/
rotary_poti_v2_bricklet.go
775 lines (633 loc) · 25.7 KB
/
rotary_poti_v2_bricklet.go
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/* ***********************************************************
* This file was automatically generated on 2024-02-27. *
* *
* Go Bindings Version 2.0.15 *
* *
* If you have a bugfix for this file and want to commit it, *
* please fix the bug in the generator. You can find a link *
* to the generators git repository on tinkerforge.com *
*************************************************************/
// 300° rotary potentiometer.
//
//
// See also the documentation here: https://www.tinkerforge.com/en/doc/Software/Bricklets/RotaryPotiV2_Bricklet_Go.html.
package rotary_poti_v2_bricklet
import (
"bytes"
"encoding/binary"
"fmt"
. "github.com/Tinkerforge/go-api-bindings/internal"
"github.com/Tinkerforge/go-api-bindings/ipconnection"
)
type Function = uint8
const (
FunctionGetPosition Function = 1
FunctionSetPositionCallbackConfiguration Function = 2
FunctionGetPositionCallbackConfiguration Function = 3
FunctionGetSPITFPErrorCount Function = 234
FunctionSetBootloaderMode Function = 235
FunctionGetBootloaderMode Function = 236
FunctionSetWriteFirmwarePointer Function = 237
FunctionWriteFirmware Function = 238
FunctionSetStatusLEDConfig Function = 239
FunctionGetStatusLEDConfig Function = 240
FunctionGetChipTemperature Function = 242
FunctionReset Function = 243
FunctionWriteUID Function = 248
FunctionReadUID Function = 249
FunctionGetIdentity Function = 255
FunctionCallbackPosition Function = 4
)
type ThresholdOption = rune
const (
ThresholdOptionOff ThresholdOption = 'x'
ThresholdOptionOutside ThresholdOption = 'o'
ThresholdOptionInside ThresholdOption = 'i'
ThresholdOptionSmaller ThresholdOption = '<'
ThresholdOptionGreater ThresholdOption = '>'
)
type BootloaderMode = uint8
const (
BootloaderModeBootloader BootloaderMode = 0
BootloaderModeFirmware BootloaderMode = 1
BootloaderModeBootloaderWaitForReboot BootloaderMode = 2
BootloaderModeFirmwareWaitForReboot BootloaderMode = 3
BootloaderModeFirmwareWaitForEraseAndReboot BootloaderMode = 4
)
type BootloaderStatus = uint8
const (
BootloaderStatusOK BootloaderStatus = 0
BootloaderStatusInvalidMode BootloaderStatus = 1
BootloaderStatusNoChange BootloaderStatus = 2
BootloaderStatusEntryFunctionNotPresent BootloaderStatus = 3
BootloaderStatusDeviceIdentifierIncorrect BootloaderStatus = 4
BootloaderStatusCRCMismatch BootloaderStatus = 5
)
type StatusLEDConfig = uint8
const (
StatusLEDConfigOff StatusLEDConfig = 0
StatusLEDConfigOn StatusLEDConfig = 1
StatusLEDConfigShowHeartbeat StatusLEDConfig = 2
StatusLEDConfigShowStatus StatusLEDConfig = 3
)
type RotaryPotiV2Bricklet struct {
device Device
}
const DeviceIdentifier = 2140
const DeviceDisplayName = "Rotary Poti Bricklet 2.0"
// Creates an object with the unique device ID `uid`. This object can then be used after the IP Connection `ipcon` is connected.
func New(uid string, ipcon *ipconnection.IPConnection) (RotaryPotiV2Bricklet, error) {
internalIPCon := ipcon.GetInternalHandle().(IPConnection)
dev, err := NewDevice([3]uint8{2, 0, 0}, uid, &internalIPCon, 0, DeviceIdentifier, DeviceDisplayName)
if err != nil {
return RotaryPotiV2Bricklet{}, err
}
dev.ResponseExpected[FunctionGetPosition] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionSetPositionCallbackConfiguration] = ResponseExpectedFlagTrue
dev.ResponseExpected[FunctionGetPositionCallbackConfiguration] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionGetSPITFPErrorCount] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionSetBootloaderMode] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionGetBootloaderMode] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionSetWriteFirmwarePointer] = ResponseExpectedFlagFalse
dev.ResponseExpected[FunctionWriteFirmware] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionSetStatusLEDConfig] = ResponseExpectedFlagFalse
dev.ResponseExpected[FunctionGetStatusLEDConfig] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionGetChipTemperature] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionReset] = ResponseExpectedFlagFalse
dev.ResponseExpected[FunctionWriteUID] = ResponseExpectedFlagFalse
dev.ResponseExpected[FunctionReadUID] = ResponseExpectedFlagAlwaysTrue
dev.ResponseExpected[FunctionGetIdentity] = ResponseExpectedFlagAlwaysTrue
return RotaryPotiV2Bricklet{dev}, nil
}
// 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 (device *RotaryPotiV2Bricklet) GetResponseExpected(functionID Function) (bool, error) {
return device.device.GetResponseExpected(uint8(functionID))
}
// 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 (device *RotaryPotiV2Bricklet) SetResponseExpected(functionID Function, responseExpected bool) error {
return device.device.SetResponseExpected(uint8(functionID), responseExpected)
}
// Changes the response expected flag for all setter and callback configuration functions of this device at once.
func (device *RotaryPotiV2Bricklet) SetResponseExpectedAll(responseExpected bool) {
device.device.SetResponseExpectedAll(responseExpected)
}
// 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 (device *RotaryPotiV2Bricklet) GetAPIVersion() [3]uint8 {
return device.device.GetAPIVersion()
}
// This callback is triggered periodically according to the configuration set by
// SetPositionCallbackConfiguration.
//
// The parameter is the same as GetPosition.
func (device *RotaryPotiV2Bricklet) RegisterPositionCallback(fn func(int16)) uint64 {
wrapper := func(byteSlice []byte) {
var header PacketHeader
header.FillFromBytes(byteSlice)
if header.Length != 10 {
return
}
buf := bytes.NewBuffer(byteSlice[8:])
var position int16
binary.Read(buf, binary.LittleEndian, &position)
fn(position)
}
return device.device.RegisterCallback(uint8(FunctionCallbackPosition), wrapper)
}
// Remove a registered Position callback.
func (device *RotaryPotiV2Bricklet) DeregisterPositionCallback(registrationId uint64) {
device.device.DeregisterCallback(uint8(FunctionCallbackPosition), registrationId)
}
// Returns the position of the rotary potentiometer. The value is
// between -150° (turned left) and 150° (turned right).
//
//
// If you want to get the value periodically, it is recommended to use the
// RegisterPositionCallback callback. You can set the callback configuration
// with SetPositionCallbackConfiguration.
func (device *RotaryPotiV2Bricklet) GetPosition() (position int16, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetPosition), buf.Bytes())
if err != nil {
return position, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return position, DeviceError(header.ErrorCode)
}
if header.Length != 10 {
return position, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 10)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &position)
}
return position, nil
}
// The period is the period with which the RegisterPositionCallback 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.
//
// It is furthermore possible to constrain the callback with thresholds.
//
// The `option`-parameter together with min/max sets a threshold for the RegisterPositionCallback callback.
//
// The following options are possible:
//
// Option| Description
// --- | ---
// 'x'| Threshold is turned off
// 'o'| Threshold is triggered when the value is *outside* the min and max values
// 'i'| Threshold is triggered when the value is *inside* or equal to the min and max values
// '<'| Threshold is triggered when the value is smaller than the min value (max is ignored)
// '>'| Threshold is triggered when the value is greater than the min value (max is ignored)
//
// If the option is set to 'x' (threshold turned off) the callback is triggered with the fixed period.
//
// Associated constants:
//
// * ThresholdOptionOff
// * ThresholdOptionOutside
// * ThresholdOptionInside
// * ThresholdOptionSmaller
// * ThresholdOptionGreater
func (device *RotaryPotiV2Bricklet) SetPositionCallbackConfiguration(period uint32, valueHasToChange bool, option ThresholdOption, min int16, max int16) (err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, period)
binary.Write(&buf, binary.LittleEndian, valueHasToChange)
binary.Write(&buf, binary.LittleEndian, option)
binary.Write(&buf, binary.LittleEndian, min)
binary.Write(&buf, binary.LittleEndian, max)
resultBytes, err := device.device.Set(uint8(FunctionSetPositionCallbackConfiguration), buf.Bytes())
if err != nil {
return err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return DeviceError(header.ErrorCode)
}
if header.Length != 8 {
return fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 8)
}
bytes.NewBuffer(resultBytes[8:])
}
return nil
}
// Returns the callback configuration as set by SetPositionCallbackConfiguration.
//
// Associated constants:
//
// * ThresholdOptionOff
// * ThresholdOptionOutside
// * ThresholdOptionInside
// * ThresholdOptionSmaller
// * ThresholdOptionGreater
func (device *RotaryPotiV2Bricklet) GetPositionCallbackConfiguration() (period uint32, valueHasToChange bool, option ThresholdOption, min int16, max int16, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetPositionCallbackConfiguration), buf.Bytes())
if err != nil {
return period, valueHasToChange, option, min, max, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return period, valueHasToChange, option, min, max, DeviceError(header.ErrorCode)
}
if header.Length != 18 {
return period, valueHasToChange, option, min, max, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 18)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &period)
binary.Read(resultBuf, binary.LittleEndian, &valueHasToChange)
binary.Read(resultBuf, binary.LittleEndian, &option)
binary.Read(resultBuf, binary.LittleEndian, &min)
binary.Read(resultBuf, binary.LittleEndian, &max)
}
return period, valueHasToChange, option, min, max, nil
}
// 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 (device *RotaryPotiV2Bricklet) GetSPITFPErrorCount() (errorCountAckChecksum uint32, errorCountMessageChecksum uint32, errorCountFrame uint32, errorCountOverflow uint32, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetSPITFPErrorCount), buf.Bytes())
if err != nil {
return errorCountAckChecksum, errorCountMessageChecksum, errorCountFrame, errorCountOverflow, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return errorCountAckChecksum, errorCountMessageChecksum, errorCountFrame, errorCountOverflow, DeviceError(header.ErrorCode)
}
if header.Length != 24 {
return errorCountAckChecksum, errorCountMessageChecksum, errorCountFrame, errorCountOverflow, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 24)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &errorCountAckChecksum)
binary.Read(resultBuf, binary.LittleEndian, &errorCountMessageChecksum)
binary.Read(resultBuf, binary.LittleEndian, &errorCountFrame)
binary.Read(resultBuf, binary.LittleEndian, &errorCountOverflow)
}
return errorCountAckChecksum, errorCountMessageChecksum, errorCountFrame, errorCountOverflow, nil
}
// 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.
//
// Associated constants:
//
// * BootloaderModeBootloader
// * BootloaderModeFirmware
// * BootloaderModeBootloaderWaitForReboot
// * BootloaderModeFirmwareWaitForReboot
// * BootloaderModeFirmwareWaitForEraseAndReboot
// * BootloaderStatusOK
// * BootloaderStatusInvalidMode
// * BootloaderStatusNoChange
// * BootloaderStatusEntryFunctionNotPresent
// * BootloaderStatusDeviceIdentifierIncorrect
// * BootloaderStatusCRCMismatch
func (device *RotaryPotiV2Bricklet) SetBootloaderMode(mode BootloaderMode) (status BootloaderStatus, err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, mode)
resultBytes, err := device.device.Get(uint8(FunctionSetBootloaderMode), buf.Bytes())
if err != nil {
return status, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return status, DeviceError(header.ErrorCode)
}
if header.Length != 9 {
return status, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 9)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &status)
}
return status, nil
}
// Returns the current bootloader mode, see SetBootloaderMode.
//
// Associated constants:
//
// * BootloaderModeBootloader
// * BootloaderModeFirmware
// * BootloaderModeBootloaderWaitForReboot
// * BootloaderModeFirmwareWaitForReboot
// * BootloaderModeFirmwareWaitForEraseAndReboot
func (device *RotaryPotiV2Bricklet) GetBootloaderMode() (mode BootloaderMode, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetBootloaderMode), buf.Bytes())
if err != nil {
return mode, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return mode, DeviceError(header.ErrorCode)
}
if header.Length != 9 {
return mode, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 9)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &mode)
}
return mode, nil
}
// 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 (device *RotaryPotiV2Bricklet) SetWriteFirmwarePointer(pointer uint32) (err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, pointer)
resultBytes, err := device.device.Set(uint8(FunctionSetWriteFirmwarePointer), buf.Bytes())
if err != nil {
return err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return DeviceError(header.ErrorCode)
}
if header.Length != 8 {
return fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 8)
}
bytes.NewBuffer(resultBytes[8:])
}
return nil
}
// 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 (device *RotaryPotiV2Bricklet) WriteFirmware(data [64]uint8) (status uint8, err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, data)
resultBytes, err := device.device.Get(uint8(FunctionWriteFirmware), buf.Bytes())
if err != nil {
return status, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return status, DeviceError(header.ErrorCode)
}
if header.Length != 9 {
return status, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 9)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &status)
}
return status, nil
}
// 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.
//
// Associated constants:
//
// * StatusLEDConfigOff
// * StatusLEDConfigOn
// * StatusLEDConfigShowHeartbeat
// * StatusLEDConfigShowStatus
func (device *RotaryPotiV2Bricklet) SetStatusLEDConfig(config StatusLEDConfig) (err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, config)
resultBytes, err := device.device.Set(uint8(FunctionSetStatusLEDConfig), buf.Bytes())
if err != nil {
return err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return DeviceError(header.ErrorCode)
}
if header.Length != 8 {
return fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 8)
}
bytes.NewBuffer(resultBytes[8:])
}
return nil
}
// Returns the configuration as set by SetStatusLEDConfig
//
// Associated constants:
//
// * StatusLEDConfigOff
// * StatusLEDConfigOn
// * StatusLEDConfigShowHeartbeat
// * StatusLEDConfigShowStatus
func (device *RotaryPotiV2Bricklet) GetStatusLEDConfig() (config StatusLEDConfig, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetStatusLEDConfig), buf.Bytes())
if err != nil {
return config, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return config, DeviceError(header.ErrorCode)
}
if header.Length != 9 {
return config, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 9)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &config)
}
return config, nil
}
// 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 (device *RotaryPotiV2Bricklet) GetChipTemperature() (temperature int16, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetChipTemperature), buf.Bytes())
if err != nil {
return temperature, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return temperature, DeviceError(header.ErrorCode)
}
if header.Length != 10 {
return temperature, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 10)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &temperature)
}
return temperature, nil
}
// 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 (device *RotaryPotiV2Bricklet) Reset() (err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Set(uint8(FunctionReset), buf.Bytes())
if err != nil {
return err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return DeviceError(header.ErrorCode)
}
if header.Length != 8 {
return fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 8)
}
bytes.NewBuffer(resultBytes[8:])
}
return nil
}
// 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 (device *RotaryPotiV2Bricklet) WriteUID(uid uint32) (err error) {
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, uid)
resultBytes, err := device.device.Set(uint8(FunctionWriteUID), buf.Bytes())
if err != nil {
return err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return DeviceError(header.ErrorCode)
}
if header.Length != 8 {
return fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 8)
}
bytes.NewBuffer(resultBytes[8:])
}
return nil
}
// Returns the current UID as an integer. Encode as
// Base58 to get the usual string version.
func (device *RotaryPotiV2Bricklet) ReadUID() (uid uint32, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionReadUID), buf.Bytes())
if err != nil {
return uid, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return uid, DeviceError(header.ErrorCode)
}
if header.Length != 12 {
return uid, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 12)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
binary.Read(resultBuf, binary.LittleEndian, &uid)
}
return uid, nil
}
// 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 (device *RotaryPotiV2Bricklet) GetIdentity() (uid string, connectedUid string, position rune, hardwareVersion [3]uint8, firmwareVersion [3]uint8, deviceIdentifier uint16, err error) {
var buf bytes.Buffer
resultBytes, err := device.device.Get(uint8(FunctionGetIdentity), buf.Bytes())
if err != nil {
return uid, connectedUid, position, hardwareVersion, firmwareVersion, deviceIdentifier, err
}
if len(resultBytes) > 0 {
var header PacketHeader
header.FillFromBytes(resultBytes)
if header.ErrorCode != 0 {
return uid, connectedUid, position, hardwareVersion, firmwareVersion, deviceIdentifier, DeviceError(header.ErrorCode)
}
if header.Length != 33 {
return uid, connectedUid, position, hardwareVersion, firmwareVersion, deviceIdentifier, fmt.Errorf("Received packet of unexpected size %d, instead of %d", header.Length, 33)
}
resultBuf := bytes.NewBuffer(resultBytes[8:])
uid = ByteSliceToString(resultBuf.Next(8))
connectedUid = ByteSliceToString(resultBuf.Next(8))
position = rune(resultBuf.Next(1)[0])
binary.Read(resultBuf, binary.LittleEndian, &hardwareVersion)
binary.Read(resultBuf, binary.LittleEndian, &firmwareVersion)
binary.Read(resultBuf, binary.LittleEndian, &deviceIdentifier)
}
return uid, connectedUid, position, hardwareVersion, firmwareVersion, deviceIdentifier, nil
}