thermocouple_v2_bricklet

package
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 Go to latest Published: Feb 27, 2024 License: CC0-1.0 Imports: 5 Imported by: 0

Documentation

Overview

Measures temperature with thermocouples.

See also the documentation here: https://www.tinkerforge.com/en/doc/Software/Bricklets/ThermocoupleV2_Bricklet_Go.html.

Index

Constants

View Source 
const DeviceDisplayName = "Thermocouple Bricklet 2.0"
View Source 
const DeviceIdentifier = 2109

Variables

This section is empty.

Functions

This section is empty.

Types

type Averaging 

type Averaging = uint8
const (
	Averaging1  Averaging = 1
	Averaging2  Averaging = 2
	Averaging4  Averaging = 4
	Averaging8  Averaging = 8
	Averaging16 Averaging = 16
)

type BootloaderMode 

type BootloaderMode = uint8
const (
	BootloaderModeBootloader                    BootloaderMode = 0
	BootloaderModeFirmware                      BootloaderMode = 1
	BootloaderModeBootloaderWaitForReboot       BootloaderMode = 2
	BootloaderModeFirmwareWaitForReboot         BootloaderMode = 3
	BootloaderModeFirmwareWaitForEraseAndReboot BootloaderMode = 4
)

type BootloaderStatus 

type BootloaderStatus = uint8
const (
	BootloaderStatusOK                        BootloaderStatus = 0
	BootloaderStatusInvalidMode               BootloaderStatus = 1
	BootloaderStatusNoChange                  BootloaderStatus = 2
	BootloaderStatusEntryFunctionNotPresent   BootloaderStatus = 3
	BootloaderStatusDeviceIdentifierIncorrect BootloaderStatus = 4
	BootloaderStatusCRCMismatch               BootloaderStatus = 5
)

type FilterOption 

type FilterOption = uint8
const (
	FilterOption50Hz FilterOption = 0
	FilterOption60Hz FilterOption = 1
)

type Function 

type Function = uint8
const (
	FunctionGetTemperature                      Function = 1
	FunctionSetTemperatureCallbackConfiguration Function = 2
	FunctionGetTemperatureCallbackConfiguration Function = 3
	FunctionSetConfiguration                    Function = 5
	FunctionGetConfiguration                    Function = 6
	FunctionGetErrorState                       Function = 7
	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
	FunctionCallbackTemperature                 Function = 4
	FunctionCallbackErrorState                  Function = 8
)

type StatusLEDConfig 

type StatusLEDConfig = uint8
const (
	StatusLEDConfigOff           StatusLEDConfig = 0
	StatusLEDConfigOn            StatusLEDConfig = 1
	StatusLEDConfigShowHeartbeat StatusLEDConfig = 2
	StatusLEDConfigShowStatus    StatusLEDConfig = 3
)

type ThermocoupleV2Bricklet 

type ThermocoupleV2Bricklet struct {
	// contains filtered or unexported fields
}

func New 

func New(uid string, ipcon *ipconnection.IPConnection) (ThermocoupleV2Bricklet, error)

Creates an object with the unique device ID `uid`. This object can then be used after the IP Connection `ipcon` is connected.

func (*ThermocoupleV2Bricklet) DeregisterErrorStateCallback 

func (device *ThermocoupleV2Bricklet) DeregisterErrorStateCallback(registrationId uint64)

Remove a registered Error State callback.

func (*ThermocoupleV2Bricklet) DeregisterTemperatureCallback 

func (device *ThermocoupleV2Bricklet) DeregisterTemperatureCallback(registrationId uint64)

Remove a registered Temperature callback.

func (*ThermocoupleV2Bricklet) GetAPIVersion 

func (device *ThermocoupleV2Bricklet) GetAPIVersion() [3]uint8

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 (*ThermocoupleV2Bricklet) GetBootloaderMode 

func (device *ThermocoupleV2Bricklet) GetBootloaderMode() (mode BootloaderMode, err error)

Returns the current bootloader mode, see SetBootloaderMode.

Associated constants:

  • BootloaderModeBootloader
  • BootloaderModeFirmware
  • BootloaderModeBootloaderWaitForReboot
  • BootloaderModeFirmwareWaitForReboot
  • BootloaderModeFirmwareWaitForEraseAndReboot

func (*ThermocoupleV2Bricklet) GetChipTemperature 

func (device *ThermocoupleV2Bricklet) GetChipTemperature() (temperature int16, err 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 (*ThermocoupleV2Bricklet) GetConfiguration 

func (device *ThermocoupleV2Bricklet) GetConfiguration() (averaging Averaging, thermocoupleType Type, filter FilterOption, err error)

Returns the configuration as set by SetConfiguration.

Associated constants:

  • Averaging1
  • Averaging2
  • Averaging4
  • Averaging8
  • Averaging16
  • TypeB
  • TypeE
  • TypeJ
  • TypeK
  • TypeN
  • TypeR
  • TypeS
  • TypeT
  • TypeG8
  • TypeG32
  • FilterOption50Hz
  • FilterOption60Hz

func (*ThermocoupleV2Bricklet) GetErrorState 

func (device *ThermocoupleV2Bricklet) GetErrorState() (overUnder bool, openCircuit bool, err error)

Returns the current error state. There are two possible errors:

* Over/Under Voltage and * Open Circuit.

Over/Under Voltage happens for voltages below 0V or above 3.3V. In this case it is very likely that your thermocouple is defective. An Open Circuit error indicates that there is no thermocouple connected.

You can use the RegisterErrorStateCallback callback to automatically get triggered when the error state changes.

func (*ThermocoupleV2Bricklet) GetIdentity 

func (device *ThermocoupleV2Bricklet) GetIdentity() (uid string, connectedUid string, position rune, hardwareVersion [3]uint8, firmwareVersion [3]uint8, deviceIdentifier uint16, err 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 <isolator_bricklet>` is always at position 'z'.

The device identifier numbers can be found `here <device_identifier>`. |device_identifier_constant|

func (*ThermocoupleV2Bricklet) GetResponseExpected 

func (device *ThermocoupleV2Bricklet) GetResponseExpected(functionID Function) (bool, 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.

See SetResponseExpected for the list of function ID constants available for this function.

func (*ThermocoupleV2Bricklet) GetSPITFPErrorCount 

func (device *ThermocoupleV2Bricklet) GetSPITFPErrorCount() (errorCountAckChecksum uint32, errorCountMessageChecksum uint32, errorCountFrame uint32, errorCountOverflow uint32, err 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 (*ThermocoupleV2Bricklet) GetStatusLEDConfig 

func (device *ThermocoupleV2Bricklet) GetStatusLEDConfig() (config StatusLEDConfig, err error)

Returns the configuration as set by SetStatusLEDConfig

Associated constants:

  • StatusLEDConfigOff
  • StatusLEDConfigOn
  • StatusLEDConfigShowHeartbeat
  • StatusLEDConfigShowStatus

func (*ThermocoupleV2Bricklet) GetTemperature 

func (device *ThermocoupleV2Bricklet) GetTemperature() (temperature int32, err error)

Returns the temperature of the thermocouple. The value is given in °C/100, e.g. a value of 4223 means that a temperature of 42.23 °C is measured.

If you want to get the temperature periodically, it is recommended to use the RegisterTemperatureCallback callback and set the period with SetTemperatureCallbackConfiguration.

If you want to get the value periodically, it is recommended to use the RegisterTemperatureCallback callback. You can set the callback configuration with SetTemperatureCallbackConfiguration.

func (*ThermocoupleV2Bricklet) GetTemperatureCallbackConfiguration 

func (device *ThermocoupleV2Bricklet) GetTemperatureCallbackConfiguration() (period uint32, valueHasToChange bool, option ThresholdOption, min int32, max int32, err error)

Returns the callback configuration as set by SetTemperatureCallbackConfiguration.

Associated constants:

  • ThresholdOptionOff
  • ThresholdOptionOutside
  • ThresholdOptionInside
  • ThresholdOptionSmaller
  • ThresholdOptionGreater

func (*ThermocoupleV2Bricklet) ReadUID 

func (device *ThermocoupleV2Bricklet) ReadUID() (uid uint32, err error)

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

func (*ThermocoupleV2Bricklet) RegisterErrorStateCallback 

func (device *ThermocoupleV2Bricklet) RegisterErrorStateCallback(fn func(bool, bool)) uint64

This Callback is triggered every time the error state changes (see GetErrorState).

func (*ThermocoupleV2Bricklet) RegisterTemperatureCallback 

func (device *ThermocoupleV2Bricklet) RegisterTemperatureCallback(fn func(int32)) uint64

This callback is triggered periodically according to the configuration set by SetTemperatureCallbackConfiguration.

The parameter is the same as GetTemperature.

func (*ThermocoupleV2Bricklet) Reset 

func (device *ThermocoupleV2Bricklet) Reset() (err 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 (*ThermocoupleV2Bricklet) SetBootloaderMode 

func (device *ThermocoupleV2Bricklet) SetBootloaderMode(mode BootloaderMode) (status BootloaderStatus, err 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.

Associated constants:

  • BootloaderModeBootloader
  • BootloaderModeFirmware
  • BootloaderModeBootloaderWaitForReboot
  • BootloaderModeFirmwareWaitForReboot
  • BootloaderModeFirmwareWaitForEraseAndReboot
  • BootloaderStatusOK
  • BootloaderStatusInvalidMode
  • BootloaderStatusNoChange
  • BootloaderStatusEntryFunctionNotPresent
  • BootloaderStatusDeviceIdentifierIncorrect
  • BootloaderStatusCRCMismatch

func (*ThermocoupleV2Bricklet) SetConfiguration 

func (device *ThermocoupleV2Bricklet) SetConfiguration(averaging Averaging, thermocoupleType Type, filter FilterOption) (err error)

You can configure averaging size, thermocouple type and frequency filtering.

Available averaging sizes are 1, 2, 4, 8 and 16 samples.

As thermocouple type you can use B, E, J, K, N, R, S and T. If you have a different thermocouple or a custom thermocouple you can also use G8 and G32. With these types the returned value will not be in °C/100, it will be calculated by the following formulas:

* G8: “value = 8 * 1.6 * 2^17 * Vin“ * G32: “value = 32 * 1.6 * 2^17 * Vin“

where Vin is the thermocouple input voltage.

The frequency filter can be either configured to 50Hz or to 60Hz. You should configure it according to your utility frequency.

The conversion time depends on the averaging and filter configuration, it can be calculated as follows:

* 60Hz: “time = 82 + (samples - 1) * 16.67“ * 50Hz: “time = 98 + (samples - 1) * 20“

Associated constants:

  • Averaging1
  • Averaging2
  • Averaging4
  • Averaging8
  • Averaging16
  • TypeB
  • TypeE
  • TypeJ
  • TypeK
  • TypeN
  • TypeR
  • TypeS
  • TypeT
  • TypeG8
  • TypeG32
  • FilterOption50Hz
  • FilterOption60Hz

func (*ThermocoupleV2Bricklet) SetResponseExpected 

func (device *ThermocoupleV2Bricklet) SetResponseExpected(functionID Function, responseExpected bool) 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.

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 (*ThermocoupleV2Bricklet) SetResponseExpectedAll 

func (device *ThermocoupleV2Bricklet) SetResponseExpectedAll(responseExpected bool)

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

func (*ThermocoupleV2Bricklet) SetStatusLEDConfig 

func (device *ThermocoupleV2Bricklet) SetStatusLEDConfig(config StatusLEDConfig) (err 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.

Associated constants:

  • StatusLEDConfigOff
  • StatusLEDConfigOn
  • StatusLEDConfigShowHeartbeat
  • StatusLEDConfigShowStatus

func (*ThermocoupleV2Bricklet) SetTemperatureCallbackConfiguration 

func (device *ThermocoupleV2Bricklet) SetTemperatureCallbackConfiguration(period uint32, valueHasToChange bool, option ThresholdOption, min int32, max int32) (err error)

The period is the period with which the RegisterTemperatureCallback 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 RegisterTemperatureCallback 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 (*ThermocoupleV2Bricklet) SetWriteFirmwarePointer 

func (device *ThermocoupleV2Bricklet) SetWriteFirmwarePointer(pointer uint32) (err 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 (*ThermocoupleV2Bricklet) WriteFirmware 

func (device *ThermocoupleV2Bricklet) WriteFirmware(data [64]uint8) (status uint8, err 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 (*ThermocoupleV2Bricklet) WriteUID 

func (device *ThermocoupleV2Bricklet) WriteUID(uid uint32) (err 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.

type ThresholdOption 

type ThresholdOption = rune
const (
	ThresholdOptionOff     ThresholdOption = 'x'
	ThresholdOptionOutside ThresholdOption = 'o'
	ThresholdOptionInside  ThresholdOption = 'i'
	ThresholdOptionSmaller ThresholdOption = '<'
	ThresholdOptionGreater ThresholdOption = '>'
)

type Type 

type Type = uint8
const (
	TypeB   Type = 0
	TypeE   Type = 1
	TypeJ   Type = 2
	TypeK   Type = 3
	TypeN   Type = 4
	TypeR   Type = 5
	TypeS   Type = 6
	TypeT   Type = 7
	TypeG8  Type = 8
	TypeG32 Type = 9
)

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