Microchip Technology RN111B Wifly module User Manual WiFly ver1 with FCC warning

Microchip Technology Inc. Wifly module WiFly ver1 with FCC warning

Users manual

Technical Note RN-111b-UG-1.0 WiFLy RN-111B 802.11b “wifi” wireless LAN – OEM Module Integration Guide and Users Manual Version 1.16 June 16, 2008 Copyright © 2008 Roving Networks, Inc. The contents of this document can be changed by Roving networks without prior notice and do not constitute any binding undertakings from Roving networks. Roving networks is not responsible under any circumstances for direct, indirect, unexpected damage or consequent damage that is caused by this document.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 2 - All rights reserved. Release: 1-02-08 Document version: 1.0 Document number: RN-Wifly-UserGuide-1.0 Printed in the United States of America. Trademarks Registered trademarks from other companies are:
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 3 - Federal Communications Commission (FCC) Statement 15.21 You are cautioned that changes or modifications not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment. 15.105(b) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. Operation is subject to the following two conditions: 1) this device may not cause interference and 2) this device must accept any interference, including interference that may cause undesired operation of the device. FCC RF Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 4 - Industry Canada (IC) Statement 15.21 You are cautioned that changes or modifications not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment. 15.105(b) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the IC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: * Reorient or relocate the receiving antenna. * Increase the separation between the equipment and receiver. * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. * Consult the dealer or an experienced radio/TV technician for help. Operation is subject to the following two conditions: 1) this device may not cause interference and 2) this device must accept any interference, including interference that may cause undesired operation of the device. IC RF Radiation Exposure Statement: This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 5 - Table of Contents 1.1. RN-111B Overview 1. About WiFLY RN-111B 4 1.1. RN-111B Overview 4 1.2. RN-111B Features 4 1.3. RN-111B Options 5 1.4. RN-111B Specificattions 5 1.5. RN-111B Block Diagram 6 1.6. RN-111B Electrical Characteristics 6 1.7. RN-111B Operating and Environmental Conditions 7 1.8. RN-111B Dimensions 7 1.9. RN-111B Pin Description 7 2. Introduction 8 2.1. Hardware interfaces 8 2.2. Configuration 9 2.3. LED indications 9 3. RN-111B Command Reference 10 3.1. Set Commands 11 3.2. Get Commands 14 3.3. Status Commands 14 3.4. Action Commands 15 3.5. File IO Commands 15 4. System timers and other features 16 4.1. Wake on SENSE inputs 16 4.2. Wake on UART 16 4.3. Setting diagnostic print levels 17 4.4. Setting PIO directions 18 4.5. Setting alternate IO functions 18 5. FTP Upgrade and Image Storing 19 6. Factory Default Power up Settings 20
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 6 - 1.1. RN-111B Overview The RN-111b “WiFly” radio module is a complete, stand alone, embedded wireless LAN access device. The device has on board TCP/IP stack and applications. Requiring only 4 pins (POWER, TX, RX, GND) to design in. Once initial configuration is set, the radio can automatically access the WiFi network and send/receive serial data over UART. • Fully Qualified 2.4GHz IEEE 802.11b Wireless LAN radio module. • 32bit CPU, 230K ROM, 80KRAM, 4MB on board flash. • On board ECOS -OS, TCP/IP stacks. • 3.3V UART and SPI interfaces available to various applications. • Accepts wide voltage range input 3.3V – 12VDC. • Multiple Antennae options, SMA, U.FL, ceramic Chip, ¼ wave wire. • Conforms to FCC, CE and the EMI standard of each country. • Modular Approval: FCC ID: T9J-RN111b, ICS: 6514A-RN111b, CE: 0681 • RoHS compliance. 1.2. RN-111B Features • Baud rate speeds: 1200bps up to 921.6Kbps and non-standard baudrates. • Ultra low power consumption (110mA TX, 40ma RX, 12uA deep sleep). • Real time clock for timestamping, auto-sleep and auto-wake modes. • UART local configuration using simple ASCII commands. • Over the air firmware upgrade (FTP), and data file upload. • 3 on board LEDs for status. • 6 Programmable IO pins, 8 analog sensor inputs. • On board flash can be used to store multiple applications, and for data logging, and stored data forwarding at intervals to the networks. • Small-form factor low profile radio modem 25mm x 36mm x 5mm. • 32 pin Standard 2mm DIP socket pin spacing. 1.3 RN-111B Options • Larger flash memory (up to 16Mb) for data logging. • On board boost regulator can power from low voltage 2-3V battery source. • SMA, Chip, U.FL or wire ANT.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 7 - 1.4. RN-111B Specifications Item Specifications Frequency 2402 ~ 2480MHz Modulation DSSS(CCK-11, CCK-5.5, DQPSK-2, DBPSK-1) Channel intervals 5MHz Number of channels 13CH Transmission rate (over the air) 11/5.5/2/1 Mpbs Receive sensitivity -85dBm typ. Output level (Class1) 12dBm max. Dimensions With antenna 25.4(W)X36(L)X5(H)mm 1.5. RN-111B Block Diagram
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 8 - 1.6 RN-111B Electrical Characteristics Min Typ. Max. Unit Supply Voltage VIN 4.0 5.0 12 VDC Supply Voltage VDD 3.0 3.3 3.6 VDC Supply Voltage (VBATT option) 2.0 3.0 3.3 VDC Average power consumption Standby/Idle (default settings) - 35 - mA Sleep 12 20 900 uA (micro) Connected(idle, RX) 40 mA Connected( TX) 110 180 mA 1.7 RN-111B Operating and Environmental Conditions Operating Temperature Range -40 oC ~ 85 oC Storage Temperature Range -40 oC ~ 85 oC Relative Humidity (Operating) ≤90% Relative Humidity (Storage) ≤90%
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 9 - 1.8 RN-111B Dimensions 1.9 RN-111B Pin Description Pin Pin Name Pin Pin Name 1 NO CONNECT 32 GND 2 VDD_SW (NO CONNECT) 31 SENSE-1 (WAKE GPIO) 3 SENSE-5 30 SENSE-2 (WAKE GPIO) 4 SENSE-6 29 SENSE-3 (WAKE GPIO) 5 SENSE-7 28 SENSE-4 (WAKE GPIO) 6 SENSE-8 27 TX – data output 7 PIO6 (RED LED) 26 RX – data input 8 PIO9 (factory reset ) 25 CTS (PIO2) input 9 NO CONNECT 24 RTS (PIO3) output 10 NO CONNECT 23 PIO4 (GREEN LED) 11 RESET* (active LOW ) 22 PIO5 (YELLOW LED) 12 SHUTDOWN (NO CONNECT) 21 SPI_MI 13 VIN (3.6-16VDC) 20 SPI_CS 14 VREG (3.3V LDO output) 19 SPI_CK 15 VBATT (TIE to VREG) 18 SPI_MO 16 GND 17 VDD (3.3V ) *** NOTE: Any unused pins should be left floating.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 10 - 2. Introduction Scope This Integration and Users Guide, along with the RN-111b module have been developed to assist users in embedding Wifi technology into their serial, SPI, and sensor devices. The goal is to make the implementation of embedded Wifi wireless networks as seamless and easy as possible. This document will explain how to setup and establish communications between the RN-111b and Wifi enabled networks for data applications. 2.1 Hardware Interface There are 3 options to power the RN-111b. 1. Supply 3.6 to 16VDC power to VIN (pin 13). Tie VREG (pin 14) to VBATT(pin 15). 2. Apply 3.3VDC regulated power to VDD (pin 17). 3. Apply battery = 2.0 to 3.0VDc to VBATT (pin 15). If VIN is powered, VREG will supply 3.3VDC output and can be used for other circuits, with a current limitation of 50 ma. Reset is active LOW, is optional and does not need to be connected. There is a built in voltage monitor that will pull Reset LOW (open drain FET) if the input voltage drops below 2.7VDC. If external reset is desired, use an OPEN DRAIN driver and do not drive the Reset pin to any voltage > 1.0 Vdc. Warning: Do NOT exceed the voltage ratings on the 3.3V pins, damage to the module will result. Important Notes: #1: RESET input is a low voltage (1.2VDC ) input, with a 10K pullup and built in power monitor circuits. If external reset is desired, use pull down (open drain or collector) only. #2: The Sensor inputs SENS1-7 are extremely sensitive to over voltage. Under no conditions should these pins be pulled high above 1.2VDC. Placing any voltage above this will permanently damage the radio module and render it useless. #3: Placing 5VDC or any voltage above 3.3Vdc into the VDD pins of the module will permanently damage the radio module. Be sure to use the VIN = pin 13 power pin for any power supplied that is > 3.3VDC. #4: Placing 3.3Vdc into the PIO’s while they are set as outputs will permanently damage the radio modules. The failure mode is a short across GND and VCC. Use a 10KΩ resistor in series or a 10KΩ pull up resistor for input and output PIO’s respectively. • Connect a common ground when using the external TX, RX inputs. • For a 3 wire DB-9 interface (tx, rx, gnd only) connect/short CTS to RTS, Factory default is hardware flow control disabled, CTS and RTS not connected. • When using a 5.0Vdc Input, PIO’s require a 10K ohm series resistor. PIO’s are 0-3.3Vdc not 5 volt tolerant.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 11 - 2.2 Configuration Command Mode (vs Normal Data mode)- Upon powerup, the device will be in data mode. To enter command mode, The characters “$$$” must be sent. The device will respond with “CMD”. To exit command mode, send “exit<cr>”. The device will respond with “EXIT”. Parameters, such as the SSid, Channel, IP address, Serial Port settings, and all other settings can be viewed and configured. While in command mode, the device will accept ASCII bytes as commands. Use a normal RS-232 pass through cable from PC passing ASCII characters through the terminal to the RN-111b. The communications settings should match the settings used when RN-111b connects, for example: the default is 115,200bps, 8 bits, No Parity, 1 stop bit, and hardware flow control disabled. Run your favorite terminal emulator, Roving Networks provides a free one, Teraterm, at http://www.rovingnetworks.com/support/teraterm.zip. Type “$$$” on your emulator. You should see “CMD” returned to you. This will verify that your cable and comm. settings are correct. Most valid commands will return an “AOK”, response, and invalid ones will return an Error description. Commands that are not recognized will return a “ERROR: Unknown Cmd”. To exit command mode, type “exit“<cr>. NOTE1 : You can enter command mode locally over the serial port at any time when not connected, and also when connected if the appropriate settings are enabled. 2.3 LED indications Condition GREEN YELLOW RED LED ON Solid CONNECTED over TCP NOT ASSOCIATED Fast BLink NO IP ADDRESS WiFI Receive Packet Slow Blink IP ADDRESS OK ASSOCIATED, but no Internet OFF NO power ASSOCIATED and Internet OK
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 12 - 3.0 WiFLY Command Reference The commands begin with a keyword, and have optional additional parameters, generally space delimited. Commands and options are case sensitive. hex input data can be upper or lower case. String text data, such as SSID, are also case sensitive. The first keyword is fully decoded, and the optional parameters can be short-formed. For example, set uart baudrate 115200 is valid, set uart b 115200 is also valid, set u b 115200 is also valid, however, s uart baudrate 115200 is NOT valid. ENTERING VALUES Numbers can be entered as either decimal, (like 115200 above ) or HEX. To enter HEX, use 0x<value>. For example, the HEX value FF would be entered as 0xFF. Commands fall into 5 general categories: 3.1 SET COMMANDS -Take effect immediately, permanently (save command issued). 3.2 GET COMMANDS -Retrieve the permanently stored information for display to user. 3.3 STATUS COMMANDS -See what is going on with the interface, IP status, etc. 3.4 ACTION COMMANDS- Perform action such as scan, connect, disconnect, etc. 3.5 FILE IO COMMANDS - Upgrade, load and save configuration, delete files, etc. IMPORTANT: HOW CONFIGURATION WORKS When the system boots, all configuration data is loaded into RAM variables from the file called “config”. The set commands actually only modify the RAM copy of variables in the system. This allows temporary change of parameters “on the fly” to test features, minimizes power usage and saves on flash re-write cycles. Once all configuration is complete, the user should be sure to use the save command to store the configuration data, otherwise it will not take effect upon reboot or reset. Multiple configurations can be stored by using the save <filename> command, and these configurations can be loaded using the load <filename> command. These files can be upload to remote FTP site, such that once a desired configuration is created, it can quickly be copied into additional devices (cloning).
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 13 - 3.1. SET COMMANDS These commands begin with “set”. There are 6 major categories. 1. COMM- communication and data transfer, timers, matching chars. 2. IP -IP settings. 3. SYS - system settings such as sleep and wake timers. 4. TIME - timer server settings. 5. UART - serial port settings such as baudrate and parity. 6. WLAN - wireless interface settings, such as ssid, chan, and security options. COMM PARAMETERS – TCP connection status strings set comm close <string> sets the string to send locally when the port is closed. If no string is desired, use the command set comm close (without the parameter) set comm open <string> sets the string to send locally when the port is opened. set comm remote <string> sets the number of bytes to receive before forwarding. COMM PARAMETERS – receive data forwarding set comm idle <secs> sets the idle disconnect timer in seconds, causes disconnect if no transmit or receive data is seen. set comm match <value> sets the decimal value of the matching character to search for to initiate forwarding. 0 disables. set comm size <value> sets the number of bytes to receive before forwarding 0-1 forwards immediately. maximum value = 255 bytes. set comm time <num *10ms> sets the number of 10 millisecond intervals after a byte is received to begin forwarding data. 0 disables. IP PARAMETERS set ip address <addr> sets the IP address. Numbers are SPACE delimited. Example : “set ip a 10 10 10 2” set ip dchp <0,1> Enable or disable DHCP client. set ip gateway <addr> sets the gateway address. set ip host <addr> sets the remote host address. set ip localport <num> sets the local port number. set ip netmask <value> sets the netmask. set ip protocol <0,1,2> sets the protocol. 0=UDP, 1=TCP client, 2= TCP server.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 14 - set ip remote <value> sets the remote host port number. set ip ftp <addr> sets the ftp server address. set ip uport <num> sets the ftp server port number. SYSTEM PARAMETERS set sys autoconn <secs> TCP mode: sets the auto-connect TCP timer. 0 disables. set sys autosleep <num *10ms> UDP mode: sets the auto-sleep timer. 0 disables. set sys iofunc <value> sets the IO port alternate functions. Bit-mapped value. set sys mask <mask> sets the IO port direction mask. Bit-mapped value. set sys printlvl <value> sets numerous print functions. Bit-mapped value. set sys output <value> <mask> sets output PIO pins to HIGH or LOW. Bit-mapped value. Optional mask only sets a subset of pins. set sys sleep <secs> sets the sleep timer. 0 disables. set sys trigger <value> sets the sensor input to wake on (1-4). 0 disables. set sys wake <secs> sets the auto wake timer. 0 disables. TIME SERVER PARAMETERS set time address <addr> sets the time server address. This is also the server address for UDP packet mode. set time port <num> sets the time server port number. set time enable <0,1,2> Enable or disable time server. 1= get time on powerup. 2=get time continuously every 60 seconds. UART PARAMETERS set uart parity <n,e,o> sets the UART parity. Example : “set u p e” sets even parity set uart baud <rate> {1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 }. Example : “set u b 9600” sets the baudrate to 9600 baud. set uart raw <rate> sets a RAW uart value. Used to set non-standard rates. Example : “set u r 760” sets the baudrate to 7200 baud.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 15 - set uart flow <0,1,x> sets the flow control mode. 0=off, 1= hardware RTS/CTS, x = XON/XOFF. set uart tx <0, 1> Disables or enables the TX pin= PIO0 of the UART. Disable will set PIO0 to an INPUT with weak pulldown. WLAN PARAMETERS set wlan auth <value> sets the authentication level. 0= disabled, 1=WPA-PSK, 2=WPA2-PSK, 3=WEP-128. set wlan channel <value> sets the wlan channel, 1-13 is the valid range for a fixed channel. If 0 is set, then a probe scan is performed, using the ssid, for all the channels set in the channel mask. set wlan key <num> <value> sets the WEP key. key must be EXACTLY 13 bytes (26 ASCII chars). Data is expected in HEX format, “0x” should NOT be used here. Example : “set w k 112233445566778899AABBCCDD” Hex digits > 9 can be either upper or lower case. set wlan mask <value> sets the wlan channel mask, bit-mapped value. Bit 0 = ch 1. set wlan num <value> sets the default WEP key to use. 1-4 is the valid range. Example : “set w n 2” sets the default key to 2. set wlan phrase <string> sets the passphrase for WPA security modes. 1-64 chars. The passphrase can be alpha and numeric, and is used along with the ssid to generate a unique 32 byte Pre-shared key (PSK), which is then hashed into a 256 bit number. However, if exactly 64 chars are entered, it is assumed that this entry is already an ASCII HEX representation of the 32 byte PSK and no such processing is done. Example : “set w p password” sets the phrase. set wlan ssid <string> sets the wlan ssid to associate with. 1-32 chars. set wlan rate <value> sets the preferred wlan data rate. Default = 1. Valid settings are: 1 = 1MBit, 2 = 2Mbit, 4=5Mbit, 8 = 11Mbit. Note that the effective range will be reduced as the datarate is increased. set wlan window <value> sets the TCP max. buffer windo size, useful when doing FTP transfers. Default is 1460 bytes.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 16 - 3.2. GET COMMANDS These commands begin with “get”. They represent the stored values as configured. get com display comm. settings. get ip display IP address and port number settings. get mac display the device MAC address. get port return current value of the PIO pins in hex format. get sys display system settings, sleep, wake timers, etc. get time display the time server UDP address and port number. get wlan display the ssid, chan, and other wlan settings. get uart display the UART settings. In addition to the above, there are a few other useful commands available. ver return the software release version 3.3. STATUS COMMANDS These commands begin with “show”, and they return the current values of variables in the system. In some cases, for example IP addresses, the current values are received from the network, and may not match the stored values. show net Displays current network status, association, authentication, etc. show rssi Displays current last received signal strength. show stats Displays current statistics, packet rx/tx counters, etc. show time Displays number of seconds since last powerup or reboot
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 17 - 3.4. ACTION COMMANDS $$$ Enter command mode Characters are PASSED until this exact sequence is seen. If any bytes are seen before these chars, or after these chars, in a 1 second window, command mode will not be entered and these bytes will be passed on to other side. close Causes a network disconnect to occur. exit Exit command mode. Exit command mode. “EXIT” will be displayed. open Connect The device will attempt to connect to the remote stored address and port number. Ping <ip adr> <num> Ping remote host. Default sends 1 packet. Optional <num> sends <num> pings at 10 pings per second. If <num> = 0xFFFF, pings continuously as fast as possible to test link. Use “Ping 0” to terminate a ping command. A few handy “shortcuts”: ping g pings the gateway ping h pings the host ping t pings the timeserver ping f pings the ftp server reboot Forces a complete reboot of the device (similar to a power cycle) forcing a WATCHDOG timeout. This action takes about 5 seconds. scan <time> <active> Performs an active probe scan of access points on all 13 channels, and prints out MAC address, receive signal strength, and SSID name. Optional <time> in ms to scan per channel, default = 200ms. If the <active> option is set = 0, passive scan is performed. This command will cause the device to disassociate if it is connected to an AP, and the user should reboot the device once scanning is complete. time Sends a UDP time server request packet out. 3.5 FILE IO COMMANDS del <name> <num> deletes a file. Optional <num> will override the name and use the sector number shown in the “ls” command. load <name> reads in a new config file. ls Displays the files in the system save Saves the configuration to “config” (the default file). save <name> Saves the configuration data to a new file name set boot <file#> Makes file# the new boot image.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 18 - set factory 1 Loads factory defaults into the RAM configuration. ftp upload <name> Retrieves a file from the remote FTP server. If <name> not specified, “wifly.img” filename is used. ftp upload <name> b Retrieves remote file and updates the boot image.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 19 - 4.0 System timers and other features There are 2 timers that can be used to put the module to sleep, and perform a wake up. If the sleep timer is enabled, the module will automatically go into low power mode after the timer counts down to 0. The countdown is disabled if the module has an IP connection, or the module is in COMMAND mode. The timer is reset when characters are received on the UART. The sleep timer is set with : set sys sleep <time> time=decimal in seconds. The wake timer is set with: set sys wake <time> time=decimal in seconds. UDP sleep, and Connection timers There is another timer than can be used to put the device to sleep. In UDP protocol mode, the auto-conn timer is re-defined as an auto-sleep timer. Opon the start of transmission of the first UDP data packet this timer will count down. set sys autosleep <value> UDP mode: sets the auto-sleep timer. 0 disables the timer is decremented every 10 milliseconds. Because the timer is asynchronous, the actual value can vary by 10ms. Using a minimum value of 2 is recommended to ensure that the UDP packet gets transmitted. For larger packets the value should be increased. In TCP-Client mode, the auto-conn timer is used as a connect out timer. If set, the device will automatically attempt a connection when the timer expires. set sys autoconn <secs> In TCP-Client AND TCP-Server mode, there is also a disconnect timer. set comm idle <secs> sets the idle disconnect timer. This causes a disconnect if no transmit or receive data is seen. 4.1 Wake on Sensor INPUTs There are 4 inputs available to wake the module from sleep, SENS1-4. To enable 1 of these inputs, use: set sys trigger <0,1,2,3,4>. 0 disables. WARNING: Under no conditions should the voltage on any SENS1-8 input exceed 1.2VDC. Permanent damage to the module will result. The SENS1-4 inputs have a small current source that is activated in sleep mode. This source is approximately 100nA, and will cause the input to float up to about 1.2VDC. IF SENSE1 for example, is enabled, pulling the SENS1 pin to GROUND will wake the device. An open drain FET is a good device to tie to the pin. The threshold is about 500mV. Additional pullup to 1.2VDC may need be used if the circuit has an impedance (due to leakage current) of less than 5Mohms ( 500mv / 100nA ). SENS1-4 pins that are not used should be left unconnected.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 20 - 4.2 Wake on UART When the module is in Sleep mode, the UART itself is disabled. However, wake on UART can be accomplished using a resistor divider from the data RX pin to the SENS1-4 pin. Good values for this are a 24K ohm resistor in series from RX to SENS1, and 10K ohms from SENS1 to Ground. To enable or disable this function, use: set sys trig 1. It should be noted that the first byte sent into the module will be lost, so the designer should take care to send a preamble byte to wake up the module before sending valid data bytes. WARNING: Under no conditions should the voltage on SENS1-8 input exceed 1.2VDC. Permanent damage to the module will result. 4.3 Setting Print levels There are a number of print functions that can be enabled to assist in debugging the operation and status of the module. The following command is used to control these printouts. set sys printlvl <value> sets numerous print functions. Bit-mapped value. Bit Function 1 Print startup messages showing progress of association, dhcp, etc. 2 Print statistics once every 8 seconds. 3 Print RSSI readings once per second. The most common use of this function is to have the print level set to 1, which displays startup messages. Once the configuration has been checked, this can then be turned off so that these messages do not interfere with the datastream.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 21 - 4.4 Setting PIO directions, Disabling LED drivers The table below shows the usage of the PIO pins and their default values: Use the command: set sys mask <hex val> to enable or disable certain pins as outputs. For example, set sys mask 0 will default all pins to INPUT. Note that PIO 7, and 8 are used internally by the module and cannot be changed. Setting or clearing bits in these locations will be ignored. 4.5 Alternate IO functions There are a number of alternate IO functions that can be enabled. These functions override the default IO function given in section 4.4, and described in the LED table of section 2.3. If no bits are set for a particular PIO pin, that pin is available to be used as general purpose input or output, based on the IOMASK setting. set sys iofunc <value> sets numerous alternate functions. Bit-mapped value. Bit Function 1 PIO4 - Output. HIGH once associated/authenticated and have IP address. 2 PIO5 - Input. HIGH value triggers TCP connection, LOW value disconnects. 3 PIO6 - Output. HIGH when connected over TCP, LOW when disconnected. 4 PIO4 - (GREEN LED) Normal LED function. 5 PIO5 - (YELLOW LED) Normal LED function. 6 PIO6 - (RED LED). Normal LED function. 7 PIO4 - TBD. 8 PIO5 - (YELLOW LED) Blink/ LOW when RSSI is below threshold (=75dBm). 9 PIO6 - TBD. PIO State DESCRIPTION 9 input Used for factory reset, and connection control 8,7 NA Not available 6 output RED LED- (Associated, internet OK/ TCP conn ) 5 output YELLOW LED – (wifi RX or RSSI ) 4 output GREEN LED - (system status /ASSOC-AUTH) 3 output UART RTS 2 input UART CTS 1 input UART RX 0 output UART TX
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 22 - 5. FTP Upgrade and Image Storage Image Storage WiFly contains a built file system for storing the firmware image(s). Files can be viewed with the ls command. Here is an example result: File# Size 2 12 wifly-1.05 14 1 config 113 Free, Boot=2, Backup=22. Multiple files can be stored, and the boot image can be modified per below. FTP Upload and Upgrade WiFly contains a built in FTP client for getting files and updating the firmware. The client uses passive mode FTP, which allows operation thru firewalls and the Internet. There are 3 fixed settings that need to be used. The username is user. The password is pass. The default directory is /public. To setup FTP, the IP address of the remote server is stored using this command: set ip ftp <addr> sets the ftp server address. . To use FTP, enter the following command: ftp upload <name> Retrieves remote file. Firmware Upgrade - automatic To use FTP to upgrade the firmware, enter the following command: ftp upload <name> b This will overwrite the current backup image, and updates the boot image. Here is an example of what you should see after a successful update: File# Size 2 12 wifly-1.05 14 1 config 15 12 wifly-1.06 101 Free, Boot=15, Backup=2. Firmware Upgrade – manual If it desirable to keep old images, use FTP to retrieve the file, and then use the Set boot <sector> command to set the current boot image number.
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 23 - 6. Factory Default Power up Settings Note: PIO(9) IF pulled HIGH (3.3V) at power up time, and then toggled 3 times will change all settings below back to their factory values. COMM PARAMETERS Close string CLOSE Open string OPEN Remote string Hello FlushSize 32 MatchByte 13 ( = ‘\r’) FlushTimer 0 IdleTimer 0 IP PARAMETERS protocol TCP-Server address 0.0.0.0 localport 2000 netmask 0.0.0.0 gateway 0.0.0.0 host 0.0.0.0 remoteport 2000 ftp 64.62.207.72 (rovingnetworks.com ) (port fixed at 21) dhcp 1 (enabled) SYSTEM PARAMETERS sleeptimer 0 waketimer 10 (10 seconds after sleep we wake up) trigger 1 (SENS1 pin wakes up the device) auto connect 0 iomask 0x78 ( 3,4,5,6 outputs ). print level 1 (startup prints enabled) TIME SERVER PARAMETERS enable 0= disabled address 158.152.1.76 port 37 UART PARAMETERS Baudrate 115200 parity n (none) flow 0=disabled WLAN PARAMETERS authentication 0=disabled channel 1 ssid Linksys rate 1 (1= 1Mbit)
Roving Networks Wifly RN-111B User Guide Version 1.16 www.rovingnetworks.com support@rovingnetworks.com Phone 408-395-6539 - 24 - THIS IS THE END OF THE DOCUMENT

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