Janus Arduino Shield User Manual
Contents
1. Downloaded cloned the Arduino software repository Installed the Arduino IDE and Arduino Uno Leonardo USB drivers Have 1x USB B to A cable Have 1x 12 VDC Power Supply 1 The first thing to do is to move the Janus Plugin Library and examples to the proper directory which is usually Arduino libraries for standard Arduino IDE installs Cate Patel etd RODE TIE Compe Ea Lorel Dirk 101 bg UNP niai ECN Pt bgt Biuyan Master Despi Repoite Sgt Aiur haser Li Vaa pe Hevel NORTH ki Hebactk l inil JANUS zc more C MMUNICATI ONS Application Note 115 Getting Started continued 2 On your Arduino Uno the USB B jack will short out two pins on the Plug in Module if not taken into consideration It s recommended to use one of the included stickers that come with your new Arduino Uno to simply cover the jack You may also want to utilize the spacers that come with the Arduino Shield Kit from janus to keep the board spacing easy 3 It s easiest to connect the micro coax to the Cellular micro coax connection on your Plug in Module before putting it into the Shield s sockets Once connected align your Plug in Module and insert it into the sockets 4 Insert the Shield into the base Arduino Uno board taking care to ensure all the long pins are in place 4 JANUS remote C MMUNICATI ONS Application Note 115 Getting Started continued 5 If not done already connect your antenna to the SMA te2. 0 as this default baud rate Although defaulted for proper changeout of a Telit modem check that INIT BAUDRATE is 115200 and NW_BAUDRATE is 19200 Poke Ee etch Togs Heip Racine Chet amp inclite ceana _ Flegin he id betise HH SE Ta 3 IL iefise WHH m D S i Hea Hardwire Conical if pietine HON _FRARLF 3 3 pdeiise HIH Se OFT d if Hiie HA VMS ER 4 7 defice HOM PARHON AD F I Tiid MIH Jiasi CEH ivr terial hi Softwareierial Medes OGM H E niet Se THD Sottearederial Hedemferial bHan Feise Necdet eriel Hodenferial cherials Fiada 10 Go to Tools gt Serial Monitor and open up the serial port monitor change it to 19200 baud Once open upload the sketch through the menu or via the gt arrow indicator 7 JANUS remote COMMUNICATIONS Application Note 115 Getting Started continued 11 The sketch will start immediately and will run through the process shown below a x m Errian he TM Pir da Merih Tephi Hirig aul i r wiri 12 Once complete the modem is ready to use at 19200 So we move on and select the Modem_Terminal sketch Just as before ensure the BAUDRATE define is 19200 and then upload the sketch This will cross connect the Atmega328 s UARTs and allow you direct terminal communications with the modem JANUS remore COMMUNICATIONS Application Note 115 Getting Started continued 13 From here you play with the modem directly via the AT com
3. A Application Note 115 JANUS ce more o e COMMUNICATIONS Author Clayton Knight Senior Design Engineer Janus Remote Communications Janus Arduino Shield User Manual Instructions Overview The Janus Plug in Modules are versatile pre certified devices that allow a user s application be cellularly connected without worrying about many of the complications that accompany cellular integration The Arduino Platform allows users to be up and running with circuitry quickly for evaluation and potential testing for integration to a more defined system later on Janus has taken the liberty of merging these two areas with the Arduino Shield for the Plug in Modules allowing a user to evaluate these devices and bring up a proof of concept in record time We are providing customers with both open source hardware designs and software libraries leaving nothing out for the user to guess Please be aware that Janus offers these software libraries as is with no warranty or guarantee and are for evaluation purposes only All schematics layout and software can be downloaded forked here github com JanusRC Arduino Contents e Connections e Jumpers e Getting Started caus JA01 AN115 Revision 00 rae 21 Oct 2015 Application Note 115 Connections S S p a o e e a o Arduino compatible stacking headers with top socket for I O usage ON OFF and Reset external buttons for some manual control Hardware and Soft
4. e the Serial library Blinky is a fine built in example for this JANUS iemore C MMUNICATI ONS
5. mand interface or explore the Janus created sketches and library Take note of the following 1 This library is currently optimized for the HE910 HSPA910CF if using the DE910 EVDO910CF or other modem types be prepared to adjust the more advanced code that checks for a SIM card or checks for data registration Although available its recommended to do all evaluation with the barrel jack as your power source You can evaluate using USB as your power source but be aware that high energy transmissions and modem operations can draw more power than USB is capable of by default If you have good reception and only want basic things like SMS this may work for you just fine In the Janus_Plugin h file you can enable debugging by uncommenting the following as necessary 1 define DEBUG Higher level UART show both TX and RX define DEBUG_LOWLVL Low level show individual received parsed lines in brackets In the Janus_Plugin h file you MUST uncomment USE_SMS or USE_SOCKET to use these functions They are commented out to save code space when building the sketches that don t need them 14 You may also use the Arduino Uno as a virtual COM port directly via the hardware serial port for direct terminal communications if necessary no sketch cross connect in the middle Simply cross connect the HW section of the 2x3 UART selection header with the center pins and ensure that the Arduino Uno has a blank sketch on it that does NOT import or us
6. rminal and place your UART jumpers on the SW end of the 2x6 header next to the antenna connection 6 Connect your power supply to the barrel jack and then connect your USB cable to your host PC that will run the Arduino IDE 7 Start the Arduino IDE it s important to have the Plugin library in place before booting the IDE as it autodetects everything and must be restarted if you adjust the placement of the directories 5 JANUS remote COMMUNICATIONS Application Note 115 Getting Started continued 8 Once the IDE is running ensure to set the board to the Arduino Uno and the Port to the COM Port that the Arduino Uno installs under Sketch Help la sketch_octl 4a HH G3 Pi Lr cr fa void setup f put y void loop i pat y Auto Format Archive Sketch Fix Encoding amp Reload Serial Monitor Ctrl Shift Mi Board z Arduino Uno Port COM78 Arduino Uno Programmer AVRISP mk Burn Bootloader Arduino Uno on COMES S ee JANUS remore C MMUNICATI ONS Application Note 115 Getting Started continued 9 Go to File gt Examples gt Janus Plugin Modem Library gt Baudrate_Change This will bring up the baud rate change sketch that will allow you to adjust the baud rate of the modem to a slower one that the library sketches will be happy with They all utilize software serial by default which requires a slower baud rate for proper functionality Janus has chosen 1920
7. ware translated TX RX UART selection USB Port directly from the Telit modem SMA to micro coax antenna connection Green cellular status LED connected to the Stat LED of the Telit Modem Untranslated modem UART breakout Modem GPIO breakout see the user manual for more information Terminus Plug in Modem DIP socket accepts all Plug in Modem designs 0 Power selection jumpers Defaulted for Barrel Jack VIN usage Jumpers The shield has several jumpers that are connected by default for the user to adjust or remove connections without need ing to cut traces Red color denotes a defauled normally closed connection JP1 External VIN Routes power from VIN through the on board 5V buck regulator JP2 USB VIN Routes power from the 5V signal USB bypassing the regulator JP3 VBUS control Ensures that VBUS is always ON bypassing control JP4 Modem Enable Routes D5 to the Terminus Enable pin JP5 Modem On Off Routes D6 to the Terminus On Off pin JP6 Modem PWRMON Routes AO to the Terminus Powermon feedback pin JP7 Modem RTS The RTS UART line jumper to ground reqired when not using full UART JP8 Modem VBUS Routes D4 to the Terminus VBUS control circuitry JANUS ke mor C MMUNICATI ONS Application Note 115 Getting Started Before you begin You must have the following for this section Janus Plug in Module Janus Plugin Module Arduino Shield Arduino Uno or Leonardo this section covers Uno usage
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