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"}

Files at this revision

API Documentation at this revision

Revision 33:fa964b8b3b19, committed 2016-07-22

Comitter:
fkellermavnet
Date:
Fri Jul 22 17:12:26 2016 +0000
Parent:
32:1e052a3e73fe
Child:
34:1a4498e3580e
Commit message:
20mS between AT command, still see NO response from WNC occasionally. Increased delay now to 40mS, so far so good.

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Fri Jul 22 16:22:17 2016 +0000
+++ b/main.cpp	Fri Jul 22 17:12:26 2016 +0000
@@ -38,6 +38,8 @@
 #define MDM_DBG_AT_CMDS                         (1 << 0)
 int mdm_dbgmask = MDM_DBG_OFF;
 
+#define WNC_WAIT_FOR_AT_CMD_MS 40
+
 Serial         pc(USBTX, USBRX);
 SerialBuffered mdm(PTD3, PTD2, 128);
 DigitalOut led_green(LED_GREEN);
@@ -94,7 +96,7 @@
 
 int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) {
     // Per WNC wait:
-    wait_ms(20);
+    wait_ms(WNC_WAIT_FOR_AT_CMD_MS);
 
     if (cmd && strlen(cmd) > 0) {
         if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
@@ -191,7 +193,7 @@
     size_t n = strlen(cmd);
 
     // Per WNC wait:
-    wait_ms(20);
+    wait_ms(WNC_WAIT_FOR_AT_CMD_MS);
 
     if (cmd && n > 0) {
         if (mdm_dbgmask & MDM_DBG_AT_CMDS) {