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

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_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

{"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:

{"LED":"Red"}

{"LED":"Green"}

{"LED":"Blue"}

--- a/sensors.cpp	Thu Jul 28 15:52:37 2016 +0000
+++ b/sensors.cpp	Thu Jul 28 17:21:31 2016 +0000
@@ -471,17 +471,22 @@
     //}
 } //ProcessUsbInterface()
 
-void pcrx_callback() //Rx interrupt for USB serial port
+// This function is called when a character goes into the RX buffer.
+void UsbUartRxCallback(MODSERIAL_IRQ_INFO *info) 
 {
-    // Note: you need to actually read from the serial to clear the RX interrupt
-    usb_uart_rx_buff[usb_uart_rx_buff_putptr++] = pc.getc();
+    // Get the pointer to our MODSERIAL object that invoked this callback.
+    MODSERIAL *pc = info->serial;
+    while (pc->readable())
+    {
+        usb_uart_rx_buff[usb_uart_rx_buff_putptr++] = pc->getcNb();
+    }
 }
 #endif
  
 void sensors_init(void)
 {
 #ifdef USE_VIRTUAL_SENSORS
-    pc.attach(&pcrx_callback);
+   pc.attach(&UsbUartRxCallback, MODSERIAL::RxIrq);
 #endif
     Init_Si7020();
     Init_Si1145();