CC3000 WiFi Guide Datasheet by Adafruit Industries LLC

View All Related Products | Download PDF Datasheet
adafrult learning system
Adafruit CC3000 WiFi
Created by Rick Lesniak
Last updated on 2018-08-22 03:37:07 PM UTC
2
4
6
7
7
8
12
12
18
18
18
19
19
19
19
21
21
23
23
25
25
27
27
29
29
31
31
31
31
31
31
31
32
33
33
33
33
35
35
37
40
40
41
Guide Contents
Guide Contents
Overview
Assembly and Wiring
CC3000 Breakout
Assembly
Wiring
CC3000 Shield
Assembly
Connections
Pinouts
Optional Antenna
Using the CC3000
Download the Library
Sample Sketches
WEP with HEX Passphrases
buildtest
buildtest
WebClient
WebClient
ntpTest
ntpTest
InternetTime
InternetTime
GeoLocation
GeoLocation
SmartConfig
SmartConfigCreate and SmartConfigReconnect
SmartConfigCreate
SmartConfigReconnect
Using the SmartConfigCreate Sketch
Step One: Install the SmartConfig App
Step Two: Configure the SmartConfig App on your Phone
Step Three: Open and Run 'SmartConfigCreate'
Step Four: Start the SmartConfig app on your Phone
Step Five: Stop the SmartConfig App on the Phone
Did the sketch timeout before connecting?
Using the SmartConfigReconnect Sketch
SendTweet
SendTweet
Firmware Upgrades
Downloads
Files & Downloads
Dimensional diagram for the CC3000 breakout
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 2 of 46
44
44
44
44
44
44
44
44
45
45
45
46
FAQ
I'm using WEP - how do I configure my HEX passphrase?
I'm using WEP and I tried that but it still doesn't work
What is the gain of the ceramic antenna? How does it compare to the external antennas?
How can I use the CC3000 with a static IP?
I'm having difficulty seeing/connecting to my network...
I'm not in the USA and my CC3000 can't see my router
My CC3000 sketch locks up when initializing the CC3000...
My CC3000 sketch locks up after running for a while or under heavy load...
How do I set a static IP address?
How do I connect to a college/hotel/airport WiFi network that requires using a web page to authenticate?
I'm using the IPAddress class or an example from the Ethernet library and it doesn't work, what's wrong?
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 3 of 46
:9: Jill P «.22 9;. i? c C o o o 03?; 00 s _
Overview
The CC3000 WiFi module from Texas Instruments is a small silver package which finally brings easy-to-use, affordable
WiFi functionality to your Arduino projects.
It uses SPI for communication (not UART!) so you can push data as fast as you want or as slow as you want. It has a
proper interrupt system with IRQ pin so you can have asynchronous connections. It supports 802.11b/g,
open/WEP/WPA/WPA2 security, TKIP & AES. A built in TCP/IP stack with a "BSD socket" interface supports TCP and
UDP in both client and server mode, with up to 4 concurrent socket connections.
The CC3000 is available from Adafruit As a Breakout Board, and as an Arduino Shield.
Both the shield and the breakout board have an onboard 3.3V regulator that can handle the 350mA peak current, and
a level shifter to allow 3 or 5V logic level. The antenna layout is identical to TI's suggested layout and we're using the
same components, trace arrangement, and antenna so the board maintains its FCC emitter compliance (you'll still need
to perform FCC validation for a finished product, but the WiFi part is taken care of). Even though it's got an onboard
antenna we were pretty surprised at the range, as good as a smartphone's.
The shield also features a MicroSD socket, and a reset button.
AND, the shield supports the Arduino SPI passthrough header pins, so it's compatible with the Mega, Leonardo, and
Due, right out of the box - no rewiring necessary! Just solder closed the MISO, SCK, and MOSI jumpers on the back of
The CC3000 does not support "AP" mode, it can connect to an access point but it cannot be an access point.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 4 of 46
me shie‘d.
the shield.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 5 of 46
Assembly and Wiring
Check out the next couple of pages for detailed instructions for setting up your CC3000 shield or breakout board!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 6 of 46
CC3000 Breakout
Assembly
The CC3000 breakout board ships with a strip of header pins. Snip off a 9-pin section and solder it to the 9 holes on
the side of the board.
The easiest way to do this is to first insert the header pins into a breadboard, to hold them securely while you solder.
Set the breakout board over the pins, and carefully solder each pin (see our Guide To Excellent
Soldering (https://adafru.it/aTk) for instructions and tips on getting the best results).
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 7 of 46
Wiring
Use jumper wires to attach the CC3000 breakout board to your arduino:
Connect GND to one of the Arduino GND pins:
Connect Vin to Arduino +5V
NOTE: If using an Arduino Due, which is not tolerant of 5V on its input pins, you must instead connect the CC3000
3V3 pin to the Due's 3.3V power pin. Don't connect Vin to the Due's +5V!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 8 of 46
Next, connect the enable and interrupt lines:
VBEN to Digital 5
IRQ to Digital 3
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 9 of 46
Now, connect SPI:
CLK to Digital 13
MISO to Digital 12
MOSI to Digital 11
CS to Digital 10
If you're using a Mega, you'll need to connect to the hardware SPI pins:
CLK to Digital 52
MISO to Digital 50
MOSI to Digital 51
CS to Digital 10
If you're using an Arduino Due, you'll need to connect to the hardware SPI pins. See the excellent diagram in this
forum post (https://adafru.it/dVz) if you aren't sure where the hardware SPI pins are located on the Due. You want to
connect to the SCK, MISO, and MOSI pins on the small 6 pin male header next to the Due's SAM3X8E processor:
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 10 of 46
o CLK :0 SP‘ SCK - u o
CLK to SPI SCK
MISO to SPI MISO
MOSI to SPI MOSI
CS to Digital 10
3.3v is an output from the breakout board's voltage regulator - we won't be connecting anything to it in this
tutorial.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 11 of 46
CC3000 Shield
Assembly
The CC3000 Shield ships with a strip of header pins.
Break off 6, 8, or 10-pin sections and insert them into the header sockets of your Arduino
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 12 of 46
Place the shield over the pins, and carefully solder each one in place (see our Guide To Excellent
Soldering (https://adafru.it/aTk) for instructions and tips on getting the best results).
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 13 of 46
The shield also comes with a 2X3 pin female header socket. This will plug into the 2X3 ICSP pin header on your
Arduino, to bring SPI up to the shield. This allows you to use the shield with an Arduino Mega, Leonardo, or Due
without having to cut traces or solder jumper wires for SPI.
Set the socket header into the holes on the shield, then flip the shield over and solder the pins. The height of the
header block matches the height of the rest of the shield header pins, so the block should be perfectly positioned for
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 14 of 46
soldermg!
soldering!
By default, SPI through the ICSP header is not connected. To enable the ICSP header connections, you'll have to
connect three solder jumpers on the bottom of the CC3000 shield.
Simply melt a blob of solder, connecting the pads, on each of the three solder jumpers (keep your solder inside the
white boxes - don't let the solder cross between boxes!)
Soldering these jumpers is required if you are using the shield with a Mega, Leonardo, or Due, but is not
required for use with an UNO!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 15 of 46
And that's it! Your CC3000 Shield is ready to use. Move on to the next tutorial page to get started!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 16 of 46
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 17 of 46
Connections
Pinouts
The CC3000 is (electrically) fairly simple to use. The module requires an SPI connection, including a clock (CLK), data
in from a microcontroller (MOSI) and data out to the microcontroller (MISO). It also uses a chip-select line (CS) for SPI to
indicate when a data transfer as started
Along with the SPI interface, there is a power-enable type pin called VBAT_EN which we use to start the module
properly and also an IRQ pin, which is the interrupt from the CC3000. The IRQ pin is required to communicate and
must be tied to an interrupt-in pin on the Arduino. On the Mega/UNO, we suggest #2 or #3
On the CC3000 shield, we use the following pin connections
SCK - #13
MISO #12
MOSI #11
CS for CC3000 #10
VBAT_EN #5
CS for SD Card #4
IRQ #3
On the breakout, be aware that the MISO (data out from module) pin does not go 'high impedance' when CS is driven
high. Check the shield for how we use a 74AHC125 to manually tri-state this pin when it's shared with an SD card.
Optional Antenna
If you have a shield or breakout with a uFL connector (instead of an on-board ceramic antenna) you can use a uFL to
RP-SMA (http://adafru.it/852) or uFL to SMA (http://adafru.it/851) (less common) adapter and then connect to any 2.4
GHz antenna (http://adafru.it/945). This is handy when you want to place the module in a box but have the antenna on
the outside, or when you need a signal boost
Please note that when using an external antenna, the module is no longer FCC-compliant, so if you want to sell the
product with FCC certification, it must be retested.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 18 of 46
Using the CC3000
Download the Library
We will start by downloading the Adafruit CC3000 Library, available from our GitHub repository (https://adafru.it/cFn).
You can download the latest ZIP file by clicking the button below.
https://adafru.it/cHe
https://adafru.it/cHe
Rename the uncompressed folder Adafruit_CC3000. Check that the Adafruit_CC3000 folder contains
Adafruit_CC3000.cpp and Adafruit_CC3000.h; also ccspi.cpp, ccspi.h, an examples folder, and a utility folder
Place the Adafruit_CC3000 library folder your
sketchbookfolder
/libraries/ folder. You may need to create the libraries
subfolder if its your first library. Restart the IDE. You can figure out your
sketchbookfolder
by opening up the
Preferences tab in the Arduino IDE.
If you're not familiar with installing Arduino libraries, please visit our tutorial: All About Arduino
Libraries (https://adafru.it/aYM)!
Sample Sketches
The Adafruit CC3000 Library contains several example sketches, demonstrating different capabilities of the CC3000
along with some useful programming techniques.
To run the sample sketches, you'll have to edit them to include the SSID and password of your access point.
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
WEP with HEX Passphrases
If you are using WEP security, and your passphrase is a series of HEX digits, you can't simply enter it as a literal string.
Instead you have to define is as an actual binary sequence.
For example, if your passphrase is 8899aabbccdd, you would define it as follows:
Make sure your Arduino is powered by a 1 amp or higher rated external power supply when using with the
CC3000! Powering an Arduino + CC3000 from a computer/laptop USB port will lead to unstable behavior
and lockups because the USB port can't supply enough power!
Use the Arduino 1.6.4 version or newer with the CC3000, EXCEPT for the firmware update sketches in the
library examples folder. Use 1.0.6 for those!
#define WLAN_SSID "myNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "myPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 19 of 46
// #define WLAN_PASS "8899aabbccdd" //don't do it this way!
//do it this way:
const char WLAN_PASS[] = {0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0x00};
Remember to append 0x00 to the declaration, after the passphrase, as shown in the example!
Be aware the library does not currently support WEP passphrases with 0x00 null characters! See this bug for
more details: https://github.com/adafruit/Adafruit_CC3000_Library/issues/97
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 20 of 46
buildtest
buildtest
The buildtest sketch does a full test of core WiFi connectivity:
Initialization
SSID Scan
Access Point connection
DHCP address assignment
DNS lookup of www.adafruit.com (https://adafru.it/aK0)
Ping www.adafruit.com (https://adafru.it/aK0)
Disconnect
It's a good idea to run this sketch when first setting up the module. It will let you know that everything is working
correctly.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
If you're using WEP, the password should look like this:
const char WLAN_PASS[] = {0x1A, 0x2B, 0x3C, 0x4D, 0x5E, 0x00};
Since it's a collection of bytes not 'passphrase' style key
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Here's a sample of the Serial Monitor output of buildtest. You should see something similar:
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 21 of 46
Make sure you can see and recognize all of the access points around, connect to the access point, get a good
connection with DHCP, can do a DNS lookup on www.adafruit.com (https://adafru.it/aK0) and ping it successfully. If all
this works, then your hardware is known good!
Hello, CC3000!
RX Buffer : 131 bytes
TX Buffer : 131 bytes
Free RAM: 1237
Initialising the CC3000 ...
Firmware V. : 1.19
MAC Address : 0x08 0x00 0x28 0x01 0xA8 0x8A
Started AP/SSID scan
Networks found: 3
================================================
SSID Name : Extreme
RSSI : 58
Security Mode: 3
SSID Name : Express
RSSI : 59
Security Mode: 3
SSID Name : fios63
RSSI : 57
Security Mode: 3
================================================
Deleting old connection profiles
Attempting to connect to fios63
Started AP/SSID scan
Connecting to fios63...Waiting to connect...Connected!
Request DHCP
IP Addr: 192.168.1.23
Netmask: 255.255.255.0
Gateway: 192.168.1.1
DHCPsrv: 192.168.1.1
DNSserv: 192.168.1.1
www.adafruit.com -> 207.58.139.247
Pinging 207.58.139.247...5 replies
Ping successful!
Closing the connection
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 22 of 46
WebClient
WebClient
The WebClient sketch does a test of the TCP client capability:
Initialization
Optional SSID Scan (uncomment code section to enable)
Access Point connection
DHCP address assignment
DNS lookup of www.adafruit.com (https://adafru.it/aK0)
Optional Ping of www.adafruit.com (https://adafru.it/aK0) (uncomment code section to enable)
Connect to website and print out webpage contents
Disconnect
The sketch connects to www.adafruit.com (https://adafru.it/aK0) and opens a special webpage (https://adafru.it/cFo) we
have prepared for this example. It reads the contents of the page and prints that out to the Serial Monitor.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Here's a sample of the Serial Monitor output of WebClient. You should see something similar:
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 23 of 46
Once you get this working, you can change the webpage you want to access to any kind of webpage on the Internet
Hello, CC3000!
Free RAM: 1157
Initializing...
Started AP/SSID scan
Connecting to fios63...Waiting to connect...Connected!
Request DHCP
IP Addr: 192.168.1.23
Netmask: 255.255.255.0
Gateway: 192.168.1.1
DHCPsrv: 192.168.1.1
DNSserv: 192.168.1.1
www.adafruit.com -> 207.58.139.247
Connect to 207.58.139.247:80
-------------------------------------
HTTP/1.1 200 OK
Date: Thu, 12 Sep 2013 11:04:02 GMT
Server: Apache
Access-Control-Allow-Origin: http://learn.adafruit.com
Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Accept-Encoding, Authorization, Referer, User-Agent
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Credentials: true
Access-Control-Max-Age: 1728000
Last-Modified: Thu, 27 Jun 2013 14:13:27 GMT
Accept-Ranges: bytes
Content-Length: 74
Connection: close
Content-Type: text/html
This is a test of the CC3000 module!
If you can read this, its working :)
-------------------------------------
Disconnecting
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 24 of 46
ntpTest
ntpTest
The ntpTest sketch does a test of the library's SNTP (Simple Network Time Protocol) client:
Initialization
SSID Scan
Access Point connection
DHCP address assignment
SNTP time synchronization
Extract and print current time and date
The sntp client performs a time synchronization with servers from us.pool.ntp.org and pool.ntp.org. You can also
optionally provide it the addresses of one or two of your own time servers. The ntpTest sketch tries time.nist.gov first,
before falling back to one of the pool servers.
The client also breaks out the synchronized network time into a structure containing current date and time fields. The
sketch formats and prints this information to the Serial Monitor.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Here's a sample of the Serial Monitor output of ntpTest. You should see something similar:
To avoid unnecessary loading of NTP servers, please perform the time synchronization as infrequently as
possible. Once per day or longer should be plenty to maintain reasonably accurate time.
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 25 of 46
Hello, CC3000!
Free RAM: 843
Initialising the CC3000 ...
Firmware V. : 1.19
Deleting old connection profiles
Attempting to connect to fios63
Started AP/SSID scan
Connecting to fios63...Waiting to connect...Connected!
Request DHCP
UpdateNTPTime
Current local time is:
7:18:52.65445
Thursday, September 12, 2013
Day of year: 255
Closing the connection
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 26 of 46
InternetTime
InternetTime
The InternetTime sketch is a simplifies version of the ntpTest sketch. It does not use the library's SNTP client, but
directly queries an NTP time server from pool.ntp.org to get the current "UNIX time" (seconds since 1/1/1970, UTC
(GMT)).
The sketch then uses the Arduino's internal timer to keep relative time. The clock is re-synchronized roughly once per
day. This minimizes NTP server misuse/abuse.
The RTClib library (a separate download, and not used here) contains functions to convert UNIX time to other formats if
needed.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Here's a sample of the Serial Monitor output of InternetTime. You should see something similar:
To avoid unnecessary loading of NTP servers, please perform the time synchronization as infrequently as
possible. Once per day or longer should be plenty to maintain reasonably accurate time.
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 27 of 46
Hello, CC3000!
RX Buffer : 131 bytes
TX Buffer : 131 bytes
Initialising the CC3000 ...
Firmware V. : 1.19
MAC Address : 0x08 0x00 0x28 0x01 0xA8 0x8A
Deleting old connection profiles
Attempting to connect to fios63
Started AP/SSID scan
Connecting to fios63...Waiting to connect...Connected!
Request DHCP
IP Addr: 192.168.1.23
Netmask: 255.255.255.0
Gateway: 192.168.1.1
DHCPsrv: 192.168.1.1
DNSserv: 192.168.1.1
Locating time server...
Attempting connection...
Connect to 62.116.162.126:123
connected!
Issuing request...
Awaiting response...OK
Current UNIX time: 1378987424 (seconds since 1/1/1970 UTC)
Current UNIX time: 1378987439 (seconds since 1/1/1970 UTC)
Current UNIX time: 1378987454 (seconds since 1/1/1970 UTC)
Current UNIX time: 1378987469 (seconds since 1/1/1970 UTC)
… etc …
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 28 of 46
GeoLocation
GeoLocation
This example sketch queries the freegeoip.net service to get the local approximate geographic location based on IP
address.
Combined with code in the ntpTest or InternetTime sketches, this can give absolute position and time, extremely
useful for seasonal calculations like sun position, insolation, day length, etc. One could always add a GPS module or
just plug in values from your GPS or phone, but for applications where extreme accuracy isn't required, this has the
luxury of coming 'free' with the CC3000 already in use.
Position should be polled only once, at startup, or very infrequently if making a mobile network-hopping thing, so as
not to overwhelm the kindly-provided free geolocation service.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Here's a sample of the Serial Monitor output of GeoLocation. You should see something similar:
Positional accuracy depends on the freegeoip.net database, in turn based on data collected by
maxmind.com. No guarantees this will work for every location. This software is provided as-is.
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 29 of 46
Hello, CC3000!
Free RAM: 837
Initializing...OK.
Connecting to network...Started AP/SSID scan
Connecting to Turlingdrome...Waiting to connect...connected!
Requesting address from DHCP server...OK
IP Addr: 192.168.0.4
Netmask: 255.255.255.0
Gateway: 192.168.0.1
DHCPsrv: 192.168.0.1
DNSserv: 192.168.0.1
Getting server IP address...192.151.154.154
Connecting to geo server...
Connect to 192.151.154.154:80
connected.
Requesting data...
Reading response...OK
Disconnecting
RESULTS:
Country: United States
Region: California
City: Richmond
Longitude: -122.35
Latitude: 37.94
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 30 of 46
SmartConfig
SmartConfig is the special functionality in the CC3000 that allows setting the SSID and password settings without
having to type or re-program the module. Any iOS/Android device can be used to set the configuration - solving the
annoying deployment problem of how to set the connection details for a new device.
SmartConfigCreate and SmartConfigReconnect
These two SmartConfig sketches should be used together to demonstrate how the SmartConfig app can be used on
your smartphone to pass connection details to your CC3000.
SmartConfigCreate
This sketch will initialise the CC3000, erasing any previous connection details stored on the device. It will then enter
SmartConfig mode with a 60 second timeout where it waits for configuration data to arrive from the SmartPhone.
If a connection was successfully established, the connection details will be stored in the non-volatile memory of the
CC3000, and the module will be configured to automatically reconnect to this network on startup (meaning you don't
need to run the SmartConfig app unless your AP details change or you erase the stored connection details on the
module).
There's no need to edit the sketch to add your SSID and password - the SmartConfig app does that for you!
SmartConfigReconnect
This sketch shows how to use the CC3000 in 'reconnect' mode, and avoid erasing all stored connection profiles,
which is unfortunately necessary with other sketches where manual config data is provided.
Initializates the CC3000 with a special SmartConfig flag so it doesn't erase the profile data
Access Point connection (based on saved AP details)
DHCP address assignment
Disconnect
Using the SmartConfigCreate Sketch
Step One: Install the SmartConfig App
Before you can use SmartConfig to provide your AP connection details, you need to install the SmartConfig app:
For iOS devices simply search for the TI WiFi SmartConfig app (https://adafru.it/cQ3) from the app store.
For Android devices, you can download the app directly from TI's CC3000 Wiki (https://adafru.it/cQ4)
Step Two: Configure the SmartConfig App on your Phone
Once you've installed the SmartConfig app, you need to connect to the AP that the CC3000 will be using
(HOMENETWORK in the images below), and then load the app.
You should see a screen similar to the following, with the AP's SSID, Gateway IP Address and Device Name fields
already populated:
SmartConfig is still in beta testing! It might not work on all networks!
This tutorial will use an iPad to provide the SmartConfig details, but the process is basically the same on
Android.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 31 of 46
SSID Password Gateway IP Address Kay Device Name iG-IS Device Configuration HOM ENETWOH K 192.1681] 1 003000
Add the password for your Access Point, but don't click the START button yet!
Step Three: Open and Run 'SmartConfigCreate'
In the File > Examples > Adafruit_CC3000 menu select the SmartConfigCreate sketch.
Run the sketch and open the Serial Monitor via Tools > Serial Monitor.
You should see something similar to the following text:
Don't change the Key or DeviceName fields!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 32 of 46
Step Four: Start the SmartConfig app on your Phone
Before the Android sketch times out, click to 'Start' button in your TI app, and watch the serial monitor window of your
sketch. After about 30 seconds you should see something similar to the following:
Step Five: Stop the SmartConfig App on the Phone
If everything worked out and you successfully connected to your AP, the connection details were also stored in non-
volatile memory on the CC3000 module. You can now use the SmartConfigReconnect sketch to test the connection
details, specifically paying attention to the extra flags in the Adafruit_CC3000.begin() function compared to other
sketches..
Did the sketch timeout before connecting?
Be sure to click 'Stat' in the SmartPhone app as soon as the 'Waiting for SmartConfig connection (~60s) ...'
message pops up. The SmartConfig device will timeout after 60 seconds, so you may need to run the sketch
again and be a bit quicker with your fingers.
Make sure that the iPad or SmartPhone is connected to the same AP that you want the CC3000 to connect
to!
Check your password in case there is a typo
Using the SmartConfigReconnect Sketch
The SmartConfigReconnect sketch shows how to use (and retain) the connection details that were written to the
device in the example above.
The key to using and maintaining the connection details is to pass an optional flag to the Adafruit_CC3000 classes
.begin() function to tell the driver NOT to delete existing connections, and to stay in auto connect mode:
Hello, CC3000!
RX Buffer : 131 bytes
TX Buffer : 131 bytes
Free RAM: 595
Initialising the CC3000 ...
Firmware V. : 1.24
MAC Address : 0x08 0x00 0x28 0x01 0xA8 0x1F
Waiting for a SmartConfig connection (~60s) ...
Got smart config data
Saved connection details and connected to AP!
Request DHCP
IP Addr: 192.168.0.103
Netmask: 255.255.255.0
Gateway: 192.168.0.1
DHCPsrv: 192.168.0.1
DNSserv: 192.168.0.1
To use these connection details be sure to use
'.begin(false, true)' with your Adafruit_CC3000
code instead of the default '.begin()' values!
Closing the connection
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 33 of 46
The first flag should always be false, and is used to indicate that we are going to perform a firmware update. The
second flag should always be true when using SmartConfig data, and puts the CC3000 in an auto-reconnect mode
and maintains existing connection details in non-volatile memory.
If you were able to successfully connect using the SmartConfigCreate sketch, SmartConfigReconnect should give you
something similar to the following output:
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
/* !!! Note the additional arguments in .begin that tell the !!! */
/* !!! app NOT to deleted previously stored connection details !!! */
/* !!! and reconnected using the connection details in memory! !!! */
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
if (!cc3000.begin(false, true))
{
Serial.println(F("Unable to re-connect!? Did you run the SmartConfigCreate"));
Serial.println(F("sketch to store your connection details?"));
while(1);
}
Hello, CC3000!
Trying to reconnect using SmartConfig values ...
Reconnected!
Requesting DHCP
IP Addr: 192.168.0.103
Netmask: 255.255.255.0
Gateway: 192.168.0.1
DHCPsrv: 192.168.0.1
DNSserv: 192.168.0.1
Closing the connection
Any time you don't provide the extra flags to the .begin method, all connection details will be erased and
auto-reconnect mode will be disabled! Unfortunately, this is necessary when providing manual connection
details, so be careful using non SmartConfig* sketches if you don't want to lose your connection details.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 34 of 46
velope “Setting send reads Home a My appllcallons Ard u ino-Tweet-Test Damils Ohm?! lad INF/whom damn: Rom kw: Delete Appllcatlon Type M 0 Read only 0 Read and WM 0 Read, Wnle and s dlrec! messages Whatlyct o1 access am you appsmm ma? Nm‘ OAnmeo applmmns "an" ma 3 mm mm. Fm an ma ahmn m Applalhn mum Mod-l
SendTweet
SendTweet
This example sketch sends “tweets” (Twitter messages) from an Arduino with CC3000 WiFi. Usually this requires extra
proxy software running on another computer, but this sketch operates directly from the Arduino.
This is a barebones example that issues a single fixed message, but it’s easily adapted to send different information
such as a periodic sensor reading.
In addition to the WiFi setup explained below, it’s necessary to set up a Twitter developer account and complete an
application form before this can be used. That procedure is explained on the Twitter Setup page of the Internet of
Things Printer tutorial (https://adafru.it/cHs).
One additional configuration step is required on the Twitter developer site: from your applications Settings” tab, set
access to “Read and Write.” This is necessary so our sketch can send tweets; the printer sketch only reads tweets.
Before you run the sketch, edit it to replace the dummy SSID and password with your own:
Also, make sure that the right wireless security scheme is selected (unsecured, WEP, WPA, or WPA2)
Unfortunately Twitter changed their API and require SSL connections which the CC3000 does not support.
This page is only for reference as the SendTweet example does not work anymore and is not included in the
latest library.
#define WLAN_SSID "yourNetwork" // cannot be longer than 32 characters!
#define WLAN_PASS "yourPassword"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 35 of 46
Here‘s a sample ofthe Serial Monitor oulput of SendTweet. Vou should see somemlng similar:
Here's a sample of the Serial Monitor output of SendTweet. You should see something similar:
Hello! Initializing CC3000...Firmware V. : 1.19
OK
Deleting old connection profiles...OK
Connecting to network...Started AP/SSID scan
Connecting to Turlingdrome...Waiting to connect...OK
Requesting address from DHCP server...OK
IP Addr: 192.168.0.4
Netmask: 255.255.255.0
Gateway: 192.168.0.1
DHCPsrv: 192.168.0.1
DNSserv: 192.168.0.1
Locating time server...found
Connecting to time server...
Connect to 155.101.3.115:123
connected!
Issuing request...OK
Awaiting response...success!
Locating Twitter server...OK
Connecting to server...
Connect to 199.59.150.9:80
OK
Issuing HTTP request...OK
Awaiting response...success!
Waiting ~1 hour...
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 36 of 46
Firmware Upgrades
The CC3000 is a complex chip that has its own firmware published by Texas Instruments. You might find it necessary
to upgrade the firmware, for example to use the latest version with recent bug fixes. Luckily it's easy to upgrade (and
downgrade) firmware on the chip using a few included examples in the Adafruit CC3000 Arduino library.
Currently there are two firmware versions provided in the library:
Version 1.12 - This is a minor bug fix release with release notes here (https://adafru.it/dVA).
The 1.12 and earlier firmware versions are known to have problems with heavy load and certain network
conditions which can cause the CC3000 to lock up. Consider upgrading to the more recent 1.13 release if
you run into stability issues.
Version 1.13 - This is another bug fix release with release notes here (https://adafru.it/dVA).
The 1.13 release has a fix for internal CC3000 issues which cause lock ups under heavy usage and certain
network conditions. However note that the 1.13 release also appears to have bugs with UDP
traffic (https://adafru.it/dVB). Most internet traffic uses TCP instead of UDP so you likely won't run into
problems and should consider upgrading to the latest 1.13 firmware.
Version 1.14 - This is a bug fix release with release notes here (https://adafru.it/dVA).
To upgrade to a specific version first make sure you have the most recent Adafruit CC3000 Arduino
library (https://adafru.it/cFn) installed. If you installed the CC3000 library some time ago make sure to download and
install it again as fixes and new firmware versions are added periodically.
Next make sure your CC3000 is wired to your Arduino and can successfully run CC3000 sketches like buildtest. If
there's a problem communicating with the CC3000 you want to find out before your start the firmware upgrade. Also
be sure you're using a good quality 1 amp or more external power supply and not a computer/laptop USB port to
power the Arduino & CC3000!
Now in the Arduino IDE load one of the driverpatch_X_XX CC3000 examples, where X_XX is the version like
driverpatch_1_13 for version 1.13. Adjust any of the pins to communicate with your Arduino just like you would to run
buildtest. Compile and load the sketch on your Arduino.
Open the serial monitor at 115200 baud and you should see a message such as a the following (try pressing the
Arduino's reset button if you see no message):
Do not power your Arduino & CC3000 from a computer/laptop USB port during a firmware upgrade! You
MUST use an external power supply with at least 1 amp of current capacity. This is to ensure the Arduino and
CC3000 have enough power to operate during the firmware upgrade.
Make sure to run firmware updates using Arduino IDE version 1.0.6 and NOT the later beta versions 1.5.7,
1.5.8, or 1.6. The newer toolchain in the beta versions causes problems with the firmware update process.
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 37 of 46
m [ ] Send Nella, 023000‘ mum mm" um m any key & remm m sun IAutoscrolL BothL&CR v 115200baud v mun (mm m any a, n 7“an m 5137! Rx mm m hvus u Bum 12mm mg mm max ‘77“: xmuflumq m cum mm. m runue m m- 72 Inmmn‘ u: mm“ mm mm mm muse mzu rm nuawmkm m: m m on mm mm m n-27 mum‘s my 0x27 0-27 0.27 0-27 0-2: am am neanwmuur: my my 0.27 um am 0423 am am nunmukxu «us am 0.25, am am ms am am kaawwuz nxzx um um, um, um um um um muwm o-m uxo um am am am. mu, om mammm mm me am ma am am am ma ma "W156 mic msa , msa mm msu um, msn mam-um my; nxsa, ,mw msn can use, msa Punmmmwz 0x50 uxso .mso 0.50 0-50 mo msa mawm me use me mm mm a.» 0.5m Manumulm my: nxsa Lm, um mm mm m; kid MFG-K196 on; me um 0:50 on: an: ms mawumaxx am an: 0.22 ms ms om mauwmzme can on m m m m: on) kanwwuna mu mu ms mu ous m: m: ms: mmmmnm 0 mt: Duals mu :2 bytes w W um. 32 Mus w mm mm :2 by“; w w man :1 mm m mm mm pmu mm, Enver mm mm dnvu nuzh mung m...“ surunw mums nuhea‘ mum v 1 as an Address me am out axsa ma nxra Imowau BothU-CR . uszonnm .
Enter some text and press send to start the firmware upgrade process. The upgrade will happen fairly quickly and
should be done in a minute or two. Here's what you should see during an upgrade:
After the upgrade finishes load the buildtest example and run it again. Confirm that everything works as expected with
the connection to your wireless network and ping of adafruit.com. Congratulations you've upgraded the firmware on
the CC3000!
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 38 of 46
Note: The version number displayed during the firmware upgrade and from sketches like buildtest includes the major,
minor, and patch numbers so it doesn't exactly match the version number from TI. Here's a handy conversion between
reported version number and CC3000 firmware version:
Buildtest reports version 1.32 = CC3000 firmware v1.14
Buildtest reports version 1.28 = CC3000 firmware v1.13
Buildtest reports version 1.26 = CC3000 firmware v1.12
Buildtest reports version 1.24 = CC3000 firmware v1.11
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 39 of 46
on T I 1-: mm" Immlu nu: Mum
Downloads
Files & Downloads
For more information on the CC3000, check out TI's product page (https://adafru.it/cHf) and wiki
microsite (https://adafru.it/cHg), its got tons and tons of information about their WiFi module
EagleCAD PCB files for the breakout on GitHub (https://adafru.it/reZ)
EagleCAD PCB files for the shield on GitHub (https://adafru.it/rf0)
Fritzing objects available in Adafruit Fritzing library (https://adafru.it/aP3)
List of wifi access points used to test the CC3000 (by TI, not verified by Adafruit) (https://adafru.it/rxe)
Using an Apple Airport? Check this thread for details on how to set it up for use with the
CC3000 (https://adafru.it/rxf)
Schematic for the CC3000 breakout board v1.0 (no buffer on the MISO pin)
Schematic for v1.1 with a buffer on MISO
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 40 of 46
EM l EB!!! iiiiii a 1 z 1 .L‘Ifil‘fi' fl . um I: HRDUINO nu: mm: on: M m moan mm: an W rum «mum: an” In:- m
Schematic for the CC3000 shield
Dimensional diagram for the CC3000 breakout
The dimentions are the same for v1 and v1.1
Inches:
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 41 of 46
mm:
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 42 of 46
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 43 of 46
FAQ
I'm using WEP - how do I configure my HEX passphrase?
If your passphrase is a series of HEX digits, you can't simply enter it as a literal string. Instead you have to define is
as an actual binary sequence.
For example, if your passphrase is 8899aabbccdd, you would define it as follows (note the 0x00 at the end! It's
important!):
I'm using WEP and I tried that but it still doesn't work
Make sure you have WLAN_SECURITY defined as WEP:
What is the gain of the ceramic antenna? How does it compare to the external antennas?
We use the Johannson 2500AT44M0400 which has 0.5 dBi gain. Compare this to the external antennas with 2 dBi
and 5dBi. Since antenna 'range' is not linear with the gain and antenna range has
a lot to do
with what else is
transmitting or receiving, physical barriers, noise, etc. We can roughly say that the ceramic antenna has half the
range of the 2dBi antenna, and the 5dBi antenna has double the range of the 2dBi antenna
(roughly!)
There is no way to know the actual range you will get unless you experiment with your setup since there is so many
variables, but the ceramic antenna gets about the same range we expect with an every day cellphone
How can I use the CC3000 with a static IP?
WiFi device IPs are dynamic 99% of the time, but it is possible to assign a static IP if your router permits it. Check out
this forum post for how to go about it
I'm having difficulty seeing/connecting to my network...
If you have an '802.11n only' router please configure it to add 'b or g' support. The CC3000 is 802.11b or g only, it
does not do 'n'!
I'm not in the USA and my CC3000 can't see my router
The CC3000 only operates on channels 1 through 11. Outside of the United States, you may be able to configure
your router to a channel number outside of that range. Make sure your router is configured for a channel in the
range 1 through 11.
My CC3000 sketch locks up when initializing the CC3000...
A lockup during initialization is a very common issue when there isn't enough power to supply both the Arduino and
CC3000 board. Make sure you're powering the Arduino from a 1 amp or higher rated external power supply. Don't
try to power the Arduino from a computer/laptop USB port because those ports typically can't provide enough
power and will cause lockups!
If you're using an Arduino UNO you can plug in a 7-12 volt power supply to the barrel jack on the board. A supply
// #define WLAN_PASS "8899aabbccdd" //don't do it this way!
//do it this way:
const char WLAN_PASS = {0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0x00};
#define WLAN_SECURITY WLAN_SEC_WEP
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 44 of 46
like this 9V1ampwaH wart is perfect for the Ardu‘mo UNO and CC3000,
like this 9V 1amp wall wart is perfect for the Arduino UNO and CC3000.
Also if your Arduino supports changing the voltage of the digital I/O pins (like some 3rd party Arduino clones), make
sure the voltage is set to 5 volts and not 3.3 volts.
My CC3000 sketch locks up after running for a while or under heavy load...
Unfortunately there is a well known internal issue with the CC3000 which can cause lock ups and instability over
time or under heavy load. This thread on the Spark Core forums dives deeply into the issue and investigation with
Texas Instruments. Ultimately the latest firmware version 1.13 was released with a potential fix for the stability
problems. If you'd like to upgrade to firmware version 1.13 see the page on firmware upgrades in this guide.
How do I set a static IP address?
By default the CC3000 is configured to get an IP address automatically from your router using DHCP. In most cases
this works well, however if you run into trouble getting an IP address or DNS server you should consider setting a
static IP address and DNS server.
To set a static IP address make sure you have the latest version of the CC3000 library and load the buildtest
example. Scroll down to the commented section of code in the setup function which discusses setting a static IP
address:
/*
uint32_t ipAddress = cc3000.IP2U32(192, 168, 1, 19);
uint32_t netMask = cc3000.IP2U32(255, 255, 255, 0);
uint32_t defaultGateway = cc3000.IP2U32(192, 168, 1, 1);
uint32_t dns = cc3000.IP2U32(8, 8, 4, 4);
if (!cc3000.setStaticIPAddress(ipAddress, netMask, defaultGateway, dns)) {
Serial.println(F("Failed to set static IP!"));
while(1);
}
*/
Remove the /* and */ comment delineators and fill in the IP address, net mask, default gateway, and DNS server
values for your network. You might need to check your router's configuration page to find these details.
Run the buildtest sketch and the CC3000 should be configured to use the static IP address and configuration you
assigned. You can actually remove or comment out the IP assignment code because the CC3000 will remember
the configuration in its internal non-volatile storage.
If you'd ever like to enable DHCP again, load buildtest and uncomment the section below the static IP address
configuration:
/*
if (!cc3000.setDHCP()) {
Serial.println(F("Failed to set DHCP!"));
while(1);
}
*/
How do I connect to a college/hotel/airport WiFi network that requires using a web page to authenticate?
Unfortunately these networks are difficult or sometimes impossible for the CC3000 to connect to because they
© Adafruit Industries https://learn.adafruit.com/adafruit-cc3000-wifi Page 45 of 46
require using a web browser to authenticare with me network However a coup‘e options m pursue are:
require using a web browser to authenticate with the network. However a couple options to pursue are:
Try contacting the network support team / administrator and see if they can allow the CC3000 onto the
network based on its MAC address. When you run the buildtest sketch it will print out the CC3000 MAC
address so you can copy it from there. This option is the easiest and most reliable way to get onto the
network, but might not be available depending on the network's policies.
The second option is to clone the MAC address of a laptop or device you've gotten on the network already.
For this you'll want to find the MAC address of the laptop/computer (usually in network settings, search online
to get a direct answer depending on the OS you're using). Then uncomment and adjust the commented code
in the setup function of the buildtest example which sets the MAC address of the CC3000. Fill in your
laptop/computer's MAC address and run the sketch to have the CC3000 start using the provided MAC
addres. Unfortunately at this point you have to turn off the cloned laptop/computer or at least disconnect it
from the network because two devices with the same MAC can't be on the network at the same time (they'll
get confused and start seeing each other's traffic).
I'm using the IPAddress class or an example from the Ethernet library and it doesn't work, what's wrong?
The IPAddress class is not compatible with the IP addresses the CC3000 classes expect. However you can switch
to using the CC3000.IP2U32 function to generate an IP address. See this line in the buildtest example for how to
use this function, and what type to use to store the IP address (an unsigned 32-bit integer). Unfortunately the
Arduino compiler will try to convert an IPAddress into this type so ethernet library code might compile, but when the
code actually runs it will fail because the data is not in the right order. Stick to using the IP2U32 function!
© Adafruit Industries Last Updated: 2018-08-22 03:37:02 PM UTC Page 46 of 46

Products related to this Datasheet

CC3000 WIFI SHIELD
CC3000 WIFI SHIELD WITH UFL CONN
BREAKOUT WIFI HUZZAH CC3000 ANT
BREAKOUT WIFI CC3000 UFL CONN