From 612654fbc59155d9cfb882cb19add54881ffb6ec Mon Sep 17 00:00:00 2001
From: Agis Zisimatos <azisi@windowslive.com>
Date: Mon, 22 Sep 2014 22:09:21 +0300
Subject: [PATCH] New arduino code with acceleration and fixes

---
 arduino/SatNOGS-V2/SatNOGS-V2.ino | 141 ++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 arduino/SatNOGS-V2/SatNOGS-V2.ino

diff --git a/arduino/SatNOGS-V2/SatNOGS-V2.ino b/arduino/SatNOGS-V2/SatNOGS-V2.ino
new file mode 100644
index 0000000..150917e
--- /dev/null
+++ b/arduino/SatNOGS-V2/SatNOGS-V2.ino
@@ -0,0 +1,141 @@
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <AccelStepper.h>
+
+#define DIR_AZ 18
+#define STEP_AZ 10
+#define DIR_EL 6
+#define STEP_EL 7
+
+#define MS1 9
+#define EN 8
+
+#define SPR 200 //Step Per Revolution
+#define RATIO 60 //Gear ratio
+#define T_DEALY 20000 //Time to disable the motors
+
+/*Global Variables*/
+unsigned long t_DIS = 0; //time to disable the Motors
+/*Define a stepper and the pins it will use*/
+AccelStepper AZstepper(1, STEP_AZ, DIR_AZ);
+AccelStepper ELstepper(1, STEP_EL, DIR_EL);
+
+
+void setup()
+{  
+  /*Change these to suit your stepper if you want*/
+  AZstepper.setMaxSpeed(400);
+  AZstepper.setAcceleration(100);
+  
+  /*Change these to suit your stepper if you want*/
+  ELstepper.setMaxSpeed(400);
+  ELstepper.setAcceleration(100);
+  
+  /*Enable Motors*/
+  pinMode(EN, OUTPUT);
+  digitalWrite(EN, LOW);
+  /*Step size*/
+  pinMode(MS1, OUTPUT);
+  digitalWrite(MS1, LOW); //Full step
+  /*Serial Communication*/
+  Serial.begin(19200);
+}
+
+void loop()
+{ 
+  /*Define the steps*/
+  static int AZstep = 0;
+  static int ELstep = 0;
+  
+  /*Time Check*/
+  if (t_DIS == 0)
+    t_DIS = millis();
+  
+  /*Disable Motors*/
+  if (AZstep == AZstepper.currentPosition() && ELstep == ELstepper.currentPosition() && millis()-t_DIS > T_DEALY)
+    digitalWrite(EN, HIGH);
+  /*Enable Motors*/
+  else
+    digitalWrite(EN, LOW);
+    
+  /*Read the steps from serial*/
+  cmd_proc(AZstep, ELstep);
+  /*Move the Azimuth & Elevation Motor*/
+  stepper_move(AZstep, ELstep);
+}
+
+/*EasyComm 2 Protocol & Calculate the steps*/
+void cmd_proc(int &stepAz, int &stepEl)
+{
+  /*Serial*/
+  static char buffer[256];
+  char incomingByte;
+  static int counter=0;
+  char data[100];
+  
+  /*Read from serial*/
+  while (Serial.available() > 0)
+  {
+    incomingByte = Serial.read();
+    /*new data*/
+    if (incomingByte == '\n' || incomingByte == ' ' || incomingByte == '\r')
+    {
+      buffer[counter]=0;
+      if (buffer[0] == 'A' && buffer[1] == 'Z')
+      {
+        strncpy(data, buffer+2, 100);
+        /*Get the absolute value of angle*/
+        double angleAz = atof(data);
+        /*Calculate the steps*/
+        stepAz = deg2step(angleAz);
+      }
+      else if (buffer[0] == 'E' && buffer[1] == 'L')
+      {
+        strncpy(data, buffer+2, 10);
+        /*Get the absolute value of angle*/
+        double angleEl = atof(data);
+        /*Calculate the steps*/
+        stepEl = deg2step(angleEl);
+      }
+      else if (buffer[0] == 'S' && buffer[1] == 'A')
+      {
+        stepAz = AZstepper.currentPosition();
+      }
+      else if (buffer[0] == 'S' && buffer[1] == 'E')
+      {
+        stepEl = ELstepper.currentPosition();;
+      }
+      counter = 0;
+      /*Reset the disable motor time*/
+      t_DIS = 0;
+    }
+    /*Fill the buffer with incoming data*/
+    else {
+      buffer[counter] = incomingByte;
+      counter++;
+    }
+  }
+}
+
+/*Send pulses to stepper motor drivers*/
+void stepper_move(int stepAz, int stepEl)
+{
+  AZstepper.moveTo(stepAz);
+  ELstepper.moveTo(stepEl);
+    
+  AZstepper.run();
+  ELstepper.run();
+}
+
+/*Convert degrees to steps*/
+int deg2step(double deg)
+{
+  return(RATIO*SPR*deg/360);
+}
+
+/*Convert steps to degrees*/
+double step2deg(int Step)
+{
+  return(360*Step/(SPR*RATIO));
+}
\ No newline at end of file
-- 
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