Adeunis RF ARF54 User manual

A
RF54 UART TTL modules
User Guide
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No part of this document may be reproduced or transmitted (in electronic or
paper version, photocopy) without Adeunis RF consent.
This document is subject to change without notice.
All trademarks mentioned in this guide are the property of their respective
owner.
ADEUNIS RF
283, rue Louis Néel
38920 Crolles
France
Phone [phone]
Fax [phone]
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RF54
User Guide
Table of Contents
Table of Contents.............................................................................................1
About this Document........................................................................................2
Declaration of Conformity ...............................................................................3
Overview..........................................................................................................4
Interface ..........................................................................................................4
Mechanical specification....................................................................................... 4
Signal description................................................................................................ 6
General purpose I/O extended functionality.......................................................... 7
Radio communication.....................................................................................10
Radio communication .........................................................................................10
Radio channels...................................................................................................10
Channel adjustment ...........................................................................................11
Radio rate selection............................................................................................11
Channel rejection..............................................................................................11
RSSI reading......................................................................................................12
Transceiver operating mode...........................................................................13
Command mode.................................................................................................13
Transceiver mode...............................................................................................14
Transparent mode..............................................................................................15
Addressed mode ................................................................................................15
Transceiver state machine ..................................................................................15
AT COMMANDS...............................................................................................16
Description ........................................................................................................16
Set of commands...............................................................................................17
Register description............................................................................................18
Power management (standby mode and low power mode)...................................22
Specifications.................................................................................................24
Glossary .........................................................................................................25
ANNEX 1 : Alternative mounting ....................................................................25
ANNEX 2 : Firmware updates .........................................................................26
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A
RF54
User Guide
About this Document
This guide describes the A
RF54
devices, their options and accessories.
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RF54
User Guide
Declaration of Conformity
Manufacturer’s name: ADEUNIS R.F.
Manufacturer’s address Parc Technologique PRE ROUX IV
283 rue Louis NEEL
38920 CROLLES - FRANCE
declares that the product if used and installed according to the user guide available on
our web site www.adeunis-rf.com
Product Name: ARF54
Product Number(s): ARF7429A
is designed to comply with the RTTE Directive 99/5/EC:
EMC: according to the harmonized standard EN 301 489.
Safety: according to the standard EN 60950-1/2001
Radio: according to harmonized standard EN 300-220 covering essential
radio requirements of the RTTE directive.
Notes: - Conformity has been evaluated according to the procedure
described in Annex III of the RTTE directive.
- Receiver class (if applicable): 3.
According to the 1999/519/EC recommendation, minimum distance between the product
and the body could be required depending on the module integration.
Warnings: - CE marking applies only to End Products: Because this equipment is only a
subassembly, conformity testing has been reduced (equipment has been design in
accordance to standards but full testing is impossible). Manufacturer of End Products,
based on such a solution, has to insure full conformity to be able to CE label marking.
- As the integration of a radio module requires wireless technological
knowledge, ADEUNIS RF proposes its technical proficiency to its customers for a pre-
compliance qualification of end products. In case of no-conformity, ADEUNIS RF will not
be held back responsible if this stage has not been realised.
Crolles, November 6th, 2007
VINCENT Hervé / Quality manager
Download of the user guide
Thank you for having chosen the ADEUNIS RF products.
NOTA : this product is set up in Narrow Band (channel 19) to optimize the range. The
radio data rate is then limited to 10 kBps. To modify these parameters thank you to
apply the instructions mentioned on the user guide downloadable on our web site
www.adeunis-rf.com
Index Products
Paragraph OEM Modules > Transceivers with µC
Print version available upon request
9Tel : [phone]
9Email : [email protected]
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RF54
User Guide
Overview
The ARF54 radio transceiver converts data from a serial link into a radio
frame to be sent to a similar piece of equipment. The communication is
half-duplex.
The operating parameters of these radio transceivers (serial link, radio
management…) can be fully updated through AT commands via the serial
link.
Interface
Mechanical specification
The transceiver is available in only one format: plugged module without
antenna.
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RF54
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The PCB width is 12/10 mm
Figure 1: Plugged module mechanical feature
This module has been designed to be plugged (as describe above). If this
assembly doesn’t suit your requirement, please have a look to Annex 1
(mainly for horizontal mounting).
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RF54
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Signal description
Inter-
face
Pin Name I/O Description Alternate
function
Digital interface
1 GND Ground
2 VDD Operating voltage
8 TXD O Serial data transmission
7 RXD I Serial data reception
3 /RTS
O Request To Send
RTS = GND, the transceiver is able to
receive serial data
RTS = VDD, serial data received by
the transceiver are lost
10 /RESET I Transceiver Hardware RESET, active LOW.
5 PWD I Power down management
16 GPIO1 /
PC0 I/O Extended general purpose I/O
13 GPIO2 /
PC1 I/O Extended general purpose I/O RS485
14 GPIO3 /
PC2 I/O Extended general purpose I/O
11 GPIO4 /
PC3 I/O Extended general purpose I/O RS485
12 GPIO5 /
PC4 I/O Extended general purpose I/O RS485
9 GPIO6 /
PC5 I/O Extended general purpose I/O or I (input only for the American version)
6 GPIO7 /
PD5 I/O Extended general purpose I/O RS485
15 GPIO8 /
ADC7 ADC Analog to digital conversion
17, 18 GND Ground
RF interface
19, 20 GND RF RF antenna ground
21, 22 RF
in/out RF antenna IN/OUT.
23, 24 GND RF RF antenna ground.
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RF54
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Description Min Max Unit
Vil1 Input low voltage except
/RESET -0.5 0.3VDD V
Vih1 Input High voltage except
/RESET 0.6VDD VDD+0.5 V
Vil2 /RESET Input low voltage -0.5 0.2VDD V
Vih2 /RESET Input High voltage 0.9VDD VDD+0.5 V
/RESET pulse width 2.5 - µs
General purpose I/O extended functionality
RS485 interface
The S215 register allows enabling the management of the control lines (/RE
and DE lines) of most RS485 buffer. The following figures illustrate the RS485
wiring and the configuration required for activating the DE and /RE
management. Even one line is sufficient, for more flexibility two different lines
could managed the DE and RE RS485 control lines. Hereafter a connection
example with both lines or one line only.
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Ref. 08-07-V6-lmn p. 8
CAUTION
•the /ENABLE485 is read ONLY at power-up. Changing the
/ENABLE485 (GPIO7) when the transceiver is already running
will not be taken in account.
•when activating the RS485 interface the GPIO5 will be set as an
output.
215
Value /ENABLE 485
(GPIO7)
DE/RE
state Note GPI O2 GPI O4 GPI O5 GPI O7
1 GND Output RS485 control lines
management Outp ut Outp ut Outp ut Input
1 VDD Input RS232 configuration Input Input Input Input
0 Input Input RS232 configuration Input Input Input Input
Table
1: R485/232 configuration settings
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RF54
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By default, the DE and RE lines are asserted LOW, allowing the reception of
characters from the RS485 differential bus. The DE and RE lines are asserted
HIGH only when one or several characters have to be transmitted over the
RS485 differential bus: when a radio frame is demodulated, the lines are
asserted HIGH and then the data extracted from the radio frame are sent to
the module TXD line and therefore to the RS485 differential bus. When the
last character has been transmitted over the RS485 differential bus, the lines
are asserted LOW.
TXD n DATA bytes
Tde Thold
DE/RE
Figure 2: DE/RE timing when data are sent over the serial link
•Thold : minimum = 1 µs
•Tde : set according to the S219 register value (see table
hereafter)
S219 0 1 2 3 4 5 10 20 40 60 80
Tde
min 15 µs 35 µs 65 µs 135 µs 150 µs 190 µs 330 µs 600 µs 1.1 ms 1.7 ms 2.3 ms
•In command mode, when a reply is sent back (on the TXD line)
according to the following DE/RE timing :
RXD CMD
TXD REPLY
≥700 µS
≥100µs
≥100µs
DE/RE
RXD CMD
Figure 3: DE/RE timing when a reply is sent back on the TXD line
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RF54
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Radio communication
Radio communication
869 MHz version
This modem has several channels over the 863-870 MHz Band that can be
selected using AT commands, distributed in Wide Band and Narrow Band.
Wide Band channel :
•1 Wide Band channels
•57.6 kbit/s “air rate”
•channel spacing: 500 kHz
•Sensitivity: - 105 dBm
•Adjacent channel rejection: see chapter “Channel rejection”
Narrow Band channel :
•3 Narrow Band channels
•10 kbit/s “air rate”
•channel spacing: 100 kHz
•Sensitivity: - 110 dBm
•Adjacent channel rejection:
see chapter “Channel rejection”
This module is designed to operate according to CEPT/ERC/REC 70-03
recommendation. This recommendation has been drawn up by the European
Radio communications Committee (ERC) under CEPT.
Radio channels
869 MHz version
The Wide Band channel are selected according to the following table:
Channel
S200 Frequency (MHz)
1 869,525
Figure 4: Wide band channels
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RF54
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The 3 Narrow Band channels are selected according to the following table :
Channel
S200 Frequency (MHz)
19 869,450
84 869,525
85 869,600
Figure 5: Narrow Band channels
Channel adjustment
The S200 register allows choosing the desired channel and the associated
radio rate (
see chapter “AT commands” )
Radio rate selection
For 869 MHz version, the Radio rate selection is automatically done when
setting the channel number:
If you choose a channel number ≥14 (Narrow Band), the radio rate will
automatically switch to 10 kbit/s.
If you choose a channel number < 14, the module will operate in the Wide
Band configuration. The radio rate will switch automatically to 57600 bit/s.
Channel rejection
The graph below shows the typical channels rejection in WideBand (WB) and
NarrowBand (NB) modes.
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10
20
30
40
50
60
70
80
-2000 -1750 -1500 -1250 -1000 -750 -500 -250 0 250 500 750 1000 1250 1500 1750 2000
frequency step / Fchannel (kHz)
rejection (dB)
WB
NB
Particular attention is required for product installation. In the case where
several links must works in the same area (independently of the channel
positions), the minimum distance between 2 products belonging to different
radio links is 3 meters. Even with this precaution (depending of the product
environment), channel rejection could be reduced.
RSSI reading
The RSSI (Received Strength Signal Indicator) gives an indication for the
received power level.
It could be accessed with AT commands (ATS230?<cr> command).
•The RSSI level is only an indication. Use this level with care due to
the dispersion between components.
•The operating temperature could also have an impact on these
dispersions.
•The RSSI level could also indicate the potential presence of any
jammer in the used channel.
•The RSSI is a necessary but not sufficient condition to
obtain a correct reception.
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RF54
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Transceiver operating mode
Two operating modes are available :
1. Command mode (usage of AT commands)
2. Transceiver or normal mode (serial data are transmitted on radio link)
At power up the transceiver is in transceiver mode: it is able to send / receive
data to / from the radio link according to its current parameter configuration.
Command mode
The command mode is used to read and update the modem configuration
registers using AT command.
NOTE
The AT command can be locked using ATPWD command.
In command mode, the radio is inhibited (reception and transmission),
excepted when using test command.
Entering command mode :issues on the serial link a +++ sequence. The
sequence of 3 consecutive + characters is accepted only if no character have
been seen before and after the +++ sequence. Register (S214) defines the
silence duration.
Tips 1:if you are using a terminal (such as Hyperterm), you have to send
the +++ sequence using a text file (first create a text file containing only the
+++ characters, and then use in Hyperterm the command “Send text file” in
the “Transfer menu”)
Tips 2:
Idle line for S214
duration +++ (consecutive) Idle line for S214 duration
+ +
+
TRANSCEIVER MODE COMMAND
MODE
RXD
line
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RF54
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Exiting command mode (return back in transceiver mode): send the serial
command ATO <cr>
Transceiver mode
In transceiver mode, two protocols are available:
1. Transparent mode, without flow control.
2. Addressed mode, with flow control (see register S216)
The communication is always half-duplex. The radio transmission is processed
prior to the radio reception (when the transceiver is sending a radio frame, it
is not able to decode any incoming radio frame).
If no data are sent on the serial link, the modem is waiting for radio
reception. Each radio frame sent by another modem is received and the
validated data extracted from the radio frame are sent on the serial link.
When the last character has been sent on the serial link, it is possible to send
an answer at least 100 µs (minimum) after the end of this last character.
(from
RF link)
TXD CMD
RXD REPLY
Minimum ≥100µs
All the data received on the serial link are encapsulated in a radio frame.
The radio frame format depends on the used protocol.
When acting as transceiver, the radio frame transmission always starts under
the following conditions :
Detection of a silence on the serial link (greater than S217) after the
reception of the latest character.
Or when the number of received characters from the serial link is higher or
equal to the maximum radio frame size (S218).
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Transparent mode
In transparent mode, the modem acts as a wire serial link. It means that
alternately, the modem sends on the radio the data received from the serial
link and sends on the serial link the data received from the radio.
The radio frame format is :
•<Preamble><synchro>DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio
reception.
Addressed mode
In transmission mode, data received on the serial link are sent on the radio
link with the following format :
•<Preamble><synchro><Address> DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio
reception.
•The Address field is set up with S256 value (LSB first).
•In reception mode: The <Address> field of the radio frame is
checked with the reception address (S252)
•If the radio frame address matches the transceiver reception
address (S252), DATA (and only DATA) are transmitted on the
serial link
Otherwise received data are silently discarded.
Transceiver state machine
When operating in transceiver mode the 'RF transmission' state machine is :
Idle state of the transceiver : by default the transceiver is waiting for
incoming data on the RS232 link and for incoming radio frame on the radio
link.
The RS232 link has a higher priority than the radio link (if a radio frame is
demodulated meanwhile some RS232 characters are detected on the serial
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link, the radio frame will be discarded and the RS232 incoming data will be
processed).
Processing incoming RS232 data : the incoming RS232 data are
internally buffered. The buffered data are sent in a radio frame (the RF
modulation is started) when almost one of the following conditions occurs:
if a break (silence greater than S217 timeout) is detected on the
incoming serial flow (no more data to be sent).
if the radio buffer size is reached (the number of buffered
characters are equal or greater than the S218 size).
Processing incoming radio frame : the valid data are extracted from the
incoming radio frame and internally buffered. The buffered data are sent on
the fly to the RS232 module output.
AT COMMANDS
Description
AT commands are interpreted only when the transceiver is in
Command mode.
Command : are used to read and update the modem parameters
•A command starts with the 2 ASCII ‘AT’ characters. ‘AT’ means
‘Attention’ follow with one or several characters or other data.
•Each command is ended with <cr> (carriage return).
•In the same command, the time between 2 characters must be less
than 10s.
Response: is sent back for each command on the serial link. The answer is:
•‘O’<cr> (ASCII character 0x4F) for accepted command (or OK
command)
•‘E’<cr> for error
•Specific string when specified
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Set of commands
Commands Description
Operating mode selection
ATO Return back to transceiver mode.
<silence>+++<silence> Command mode activation. The +++ sequence must be
preceded and followed by a calibrated silence (no other
character)
Registers management
ATSn? Displays the Sn register content where n represents the
register number.
The response has the following format:
Sn=y<cr><lf>
ATSn=m Sets the Sn register value with ‘m’. n represents the register
number..
AT&W Saves the new register configuration in EEPROM. Each time
you switch on the modem, the EEPROM configuration will be
loaded in the modem registers.
AT/S Displays all register values. The response has the following
format:
Sxxx=y<cr><lf> for each register.
AT/V Software version display. The response has the following
format:
Adeunis RF Versatile Modem II 868 MHz 500mW
Vxx.yy<cr><lf>
ATR Restore the register default values
ATPWD=m m = pin code (re
g
ister S205) : unlock all AT commands.
m = 0000 : set registers to default value and unlock all AT
commands.
Test modes
ATT1 Pure Carrier (data=0) transmission using current channel.
The output of this mode is achieved by reception of any
character on the serial link.
ATT2 Pure Carrier (data=1) transmission using current channel.
The output of this mode is achieved by reception of any
character on the serial link.
ATT3-ATT6 Modulation using current channel. The output of this mode
is achieved by reception of any character on the serial link.
ATT3: 0.9 KHz modulation
ATT4: 3.6 KHz modulation
ATT5: 14.4 KHz modulation
ATT6: 28.8 KHz modulation
AT/S is not available for baud rate lower than 2400 bauds
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Register description
The register value could be updated using the ATSn=m<cr> command and
displayed using ATSn?<cr> command.
At power-up, the previous transceiver configuration is restored from E2PROM
(non volatile) to RAM. The registers are located in RAM registers, any
modification is performed on RAM registers: To save current register
configurations, it is necessary to use the AT&W<cr> command (If not, the
updated parameters are lost in case of power shortage).
The registers are shared in 2 types: read only (R) or read/write (R/W)
Type Register Function Description Default
value Note
Radio management
R/W S200 Channel number Radio channel for 869 MHz version :
1, Wide Band channel.
19, 84 or 85, Narrow Band channels.
1 3
When leaving factory, this product is set up in Narrow Band (channel 19) to optimize the range
R/W S202 Command mode,
auto-exit Automatic command mode exit 0 : (no specific management), the
command mode will be exited only when
an ATO command is issued.
From 1 to 60 : timeout in second. ÎIf no
activity (no character, command reception
)
is detected in command mode for the
pro
g
rammed timeout, the command mode
will be exited. The module is back to
transceiver mode
0
R/W S204 Preamble
duration Preamble duration, unit ms From 4 up to 50
5 4
R/W S217 Serial timeout for
radio Serial timeout before starting radio transmission, unit ms.
From 3 up to 240.
3 1
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