dumped all my old arduino stuff in here.

light.txt

@@ -0,0 +1,37 @@
+   1. #define TSL_FREQ_PIN 2 // output use digital pin2 for interrupt  
+   2. #define TSL_S0       5  
+   3. #define TSL_S1       6  
+   4. #define TSL_S2       7  
+   5. #define TSL_S3       8  
+   
+      1. unsigned long pulse_cnt = 0;  
+   2.   
+   3. void setup() {  
+   4.   
+   5.   // attach interrupt to pin2, send output pin of TSL230R to arduino 2  
+   6.   // call handler on each rising pulse  
+   7.   
+   8.  attachInterrupt(0, add_pulse, RISING);  
+   9.   
+  10.  pinMode(TSL_FREQ_PIN, INPUT);  
+  11.  pinMode(TSL_S0, OUTPUT);  
+  12.  pinMode(TSL_S1, OUTPUT);  
+  13.  pinMode(TSL_S2, OUTPUT);  
+  14.  pinMode(TSL_S3, OUTPUT);  
+  15.   
+  16.  digitalWrite(TSL_S0, HIGH);  
+  17.  digitalWrite(TSL_S1, LOW);  
+  18.  digitalWrite(TSL_S2, HIGH);  
+  19.  digitalWrite(TSL_S3, HIGH);  
+  20. }  
+  21.   
+  22. void loop() {  
+  23.   
+  24. }  
+  25.   
+  26. void add_pulse() {  
+  27.   
+  28.   // increase pulse count  
+  29.  pulse_cnt++;  
+  30.  return;  
+  31. }