Brian Leong / Mbed 2 deprecated Leong_A4_2_Temp_Light

checking temp and lighting

Dependencies:   mbed

Files at this revision

API Documentation at this revision

Revision 2:29e5e670256b, committed 23 months ago

Comitter:
brianleong
Date:
Thu Dec 01 14:46:00 2022 +0000
Parent:
1:0c173cc105fe
Commit message:
Check if photoresistor is covered

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Thu Dec 01 14:38:54 2022 +0000
+++ b/main.cpp	Thu Dec 01 14:46:00 2022 +0000
@@ -18,7 +18,7 @@
     pc.printf("TempV = %f\r\n",TempV);
     T=-1481.96+sqrt(2196200 + ((1.839-float(TempV))/.00000388));
     pc.printf("Temp  = %3.2f C\r\n",T);
-    TempDiff=T-TempStart;
+    TempDiff=T-TempStart; // Temp Compare
     if (TempDiff<0.0) {
         if (TempDiff<-1) {
             firstLED=1;
@@ -29,7 +29,8 @@
             secondLED=1;
             thirdLED=0;
         }
-    } if (TempDiff>0.0) {
+    }
+    if (TempDiff>0.0) {
         if(TempDiff<1) {
             firstLED=1;
             secondLED=1;
@@ -48,8 +49,13 @@
     pc.printf("PhotoV = %f\r\n",PhotoV);
     CellV=3.3*float(Rs)/float(PhotoV)-float(Rs);
     pc.printf("Resistance = %.2f kohms\r\n",CellV);
+    if (CellV>10) { // toggle LED 4 if covered
+        fourthLED=1;
+    } else {
+        fourthLED=0;
+    }
 }
-void UpdateTemp()
+void UpdateTemp() //button reset inital temp
 {
     if (debounce.read_ms()>200) { // debouce check for button press
         TempV=3.3*Thermistor.read();
@@ -65,13 +71,13 @@
 }
 int main()
 {
-    Input.attach(Run,3);
+    Input.attach(Run,1);
     debounce.start();
     button.rise(&UpdateTemp);
     TempV=3.3*Thermistor.read();
     TempStart=-1481.96+sqrt(2196200 + ((1.839-float(TempV))/.00000388));
 
     while(1) {
-        
+
     }
 }
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