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werkend filter: 50 hz notch 20 hz hoogdoorlaat 80 hz laagdoorlaat geabsoluteerd vermenigvuldigd met 10
Dependencies: HIDScope mbed-dsp mbed
Fork of P5-2 by
Diff: main.cpp
- Revision:
- 14:ebaa515f9aea
- Parent:
- 13:1f0ac2425368
- Child:
- 15:0c3fb81707a7
--- a/main.cpp Thu Oct 16 10:20:29 2014 +0000 +++ b/main.cpp Thu Oct 16 10:24:30 2014 +0000 @@ -23,11 +23,11 @@ float notch_const[] = {0.5857841106784856, -1.3007020142696517e-16, 0.5857841106784856, -1.3007020142696517e-16, 0.17156822135697122}; //state values float notch_states[4]; -//arm_biquad_casd_df1_inst_f32 highpass; +arm_biquad_casd_df1_inst_f32 highpass; //constants for 5Hz highpass -//float highpass_const[] = {0.8948577513857248, -1.7897155027714495, 0.8948577513857248, -1.7786300789392977, 0.8008009266036016}; +float highpass_const[] = {0.8948577513857248, -1.7897155027714495, 0.8948577513857248, -1.7786300789392977, 0.8008009266036016}; //state values -//float highpass_states[4]; +float highpass_states[4]; //constants for 80Hz lowpass //arm_biquad_casd_df1_inst_f32 lowpass; //float lowpass_const[] = {0.6389437261127493, 1.2778874522254986, 0.6389437261127493, 1.1429772843080919, 0.41279762014290533}; @@ -49,8 +49,8 @@ emg_value_f32 = emg0.read(); //process emg - //arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32, &filtered_emg, 1 ); - arm_biquad_cascade_df1_f32(¬ch, &emg_value_f32, &filtered_emg_notch, 1 ); + arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32, &filtered_emg, 1 ); + arm_biquad_cascade_df1_f32(¬ch, &filtered_emg, &filtered_emg_notch, 1 ); //arm_biquad_cascade_df1_f32(¬ch, &filtered_emg_notch, &filtered_emg_lowpass, 1 ); //filtered_emg_abs = fabs(filtered_emg_lowpass); @@ -68,7 +68,7 @@ Ticker log_timer; //set up filters. Use external array for constants arm_biquad_cascade_df1_init_f32(¬ch,1 , notch_const, notch_states); - //arm_biquad_cascade_df1_init_f32(&highpass,1 ,highpass_const,highpass_states); + arm_biquad_cascade_df1_init_f32(&highpass,1 ,highpass_const,highpass_states); //arm_biquad_cascade_df1_init_f32(&lowpass,1 ,lowpass_const,lowpass_states); log_timer.attach(looper, 0.005);