pub struct PtcV2Bricklet { /* private fields */ }
Expand description

Reads temperatures from Pt100 und Pt1000 sensors

Implementations

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

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 set_response_expected. 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 set_response_expected 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.

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

This receiver is triggered periodically according to the configuration set by Set Temperature Receiver Configuration.

The parameter is the same as Get Temperature.

This receiver is triggered periodically according to the configuration set by Set Resistance Receiver Configuration.

The parameter is the same as Get Resistance.

This receiver is triggered periodically according to the configuration set by Set Sensor Connected Receiver Configuration.

The parameter is the same as Is Sensor Connected.

Returns the temperature of the connected sensor. The value has a range of -246 to 849 °C and 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 value periodically, it is recommended to use the get_temperature_callback_receiver receiver. You can set the receiver configuration with Set Temperature Receiver Configuration.

The period in ms is the period with which the get_temperature_callback_receiver receiver is triggered periodically. A value of 0 turns the receiver off.

If the value has to change-parameter is set to true, the receiver is only triggered after the value has changed. If the value didn’t change within the period, the receiver is triggered immediately on change.

If it is set to false, the receiver is continuously triggered with the period, independent of the value.

It is furthermore possible to constrain the receiver with thresholds.

The option-parameter together with min/max sets a threshold for the get_temperature_callback_receiver receiver.

The following options are possible:

OptionDescription
‘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 receiver is triggered with the fixed period.

The default value is (0, false, ‘x’, 0, 0).

Associated constants:

  • PTC_V2BRICKLET_THRESHOLD_OPTION_OFF
  • PTC_V2BRICKLET_THRESHOLD_OPTION_OUTSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_INSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_SMALLER
  • PTC_V2BRICKLET_THRESHOLD_OPTION_GREATER

Returns the receiver configuration as set by Set Temperature Receiver Configuration.

Associated constants:

  • PTC_V2BRICKLET_THRESHOLD_OPTION_OFF
  • PTC_V2BRICKLET_THRESHOLD_OPTION_OUTSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_INSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_SMALLER
  • PTC_V2BRICKLET_THRESHOLD_OPTION_GREATER

Returns the value as measured by the MAX31865 precision delta-sigma ADC.

The value can be converted with the following formulas:

  • Pt100: resistance = (value * 390) / 32768
  • Pt1000: resistance = (value * 3900) / 32768

If you want to get the value periodically, it is recommended to use the get_resistance_callback_receiver receiver. You can set the receiver configuration with Set Resistance Receiver Configuration.

The period in ms is the period with which the get_resistance_callback_receiver receiver is triggered periodically. A value of 0 turns the receiver off.

If the value has to change-parameter is set to true, the receiver is only triggered after the value has changed. If the value didn’t change within the period, the receiver is triggered immediately on change.

If it is set to false, the receiver is continuously triggered with the period, independent of the value.

It is furthermore possible to constrain the receiver with thresholds.

The option-parameter together with min/max sets a threshold for the get_resistance_callback_receiver receiver.

The following options are possible:

OptionDescription
‘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 receiver is triggered with the fixed period.

The default value is (0, false, ‘x’, 0, 0).

Associated constants:

  • PTC_V2BRICKLET_THRESHOLD_OPTION_OFF
  • PTC_V2BRICKLET_THRESHOLD_OPTION_OUTSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_INSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_SMALLER
  • PTC_V2BRICKLET_THRESHOLD_OPTION_GREATER

Returns the receiver configuration as set by Set Resistance Receiver Configuration.

Associated constants:

  • PTC_V2BRICKLET_THRESHOLD_OPTION_OFF
  • PTC_V2BRICKLET_THRESHOLD_OPTION_OUTSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_INSIDE
  • PTC_V2BRICKLET_THRESHOLD_OPTION_SMALLER
  • PTC_V2BRICKLET_THRESHOLD_OPTION_GREATER

Sets the noise rejection filter to either 50Hz (0) or 60Hz (1). Noise from 50Hz or 60Hz power sources (including harmonics of the AC power’s fundamental frequency) is attenuated by 82dB.

Default value is 0 = 50Hz.

Associated constants:

  • PTC_V2BRICKLET_FILTER_OPTION_50HZ
  • PTC_V2BRICKLET_FILTER_OPTION_60HZ

Returns the noise rejection filter option as set by Set Noise Rejection Filter

Associated constants:

  • PTC_V2BRICKLET_FILTER_OPTION_50HZ
  • PTC_V2BRICKLET_FILTER_OPTION_60HZ

Returns true if the sensor is connected correctly.

If this function returns false, there is either no Pt100 or Pt1000 sensor connected, the sensor is connected incorrectly or the sensor itself is faulty.

If you want to get the status automatically, it is recommended to use the get_sensor_connected_callback_receiver receiver. You can set the receiver configuration with Set Sensor Connected Receiver Configuration.

Sets the wire mode of the sensor. Possible values are 2, 3 and 4 which correspond to 2-, 3- and 4-wire sensors. The value has to match the jumper configuration on the Bricklet.

The default value is 2 = 2-wire.

Associated constants:

  • PTC_V2BRICKLET_WIRE_MODE_2
  • PTC_V2BRICKLET_WIRE_MODE_3
  • PTC_V2BRICKLET_WIRE_MODE_4

Returns the wire mode as set by Set Wire Mode

Associated constants:

  • PTC_V2BRICKLET_WIRE_MODE_2
  • PTC_V2BRICKLET_WIRE_MODE_3
  • PTC_V2BRICKLET_WIRE_MODE_4

Sets the length of a moving averaging__ for the resistance and temperature.

Setting the length to 1 will turn the averaging off. With less averaging, there is more noise on the data.

The range for the averaging is 1-1000.

New data is gathered every 20ms. With a moving average of length 1000 the resulting averaging window has a length of 20s. If you want to do long term measurements the longest moving average will give the cleanest results.

The default value is 1 for resistance and 40 for temperature. The default values match the non-changeable averaging settings of the old PTC Bricklet 1.0

Returns the moving average configuration as set by Set Moving Average Configuration.

If you enable this receiver, the get_sensor_connected_callback_receiver receiver is triggered every time a Pt sensor is connected/disconnected.

By default this receiver is disabled.

Returns the configuration as set by Set Sensor Connected Receiver Configuration.

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.

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:

  • PTC_V2BRICKLET_BOOTLOADER_MODE_BOOTLOADER
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE
  • PTC_V2BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_OK
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_INVALID_MODE
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_NO_CHANGE
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT
  • PTC_V2BRICKLET_BOOTLOADER_STATUS_CRC_MISMATCH

Returns the current bootloader mode, see Set Bootloader Mode.

Associated constants:

  • PTC_V2BRICKLET_BOOTLOADER_MODE_BOOTLOADER
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE
  • PTC_V2BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
  • PTC_V2BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT

Sets the firmware pointer for Write Firmware. 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.

Writes 64 Bytes of firmware at the position as written by Set Write Firmware Pointer 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.

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:

  • PTC_V2BRICKLET_STATUS_LED_CONFIG_OFF
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_ON
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

Returns the configuration as set by Set Status LED Config

Associated constants:

  • PTC_V2BRICKLET_STATUS_LED_CONFIG_OFF
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_ON
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
  • PTC_V2BRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

Returns the temperature in °C 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.

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!

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.

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

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. |device_identifier_constant|

Trait Implementations

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