BMT M9 Groep01 / Mbed 2 deprecated test_emg

emg

Dependencies:   HIDScope MODSERIAL mbed-dsp mbed TouchButton

Fork of test by BMT M9 Groep01

Files at this revision

API Documentation at this revision

Revision 17:5fd768d0504f, committed 2014-10-24

Comitter:
Tanja2211
Date:
Fri Oct 24 10:21:22 2014 +0000
Parent:
16:e997a6fd802a
Child:
18:1110be4aab6e
Commit message:
filters veranderd

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Fri Oct 24 09:48:05 2014 +0000
+++ b/main.cpp	Fri Oct 24 10:21:22 2014 +0000
@@ -34,13 +34,13 @@
 arm_biquad_casd_df1_inst_f32 lowpassT;
 arm_biquad_casd_df1_inst_f32 lowpassB;
 //constants for 50Hz lowpass
-float lowpass_const[] = {0,   0.558697707784438,   0.257307012382698,  -0.292447944767337,   0.108452664934473};//{a0 a1 a2 -b1 -b2} van online calculator
+float lowpass_const[] = {0.2928920553392428, 0.5857841106784856, 0.17156822135697122, 1.3007020142696517e-16,   -0.17156822135697122};//{a0 a1 a2 -b1 -b2} van online calculator
 float lowpass_states[4];
 
 arm_biquad_casd_df1_inst_f32 highpassT;
 arm_biquad_casd_df1_inst_f32 highpassB;
 //constants for 10Hz highpass
-float highpass_const[] = {1.000000000000000,  -1.957555609146701,   0.957555609146701, -1.562244197866329,   0.641280516968023};//{a0 a1 a2 -b1 -b2}
+float highpass_const[] = {0.6389437261127494, -1.2778874522254988, 0.6389437261127494, 1.1429772843080923, -0.41279762014290533};//{a0 a1 a2 -b1 -b2}
 float highpass_states[4];
 
 
@@ -52,10 +52,9 @@
     emg_value_f32T = emgT.read();
 
     //Triceps filteren
-    arm_biquad_cascade_df1_f32(&highpassT, &emg_value_f32T, &filtered_emgT, 1 );
-    arm_biquad_cascade_df1_f32(&lowpassT, &filtered_emgT, &filtered_emgT, 1 );
+    arm_biquad_cascade_df1_f32(&lowpassT, &emg_value_f32T, &filtered_emgT, 1 );
     filtered_emgT = fabs(filtered_emgT);
-
+    arm_biquad_cascade_df1_f32(&highpassT, &filtered_emgT, &filtered_emgT, 1 );
     
 
     //Triceps moving average
@@ -107,9 +106,11 @@
     emg_value_f32B = emgB.read();
 
     //Biceps filteren
-    arm_biquad_cascade_df1_f32(&highpassB, &emg_value_f32B, &filtered_emgB, 1 );
-    arm_biquad_cascade_df1_f32(&lowpassB, &filtered_emgB, &filtered_emgB, 1 );
+    arm_biquad_cascade_df1_f32(&lowpassB, &emg_value_f32B, &filtered_emgB, 1 );
     filtered_emgB = fabs(filtered_emgB);
+    arm_biquad_cascade_df1_f32(&highpassB, &filtered_emgB, &filtered_emgB, 1 );
+    
+    
 
     //Biceps moving average
     B0=filtered_emgB;