Introduction

A Go implementation of the Futaba S.Bus protocol, AKA SBUS.

Package sbus offers marshalling (serialization) and unmarshalling of the Futaba S.Bus digital servo serial protocol

SBUS Protocol

The protocol is used for controlling digital servos for building hobby projects, radio-controlled airplanes, cameras, robots, quadcopters, and drones.

Examples

ExampleFrame() {
	// Create Frame with some data
	Frame := Frame{
		Ch: Channels{
			0x000, // Minumum channel value?
			0x000,
			0x7ff, // Maxiumum channel value
			0x000,
			0x000,
			0x000,
			0x000,
			0x400, // 0% channel value
			0x000,
			0x000,
			0x720, // 100% positive channel value
			0x000,
			0x000,
			0x0ff, // -100% channel value?
			0x000,
			0x000,
		},
	}

	// Update Frame data
	Frame.Flags = Flags{Ch17: true, Failsafe: true}

	// Marshal a Frame
	fmt.Printf("%b\n", Frame.Marshal())
	// Output: [1111 0 0 11000000 11111111 1 0 0 0 0 0 10000000 0 0 0 11001000 1 0 10000000 1111111 0 0 0 10010000 0]
}

func ExampleUnmarshalFrame() {
	// Create data
	data := [25]byte{0xf, 0xff, 0x7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10, 0}

	frame, err := UnmarshalFrame(data)
	if err != nil {
		panic(err)
	}
	// Marshal a Frame
	fmt.Println(frame)
	// Output: {[2047 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] {false false false true}}
}

Suggested reading

See this link dump for more.

If Go isn't the right language, there are many open-source implementations of the protocol in C++ and for Arduino: https://duckduckgo.com/?q=(parse+OR+decode)+SBUS]