Diff: main.cpp

Revision:

6:120a0a3ff2e1

Parent:

5:b1e5af95a2fb

--- a/main.cpp	Sun Jul 06 17:24:43 2014 +0000
+++ b/main.cpp	Sun Jul 06 22:17:07 2014 +0000
@@ -1,69 +1,84 @@
 #include "mbed.h"
 #include "mbed_genie.h"
 
-DigitalOut myled(LED1);
-DigitalOut myledr(LED2);
+#define beta 3977 // from the thermistor datasheet
+#define resistance 10 //10k Resistor used in measurement bridge
+
+float tempReading = 0;       // the analog reading from the sensor
+float tempCalc = 0;         // the calculated temperature
+int rockersw_val = 0;         //holds the status of the 4Dbutton0 Object
+int flag = 0;               //flag variable to store rockerswitch state
+
+AnalogIn tempIn(p15);       // thermistor temperature sensor attached to pin 15
 /*
     The Mbed4dGenie class requires 3 parameters
     1 - Tx pin
     2 - Rx pin
     3 - Reset pin
 */
-Mbed4dGenie lcd4d(PTE0,PTE1,PTB9);
+Mbed4dGenie lcd4d(p9,p10,p11 );
+
+void getSensorReading(void)
+{
+    tempReading = (tempIn);    // Read the sensor data from analogue pin 26
+    tempCalc = beta / (log(((resistance / tempReading) - 10.0) / 10.0) + (beta / 298.0)) - 273.0;  // Calcuate the actual temperature
+    if (tempCalc >= 130)
+        tempCalc = 130;
+}
 
 void MyGenieEventHandler(void)
 {
     genieFrame TheEven;
-    while(lcd4d.PendingFrames()){
-        if(lcd4d.genieDequeueEvent(&TheEven))
-        {
-            
-            if( TheEven.reportObject.cmd == GENIE_REPORT_EVENT)
-            {
-                myledr = !myledr; //toggle led when receiving a genie event frame
+    while(lcd4d.PendingFrames()) {
+        if(lcd4d.genieDequeueEvent(&TheEven)) {
+            if( TheEven.reportObject.cmd == GENIE_REPORT_EVENT) {
+                if (TheEven.reportObject.object == GENIE_OBJ_ROCKERSW) { // If the Reported Message was from a rocker switch
+                    if (TheEven.reportObject.index == 0) {
+                        //printf("Rocker switch 0 pressed!\n\r");
+                        rockersw_val = lcd4d.genieGetEventData(&TheEven);  //extract the MSB and LSB values and pass them to rockersw_val
+
+                        if (rockersw_val == 0) {                   //if Rockerswitch0 is off
+                            flag = 0;
+                            //printf("Rocker switch switch in off state\n\r"); //print a serial message for debugging
+                        }
+
+                        else if (rockersw_val == 1) {              //if Rockerswitch0 is on
+                            flag = 1;
+                            //printf("Rocker switch switch in ON state\n\r"); //print a serial message for debugging
+                        }
+                    }
+                }
             }
-            
-            
         }
     }
 }
 
-int main() {
-    int temp = 0;
-    printf("Mbed Genie demo \n\r");
-    lcd4d.Start(); 
+int main()
+{
+    //int temp = 0;
+    printf("Mbed Genie demo with 10k thermistor \n\r");
+    lcd4d.Start();
+    
     lcd4d.genieAttachEventHandler(&MyGenieEventHandler);
- /*
- for example, in this loop we increment the object from 0 to 100
- */
- 
+
     while(1) {
-        if(temp >= 100)
-        {
-            temp = 0;
-        }
-        else
-        {
-            temp++;
+
+        getSensorReading();
+
+        if (flag == 1) {
+            lcd4d.genieWriteObject(GENIE_OBJ_THERMOMETER,0x00,tempCalc);
+
+            tempCalc = tempCalc * 100;
+            lcd4d.genieWriteObject(GENIE_OBJ_LED_DIGITS,0x00,tempCalc);
         }
 
-        //printf("write:%d\n\r",lcd4d.genieWriteObject(GENIE_OBJ_LED_DIGITS,1,temp));
-        int error;
-        error = lcd4d.genieWriteObject(GENIE_OBJ_LED_DIGITS,1,temp);
-        if(error != ERROR_NONE)
+        else if(flag == 0)
+
         {
-            printf("Error is:%d\n\r",error);
+            lcd4d.genieWriteObject(GENIE_OBJ_THERMOMETER,0x00, 0);
+            lcd4d.genieWriteObject(GENIE_OBJ_LED_DIGITS,0x00, 0);
         }
-        
-        myled = 1;
-        //wait(0.05);
-        //printf("read:%d\n\r",lcd4d.genieReadObj(GENIE_OBJ_LED_DIGITS,1));
-        error = lcd4d.genieReadObj(GENIE_OBJ_LED_DIGITS,1);
-        if(error != ERROR_NONE)
-        {
-            printf("Error is:%d\n\r",error);
-        }
-        myled = 0;
-        //wait(0.05);
+
+
     }
-}
+}
\ No newline at end of file