This program simply connects to a HTS221 I2C device to read Temperature & Humidity, and a WNC Cellular Module both of which are on the Avnet WNC Shield.

Dependencies:   mbed FXOS8700CQ

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AT&T Shape Hackathon QuickStart Instructions

  • One area that has been problematic is setting the the MY_SERVER_URL. When you copy the URL from the flow, you must make sure that the MY_SERVER_URL is also set to the appropirate server. It can be either "run-east.att.io" or "run-west.att.io", so be sure to check this.

Useful Links

Adding Additional Sensors

The FLOW_DEVICE_NAME field must contain the name of the instance of the Virtual Starter kit in FLOW that you will be communicating with. Usually this will be "vstarterkit001", but if you have problems communicating you can verify that this is indeed correct. Note that this device will not be created until you click the “Initialize” input on the Virtual Device tab of the Starter Kit project in FLOW. At that point it becomes available in M2X and you can see it there, as the DEVICE SERIAL field under Devices as in the image below.

Sensors: When executing, the FRDM-K64F board will upload sensor measurements to AT&T’s Flow environment every 5 seconds, using the Cellular shield board. You can adjust how often you want to do this by editing the SENSOR_UPDATE_INTERVAL_MS value in the header file. Temperature and humidity: By default the board will report readings from the HTS221 temperature and humidity sensor. These two values are sent to the HTTP IN /climate port in FLOW with field names “temp” and “humidity”. Temperature is in degrees Fahrenheit and humidity is a %. This default assignment is: iSensorsToReport = TEMP_HUMIDITY_ONLY;

Accelerometer: If you want to expand and use the on-board motion sensor, you can also send 3-axis accelerometer information from the board as “accelX”, “accelY” and “accelZ”. This is useful if you want to know the stationary position of the board with regards to gravity, or whether it is in motion. These readings are in g’s. To send these values, change the assignment to: iSensorsToReport = TEMP_HUMIDITY_ACCELEROMETER;

PMOD Sensors: If you have a Silicon Labs sensor module that can plug into the PMOD connector on the Cellular shield, you will also be able to measure proximity, UV light, ambient visible and infrared light from the Si1145 sensor. This PMOD also has a temperature and humidity sensor, but in this case it is redundant. When enabled, the fields “proximity”, “light_uv”, “light_vis” and “light_ir” will also be sent. To enable all these sensors, change the assignment to: iSensorsToReport = TEMP_HUMIDITY_ACCELEROMETER_PMODSENSORS;

Connecting up the PMOD sensors: Because the pinouts do not align, the SiLabs PMOD sensor board cannot be plugged into the J10 PMOD receptacle on the shield directly. The following wiring instructions must be used:

Signal=J10=(Shield) PMOD=Color in the image below
VCCPin 6Pin 6Red
GNDPin 5Pin 5Black
SDAPin4Pin 3Green
SCLPin3Pin 2Yellow

Link to AT&T M2X

M2X

Link to AT&T Flow

FLOW

Avnet WNC-Shield Information

Getting Started with the Avnet WNC-Shield & Hackathon software

  • This project uses Revision 119 of the MBED library because of I2C implementation differences with the tip (Revision 121)
  • This project uses Revision 4 of the FXOS8700CQ library for sensors

Easily modifiable parameters in source code

Inside the mbed “AvnetATT_shape_hackathon” project, the parameters that are needed to customize your board are in the config_me.h file.

  • FLOW parameters: This project assumes that you are using a fork of the “Starter Kit Base” project, which is a reference design that was created using AT&T’s FLOW (https://flow.att.com) that allows the creation of on-line virtualization and other IoT functionality. The default parameters in the config_me.h file are done for a specific instance of this project. When you fork the original project, you get your own instance and it will have its own base address. At the bottom of the FLOW environment, when you click on the “Endpoints” tab, you will see the URL information that is specific to your instance. Of note is the Base URL. In the example below (as in the default mbed project), the Base URL is: https://run-west.att.io/1e464b19cdcde/774c88d68202/86694923d5bf28a/in/flow You have to take note of two parts of this address. The run-west.att.io part is the server URL, and you have to make sure the
  • MY_SERVER_URL field in config_me.h matches this. Then there is the rest of the base URL, in green above, that needs to be pasted into the FLOW_BASE_URL field.

There is also a FLOW_INPUT_NAME field. This should match the name of the HTTP IN port in the FLOW project that you want to send sensor data to. The default is "/climate", as in the FLOW image below.

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Where is the binary I compiled

When the COMPILE button is pressed, it will compile your project and link it. The result is placed in the DOWNLOAD folder you use when downloading files from the internet. It will be called AvnetATT_shape_hackathon_K64F.bin.

Additional information on compiling/configuring

Comprehensive instructions can be found at: Quick Start Instructions

Revisions of main.cpp

Revision Date Message Actions
21:d0038d14ee7c 2016-07-13 Cleaned up config_me.h a little and added some comments for the user variables. More comments need to be added. Cleaned up some of my unused debug code at the bottom of main(). File  Diff  Annotate
20:27a4f27254d0 2016-07-13 Set LED to RED for initialization, then BLUE after once the WNC is setup for internet comms, then GREEN after a response comes back from the server.; ; Then the LED is never touched and any incoming flow commands will set the color going forward. File  Diff  Annotate
19:f89baed3bd6f 2016-07-13 Right before the SOCKCONN during the WNC software initialization once in a while the WNC seems to be dropping a char that is sent to it, 'A' specifically. So I put in 2 "AT" commands right before the SOCKCONN and that seems to clean it up. File  Diff  Annotate
18:b08471eb1d1c 2016-07-13 Add a 3 sec delay between afterWNC hardware init is done and before the AT sockets commands are sent to the WNC. File  Diff  Annotate
17:38a8cc0c6ba5 2016-07-13 Updated power-up sequence per WNC. File  Diff  Annotate
16:17c5916f2d12 2016-07-13 Merged LED and JSON changes with power-up changes File  Diff  Annotate
15:61df4a452d38 2016-07-13 Added JSON parsing and displaying the LED color File  Diff  Annotate
14:0c353e212296 2016-07-13 Pulled in Steve Martin's new WNC initialization code.; Also removed the while(1) in case init fails, now it just continues to retry the initialization. File  Diff  Annotate
12:7c94ec5069dc 2016-07-12 Fixed GET string format and added 3 options for the sensors to be read. File  Diff  Annotate
11:e6602513730f 2016-07-12 Fixed I2C issues. ; a) Removed stop between HTS221 address and read; b) The latest MBED uses the slave address differently from the legacy. Stick with the old for now and fixed the HTS221 address to BF instead of 5F.; c) Made I2C definitions externs. File  Diff  Annotate
8:b08ec94d9e9f 2016-07-11 changed to serial File  Diff  Annotate
7:489835c87d95 2016-07-11 Changed device ID to serial File  Diff  Annotate
6:713b4cbf1a7d 2016-07-11 Slowed down enhanced Steve's send cmd, wait for response when sending to the wnc uart. 1mS in between every char now. File  Diff  Annotate
5:3417b6a84ee3 2016-07-11 Fixed get string to work proper with ATT test flow. File  Diff  Annotate
4:f83bedd9cab4 2016-07-11 Added a sensors file that will write the FRDM-K64F motion sensor and the values from the SiLabs PMOD into a structure. File  Diff  Annotate
3:26b3cc155f39 2016-07-10 Stefan added:; 1) Flow_parameters.h; 2) ms timer tick currently expires every 5 seconds; 3) function to parse values into sensor structure File  Diff  Annotate
2:0e2ef866af95 2016-07-10 Adding in WNC code from Fred File  Diff  Annotate
1:af7a42f7d465 2016-07-09 Adding string encode/decode; File  Diff  Annotate
0:9d5134074d84 2016-07-08 Initial version of AT&T_Avnet Shape Hackathon WNC Shield board File  Diff  Annotate