From fd544aa03bbd889b8b156bde73c2e62c3b7afa9a Mon Sep 17 00:00:00 2001
From: JeffersGlass <glass.jeffrey@gmail.com>
Date: Mon, 21 Sep 2015 15:58:33 -0500
Subject: [PATCH] Added encoder coding to main prog.

---
 VFO.ino => VFO/VFO.ino | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)
 rename VFO.ino => VFO/VFO.ino (77%)

diff --git a/VFO.ino b/VFO/VFO.ino
similarity index 77%
rename from VFO.ino
rename to VFO/VFO.ino
index 398cd45..442d391 100644
--- a/VFO.ino
+++ b/VFO/VFO.ino
@@ -21,6 +21,8 @@ int stepIndex = 0;
 long lastButtonPress[] = {0,0,0,0,0};
 boolean buttonActive[] = {false, false, false, false, false};
 
+long encoderPosition = 0;
+
 const long MIN_FREQ = 8500;
 const long MAX_FREQ = 150000000;
 
@@ -40,10 +42,15 @@ Si5351 si5351;
 //SCL is on pin A5 for Arduino Uno
 
 //--------Tuning Knob Interrupt Pins-------//
-//Encoder knob(2, 3);
-const int PIN_BUTTON_UP = 2;
-const int PIN_BUTTON_DOWN = 3;
-const int PIN_BUTTON_STEP = 4;
+//Encoder knob(2, 3), pushbutton on 1
+
+Encoder encoder(2, 3);
+const int PIN_BUTTON_ENCODER = 1;
+
+//Button Pins//
+const int PIN_BUTTON_UP = 4;
+const int PIN_BUTTON_DOWN = 5;
+const int PIN_BUTTON_STEP = 6;
 const int BUTTON_DEBOUNCE_TIME = 10; //milliseconds
 
 void setup(){
@@ -74,10 +81,16 @@ void setup(){
 void loop(){
   displayInfo();
   delay(200);
-  
-  if (checkButtonPress(PIN_BUTTON_UP)){currFreq += steps[stepIndex]; currFreq = min(currFreq, MAX_FREQ); si5351.set_freq(currFreq * 100ULL, 0ULL, SI5351_CLK0);}
-  if (checkButtonPress(PIN_BUTTON_DOWN)){currFreq -= steps[stepIndex]; currFreq = max(currFreq, MIN_FREQ); si5351.set_freq(currFreq * 100ULL, 0ULL, SI5351_CLK0);}
-  if (checkButtonPress(PIN_BUTTON_STEP)){stepIndex = (stepIndex + 1) % (MAX_STEP_INDEX+1);}
+
+  //detect whether encoder has changed position
+  long reading = encoder.read();
+  long encoderChange = reading - encoderPosition;
+  encoderPosition = reading;
+
+  //step up or down or change step size, for either button presses or encoder turns
+  if (checkButtonPress(PIN_BUTTON_UP) || (encoderChange > 0)){currFreq += steps[stepIndex]; currFreq = min(currFreq, MAX_FREQ); si5351.set_freq(currFreq * 100ULL, 0ULL, SI5351_CLK0);}
+  if (checkButtonPress(PIN_BUTTON_DOWN) || (encoderChange < 0)){currFreq -= steps[stepIndex]; currFreq = max(currFreq, MIN_FREQ); si5351.set_freq(currFreq * 100ULL, 0ULL, SI5351_CLK0);}
+  if (checkButtonPress(PIN_BUTTON_STEP) || checkButtonPress(PIN_BUTTON_ENCODER)){stepIndex = (stepIndex + 1) % (MAX_STEP_INDEX+1);}
 
 }