Adding the base library files.

Author: finnkuusisto

Devlpr.cpp

@@ -0,0 +1,46 @@
+#include "Arduino.h"
+#include "Devlpr.h"
+
+Devlpr::Devlpr()
+{
+    bufInd = 0;
+    emgPin = A0;
+}
+
+void Devlpr::tick()
+{
+    // check the current time
+    unsigned long currMicros = micros();
+    unsigned long microsDelta = currMicros - lastTickMicros;
+    // go through each function and see if we need to run it
+    // accrue micros on the micros since last run
+    microsSinceEMG += microsDelta;
+    // now see if enough time has passed to run this bad boy
+    // keep in mind that the schedule is in millis vs micros
+    if (microsSinceEMG > MICROS_SCHED_EMG) {
+        readEMG();
+        // and update micros since
+        microsSinceEMG = 0;
+        // NOTE do we want to do some sort of remainder on
+        // NOTE the micros - ie do we want to play catch up
+        // NOTE or just make a best effort to run on sched?
+    }
+    // just pretend no time has passed since function start
+    lastTickMicros = currMicros;
+}
+
+int Devlpr::lastValue()
+{
+    return buf[bufInd];
+}
+
+void Devlpr::readEMG()
+{
+    buf[bufInd] = analogRead(emgPin);
+    Serial.println(buf[bufInd]);
+    bufInd++;
+    // circular buffer
+    if (bufInd > BUFSIZE) {
+        bufInd = 0;
+    }
+}

Devlpr.h

@@ -0,0 +1,25 @@
+#ifndef Devlpr_h
+#define Devlpr_h
+
+#include "Arduino.h"
+
+class Devlpr
+{
+    public:
+        Devlpr();
+        void tick();
+        int lastValue();
+    private:
+        // general buffer bookkeeping
+        static const byte BUFSIZE = 129;
+        byte bufInd;
+        int buf[BUFSIZE];
+        unsigned long lastTickMicros = 0;
+        // emg tracking
+        unsigned long MICROS_SCHED_EMG = 1000;
+        void readEMG();
+        int emgPin;
+        unsigned long microsSinceEMG;
+};
+
+#endif

libdevlpr_test.ino

@@ -0,0 +1,11 @@
+#include "Devlpr.h"
+
+Devlpr devlpr;
+
+void setup() {
+    Serial.begin(9600);
+}
+
+void loop() {
+    devlpr.tick();
+}