MQTT from mbed to node with pressure sensor data retrieval

Dependencies:   EthernetInterface FSR MQTT Queue mbed-rtos mbed

Fork of K64F-RTOS-MQTT-Example by Mike Baylis

Revision:
1:ddf6a1c98d91
Parent:
0:9796509d718e
diff -r 9796509d718e -r ddf6a1c98d91 main.cpp
--- a/main.cpp	Wed Feb 10 18:39:26 2016 +0000
+++ b/main.cpp	Tue May 02 16:49:13 2017 +0000
@@ -3,16 +3,25 @@
 #include "MQTTEthernet.h"
 #include "rtos.h"
 #include "k64f.h"
+#include "FSR.h"
+//#include "queue.h"
+
 
 // connect options for MQTT broker
-#define BROKER "broker.mqttdashboard.com"   // MQTT broker URL
+#define BROKER "10.136.107.229"   // MQTT broker URL
 #define PORT 1883                           // MQTT broker port number
-#define CLIENTID ""                         // use K64F MAC address without colons
+#define CLIENTID "MyMbedClient1"                         // use K64F MAC address without colons
 #define USERNAME ""                         // not required for MQTT Dashboard public broker 
 #define PASSWORD ""                         // not required for MQTT Dashboard public broker
-#define TOPIC ""                            // MQTT topic
+#define TOPIC1 "pressure"                            // MQTT topic
+#define TOPIC2 "motion" 
 
-Queue<uint32_t, 6> messageQ;
+Queue<float, 6> messageQ;
+//Queue  messageQ( 1, 5);
+FSR fsr(PTB2, 10);
+
+//InterruptIn g_button_tap(SW2);
+InterruptIn pressure_in(PTB2);
 
 // LED color control function
 void controlLED(color_t led_color) {
@@ -36,15 +45,12 @@
 }
     
 // Switch 2 interrupt handler
-void sw2_ISR(void) {
-    messageQ.put((uint32_t*)22);
+void on_tap(void) {
+   
+   messageQ.put(fsr.readFSRResistance());
+   
 }
 
-// Switch3 interrupt handler
-void sw3_ISR(void) {
-    messageQ.put((uint32_t*)33);
-}
- 
 // MQTT message arrived callback function
 void messageArrived(MQTT::MessageData& md) {
     MQTT::Message &message = md.message;
@@ -69,9 +75,8 @@
     // turn off LED  
     controlLED(off);
     
-    // set SW2 and SW3 to generate interrupt on falling edge 
-    switch2.fall(&sw2_ISR);
-    switch3.fall(&sw3_ISR);
+    //g_button_tap.fall(&on_tap);
+    pressure_in.fall(&on_tap);
     
     pc.printf("\r\n\r\nWelcome to the K64F MQTT Demo!\r\n");
     pc.printf("\r\nAttempting connect to local network...\r\n");
@@ -115,15 +120,15 @@
     else
         pc.printf("success\r\n");
         
-    char* topic = TOPIC;
+    char* topic = TOPIC1;
     
     // subscribe to MQTT topic
     pc.printf("Subscribing to MQTT topic %s: ", topic);
     if ((rc = client.subscribe(topic, MQTT::QOS0, messageArrived)) != 0)
         pc.printf("failed: rc= %d\r\n", rc);
-        
     else
         pc.printf("success\r\n");
+    
         
     MQTT::Message message;
     char buf[100];
@@ -134,22 +139,16 @@
     message.payloadlen = strlen(buf)+1;
     
     while(true) {
+              
         osEvent switchEvent = messageQ.get(100);
         
-        if (switchEvent.value.v == 22 || switchEvent.value.v == 33) {
-            switch(switchEvent.value.v) {
-                case 22 :
-                    sprintf(buf, "sw2");
-                    break;
-                case 33 :
-                    sprintf(buf, "sw3");
-                    break;
-            }
+        if (switchEvent.value.v > 3000) 
+        {
+            sprintf(buf, "message");
             pc.printf("Publishing MQTT message: %.*s\r\n", message.payloadlen, (char*)message.payload);
             rc = client.publish(topic, message);
             client.yield(100);
         }
-        
         else {
             client.yield(100);
         }