This is the description of the Go API bindings for the Industrial Analog Out Bricklet. General information and technical specifications for the Industrial Analog Out Bricklet 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.
The example code below is Public Domain (CC0 1.0).
Download (example_simple_current.go)
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 | package main
import (
"fmt"
"github.com/Tinkerforge/go-api-bindings/industrial_analog_out_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.
func main() {
ipcon := ipconnection.New()
defer ipcon.Close()
iao, _ := industrial_analog_out_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.Enable()
fmt.Print("Press enter to exit.")
fmt.Scanln()
iao.Disable()
}
|
Download (example_simple_voltage.go)
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 | package main
import (
"fmt"
"github.com/Tinkerforge/go-api-bindings/industrial_analog_out_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.
func main() {
ipcon := ipconnection.New()
defer ipcon.Close()
iao, _ := industrial_analog_out_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.Enable()
fmt.Print("Press enter to exit.")
fmt.Scanln()
iao.Disable()
}
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The Industrial Analog Out Bricklet's API is defined in the package github.com/Tinkerforge/go-api-bindings/industrial_analog_out_bricklet
Nearly every function of the Go bindings can return an BrickletError, implementing the error interface. The error can have one of the following values:
which correspond to the values returned from Bricks and Bricklets.
All functions listed below are thread-safe.
Creates a new IndustrialAnalogOutBricklet object with the unique device ID uid and adds it to the IPConnection ipcon:
This device object can be used after the IP connection has been connected (see examples above).
Enables the output of voltage and current.
The default is disabled.
Disables the output of voltage and current.
The default is disabled.
Returns true if output of voltage and current is enabled, false otherwise.
Sets the output voltage in mV.
The output voltage and output current are linked. Changing the output voltage also changes the output current.
Returns the voltage as set by (*IndustrialAnalogOutBricklet) SetVoltage.
Sets the output current in µA.
The output current and output voltage are linked. Changing the output current also changes the output voltage.
Returns the current as set by (*IndustrialAnalogOutBricklet) SetCurrent.
Configures the voltage and current range.
Possible voltage ranges are:
Possible current ranges are:
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:
Returns the configuration as set by (*IndustrialAnalogOutBricklet) SetConfiguration.
The following constants are available for this function:
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.
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 (*IndustrialAnalogOutBricklet) 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 send and errors are silently ignored, because they cannot be detected.
See (*IndustrialAnalogOutBricklet) SetResponseExpected for the list of function ID constants available for this function.
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 send and errors are silently ignored, because they cannot be detected.
The following function ID constants are available for this function:
Changes the response expected flag for all setter and callback configuration functions of this device at once.
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' or 'd'.
The device identifier numbers can be found here. There is also a constant for the device identifier of this Bricklet.
This constant is used to identify a Industrial Analog Out Bricklet.
The (*IndustrialAnalogOutBricklet) GetIdentity function and the (*IPConnection) RegisterEnumerateCallback callback of the IP Connection have a deviceIdentifier parameter to specify the Brick's or Bricklet's type.
This constant represents the human readable name of a Industrial Analog Out Bricklet.