actually added some of the changes intended for previous commit

firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/Pyr0_Piezo_Sensor_v2.x.x.ino

@@ -34,8 +34,8 @@
 To change trigger active duration: TRG_D [integer for milliseconds]
 To change gain factor: GAIN_F [integer for gain state - see note*]
 To change ADC hysteresis value: HYST [integer]
-To change sensor input pullup vRef low threshold: VADJ [float value]
-To change comparator trigger high threshold: VCOMP [float value]
+To change sensor input pullup vRef low threshold: VFOL [integer in millivolts]
+To change comparator trigger high threshold: VCOMP [integer in millivolts]
 
 
 These commands should be wrapped in this format:
@@ -43,7 +43,7 @@ These commands should be wrapped in this format:
 
 Examples:
 <GAIN_F, 3> <~ set gain factor to index 3 (6x)
-<VADJ, 2350> <~ set the vref floor to 2.35V
+<VFOL, 2350> <~ set the vref floor to 2.35V
 
 *Note for Gain Factor:
 The gain STATE is representative of these values:
@@ -64,6 +64,7 @@ The gain STATE is representative of these values:
 //#define VERBOSE true
 
 // Headers, variables, and functions
+include <Arduino.h>
 include <EEPROM.h>
 #include "LightChrono.h"
 #include "pP_pins.h"
@@ -104,6 +105,10 @@ void setup() {
   delay(2); // Wait for vref to settle
 
   Serial.println("Initializing Pyr0-Piezo Sensor...");
+
+  restoreConfig();
+
+  adjustGain();
 }
 
 /*------------------------------------------------*/
@@ -123,35 +128,46 @@ void loop() {
     serialInput();
 
     // Set any new parameters from serial input
-    updateParams();
+    if (serialIncoming) {
+      updateParams();
+    }
 
     // Set the amplification gain factor
     adjustGain();
 
     // Check voltage of first and second stages and compare against thresholds
-    adjustVin();
+    readVin();
     VComp = analogRead(VCOMP_SENSE_PIN);
     VFol = analogRead(V_FOLLOW_PIN);
 
     // Voltage Follower adjustment
+    VLast = VOld - Vin;
     if (VLast > Hyst || VLast < -Hyst) {
       adjustFollow();
-    }
 
     // Voltage Comparator adjustment
-    if (VLast > Hyst || VLast < -Hyst) {
       adjustComp();
+    // Alert the user that auto-calibration is ongoing
+      ERR_STATE = 1;
+    } else {
+      ERR_STATE = 0;
     }
 
-    // Alert the user that auto-calibration is ongoing
-    calibrateAlert();
-
-    // Check for error state
-    checkError();
-
-    // Reply with status
-    serialReply();
+    // Blink LED's on init
+    if (BlinkCount > 0) {
+      BlinkState = !BlinkState;
+      digitalWrite(ERR_LED, BlinkState);
+      digitalWrite(TRG_OUT, BlinkState);
+      --BlinkCount;
+    } else {
+      // Check for error state
+      checkError();
+    }
 
+    // Print state if debug is on
+    if (Debug > 0) {
+      serialPrintState();
+    }
     // Sets trigger output state to false after completing loop
     //digitalWrite(TRG_OUT, HIGH);
     sensorHReading = 0;

firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/pP_config.h

@@ -1,41 +1,63 @@
+#ifndef PP_CONFIG_H
+#define PP_CONFIG_H
+
 // Configurable settings:
 
+#define GAIN_FACTOR_DEFAULT 2 // Gain adjustment factor. 0=3x, 1=3.5x, 2=4.33x, 3=6x, 4=11x
+#define GAIN_FACTOR_ADDRESS 0
 #if !(defined(GAIN_FACTOR))
-  int GAIN_FACTOR = 2;            // Gain adjustment factor. 0=3x, 1=3.5x, 2=4.33x, 3=6x, 4=11x
+ extern int GAIN_FACTOR; 
 #endif
 
-#ifndef senseThrs
-  #define senseThrs 1450
+#define FOLLOWER_THRESHOLD_DEFAULT 1450 // Voltage follower default voltage in mV
+#define FOLLOWER_THRESHOLD_ADDRESS 4
+#if !(defined(followerThrs))
+  extern int followerThrs;
 #endif
 
-#ifndef compThrs
-  #define compThrs 2850
+#define COMP_THRESHOLD_DEFAULT 2850 // Comparatore Vref default voltage in mV
+#define COMP_THRESHOLD_ADDRESS 8
+#if !(defined(compThrs))
+  extern int compThrs;
 #endif
 
 #ifndef InitCount
-  #define InitCount 6             // Number of times to blink the LED on start
+  #define InitCount 6 // Number of times to blink the LED on start
 #endif
 
+#define LOOP_DUR_DEFAULT 50 // duration of time between ADC checks and other loop functions
+#define LOOP_DUR_ADDRESS 12
 #if !(defined(LOOP_DUR))
   extern int LOOP_DUR; 
 #endif
 
+#define TRG_DUR_DEFAULT 20 // duration of the Z-axis pulse sent, in ms
+#define TRG_DUR_ADDRESS 16
 #if !(defined(TRG_DUR))
-  int TRG_DUR = 20;               // duration of the Z-axis pulse sent, in ms
+  extern int TRG_DUR; 
 #endif
 
+#define HYST_DEFAULT 20
+#define HYST_ADDRESS 20
 #if !(defined(Hyst))
-  int Hyst = 20;                  // Hysteresis value for ADC measurements
+  extern int Hyst; // Hysteresis value for ADC measurements
+#endif
+
+#if !(defined(Debug))
+ extern int Debug;
 #endif
 
 #if !(defined(voldMeterConstant))
-  long voltMeterConstant = 1125300L; // For fine tuning input voltage sense
+  extern long voltMeterConstant = 1125300L; // For fine tuning input voltage sense
 #endif
 
 #ifdef I2C_INPUT
   #if !(defined(pP_i2c_address))
-    byte pP_i2c_address = 0xa0;     // I2C Bus Address
+    extern byte pP_i2c_address = 0xa0;     // I2C Bus Address
   #endif
 #endif
 
-  
+void restoreConfig();
+void resetConfig();
+
+#endif

firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/pP_volatile.h

@@ -11,15 +11,15 @@ int VLast = 0;
 // Convert threshold values based on the input voltage
 
 long followerLong = followerThrs * 1023L;
+long compLong = compThrs * 1023L;
+long followerInt;
 long compInt;
 
 // Voltage Comparator Adjustment parameters
 int VComp = 0;
 
 // Voltage Follower Adjustment parameters
-int VAdj = 0;
-int diffAdjL = VAdj - senseInt;
-int diffAdjH = senseInt - VAdj;
+int VFol = 0;
 
 // Error blink parameters
 
@@ -29,10 +29,8 @@ int BlinkCount = InitCount * 2;           // Multiply Blink count by 2 to handle
 // Serial Input Parsing Variables
 #define buffSize 40
 char inputBuffer[buffSize];
-#define startMarker '<'
-#define endMarker '>'
+#define endMarker '\n'
 byte bytesRecvd = 0;
-bool readInProgress = false;
 bool serialIncoming = false;
 char serialMessageIn[buffSize] = {0};
 int serialInt = 0;