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Multipoint firmware
User Manual
For use on the RFD x/ux/ux-SMT modems,
Multipoint Firmware versions 2.86+
Features
• Synchronous firmware for 2 or more
modems
• User settable data rates
• Diversity antenna support
www.rfdesign.com.au
RFDesign Pty Ltd
7/1 Stockwell Place
Archerfield, QLD 4108
rfdesign.com.au
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Summary of Contents for RFDesign RFD900x
- Page 1 User Manual For use on the RFD x/ux/ux-SMT modems, Multipoint Firmware versions 2.86+ Features • Synchronous firmware for 2 or more modems • User settable data rates • Diversity antenna support RFDesign Pty Ltd 7/1 Stockwell Place Archerfield, QLD 4108 rfdesign.com.au...
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Page 2: Table Of Contents
Multipoint Firmware User Manual www.rfdesign.com.au Table of contents Table of contents............................. 2 Introduction............................. 3 Software/GCS Support........................4 AT commands..........................5 Setting up data encryption...................... 9 Setting the air data rate......................9 Multipoint Network ........................10 Example network configurations...................10 64kbps Airspeed Networks........................ 11 Single network........................... -
Page 3: Introduction
This document describes the configuration of the Multipoint firmware. This firmware version is not loaded in the RFD900x radio modem by default. This means, you must download it from the website and flash it to the radio. The download link can be found in section “Useful links”. -
Page 4: Software/Gcs Support
Multipoint Firmware User Manual www.rfdesign.com.au 2 Software/GCS Support Multipoint firmware settings, other than master node settings, can be managed by the modem tools GUI. All settings can also be configured by AT commands. Default serial port settings are as follows: •... -
Page 5: At Commands
When you are successfully in the AT command mode, an ‘OK’ prompt will be displayed on the screen and the RFD900x modem will stop displaying incoming data from the remote modem. Whilst in command mode, you can use the AT commands to control the local RFD900x modem or the RT commands to control the remote modem(s). - Page 6 Multipoint Firmware User Manual www.rfdesign.com.au synchronising network). A is the start channel ID of the network (this also starts at 0 and can have values 0,7 or 13). B is the nodecount of the network (i.e. the number of nodes on the network including the master) Table 3-1: AT Commands and their description RT commands are terminal commands that take effect on a remote node.
- Page 7 Multipoint Firmware User Manual www.rfdesign.com.au RTI,2 Table 3-3 shows more details about the parameters that can be set in the RFD900x modem. Must be the S Register Default Maximum Minimum same at both Description Value Value Value ends of the...
- Page 8 Multipoint Firmware User Manual www.rfdesign.com.au Max transit window size used to limit max time/latency Encryption Level Encryption level 0=off, 1=128bit S16 – RESERVED n.a. Deprecated. No effect. ANT Mode Set antenna port function. 0= Diversity, 1=A1 only, 2=A2 only, 3= A1 TX and A2 RX GPIO1_3 STATLED Set GPIO 1.3 to behave the same as the...
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Page 9: Setting Up Data Encryption
Multipoint Firmware User Manual www.rfdesign.com.au The number of networks is based on channel separation requirements and will change based on frequency band and number of channels. Examples given in the example configurations. 3.1 Setting up data encryption The 128-bit AES data encryption may be set, enabled and disabled using the AT commands (see Table 2.1). -
Page 10: Multipoint Network
Multipoint Firmware User Manual www.rfdesign.com.au 4 Multipoint Network The multipoint firmware is not loaded on the modem by default and will need to be uploaded into all network modems. Check section “Useful links” for the download link and refer to section “RFD Modem Tools”... -
Page 11: 64Kbps Airspeed Networks
Multipoint Firmware User Manual www.rfdesign.com.au 64kbps Airspeed Networks Single network Parameter Value 922000 928000 Dependent on range and power requirements. Lower power will reduce range. Example setting for sending mavlink data Depends on the network structure. Master node must be set to broadcast (255). Other nodes may... -
Page 12: 125Kbps Airspeed Networks
Multipoint Firmware User Manual www.rfdesign.com.au NodeID 2 (aka GCS) Parameter Value NodeID 3 (aka Vehicle1) Parameter Value NodeID 4 (aka Vehicle2) Parameter Value Note that for the Master (Relay) only, the flow control is disabled. This node also requires that the RX and TX pin of the UART (pin 7 and 9) must be connected. -
Page 13: Maximum Number Of Nodes Per Network
Multipoint Firmware User Manual www.rfdesign.com.au Maximum number of nodes per network The maximum number of nodes that can be used on a network is determined by the total throughput, related to the airspeed minus overheads etc., and the required node throughput, recommended to be at least 12-14kbps for basic mavlink telemetry. - Page 14 Multipoint Firmware User Manual www.rfdesign.com.au Note: These are theoretical values and have not been fully verified as working networks. A tested network example is given below using the 125kbps airspeed example basic settings. The NetworkIDs values are 0,7 and 13 so:...
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Page 15: Useful Links
Multipoint Firmware User Manual www.rfdesign.com.au 5 Useful links RDF900x/ux and RFD868x/ux modem Firmware The firmware is the same for both the 868x/900x modems and can be found at. http://files.rfdesign.com.au/firmware/ RFD TOOLS http://files.rfdesign.com.au/tools/ Documentation (including FAQ) http://files.rfdesign.com.au/docs/ Store http://store.rfdesign.com.au FTDI Cable documentation http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf...
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