EMG signals all around zero, not showing differences anymore in hidscope

Dependencies:   HIDScope MODSERIAL biquadFilter mbed

Fork of a_check_emg_filtered_without_cal by Daniqe Kottelenberg

Revision:
2:025d9065b25f
Parent:
1:30d46f7e5150
Child:
3:79b95226a608
--- a/main.cpp	Fri Oct 21 12:17:41 2016 +0000
+++ b/main.cpp	Fri Oct 21 12:41:47 2016 +0000
@@ -1,26 +1,32 @@
 //libraries
 #include "mbed.h"
 #include "HIDScope.h"
-#include "biquadFilter.h"  
+#include "biquadFilter.h" 
+#include "MODSERIAL.h" 
 
 //Define objects
 AnalogIn    emg0( A0 );             //analog in to get EMG in to c++
 Ticker      sample_timer;           //ticker
 HIDScope    scope( 2);             //open 3 channels in hidscope
 DigitalOut  led(LED_GREEN);
+MODSERIAL pc(USBTX,USBRX);          // connection with pc
+
 
 //define variables
 double emg_0_value;
+biquadFilter filter(-1.1430, 0.4128, 0.6389, -1.2779, 0.6389); //initialize filter
 
 
 void filter(){
         emg_0_value=emg0.read();                            //read the emg value from the elektrodes
         led=!led;
-                     
+        emg_filter=filter.step(emg_0_value)             
         //send signals  to scope
         scope.set(0, emg_0_value );           //set emg signal to scope in channel 1
-        scope.set(1, emg_0_value );    
+        scope.set(1, emg_filter );    
         scope.send();                       //send all the signals to the scope
+        
+        pc.printf("emg raw: %f, emg filter %f \r\n",emg_o_value,emg_filter);
                 }
 
 //program
@@ -28,7 +34,7 @@
 int main()
 {  
 sample_timer.attach(&filter, 0.001);        //continously execute the EMG reader and filter, it ensures that filter and sampling is executed every 1/frequency seconds
-
+pc.baud(115200);                            //connection with pc at 115200 rate
 //endless loop
 
     while(1)