Diff: main.cpp

Revision:

4:d0b4c806f4ea

Parent:

3:57c5633df1ca

--- a/main.cpp	Thu Oct 17 09:29:52 2013 +0000
+++ b/main.cpp	Thu Oct 17 09:38:14 2013 +0000
@@ -25,23 +25,25 @@
 #define DEN3 -3.3189
 #define DEN4 0.7816
 
+
 /* hou in de gaten welke waarden globaal gedefinieerd moeten worden*/ 
-float count; float square_biceps; float sum_biceps; float mean_biceps;
+float count =0;
+float square_biceps = 0;
+float sum_biceps = 0;
+float mean_biceps = 0.2;
 
 void looper()
 {
     /*value0 is huidig, 1 is t-1, 2 is t-2 etc. Gebruik later aanduidingen ABCD. */   
-    static char startup = 0; 
     float mean;
     float sig_out_biceps;
-    static float in0,in1,in2,in3,in4;
-    static float out0,out1,out2,out3,out4;
+    //static variables keep their values between function calls
+    //the assignents are only executed the first iteration.
+    static float in0 =0,in1 =0 ,in2 = 0,in3 = 0,in4 = 0;
+    static float out0 = 0,out1 = 0 ,out2 = 0,out3 = 0,out4 = 0;
     float emg_abs; // square, mean en count eerder gedefinieerd
-    if (startup != 1) 
-        {in0 = in1 = in2 = in3 = in4 = 0;
-        out0 = out1 = out2 = out3 = out4 = 0;
-        count = 0; square_biceps = 0; sum_biceps = 0; mean_biceps = 0.2; startup = 1;
-    }
+    //    initialisation of globals should be done at initialization of program
+    //    count = 0; square_biceps = 0; sum_biceps = 0; mean_biceps = 0.2;
     in4 = in3; in3 = in4; in3 = in2; in2 = in1; in1 = in0;
     in0 = emg_biceps.read();
     red = in0;
@@ -78,6 +80,8 @@
     /*set the period for the PWM to the red LED*/
     red.period_ms(2); // periode pwm = 2*Fs , blijkbaar.
     // blue.period_ms(2);
+
+
     /**Here you attach the 'void looper(void)' function to the Ticker object0
     * The looper() function will be called every 0.001 seconds.
     * Please mind that the parentheses after looper are omitted when using attach.