_analog_out_v2_bricklet.OutLEDConfigShowHeartbeat = 2
industrial_analog_out_v2_bricklet.OutLEDConfigShowOutStatus = 3

func (*IndustrialAnalogOutV2Bricklet) GetOutLEDConfig() (config uint8, err error)¶

Returns:	config – Type: uint8, Range: See constants, Default: 3 err – Type: error

Returns the Out LED configuration as set by SetOutLEDConfig()

The following constants are available for this function:

For config:

industrial_analog_out_v2_bricklet.OutLEDConfigOff = 0
industrial_analog_out_v2_bricklet.OutLEDConfigOn = 1
industrial_analog_out_v2_bricklet.OutLEDConfigShowHeartbeat = 2
industrial_analog_out_v2_bricklet.OutLEDConfigShowOutStatus = 3

func (*IndustrialAnalogOutV2Bricklet) SetOutLEDStatusConfig(min uint16, max uint16, config uint8) (err error)¶

Parameters:	min – Type: uint16, Range: [0 to 24000], Default: 0 max – Type: uint16, Range: [0 to 24000], Default: 10000 config – Type: uint8, Range: See constants, Default: 1
Returns:	err – Type: error

Sets the Out LED status config. This config is used if the Out LED is configured as "Out Status", see SetOutLEDConfig().

For each channel you can choose between threshold and intensity mode.

In threshold mode you can define a positive or a negative threshold. For a positive threshold set the "min" parameter to the threshold value in mV or µA above which the LED should turn on and set the "max" parameter to 0. Example: If you set a positive threshold of 5V, the LED will turn on as soon as the output value exceeds 5V and turn off again if it goes below 5V. For a negative threshold set the "max" parameter to the threshold value in mV or µA below which the LED should turn on and set the "min" parameter to 0. Example: If you set a negative threshold of 5V, the LED will turn on as soon as the output value goes below 5V and the LED will turn off when the output value exceeds 5V.

In intensity mode you can define a range mV or µA that is used to scale the brightness of the LED. Example with min=2V, max=8V: The LED is off at 2V and below, on at 8V and above and the brightness is linearly scaled between the values 2V and 8V. If the min value is greater than the max value, the LED brightness is scaled the other way around.

The following constants are available for this function:

For config:

industrial_analog_out_v2_bricklet.OutLEDStatusConfigThreshold = 0
industrial_analog_out_v2_bricklet.OutLEDStatusConfigIntensity = 1

func (*IndustrialAnalogOutV2Bricklet) GetOutLEDStatusConfig() (min uint16, max uint16, config uint8, err error)¶

Returns:	min – Type: uint16, Range: [0 to 24000], Default: 0 max – Type: uint16, Range: [0 to 24000], Default: 10000 config – Type: uint8, Range: See constants, Default: 1 err – Type: error

Returns the Out LED status configuration as set by SetOutLEDStatusConfig().

The following constants are available for this function:

For config:

industrial_analog_out_v2_bricklet.OutLEDStatusConfigThreshold = 0
industrial_analog_out_v2_bricklet.OutLEDStatusConfigIntensity = 1

Advanced Functions¶

func (*IndustrialAnalogOutV2Bricklet) SetConfiguration(voltageRange uint8, currentRange uint8) (err error)¶

Parameters:	voltageRange – Type: uint8, Range: See constants, Default: 1 currentRange – Type: uint8, Range: See constants, Default: 0
Returns:	err – Type: error

Configures the voltage and current range.

Possible voltage ranges are:

0V to 5V
0V to 10V

Possible current ranges are:

4mA to 20mA
0mA to 20mA
0mA to 24mA

The resolution will always be 12 bit. This means, that the precision is higher with a smaller range.

The following constants are available for this function:

For voltageRange:

industrial_analog_out_v2_bricklet.VoltageRange0To5V = 0
industrial_analog_out_v2_bricklet.VoltageRange0To10V = 1

For currentRange:

industrial_analog_out_v2_bricklet.CurrentRange4To20mA = 0
industrial_analog_out_v2_bricklet.CurrentRange0To20mA = 1
industrial_analog_out_v2_bricklet.CurrentRange0To24mA = 2

func (*IndustrialAnalogOutV2Bricklet) GetConfiguration() (voltageRange uint8, currentRange uint8, err error)¶

Returns:	voltageRange – Type: uint8, Range: See constants, Default: 1 currentRange – Type: uint8, Range: See constants, Default: 0 err – Type: error

Returns the configuration as set by SetConfiguration().

The following constants are available for this function:

For voltageRange:

industrial_analog_out_v2_bricklet.VoltageRange0To5V = 0
industrial_analog_out_v2_bricklet.VoltageRange0To10V = 1

For currentRange:

industrial_analog_out_v2_bricklet.CurrentRange4To20mA = 0
industrial_analog_out_v2_bricklet.CurrentRange0To20mA = 1
industrial_analog_out_v2_bricklet.CurrentRange0To24mA = 2

func (*IndustrialAnalogOutV2Bricklet) GetSPITFPErrorCount() (errorCountAckChecksum uint32, errorCountMessageChecksum uint32, errorCountFrame uint32, errorCountOverflow uint32, err error)¶

Returns:	errorCountAckChecksum – Type: uint32, Range: [0 to 2³² - 1] errorCountMessageChecksum – Type: uint32, Range: [0 to 2³² - 1] errorCountFrame – Type: uint32, Range: [0 to 2³² - 1] errorCountOverflow – Type: uint32, Range: [0 to 2³² - 1] err – Type: error

Returns the error count for the communication between Brick and Bricklet.

The errors are divided into

ACK checksum errors,
message checksum errors,
framing errors and
overflow errors.

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.

func (*IndustrialAnalogOutV2Bricklet) SetStatusLEDConfig(config uint8) (err error)¶

Parameters:	config – Type: uint8, Range: See constants, Default: 3
Returns:	err – Type: error

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:

industrial_analog_out_v2_bricklet.StatusLEDConfigOff = 0
industrial_analog_out_v2_bricklet.StatusLEDConfigOn = 1
industrial_analog_out_v2_bricklet.StatusLEDConfigShowHeartbeat = 2
industrial_analog_out_v2_bricklet.StatusLEDConfigShowStatus = 3

func (*IndustrialAnalogOutV2Bricklet) GetStatusLEDConfig() (config uint8, err error)¶

Returns:	config – Type: uint8, Range: See constants, Default: 3 err – Type: error

Returns the configuration as set by SetStatusLEDConfig()

The following constants are available for this function:

For config:

industrial_analog_out_v2_bricklet.StatusLEDConfigOff = 0
industrial_analog_out_v2_bricklet.StatusLEDConfigOn = 1
industrial_analog_out_v2_bricklet.StatusLEDConfigShowHeartbeat = 2
industrial_analog_out_v2_bricklet.StatusLEDConfigShowStatus = 3

func (*IndustrialAnalogOutV2Bricklet) GetChipTemperature() (temperature int16, err error)¶

Returns:	temperature – Type: int16, Unit: 1 °C, Range: [-2¹⁵ to 2¹⁵ - 1] err – Type: error

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.

func (*IndustrialAnalogOutV2Bricklet) Reset() (err error)¶

Returns:	err – Type: error

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!

func (*IndustrialAnalogOutV2Bricklet) GetIdentity() (uid string, connectedUid string, position rune, hardwareVersion [3]uint8, firmwareVersion [3]uint8, deviceIdentifier uint16, err error)¶

Returns:

Returns:	uid – Type: string, Length: up to 8 connectedUid – Type: string, Length: up to 8 position – Type: rune, Range: ['a' to 'h', 'z'] hardwareVersion – Type: [3]uint8 0: major – Type: uint8, Range: [0 to 255] 1: minor – Type: uint8, Range: [0 to 255] 2: revision – Type: uint8, Range: [0 to 255] firmwareVersion – Type: [3]uint8 0: major – Type: uint8, Range: [0 to 255] 1: minor – Type: uint8, Range: [0 to 255] 2: revision – Type: uint8, Range: [0 to 255] deviceIdentifier – Type: uint16, Range: [0 to 2¹⁶ - 1] err – Type: error

uid – Type: string, Length: up to 8
connectedUid – Type: string, Length: up to 8
position – Type: rune, Range: ['a' to 'h', 'z']
hardwareVersion – Type: [3]uint8

0: major – Type: uint8, Range: [0 to 255]
1: minor – Type: uint8, Range: [0 to 255]
2: revision – Type: uint8, Range: [0 to 255]

firmwareVersion – Type: [3]uint8

0: major – Type: uint8, Range: [0 to 255]
1: minor – Type: uint8, Range: [0 to 255]
2: revision – Type: uint8, Range: [0 to 255]

deviceIdentifier – Type: uint16, Range: [0 to 2¹⁶ - 1]
err – Type: 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 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.

Virtual Functions¶

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.

func (*IndustrialAnalogOutV2Bricklet) GetAPIVersion() (apiVersion [3]uint8, err error)¶

Returns:	apiVersion – Type: [3]uint8 0: major – Type: uint8, Range: [0 to 255] 1: minor – Type: uint8, Range: [0 to 255] 2: revision – Type: uint8, Range: [0 to 255] err – Type: error

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.

func (*IndustrialAnalogOutV2Bricklet) GetResponseExpected(functionId uint8) (responseExpected bool, err error)¶

Parameters:	functionId – Type: uint8, Range: See constants
Returns:	responseExpected – Type: bool err – Type: 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.

The following constants are available for this function:

For functionId:

industrial_analog_out_v2_bricklet.FunctionSetEnabled = 1
industrial_analog_out_v2_bricklet.FunctionSetVoltage = 3
industrial_analog_out_v2_bricklet.FunctionSetCurrent = 5
industrial_analog_out_v2_bricklet.FunctionSetConfiguration = 7
industrial_analog_out_v2_bricklet.FunctionSetOutLEDConfig = 9
industrial_analog_out_v2_bricklet.FunctionSetOutLEDStatusConfig = 11
industrial_analog_out_v2_bricklet.FunctionSetWriteFirmwarePointer = 237
industrial_analog_out_v2_bricklet.FunctionSetStatusLEDConfig = 239
industrial_analog_out_v2_bricklet.FunctionReset = 243
industrial_analog_out_v2_bricklet.FunctionWriteUID = 248

func (*IndustrialAnalogOutV2Bricklet) SetResponseExpected(functionId uint8, responseExpected bool) (err error)¶

Parameters:	functionId – Type: uint8, Range: See constants responseExpected – Type: bool
Returns:	err – Type: 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.

The following constants are available for this function:

For functionId:

industrial_analog_out_v2_bricklet.FunctionSetEnabled = 1
industrial_analog_out_v2_bricklet.FunctionSetVoltage = 3
industrial_analog_out_v2_bricklet.FunctionSetCurrent = 5
industrial_analog_out_v2_bricklet.FunctionSetConfiguration = 7
industrial_analog_out_v2_bricklet.FunctionSetOutLEDConfig = 9
industrial_analog_out_v2_bricklet.FunctionSetOutLEDStatusConfig = 11
industrial_analog_out_v2_bricklet.FunctionSetWriteFirmwarePointer = 237
industrial_analog_out_v2_bricklet.FunctionSetStatusLEDConfig = 239
industrial_analog_out_v2_bricklet.FunctionReset = 243
industrial_analog_out_v2_bricklet.FunctionWriteUID = 248

func (*IndustrialAnalogOutV2Bricklet) SetResponseExpectedAll(responseExpected bool) (err error)¶

Parameters:	responseExpected – Type: bool
Returns:	err – Type: error

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

Internal Functions¶

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.

func (*IndustrialAnalogOutV2Bricklet) SetBootloaderMode(mode uint8) (status uint8, err error)¶

Parameters:	mode – Type: uint8, Range: See constants
Returns:	status – Type: uint8, Range: See constants err – Type: error

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:

industrial_analog_out_v2_bricklet.BootloaderModeBootloader = 0
industrial_analog_out_v2_bricklet.BootloaderModeFirmware = 1
industrial_analog_out_v2_bricklet.BootloaderModeBootloaderWaitForReboot = 2
industrial_analog_out_v2_bricklet.BootloaderModeFirmwareWaitForReboot = 3
industrial_analog_out_v2_bricklet.BootloaderModeFirmwareWaitForEraseAndReboot = 4

For status:

industrial_analog_out_v2_bricklet.BootloaderStatusOK = 0
industrial_analog_out_v2_bricklet.BootloaderStatusInvalidMode = 1
industrial_analog_out_v2_bricklet.BootloaderStatusNoChange = 2
industrial_analog_out_v2_bricklet.BootloaderStatusEntryFunctionNotPresent = 3
industrial_analog_out_v2_bricklet.BootloaderStatusDeviceIdentifierIncorrect = 4
industrial_analog_out_v2_bricklet.BootloaderStatusCRCMismatch = 5

func (*IndustrialAnalogOutV2Bricklet) GetBootloaderMode() (mode uint8, err error)¶

Returns:	mode – Type: uint8, Range: See constants err – Type: error

Returns the current bootloader mode, see SetBootloaderMode().

The following constants are available for this function:

For mode:

industrial_analog_out_v2_bricklet.BootloaderModeBootloader = 0
industrial_analog_out_v2_bricklet.BootloaderModeFirmware = 1
industrial_analog_out_v2_bricklet.BootloaderModeBootloaderWaitForReboot = 2
industrial_analog_out_v2_bricklet.BootloaderModeFirmwareWaitForReboot = 3
industrial_analog_out_v2_bricklet.BootloaderModeFirmwareWaitForEraseAndReboot = 4

func (*IndustrialAnalogOutV2Bricklet) SetWriteFirmwarePointer(pointer uint32) (err error)¶

Parameters:	pointer – Type: uint32, Unit: 1 B, Range: [0 to 2³² - 1]
Returns:	err – Type: error

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.

func (*IndustrialAnalogOutV2Bricklet) WriteFirmware(data [64]uint8) (status uint8, err error)¶

Parameters:	data – Type: [64]uint8, Range: [0 to 255]
Returns:	status – Type: uint8, Range: [0 to 255] err – Type: error

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.

func (*IndustrialAnalogOutV2Bricklet) WriteUID(uid uint32) (err error)¶

Parameters:	uid – Type: uint32, Range: [0 to 2³² - 1]
Returns:	err – Type: error

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.

func (*IndustrialAnalogOutV2Bricklet) ReadUID() (uid uint32, err error)¶

Returns:	uid – Type: uint32, Range: [0 to 2³² - 1] err – Type: error

Returns the current UID as an integer. Encode as Base58 to get the usual string version.

Constants¶

industrial_analog_out_v2_bricklet.DeviceIdentifier¶

This constant is used to identify a Industrial Analog Out Bricklet 2.0.

The GetIdentity() function and the (*IPConnection) RegisterEnumerateCallback callback of the IPConnection have a deviceIdentifier parameter to specify the Brick's or Bricklet's type.

industrial_analog_out_v2_bricklet.DeviceDisplayName¶: This constant represents the human readable name of a Industrial Analog Out Bricklet 2.0.