pub struct GpsV2Bricklet { /* private fields */ }
Expand description

Determine position, velocity and altitude using GPS

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 precisely once per second, see PPS__.

The precision of two subsequent pulses will be skewed because of the latency in the USB/RS485/Ethernet connection. But in the long run this will be very precise. For example a count of 3600 pulses will take exactly 1 hour.

This receiver is triggered periodically with the period that is set by set_coordinates_callback_period. The parameters are the same as for get_coordinates.

The get_coordinates_callback_receiver receiver is only triggered if the coordinates changed since the last triggering and if there is currently a fix as indicated by get_status.

This receiver is triggered periodically with the period that is set by set_status_callback_period. The parameters are the same as for get_status.

The get_status_callback_receiver receiver is only triggered if the status changed since the last triggering.

This receiver is triggered periodically with the period that is set by set_altitude_callback_period. The parameters are the same as for get_altitude.

The get_altitude_callback_receiver receiver is only triggered if the altitude changed since the last triggering and if there is currently a fix as indicated by get_status.

This receiver is triggered periodically with the period that is set by set_motion_callback_period. The parameters are the same as for get_motion.

The get_motion_callback_receiver receiver is only triggered if the motion changed since the last triggering and if there is currently a fix as indicated by get_status.

This receiver is triggered periodically with the period that is set by set_date_time_callback_period. The parameters are the same as for get_date_time.

The get_date_time_callback_receiver receiver is only triggered if the date or time changed since the last triggering.

Returns the GPS coordinates. Latitude and longitude are given in the DD.dddddd° format, the value 57123468 means 57.123468°. The parameter ns and ew are the cardinal directions for latitude and longitude. Possible values for ns and ew are ‘N’, ‘S’, ‘E’ and ‘W’ (north, south, east and west).

This data is only valid if there is currently a fix as indicated by get_status.

Returns if a fix is currently available as well as the, the number of satellites that are in view.

There is also a green LED on the Bricklet that indicates the fix status.

Returns the current altitude and corresponding geoidal separation.

Both values are given in cm.

This data is only valid if there is currently a fix as indicated by get_status.

Returns the current course and speed. Course is given in hundredths degree and speed is given in hundredths km/h. A course of 0° means the Bricklet is traveling north bound and 90° means it is traveling east bound.

Please note that this only returns useful values if an actual movement is present.

This data is only valid if there is currently a fix as indicated by get_status.

Returns the current date and time. The date is given in the format ddmmyy and the time is given in the format hhmmss.sss. For example, 140713 means 14.05.13 as date and 195923568 means 19:59:23.568 as time.

Restarts the GPS Bricklet, the following restart types are available:

ValueDescription
0Hot start (use all available data in the NV store)
1Warm start (don’t use ephemeris at restart)
2Cold start (don’t use time
3Factory reset (clear all system/user configurations at restart)

Associated constants:

  • GPS_V2_BRICKLET_RESTART_TYPE_HOT_START
  • GPS_V2_BRICKLET_RESTART_TYPE_WARM_START
  • GPS_V2_BRICKLET_RESTART_TYPE_COLD_START
  • GPS_V2_BRICKLET_RESTART_TYPE_FACTORY_RESET

Returns the

  • satellite numbers list (up to 12 items)
  • fix value,
  • PDOP value,
  • HDOP value and
  • VDOP value

for a given satellite system. Currently GPS and GLONASS are supported, Galileo is not yet supported.

The GPS and GLONASS satellites have unique numbers and the satellite list gives the numbers of the satellites that are currently utilized. The number 0 is not a valid satellite number and can be ignored in the list.

Associated constants:

  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GPS
  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GLONASS
  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GALILEO
  • GPS_V2_BRICKLET_FIX_NO_FIX
  • GPS_V2_BRICKLET_FIX_2D_FIX
  • GPS_V2_BRICKLET_FIX_3D_FIX

Returns the

  • satellite numbers list (up to 12 items)
  • fix value,
  • PDOP value,
  • HDOP value and
  • VDOP value

for a given satellite system. Currently GPS and GLONASS are supported, Galileo is not yet supported.

The GPS and GLONASS satellites have unique numbers and the satellite list gives the numbers of the satellites that are currently utilized. The number 0 is not a valid satellite number and can be ignored in the list.

Returns the current

  • elevation (0° - 90°),
  • azimuth (0° - 359°) and
  • SNR (0dB - 99dB)

for a given satellite and satellite system.

The satellite number here always goes from 1 to 32. For GLONASS it corresponds to the satellites 65-96.

Galileo is not yet supported.

Associated constants:

  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GPS
  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GLONASS
  • GPS_V2_BRICKLET_SATELLITE_SYSTEM_GALILEO

Sets the fix LED configuration. By default the LED shows if the Bricklet got a GPS fix yet. If a fix is established the LED turns on. If there is no fix then the LED is turned off.

You can also turn the LED permanently on/off, show a heartbeat or let it blink in sync with the PPS (pulse per second) output of the GPS module.

If the Bricklet is in bootloader mode, the LED is off.

Associated constants:

  • GPS_V2_BRICKLET_FIX_LED_CONFIG_OFF
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_ON
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_HEARTBEAT
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_FIX
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_PPS

Returns the configuration as set by set_fix_led_config

Associated constants:

  • GPS_V2_BRICKLET_FIX_LED_CONFIG_OFF
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_ON
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_HEARTBEAT
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_FIX
  • GPS_V2_BRICKLET_FIX_LED_CONFIG_SHOW_PPS

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

The get_coordinates_callback_receiver receiver is only triggered if the coordinates changed since the last triggering.

The default value is 0.

Returns the period as set by set_coordinates_callback_period.

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

The get_status_callback_receiver receiver is only triggered if the status changed since the last triggering.

The default value is 0.

Returns the period as set by set_status_callback_period.

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

The get_altitude_callback_receiver receiver is only triggered if the altitude changed since the last triggering.

The default value is 0.

Returns the period as set by set_altitude_callback_period.

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

The get_motion_callback_receiver receiver is only triggered if the motion changed since the last triggering.

The default value is 0.

Returns the period as set by set_motion_callback_period.

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

The get_date_time_callback_receiver receiver is only triggered if the date or time changed since the last triggering.

The default value is 0.

Returns the period as set by set_date_time_callback_period.

If SBAS__ is enabled, the position accuracy increases (if SBAS satellites are in view), but the update rate is limited to 5Hz. With SBAS disabled the update rate is increased to 10Hz.

By default SBAS is enabled and the update rate is 5Hz.

.. versionadded:: 2.0.2$nbsp;(Plugin)

Associated constants:

  • GPS_V2_BRICKLET_SBAS_ENABLED
  • GPS_V2_BRICKLET_SBAS_DISABLED

Returns the SBAS configuration as set by set_sbas_config

.. versionadded:: 2.0.2$nbsp;(Plugin)

Associated constants:

  • GPS_V2_BRICKLET_SBAS_ENABLED
  • GPS_V2_BRICKLET_SBAS_DISABLED

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:

  • GPS_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_OK
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_INVALID_MODE
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_NO_CHANGE
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT
  • GPS_V2_BRICKLET_BOOTLOADER_STATUS_CRC_MISMATCH

Returns the current bootloader mode, see set_bootloader_mode.

Associated constants:

  • GPS_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
  • GPS_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
  • GPS_V2_BRICKLET_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:

  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_OFF
  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_ON
  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

Returns the configuration as set by set_status_led_config

Associated constants:

  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_OFF
  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_ON
  • GPS_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
  • GPS_V2_BRICKLET_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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