background image

 

3

Figure 2:  Layout of the LEDs on the radio base station.

Description of the several LED indicators:

Rx 

Receive RS232 data (data transfer from host to base station)

Tx

Transmit RS232 data (data transfer from base station to host)

CTS

Clear To Send of the host (indication from the radio base sta-
tion to the host computer that the radio is ready to send).

RTS

Request To Send of the host (indication from the host com-
puter to the radio base that the computer is ready to send).

Alive

Shows that the station is active (blinking at 2 Hz).

Sys: Reserved.

CD: 

Carrier detect. When ON, the turret is detecting an active
radio channel.

RxHF:  Receive radio data (data transfer from a radio turret to the

base station)

TxHF: 

Transmit radio data (data transfer from the base station to a
radio turret)

The communication between the radio base and the host computer is made

by a RS232 serial link configured at 

 

9600 baud, 8 data bits, 1 start bit, 2 stop bits, no

parity and hardware flow control with RTS and CTS signals

 

.

 

4.2

Introduction to the Khepera communication structure

 

This section explains the Khepera BIOS communication structure. This structure

explains also how the radio base station can be used.

On Khepera, the SerCom protocol, which implements the standard RS232 protocol

used to control Khepera remotely, is based on the COM (communication) module of the

TEAM

K-Team S.A.

Chemin de Vuasset

1028 PrŽverenges

Switzerland

Radio base unit

Rx

CD

RxHF

TxHF

Tx

CTS

RTS

Alive

Sys

Содержание Radio Base

Страница 1: ...Lausanne 29 November 1999 K Team S A Khepera RADIO BASE USER MANUAL Version 1 0...

Страница 2: ...e Corp SUN Sparc Station SUN Microsystems Corp LabVIEW National Instruments Corp Khepera K Team NOTICE The contents of this manual are subject to change without notice All efforts have been made to en...

Страница 3: ...o Base Station 2 Overview 2 Introduction to the Khepera communication structure 3 Radio network and turret ID 4 Radio properties and correct data transmission 5 Connections 6 Using LabVIEW 8 Set up of...

Страница 4: ...if you use the software LabVIEW The appendix can be referred to as necessary Chapter 1 gives you a general introduction Chapter 2 describes some important warnings Chapter 3 explains the contents of...

Страница 5: ...se station equipped with an antenna A power supply 4 THE RADIO BASE STATION 4 1 Overview Figure 1 Overview of the turret layout Make an external inspection of the turret Note the location of the follo...

Страница 6: ...e radio data data transfer from a radio turret to the base station TxHF Transmit radio data data transfer from the base station to a radio turret The communication between the radio base and the host...

Страница 7: ...e details Figure 3 Communication channels in the Khepera BIOS structure If the radio turret is set as main communication channel all messages of the Ser Com protocol are sent and received on the radio...

Страница 8: ...a has to be transmitted the state changes and the data is transmitted The state of the radio module is visualized on the RxHF radio receive and on the TxHF radio transmit LEDs The data transmitted on...

Страница 9: ...s configuration allows the communication between the robot and a host compu ter through the radio link On the host computer side the link is made by a RS232 line and the radio base station On the Khep...

Страница 10: ...to get the connection with robot with radio ID 1 Switch the Khepera robot ON batteries or power supply or if it is already connected reset the robot pressing on the reset button Your terminal should d...

Страница 11: ...5 LabVIEW runs on your PC Macintosh or SUN worksta tions and can control the functionality of the Khepera robot using the SerCom serial communication protocol 6 1 Set up of the serial link Set your e...

Страница 12: ...de by the Set_channel VI If you open it the panel illustrated in figure 8 should appear Figure 8 Set_channel panel for selection of the robot you want to communicate with Now select the robot you want...

Страница 13: ...e sliders and their names Possible values are constrained only on the sliders between 20 and 20 so to take care of the mechanics To transmit your order to the robot just click once on the arrow You ca...

Страница 14: ...ication channel to communicate with the Khepera equipped with the radio turret with ID ID_destination The radio turret ID has to be selected on the radio turret switches Every string sent to the RS232...

Страница 15: ...12...

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