Diff: main.cpp

Revision:

2:a17516deccae

Parent:

1:459034942ff5

Child:

3:0c35cd39b8b1

--- a/main.cpp	Mon Jul 13 13:00:39 2020 +0000
+++ b/main.cpp	Mon Jul 13 14:41:30 2020 +0000
@@ -4,8 +4,8 @@
 
 C12832 lcd(p5, p7, p6, p8, p11);
 Serial pc(USBTX, USBRX); // tx, rx
-float value;
-float weight;
+float value;  //measured value
+float weight; //process variable
 AnalogIn  pot1(p19);
 DigitalOut led1(LED1);
 DigitalOut led3(LED3);
@@ -18,9 +18,9 @@
         weight = value*1500 ;
         lcd.locate(0,0);
         lcd.printf("weight %.2f", weight);
-        if (weight > 1230 && weight < 1360)
+        if (weight > 1230 && weight < 1360) //process target set point
         {
-        led1 = 1;
+        led1 = 1; //output signal for process beacon and cylinder
         led3 = 0;
         led4 = 0; 
         
@@ -35,7 +35,7 @@
             {
                 led1 = 0;
                 led4 = 0;
-                led3 = 1;
+                led3 = 1; // output signal for Red light on process beacon
             
                 lcd.locate(0,20);
                 lcd.printf("Missing QTY");
@@ -47,7 +47,7 @@
              {
                  led1 = 0;
                  led3 = 0;
-                 led4 = 1;
+                 led4 = 1; // output signal for Blue light on process beacon
                  
                  lcd.locate(0,20);
                  lcd.printf("EXCESS QTY");