Diff: main.cpp

Revision:

6:3a4fb916a217

Parent:

5:608f2bf4d3f7

--- a/main.cpp	Thu Feb 06 14:05:51 2014 +0000
+++ b/main.cpp	Wed Aug 26 22:39:41 2020 +0000
@@ -6,23 +6,90 @@
 
 LM75B sensor(p28,p27);
 Serial pc(USBTX,USBRX);
+DigitalIn JoyLeft(p13);
+DigitalIn JoyRight(p16);
+DigitalIn JoyButton(p14);
+DigitalOut AlarmLED(LED1);
 
-int main ()
-{
-
+int main (){
+    lcd.cls();                                                                              //clear LCD screen
+    lcd.locate(0,0);                                                                        //home the lcd screen
+    lcd.printf("Killian's LM75 Temperature Sensor Detection");                              //Text
+    wait(2);                                                                                //pause for visibility
+    int tempselect=0;                                                                       //set temp selection as undetermined
+    
+    while (tempselect==0){                                                                     //while temp selection undetermined
+        lcd.cls();                                                                              //clear LCD screen
+        lcd.locate(0,0);                                                                        //home the lcd screen
+        lcd.printf("Deg. C = Joystick <\nDeg. F = Joystick >\nBoth = Joystick Button");
+        if(JoyLeft==1 and JoyRight==0 and JoyButton==0){
+            lcd.cls();                                                                          //clear LCD screen
+            lcd.locate(0,0);                                                                    //home the lcd screen
+            lcd.printf("Deg. C Selected\nPlease Wait...");                                      //selection text              
+            tempselect=1;                                                                       //ammend selection constant - breaks while loop
+            wait(1);                                                                            //pause for visibility and debounce
+        }
+        else if(JoyLeft==0 and JoyRight==1 and JoyButton==0){
+            lcd.cls();                                                                          //clear LCD screen
+            lcd.locate(0,0);                                                                    //home the lcd screen
+            lcd.printf("Deg. F Selected\nPlease Wait...");                                      //selection text              
+            tempselect=2;                                                                       //ammend selection constant - breaks while loop
+            wait(1);                                                                            //pause for visibility and debounce
+        }
+        else if(JoyLeft==0 and JoyRight==0 and JoyButton==1){
+            lcd.cls();                                                                          //clear LCD screen
+            lcd.locate(0,0);                                                                    //home the lcd screen
+            lcd.printf("Deg. C and Deg. F Selected\nPlease Wait...");                           //selection text              
+            tempselect=3;                                                                       //ammend selection constant - breaks while loop
+            wait(1);                                                                            //pause for visibility and debounce
+        }
+    }
+   
     //Try to open the LM75B
     if (sensor.open()) {
         printf("Device detected!\n");
 
         while (1) {
-            lcd.cls();
-            lcd.locate(0,3);
-            lcd.printf("Temp = %.3f\n", (float)sensor);
-            wait(1.0);
-        }
+            /* setting temperature range as between 0C and 30C, or 32F to 86F, using y=mx+c.
+            for Celsius tempC=30sensor+0
+            for Fahrenheit tempF=54sensor+32 */
+            float tempC=30*(float)sensor;                                                         //creating Celsius selection value
+            float tempF=54*(float)sensor+32;                                                      //creating Fahrenheit selection value
+            
+            if(tempselect==1){                                                              //if deg. C selected
+                lcd.cls();                                                                  //clear LCD screen
+                lcd.locate(0,0);                                                            //home LCD screen
+                lcd.printf("Temp = %.1f Deg. C\n", tempC);                                  //print temp info
+                wait(1.0);                                                                  //pause for visibility
+            }
+            else if(tempselect==2){                                                         //if deg. F selected
+                lcd.cls();                                                                  //clear LCD screen
+                lcd.locate(0,0);                                                            //home LCD screen
+                lcd.printf("Temp = %.1f Deg. F\n", tempF);                                  //print temp info
+                wait(1.0);                                                                  //pause for visibility
+            }
+            else if(tempselect==3){                                                         //if both temps selected
+                lcd.cls();                                                                  //clear LCD screen
+                lcd.locate(0,0);                                                            //home LCD screen
+                lcd.printf("Temp = %.1f Deg. C\nTemp = %.1f Deg. F", tempC, tempF);         //print both temp infos
+                wait(1.0);                                                                  //pause for visibility
+            }
+            
+            if(tempC>=27.0){                                                                //High temp alarm set for 27 degrees C or over
+                lcd.cls();                                                                  //clear LCD screen
+                lcd.locate(0,0);                                                            //home LCD screen
+                lcd.printf("Warning - Temperature High Alarm!");                            //display alarm text
+                AlarmLED=1;                                                                 //toggle on alarm LED
+                wait(1);                                                                    //pause while LED lit
+                AlarmLED=0;                                                                 //clear the alarm LED
+            }
+            
+        } // end of while loop
+        
+    } // the end of if statment
+    
+    else {
+        error("Device not detected!\n");
+    } 
 
-    } else {
-        error("Device not detected!\n");
-    }
-
-}
+} // end of main