Creating example GNSS application - DMU801

DMU801 Time Synchronization Management Guide
Product status
Document code
M213266EN
Revision
B
ft:locale
en-US
Product
DMU801
Document type
User guide
Add a new GNSS device to the application and configure it.
  1. In the KaikuWeb UI Settings > Date and time view, select GNSS/NMEA as External time source, if not already selected.
  2. To save the changes, select Save.
  3. Open Kaiku Designer.
  4. To add a new component, go to Application > Editor, and select Add component.
  5. Select other i/o as the component role and gnss_device as the component.
  6. Configure the following settings for the gnss_device component:
    Port

    Select the serial port to which GNSS device is connected.

    Note that DMU801 supports autobauding, that is, it automatically detects serial port settings related to external GNSS device.

    Device name
    Give the device name (optional). This can help identify the device for user interface and diagnostics purposes.
    Nominal transmit interval

    Define how often GNSS time messages (for example, xxRMC) are expected from the GNSS device. Set the value to match the actual message interval of your device. For most setups, 1–10 seconds is recommended unless your application requires more frequent updates. If your device sends messages more frequently than needed, use a longer interval to reduce CPU load.

    This interval is also used to detect signal loss. Setting it much shorter than the actual transmit rate of the device may cause false signal loss alarms.

  7. To save the changes, select Apply.
  8. To show the sensor data in the Measurements view of Kaiku Web UI, add a new webui_stream component.
  9. Configure the following settings for the webui_stream component:
    Edit sensor view
    Add a view for the GNSS device.
    Show sensor status from
    Select the gnss_device component.
    Add new input
    Add the inputs you want to be shown in the Web UI. Modify or select the Parameter, Statistics, Period, and Unit for each component.
  10. To save the changes, select Apply.
  11. To receive debug information to the Device console, add a new log_values component.
  12. Configure the following settings for the log_values component:
    Variables > Source
    Select the component.
    Obs
    Add the observation values you want to be printed in Device console. To print all observations that the component provides, type an asterisk (*).
  13. To save the changes, select Apply.
  14. To upload the application to DMU801, select Upload to device.