Diff: LineScan.cpp

Revision:

27:173b2f564143

Parent:

26:5e70edee216d

--- a/LineScan.cpp	Tue Apr 28 01:05:47 2015 +0000
+++ b/LineScan.cpp	Thu May 21 06:54:06 2015 +0000
@@ -1,7 +1,7 @@
 #include "LineScan.h"
 #include <string.h>
 
-#define THRESH 4000
+#define THRESH 1000
 
 #define MEAN_REF 10000      //ideal mean we should see
 #define CAM_CTRL_GAIN 0.002 //should be small
@@ -62,7 +62,7 @@
     l_idx_ary[0] = -1;
 
     if(array) {
-        avg[0] = array[SKIP - 1]/2 + array[SKIP]/2;
+        avg[0] = array[SKIP - 1]/2 + array[SKIP]/2;     // To cut off the (invalid) ends of the data. 
         diff[0] = 0;
         tele_linescan_diff[0] = diff[0];
 
@@ -288,7 +288,7 @@
         }
         //AGC, simple proportional controller
         total = total / frameLen;
-        exposureChange = ((float)(MEAN_REF - total)) * CAM_CTRL_GAIN;
+        exposureChange = ((float)(MEAN_REF - total)) * CAM_CTRL_GAIN;       // This is actually I control. 
         *exposure += (int)exposureChange;
         if(*exposure < 0)
             *exposure = 0;
@@ -347,10 +347,12 @@
     return position;
 }
 
+
+
 float getLinePos2(AnalogIn cam,
                   DigitalOut *camSi,
                   DigitalOut *camClk,
-                  int *exposure)
+                  int *exposure)            // Doesn't send telem. 
 {
     uint16_t lineAry[NUM_PIX];
     float position;
@@ -362,7 +364,7 @@
     }
 
     //process line scan data
-    position  = processFn2(lineAry, NUM_PIX, exposure);//, tele_linescan_diff);
+    position  = processFn2(lineAry, NUM_PIX, exposure);
 
     return position;
 }