Avnet / Mbed 2 deprecated Avnet_ATT_Cellular_IOT

This program connects to a few sensors via I2C and sends the data collected to a WNC Cellular Module which is located on an Avnet WNC-Shield card.

Dependencies:   FXOS8700CQ MODSERIAL mbed

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Avnet Cellular IoT Instructions

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

Useful Links

Adding Additional Sensors

The FLOW_DEVICE_NAME field must contain the name of the instance of the Virtual Starter Kit in FLOW you will be communicating with. Usually this is "vstarterkit001", but if you have problems communicating you can verify this is correct. Note: 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 as the DEVICE SERIAL field under Devices as in the image below. /media/uploads/JMF/vstarterkit.png

Sensors: When executing, the FRDM-K64F board uploads 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 reports 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 onboard 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 are 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” are also sent. To enable all these sensors, change the assignment to: iSensorsToReport = TEMP_HUMIDITY_ACCELEROMETER_PMODSENSORS;

Connecting 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 followed:

SignalJ10ShieldPMOD Color in the image below
VCCPin 6Pin 6Red
GNDPin 5Pin 5Black
SDAPin4Pin 3Green
SCLPin3Pin 2Yellow

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AT&T M2X and FLOW Instructions

M2X & FLOW Instructions

Link to AT&T M2X

M2X

Link to AT&T Flow

FLOW

Avnet WNC-Shield Information

Getting Started with the Avnet WNC-Shield 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

Inside the mbed Avnet_ATT_Cellular_IOT project, the parameters needed to customize your board are in the config_me.h file.

  • FLOW parameters: This project assumes you are using a fork of the Starter Kit Base project, which is a reference design created using AT&T’s FLOW (https://flow.att.com) that allows the creation of online 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, URL information that is specific to your instance is displayed. 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. The rest of the base URL, in green above, 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 compiles your project and links 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

Diff: xadow_gps.cpp

Revision:
69:5a3414cc7531
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xadow_gps.cpp	Thu Aug 11 04:38:02 2016 +0000
@@ -0,0 +1,303 @@
+/* ===================================================================
+Copyright © 2016, AVNET Inc.  
+
+Licensed under the Apache License, Version 2.0 (the "License"); 
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, 
+software distributed under the License is distributed on an 
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+either express or implied. See the License for the specific 
+language governing permissions and limitations under the License.
+
+======================================================================== */
+
+#include "mbed.h"
+#include "xadow_gps.h"
+#include "hardware.h"
+
+//  Xadow code based on Eclipse test project at
+//  https://github.com/WayenWeng/Xadow_GPS_v2_test/
+
+//  These first 3 routines are to allow the mbed I2C to be used instead of what was in the Eclipse test code
+void dlc_i2c_configure(int slave_addr, int speed)
+{ 
+} //dlc_i2c_configure
+
+unsigned char dlc_i2c_receive_byte(void)
+{
+    char rxbuffer [1];
+    i2c.read(GPS_DEVICE_ADDR, rxbuffer, 1 );
+    return (unsigned char)rxbuffer[0];
+} //dlc_i2c_receive_byte()
+
+unsigned char dlc_i2c_send_byte(unsigned char ucData)
+{
+    int status;
+    char txbuffer [1];
+    txbuffer[0] = (char)ucData;
+    status = i2c.write(GPS_DEVICE_ADDR, txbuffer, 1, false); //true: do not send stop
+    return status;
+} //dlc_i2c_send_byte()
+ 
+
+unsigned char gps_check_online(void)
+{
+    unsigned char data[GPS_SCAN_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_SCAN_ID);
+
+    for(i=0;i<(GPS_SCAN_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    if(data[5] == GPS_DEVICE_ID)
+    return 1;
+    else return 0;
+}
+ 
+unsigned char gps_utc_date_time[GPS_UTC_DATE_TIME_SIZE] = {0};
+
+unsigned char* gps_get_utc_date_time(void)
+{
+    unsigned char data[GPS_UTC_DATE_TIME_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_UTC_DATE_TIME_ID);
+ 
+    for(i=0;i<(GPS_UTC_DATE_TIME_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    for(i=0;i<GPS_UTC_DATE_TIME_SIZE;i++)
+    gps_utc_date_time[i] = data[i+2];
+
+    return gps_utc_date_time;
+} 
+
+unsigned char gps_get_status(void)
+{
+    unsigned char data[GPS_STATUS_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_STATUS_ID);
+    for(i=0;i<(GPS_STATUS_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    return data[2];
+} 
+
+float gps_get_latitude(void)
+{
+    char data[GPS_LATITUDE_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_LATITUDE_ID);
+    for(i=0;i<(GPS_LATITUDE_SIZE+2);i++)
+    {
+        data[i] = (char)dlc_i2c_receive_byte();
+    }
+
+    return atof(&data[2]);
+}
+
+unsigned char gps_get_ns(void)
+{
+    unsigned char data[GPS_NS_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_NS_ID);
+    for(i=0;i<(GPS_NS_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    if(data[2] == 'N' || data[2] == 'S')return data[2];
+    else return data[2] = '-';
+
+}
+
+float gps_get_longitude(void)
+{
+    char data[GPS_LONGITUDE_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_LONGITUDE_ID);
+    for(i=0;i<(GPS_LONGITUDE_SIZE+2);i++)
+    {
+        data[i] = (char)dlc_i2c_receive_byte();
+    }
+
+    return atof(&data[2]);
+}
+
+unsigned char gps_get_ew(void)
+{
+    unsigned char data[GPS_EW_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_EW_ID);
+    for(i=0;i<(GPS_EW_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    if(data[2] == 'E' || data[2] == 'W')return data[2];
+    else return data[2] = '-';
+}
+
+float gps_get_speed(void)
+{
+    char data[GPS_SPEED_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_SPEED_ID);
+    for(i=0;i<(GPS_SPEED_SIZE+2);i++)
+    {
+        data[i] = (char)dlc_i2c_receive_byte();
+    }
+
+    return atof(&data[2]);
+}
+
+float gps_get_course(void)
+{
+    char data[GPS_COURSE_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_COURSE_ID);
+    for(i=0;i<(GPS_COURSE_SIZE+2);i++)
+    {
+        data[i] = (char)dlc_i2c_receive_byte();
+    }
+
+    return atof(&data[2]);
+}
+
+unsigned char gps_get_position_fix(void)
+{
+    unsigned char data[GPS_POSITION_FIX_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_POSITION_FIX_ID);
+    for(i=0;i<(GPS_POSITION_FIX_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    return data[2];
+}
+
+unsigned char gps_get_sate_used(void)
+{
+    unsigned char data[GPS_SATE_USED_SIZE+2];
+    unsigned char i;
+    unsigned char value;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_SATE_USED_ID);
+    for(i=0;i<(GPS_SATE_USED_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    if(data[3] >= '0' && data[3] <= '9')value = (data[3] - '0') * 10;
+    else value = 0;
+    if(data[2] >= '0' && data[2] <= '9')value += (data[2] - '0');
+    else value += 0;
+
+    return value;
+}
+
+float gps_get_altitude(void)
+{
+    char data[GPS_ALTITUDE_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_ALTITUDE_ID);
+    for(i=0;i<(GPS_ALTITUDE_SIZE+2);i++)
+    {
+        data[i] = (char)dlc_i2c_receive_byte();
+    }
+
+    return atof(&data[2]);
+}
+
+unsigned char gps_get_mode(void)
+{
+    unsigned char data[GPS_MODE_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_MODE_ID);
+    for(i=0;i<(GPS_MODE_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    return data[2];
+}
+
+unsigned char gps_get_mode2(void)
+{
+    unsigned char data[GPS_MODE2_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_MODE2_ID);
+    for(i=0;i<(GPS_MODE2_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    return data[2];
+}
+
+unsigned char gps_get_sate_in_veiw(void)
+{
+    unsigned char data[GPS_SATE_IN_VIEW_SIZE+2];
+    unsigned char i;
+
+    dlc_i2c_configure(GPS_DEVICE_ADDR, 100);
+
+    dlc_i2c_send_byte(GPS_SATE_IN_VIEW_ID);
+    for(i=0;i<(GPS_SATE_IN_VIEW_SIZE+2);i++)
+    {
+        data[i] = dlc_i2c_receive_byte();
+    }
+
+    return data[2];
+}