Diff: EMG.h

Revision:

1:b73e3dc74d7c

Parent:

0:b5f7b64b0fe4

Child:

2:84ff5b0f5406

diff -r b5f7b64b0fe4 -r b73e3dc74d7c EMG.h
--- a/EMG.h	Mon Oct 12 08:47:41 2015 +0000
+++ b/EMG.h	Mon Oct 12 09:04:24 2015 +0000
@@ -34,10 +34,12 @@
 Ticker T1;
 volatile bool sample_go;
 
+DigitalOut led(LED_RED);
 InterruptIn cali_button(PTA4); // initialize interrupt button for calibration stuff
-double cali_fact = 8; // calibration factor to normalize filter output to a scale of 0 - 1
-double cali_array[2560] = {}; // array to store values in
-
+double cali_fact1 = 8;
+double cali_fact2 = 8; // calibration factor to normalize filter output to a scale of 0 - 1
+double cali_array1[2560] = {}; // array to store values in for channel 1
+double cali_array2[2560] = {}; // array to store values in for channel 2
 
 void sample_filter()
 {
@@ -54,20 +56,32 @@
 
 void calibrate() // function to calibrate the emg signals from the user. It takes 5 seconds of measurements of maximum output, then takes the max and normalizes to that.
 {
-    double cali_max = 0; // declare max
-    cali_fact = 1;
+    double cali_max1 = 0; // declare max
+    double cali_max2 = 0;
+    cali_fact1 = 1; cali_fact2 = 1;
+    led = 1;
     for(int cali_index = 0; cali_index < 2560; cali_index++)
     {
         sample_filter();
-        cali_array[cali_index] = y1;
+        cali_array1[cali_index] = y1;
+        cali_array2[cali_index] = y2;
         wait((float)1/Fs);
     }
      for(int cali_index2 = 0; cali_index2<2560; cali_index2++)
      {
-          if(cali_array[cali_index2] > cali_max)
-                cali_max = cali_array[cali_index2];
+        if(cali_array1[cali_index2] > cali_max1)
+            {
+                cali_max1 = cali_array1[cali_index2];
+            }
+        if(cali_array2[cali_index2] > cali_max2)
+            {
+                cali_max2 = cali_array2[cali_index2];
+            }
      }
-     cali_fact = (double)1/cali_max;
+     cali_fact1 = (double)1/cali_max1;
+     cali_fact2 = (double)1/cali_max2;
+     led = 0;
+     pc.printf("Calibration factor 1: %f\nCalibration factor 2: %f\n", cali_fact1, cali_fact2);
 }
 
 /*