Docs Center

English

简体中文

English

简体中文

Theme

Telemetry Link and MAVLink ​

TIP

MAVLink is the protocol unmanned systems use to talk to a ground station. This page covers setting up the link (radio telemetry, network, USB) and the MAVLink parameters.

Overview ​

CUAV® controllers talk to a ground station (Mission Planner, QGC or LGC) over a serial port (TELEM1/TELEM2), the network (ETH) or USB. Everything they exchange runs on MAVLink.

Serial ​

  • SERIAL0: console, which is USB.
  • SERIAL1: Telemetry1.
  • SERIAL2: Telemetry2.
  • SERIALx_PROTOCOL: the protocol on that port (1 = MAVLink1, 2 = MAVLink2, 5 = MAVLink2, and so on).

Network ​

  • The controller can reach a ground station over its Ethernet port.
  • Set up a network serial or UDP connection in Mission Planner with the right IP and port.
  • See Ethernet configuration.
  • SERIALx_BAUD: serial baud rate.
  • SERIALx_OPTIONS: extra serial options, such as flow control.
  • SYSID_THISMAV: this vehicle's system ID.
  • MAV_COMP_ID: component ID.

NOTE

MAVLink2 gives you more — message signing and larger payloads among them. On long-range links, drop the baud rate or use a more robust encoding.

More tutorials ​