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Copy file name to clipboardExpand all lines: docs/configure_with_serial.md
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!!! note
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Any serial menu that is shown below can also be accessed over Bluetooth. This makes any configuration of a device much easier in the field. Please see [Configure With Bluetooth](configure_with_bluetooth.md) for more information.
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To configure an RTK device using serial attach a [USB C cable](https://www.sparkfun.com/products/15425) to the device.
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## USB Connection
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## RTK Torch
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<figuremarkdown>
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<figcaptionmarkdown>
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The Main Menu
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</figcaption>
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</figure>
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To configure an RTK device using serial attach a [USB C cable](https://www.sparkfun.com/products/25630) to the device. Any USB C cable should work. Connect your device to a computer and you should see a Serial port appear. Open this port at 115200bps using your favorite terminal program and press any key to open the Main Menu.
The connector labeled **CONFIG ESP32** is used for Serial Configuration. For an in depth review of the EVK hardware, please see the [SparkFun RTK EVK Hookup Guide](https://docs.sparkfun.com/SparkFun_RTK_EVK/hardware_overview/).
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<figcaptionmarkdown>
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SparkFun RTK Postcard serial channels
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</figcaption>
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</figure>
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The DATA port on the RTK Postcard is the USB C connector. This connection creates two serial ports. **SERIAL-A** is used for [Serial Configuration](configure_with_serial.md). **SERIAL-B** is connected to the DATA port of the LG290P to receive NMEA and other data directly. The DATA port is also used for [updating the firmware](firmware_update_lg290p.md) on the LG290P.
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### RTK Torch
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<figuremarkdown>
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[](./img/RTK-Torch_Buttons_Back.png)
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<figcaptionmarkdown>
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The USB Connector on the RTK Torch
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Pull back the silicone cover and insert a USB C and power on the device. Once the device is powered on, open the `Device Manager` in Windows and look under the Ports branch to see what COM port the device is assigned to.
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<figuremarkdown>
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SparkFun RTK Torch Two Enumerated Ports
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Note that some Windows terminal programs (e.g. Tera Term) may reboot the RTK device when the terminal connection is closed. You can disconnect the USB cable first to prevent this from happening.
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<figuremarkdown>
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The Main Menu
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</figcaption>
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The menus will timeout after 10 minutes of inactivity, so if you do not press a key the device will exit the menu and return to reporting status messages.
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<figuremarkdown>
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Copy file name to clipboardExpand all lines: docs/menu_gnss.md
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</div>
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The SparkFun RTK product line is immensely configurable. The RTK device will, by default, put the GNSS receiver into the most common configuration for rover/base RTK for use with *SW Maps* and other GIS applications.
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The SparkFun RTK product line is immensely configurable. The RTK device will, by default, put the GNSS receiver into the most common configuration for rover/base RTK for use with most GIS applications.
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The GNSS Configuration menu allows a user to change the report rate, dynamic model, and select which constellations should be used for fix calculations.
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- EVK: :material-radiobox-blank:{ .support-none title="Feature Not Supported" }
Copy file name to clipboardExpand all lines: docs/menu_ports.md
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<figuremarkdown>
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Setting the baud rates of the two available external ports
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</figcaption>
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<figcaptionmarkdown>
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Baud rate configuration of Radio and Data ports
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Baud rate configuration of the RADIO and DATA ports
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</figcaption>
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</figure>
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* The RTK Postcard has both RADIO and DATA ports.
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* The RTK EVK has only a RADIO port.
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RADIO and DATA ports on the RTK Postacrd
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## Radio Port
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Available on devices that have an external **RADIO** port.
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The **RADIO** port is connected directly to GNSS UART. Depending on the platform, the port is set to 57600bps to match the [Serial Telemetry Radios](https://www.sparkfun.com/products/19032) that are recommended to be used with the RTK Facet (it is a plug-and-play solution). This can be set from 4800bps to 921600bps.
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The **RADIO** port is connected directly to a UART on the GNSS receiver allowing output of NMEA or RTCM, and receiving RTCM corrections. Depending on the platform, the port is set to 57600bps to match the [Serial Telemetry Radios](https://www.sparkfun.com/products/19032) that are recommended to be used with the RTK Facet (it is a plug-and-play solution). This can be set from 4800bps to 921600bps.
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The default for the RTK Postcard is 115200bps.
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The default RADIO baud rate for the RTK Postcard is 115200bps.
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## Data Port
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</figcaption>
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</figure>
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The **DATA** port can be configured from 4800bps to 921600bps. The default depends on the GNSS model: e.g. 460800bps on LG290P, 230400 on other models. The default rate was chosen to support applications where a large number of messages are enabled and a large amount of data is sent. If you need to decrease the baud rate to 115200bps or other on the ZED-F9P, be sure to monitor the MON-COMM message within u-center for buffer overruns. A baud rate of 115200bps and the NMEA+RXM default configuration at 4Hz *will* cause buffer overruns.
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The **DATA** port can be configured from 4800bps to 921600bps. The default depends on the GNSS model: e.g. 460800bps on LG290P, 230400bps on other models. The default rate was chosen to support applications where a large number of messages are enabled and a large amount of data is sent. If you need to decrease the baud rate to 115200bps or other on the ZED-F9P, be sure to monitor the MON-COMM message within u-center for buffer overruns. A baud rate of 115200bps and the NMEA+RXM default configuration at 4Hz *will* cause buffer overruns.
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<figuremarkdown>
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### Postcard USB Ports
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RADIO and DATA ports on the RTK Postacrd
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</figcaption>
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</figure>
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The DATA port on the RTK Postcard is the USB C connector. This connection creates two serial ports. **SERIAL-A** is used for Serial Configuration.**SERIAL-B** is connected to the DATA port of the LG290P to receive NMEA and other data directly.
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The DATA port on the RTK Postcard is the USB C connector. This connection creates two serial ports. **SERIAL-A** is used for [Serial Configuration](configure_with_serial.md).**SERIAL-B** is connected to the DATA port of the LG290P to receive NMEA and other data directly. The DATA port is also used for [updating the firmware](firmware_update_lg290p.md) on the LG290P.
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## Output GNSS Data over USB
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## Limit RADIO Port Output to RTCM
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Enabling this option will turn off all data output except for the minimum RTCM messages necessary for RTK work. This is helpful in situations where a telemetry radio is used for connecting a Rover to a Base. Extra NMEA and binary data can tax a radio link and may cause the link to become intermittent or fail.
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Enabling this option will turn off all data output to the RADIO port except for the minimum RTCM messages necessary for RTK work. This is helpful in situations where a telemetry radio is used for connecting a Rover to a Base. Extra NMEA and binary data can tax a radio link and may cause the link to become intermittent or fail.
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## Allow Incoming Corrections on COM/UART
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Disable this to block corrections on the given port.
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Disable this feature to block corrections on the given port.
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If a GNSS receiver gets corrections from multiple sources (WiFi, Bluetooth, serial, etc) it can lead to unpredictable outcomes. To avoid this, RTK Everywhere firmware includes a sophisticated 'corrections controller' to give priority to the various sources, discarding any lower priority corrections sources that are detected. See the [Corrections Priority](menu_corrections_priorities.md) section for more information. Because the RTK Everywhere firmware cannot directly filter out corrections from a direct serial connection, this option allows a user to disable that correction source directly.
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If a GNSS receiver gets corrections from multiple sources (WiFi, Bluetooth, serial, etc) it can lead to unpredictable outcomes. To avoid this, RTK Everywhere firmware includes a sophisticated 'corrections controller' to give priority to the various sources, discarding any lower priority corrections sources that are detected. See the [Corrections Priority](menu_corrections_priorities.md) section for more information. Because the RTK Everywhere firmware cannot filter out corrections from a serial connection, this option allows a user to disable that correction source that may .
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