Diff: LineScan.cpp

Revision:

9:5226617d2019

Parent:

8:b9ec2f3e12b6

Child:

10:6b6c3db74538

Child:

11:5e66d0531053

--- a/LineScan.cpp	Thu Apr 02 18:38:29 2015 +0000
+++ b/LineScan.cpp	Fri Apr 03 00:27:53 2015 +0000
@@ -8,7 +8,7 @@
 #define THRESH 10000
 
 #define MEAN_REF 30000      //ideal difference we should see
-#define CAM_CTRL_GAIN 0.001 //should be small
+#define CAM_CTRL_GAIN 0.0005 //should be small
 
 uint16_t read1Bit(AnalogIn cam, DigitalOut *camClk){
     uint16_t pixel;
@@ -63,10 +63,10 @@
         }
         exposureChange = ((float)(MEAN_REF - highest + lowest)) * CAM_CTRL_GAIN;    //AGC, simple proportional controller
         *exposure += (int)exposureChange;
-        if(*exposure <= 0)
-            *exposure = 1;
-        else if(*exposure > 40)
-            *exposure = 40;
+        if(*exposure < 10)
+            *exposure = 10;
+        else if(*exposure > 30)
+            *exposure = 30;
     }
     
     return ((float)(h_idx + l_idx)) / (2.0 * (float)frameLen);    //0 is center