Merge branch 'feature_polling' into develop

Matlab/determineArduinoUnoInterruptSettings.m

@@ -22,7 +22,7 @@
 ## Author: Loic <Loic@LAPTOP-1F7SF0F7>
 ## Created: 2023-04-28
 
-function sol = determineArduinoUnoInterruptSettings (Fs, bitSize)
+function [sol, CMR] = determineArduinoUnoInterruptSettings (Fs, bitSize)
 
 freqClock = 16*10^6;
 preDiv8 = [1, 8, 64, 256, 1024];
@@ -34,12 +34,13 @@ elseif bitSize == 8
 endif 
 
 sol = [];
+CMR = [];
 itr = 1;
 
 for i = 1:length(preDiv)  
-  CMR = freqClock/(preDiv(i)*Fs)-1;
-  if round(CMR)-CMR == 0 && CMR < (2^bitSize -1)
-    CMR
+  cmr = freqClock/(preDiv(i)*Fs)-1;
+  if round(cmr)-cmr == 0 && cmr < (2^bitSize -1)
+    CMR(itr) = cmr;
     sol(itr) = preDiv(i);
     itr ++;
   endif

Matlab/testArduinoUnoInterruptSettings.m

@@ -2,7 +2,7 @@ clear all
 close all
 clc
 
-Fs = 2000; %Hz
-bitSize = 8; %bitset
+Fs = 100; %Hz
+bitSize = 16; %bitset
 
-determineArduinoUnoInterruptSettings (Fs, bitSize)
+[preDivisor, CMR] = determineArduinoUnoInterruptSettings (Fs, bitSize) %any of the pair of solutions work here

polling/polling.ino

@@ -0,0 +1,53 @@
+int const Fs = 20;
+int const N = 100;
+int const timePeriod = 1000/Fs; //for delay
+int const clockFreq = pow(10, 6);
+
+int mySensor = A0;
+
+double myPeriods[N];
+double Avg;
+double stDev;
+
+int itr = 0;
+float timeStart = 0;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+    timeStart = micros();
+    int myValue = analogRead(mySensor);
+    int readTime = timeStart - micros();
+    delay(timePeriod-readTime/1000);
+    
+    myPeriods[itr] = micros() - timeStart;
+    Serial.println(myPeriods[itr]);
+    
+    //calculating the std and mean
+    itr++;
+    if (itr == N){
+      double sum = 0;
+      for (int i = 0; i < N; i++){
+        sum = sum + myPeriods[i];
+      }
+      Avg = sum/100;
+      int i = 0;
+      double sumSTD = 0;
+      while (i < N){
+        sumSTD = sumSTD + (myPeriods[i]-Avg)*(myPeriods[i]-Avg);
+        i++;
+      } 
+      stDev = sqrt(sum/N);
+      Serial.print("Average = ");
+      Serial.print(Avg/1000);
+      Serial.println("ms");
+      Serial.print("Standard Deviation = ");
+      Serial.print(stDev/1000);
+      Serial.println("ms");
+      while(1);
+    }
+}