diff --git a/CPiThreshold.ino b/CPiThreshold.ino
index ceaa82c..2a5a661 100644
--- a/CPiThreshold.ino
+++ b/CPiThreshold.ino
@@ -1,17 +1,23 @@
 #include <Wire.h>
 
-//this test works when testing with boards 1 and 2
-//set the threshold as a 1 time value, max is 3.3V (voltage reference removed from protos)
-//crashes due to 50Hz noise
-//input thresholds not checked 100%
-//minimum input signal duration 40ns for coincidence.
-//at 40ns incident coincidence the output lasts for 150ns - plenty for the DUE to capture.
-//Hardware is more reliable than DUE's noise immunity.
+//this code sets values in the MAX5387LAUD+ via I2C.
+//it then reads back those values over A1 and A2 inputs
+//The ADC is set to 12 bits for the DUE
+//Channels are scanned in parallel (0 to 255)
+//then alternatively ascending and descending.
+//Output is a CSV over serial at 9600bps.
+
+//this test works when testing with board 2
 //Note the MAX5387LAUD+ doesn't support I2C readback.
 
-//detailed threshold calibration could be done, but our signal generator doesn't plug in very well.
-//using DAC would be a nice option for checking the thresholds.
+
 byte ADCval;
+byte ADCval1;
+byte ADCval2;
+byte ADCval3;
+byte ADCval4;
+byte ADCval5;
+byte ADCval6;
 
 void setup() {
   // put your setup code here, to run once:
@@ -28,25 +34,82 @@ void setup() {
   //setup the serial for debug
   Serial.begin(9600);
   //setup the MAX5387 pot
-  ADCval = byte(0x00);
+  ADCval1 = byte(0x00);
+  ADCval2 = byte(0x00);
+  ADCval3 = byte(0xFF);
+  ADCval4 = byte(0x00);
+  ADCval5 = byte(0x00);
+  ADCval6 = byte(0xFF);
+  analogReadResolution(12); 
 }
 
 
 void loop() {
+
+  for (int i=0; i<=0xFF; i++){
   Wire.begin();
   //Serial.print("MAX5387 Address ");
   //Serial.print(0x28, HEX);
   Wire.beginTransmission(byte(0x28)); // transmit to device #112
   Wire.write(byte(B00010011));
-  Wire.write(ADCval);// sets register pointer to echo #1 register (0x02)
+  Wire.write(ADCval1);// sets register pointer to echo #1 register (0x02)
   Wire.endTransmission();      // stop transmitting
-  Serial.print("Setpoint:"); //note that this is manually updated by the human!
-  Serial.print(ADCval); //note that this is manually updated by the human!
+  Serial.print("Both Channels ++ Setpoint 1:"); //note that this is manually updated by the human!
+  Serial.print(ADCval1); //note that this is manually updated by the human!
+  Serial.print("; Setpoint 2:"); //note that this is manually updated by the human!
+  Serial.print(ADCval1); //note that this is manually updated by the human!
   Serial.print("; A1:"); //note that this is manually updated by the human!
   Serial.print(analogRead(A1));
   Serial.print("; A2:"); //note that this is manually updated by the human!
   Serial.print(analogRead(A2));
   Serial.println(";"); //note that this is manually updated by the human!
-  delay(1000);
-  ADCval++;
+  ADCval1++;
+  delay(10);
+  }
+  for (int i=0; i<=0xFF; i++){
+  
+  Wire.beginTransmission(byte(0x28)); // transmit to device #112
+  Wire.write(byte(B00010001));
+  Wire.write(ADCval3);// sets register pointer to echo #1 register (0x02)
+  Wire.endTransmission();      // stop transmitting
+  Wire.beginTransmission(byte(0x28)); // transmit to device #112
+  Wire.write(byte(B00010010));
+  Wire.write(ADCval4);// sets register pointer to echo #1 register (0x02)
+  Wire.endTransmission();      // stop transmitting
+  Serial.print("Ch1-- Ch2++ Setpoint 1:"); //note that this is manually updated by the human!
+  Serial.print(ADCval3); //note that this is manually updated by the human!
+  Serial.print("; Setpoint 2:"); //note that this is manually updated by the human!
+  Serial.print(ADCval4); //note that this is manually updated by the human!
+  Serial.print("; A1:"); //note that this is manually updated by the human!
+  Serial.print(analogRead(A1));
+  Serial.print("; A2:"); //note that this is manually updated by the human!
+  Serial.print(analogRead(A2));
+  Serial.println(";"); //note that this is manually updated by the human!
+  ADCval3--;
+  ADCval4++;
+  delay(10);
+}
+  for (int i=0; i<=0xFF; i++){
+   
+  Wire.beginTransmission(byte(0x28)); // transmit to device #112
+  Wire.write(byte(B00010001));
+  Wire.write(ADCval5);// sets register pointer to echo #1 register (0x02)
+  Wire.endTransmission();      // stop transmitting
+  Wire.beginTransmission(byte(0x28)); // transmit to device #112
+  Wire.write(byte(B00010010));
+  Wire.write(ADCval6);// sets register pointer to echo #1 register (0x02)
+  Wire.endTransmission();      // stop transmitting
+  Serial.print("Ch1++ Ch2-- Setpoint 1:"); //note that this is manually updated by the human!
+  Serial.print(ADCval5); //note that this is manually updated by the human!
+  Serial.print("; Setpoint 2:"); //note that this is manually updated by the human!
+  Serial.print(ADCval6); //note that this is manually updated by the human!
+  Serial.print("; A1:"); //note that this is manually updated by the human!
+  Serial.print(analogRead(A1));
+  Serial.print("; A2:"); //note that this is manually updated by the human!
+  Serial.print(analogRead(A2));
+  Serial.println(";"); //note that this is manually updated by the human!
+  ADCval5++;
+  ADCval6--;
+  delay(10);
+ }
 }
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