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RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-MD2 Engineering Sample | data sheet

07/2018 – Revision A | Page 16/23

INSTRUCTION SET DESCRIPTION

Application Layer

Client-Server

The communication is based on a client-server

model. There are two types of packets transmitted.

Commands are sent from client to server and messa-

ges are sent from server to client.

Presentation Layer

All commands and messages sent have the format

described in table x.

Description

Datatype

Length

Header

The header describes the command or

message type (e.g. RADC, RMRD, …)

ASCII character

4

Payload Length

The payload length is always sent even if

the payload is zero. It is sent as little endian

(LSB first).

UINT32

4

Payload

The payload is message and command

dependent. If the payload includes datatypes

(e.g. UINT16, INT32, …) then they are sent

as little endian (LSB first). This data is typical-

ly padded to a multiple of 4 bytes.

Binary data

4

Table 8: Packet format

Server

(Radar)

Client

(PC)

Server

(Radar)

Client

(PC)

Command

Message

Server

(Radar)

Client

(PC)

Frame 1 (8 Byte data)

Frame 2 (8 Byte data)

Frame 3 (8 Byte data)

Frame 4 (8 Byte data)

Radar

PC

INIT

DONE (frame 0)

GBYE

GBYE

Frame

acquisition

Connection

Start handshaking

Disconnection

End handshaking

Connected

Server

(Radar)

Client

(PC)

DONE ( frame n)

DONE ( frame n + 1)

PDAT

TDAT

PDAT

TDAT

Frame

acquisition

Frame

acquisition

Power on

Boot loader

wait time = 3 s

Boot loader

active

Application

active

Jump to

application

Jump to

application

INIT

Radar

PC

BOOT

FILE

GBYE

Power on

Boot loader

wait time = 3 s

Boot loader

active

Application

active

Stay in

boot loader

INIT

Radar

PC

BOOT

FILE

ERRO

Power on

Boot loader

wait time = 3 s

Boot loader

active

Stay in

boot loader

…

Server

(Radar)

Client

(PC)

Server

(Radar)

Client

(PC)

Command

Message

Server

(Radar)

Client

(PC)

Frame 1 (8 Byte data)

Frame 2 (8 Byte data)

Frame 3 (8 Byte data)

Frame 4 (8 Byte data)

Radar

PC

INIT

DONE (frame 0)

GBYE

GBYE

Frame

acquisition

Connection

Start handshaking

Disconnection

End handshaking

Connected

Server

(Radar)

Client

(PC)

DONE ( frame n)

DONE ( frame n + 1)

PDAT

TDAT

PDAT

TDAT

Frame

acquisition

Frame

acquisition

Power on

Boot loader

wait time = 3 s

Boot loader

active

Application

active

Jump to

application

Jump to

application

INIT

Radar

PC

BOOT

FILE

GBYE

Power on

Boot loader

wait time = 3 s

Boot loader

active

Application

active

Stay in

boot loader

INIT

Radar

PC

BOOT

FILE

ERRO

Power on

Boot loader

wait time = 3 s

Boot loader

active

Stay in

boot loader

…

Figure 13: Client-Server model

Figure 14: Cyclic message output

Overview Messages and Commands

The server acquires frames in a fixed cycle of 50 ms.

After every frame cycle it outputs all enabled mes-

sages. The messages DONE, PDAT and TDAT are

enabled by default.

The table x shows the possible messages – see the

chapter ‘Messages’ for details.

Header

Payload

Length

Description

DONE

0

Frame done

RADC

786432

Raw ADC values

RMRD

262144

Mean range-doppler map

PDAT

0-2400

The array of detected raw targets

TDAT

0-8800

The array of tracked targets

RPRM

12

Radar parameter structure

PPRM

56

Processor parameter structure

GBYE

0

Indicates that the sensor server exits

Table 9: Application messages