Srdjan Veljkovic / Mbed 2 deprecated Avnet_ATT_Cellular_Pubnub

Pubnub demo for AT&T IoT Starter Kit. Functionally similar to the Flow demo.

Dependencies:   FXOS8700CQ MODSERIAL mbed

http://pubnub.github.io/slides/workshop/pictures/broadcast.png

Pubnub demo for AT&T IoT Starter Kit

This demo is functionally similar to the Flow demo, so you can find general information here: https://developer.mbed.org/users/JMF/code/Avnet_ATT_Cellular_IOT/.

The only difference is that we use Pubnub to publish the measurements and subscribe to receiving the instructions to set the LED.

Settings

Pubnub related settings are:

Pubnub settings in `config_me.h`

PUBNUB_SUBSCRIBE_KEY
PUBNUB_PUBLISH_KEY
PUBNUB_CHANNEL

All are documented in their respective comments.

Pubnub context class

Similar to Pubnub SDKs, we provide a Pubnub context class. It is defined in pubnub.h header file and implemented in pubnub.cpp.

It provides only the fundamental "publish" and "subscribe" methods. They are documented in the header file.

This class is reusable in other code (it is not specific to this demo), it has a very narrow interface to the AT&T IoT cellular modem code. For example of use, you can look at the main() (in main.c).

Sample of published data

Published message w/measurement data

{"serial":"vstarterkit001","temp":89.61,"humidity":35,"accelX":0.97,"accelY":0.013,"accelZ":-0.038}

Don't worry, nobody got burnt, the temperature is in degrees Fahrenheit. :)

Publish a message (from, say, the Pubnub console http://pubnub.com/console) of the form {"LED":<name-of-the-color>} on the channel that this demo listens to (default is hello_world) to turn the LED to that color on the Starter Kit:

Turn LED to red

{"LED":"Red"}

Turn LED to green

{"LED":"Green"}

Turn LED to blue

{"LED":"Blue"}

Diff: sensors.cpp

Revision:
71:45a5e426df81
Parent:
70:24d5800f27be
Child:
72:b500e1507b5f
--- a/sensors.cpp	Thu Aug 11 07:40:45 2016 +0000
+++ b/sensors.cpp	Thu Aug 11 17:04:09 2016 +0000
@@ -425,7 +425,7 @@
 void Init_GPS(void)
 {
     char scan_id[GPS_SCAN_SIZE+2]; //The first two bytes are the response length (0x00, 0x04)
-    I2C_WriteSingleByte(GPS_DEVICE_ADDR, GPS_SCAN_ID, false); //no hold, must do read
+    I2C_WriteSingleByte(GPS_DEVICE_ADDR, GPS_SCAN_ID, true); //no hold, must do read
 
     unsigned char i;
     for(i=0;i<(GPS_SCAN_SIZE+2);i++)
@@ -475,38 +475,45 @@
 
 void Read_GPS()
 {
-    unsigned char gps_quality = 0; //default
-    char sign;
+    unsigned char gps_valid = 0; //default
+    int lat_sign;
+    int long_sign;
     if (bGPS_present)
     {
         if ((gps_get_status() == 'A') && (gps_get_mode2() != '1'))
         {
-            gps_quality = 1;
+            gps_valid = 1;
         }
-        PRINTF("gps_quality           : %d\r\n", gps_quality);
         if (gps_get_ns() == 'S')
         {
-            sign = '-'; //negative number
+            lat_sign = -1; //negative number
+        }
+        else
+        {
+            lat_sign = 1;
+        }    
+        if (gps_get_ew() == 'W')
+        {
+            long_sign = -1; //negative number
         }
         else
         {
-            sign = '\0'; //empty character
+            long_sign = 1;
         }    
-        PRINTF("gps_get_latitude      : %c%f\r\n", sign, gps_get_latitude());
-        if (gps_get_ew() == 'W')
-        {
-            sign = '-'; //negative number
-        }
-        else
-        {
-            sign = '\0'; //empty character
-        }    
-        PRINTF("gps_get_longitude     : %c%f\r\n", sign, gps_get_longitude());
+#if (0)
+        PRINTF("gps_valid             : %d\r\n", gps_valid);
+        PRINTF("gps_get_latitude      : %f\r\n", (lat_sign * gps_get_latitude()));
+        PRINTF("gps_get_longitude     : %f\r\n", (long_sign * gps_get_longitude()));
         PRINTF("gps_get_altitude      : %f meters\r\n", gps_get_altitude());
         PRINTF("gps_get_speed         : %f knots\r\n", gps_get_speed());
         PRINTF("gps_get_course        : %f degrees\r\n", gps_get_course());
-        //sprintf(SENSOR_DATA.Temperature, "%0.2f", CTOF(hts221.readTemperature()));
-        //sprintf(SENSOR_DATA.Humidity, "%02d", hts221.readHumidity());
+#endif
+        sprintf(SENSOR_DATA.GPS_Valid, "%d", gps_valid);
+        sprintf(SENSOR_DATA.GPS_Latitude, "%f", (lat_sign * gps_get_latitude()));
+        sprintf(SENSOR_DATA.GPS_Longitude, "%f", (long_sign * gps_get_longitude()));
+        sprintf(SENSOR_DATA.GPS_Altitude, "%f", gps_get_altitude());
+        sprintf(SENSOR_DATA.GPS_Speed, "%f", gps_get_speed());
+        sprintf(SENSOR_DATA.GPS_Course, "%f", gps_get_course());
     } //bGPS_present
 } //Read_GPS()