Diff: main.cpp

Revision:

7:cc766c97686a

Parent:

6:9c5c36d2c0e1

--- a/main.cpp	Fri Feb 16 15:57:50 2018 +0000
+++ b/main.cpp	Sat Mar 03 13:35:40 2018 +0000
@@ -55,7 +55,7 @@
     //}
 }
 
-float initialMin()   //Get min value of first two pulses data
+float Min()   //Get min value of two pulses data
 {
     int min = avg_buffer[0];
     for (int i = 0; i < AVG_LEN; i++) {
@@ -66,7 +66,7 @@
     return min;
 }
 
-float initialMax()   //Get max value of first two pulse data
+float Max()   //Get max value of two pulse data
 {
     int max = avg_buffer[0];
     for (int i = 0; i < AVG_LEN; i++) {
@@ -98,8 +98,8 @@
             intialised= true;
 
             //Get inital min and max
-            max = initialMax();
-            min = initialMin();
+            max = Max();
+            min = Min();
 
         }
 
@@ -111,8 +111,8 @@
 
         avg_write = avg_write%AVG_LEN;          //Ensure avg_write wraps around
 
-        max = initialMax();
-        min = initialMin();
+        max = Max();
+        min = Min();
         float trendedData = data - (avg_sum/AVG_LEN);
         float offsetData = trendedData+OFFSET;
         return offsetData; //Remove trendline
@@ -149,19 +149,19 @@
 void detectPulse(float normalisedData)   //Turn on LED during high part of pulse
 {
     // Implementation of hysteresis
-    if(triggered) {
-        if (below_trig_low(normalisedData)) {
+    if(triggered) {  //Previously bove high trigger
+        if (below_trig_low(normalisedData)) {  //If it drops below ,ow trigger point
             triggered = false;
             pulse = 0;
-        } else {
+        } else { //Still above low trigger
             pulse = 1;
         }
     } 
-    else {
-        if (above_trig_high(normalisedData)) {
+    else { //Previously below low trigger
+        if (above_trig_high(normalisedData)) {//If it goes above high trigger point
             triggered = true;
             pulse = 1;
-        } else {
+        } else { //Still below high trigger
             pulse = 0;
         }
     }