pour daan
Dependencies: HIDScope mbed-dsp mbed
Fork of Project5-filteringBiceps by
Revision 31:6b6f60f64cb6, committed 2014-10-20
- Comitter:
- DominiqueC
- Date:
- Mon Oct 20 08:40:39 2014 +0000
- Parent:
- 30:2162f7a82fc7
- Commit message:
- toevoeging movag
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Mon Oct 20 07:47:41 2014 +0000 +++ b/main.cpp Mon Oct 20 08:40:39 2014 +0000 @@ -12,11 +12,13 @@ #include "mbed.h" #include "HIDScope.h" #include "arm_math.h" +#define TSAMP 0.005 // sampletijd 200 Hz //Define objects AnalogIn emg0(PTB0); //Biceps AnalogIn emg1(PTB1); //Triceps HIDScope scope(5); +int const windowsamples = 60; //aantal samples waaruit het window voor MOVAG bestaat arm_biquad_casd_df1_inst_f32 notch; //constants for 50Hz notch @@ -34,16 +36,15 @@ //state values float lowpass_states[4]; - +//state values looper +float emg_value_f32,filtered_emg_notch,filtered_emg_notch_highpass,filtered_emg_notch_highpass_lowpass,filtered_emg_eindsignaal_abs; +float xpos_max,xpos_min,xneg_max,xneg_min; // kalibratiewaardes +float emg_biceps [windowsamples]; + void looper() { /*variable to store value in*/ uint16_t emg_value; - float emg_value_f32; - float filtered_emg_notch; - float filtered_emg_notch_highpass; - float filtered_emg_notch_highpass_lowpass; - float filtered_emg_eindsignaal_abs; /*put raw emg value both in red and in emg_value*/ emg_value = emg0.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) emg_value_f32 = emg0.read(); @@ -53,44 +54,8 @@ arm_biquad_cascade_df1_f32(&highpass, &filtered_emg_notch, &filtered_emg_notch_highpass, 1 ); arm_biquad_cascade_df1_f32(&lowpass, &filtered_emg_notch_highpass, &filtered_emg_notch_highpass_lowpass, 1 ); filtered_emg_eindsignaal_abs = 10*fabs(filtered_emg_notch_highpass_lowpass); //gelijkrichter - - //(Movag) Median berekenen - - int compare (const void * a, const void * b) -{ - return ( *(int*)a - *(int*)b ); -} - -int main() { - - float samples[5]={}; - float med[5]={}; - int count = 0; - float sensval; - while(1) - { - count += 1; - sensval = input; - med[4] = med[3]; - med[3] = med[2]; - med[2] = med[1]; - med[1] = med[0]; - med[0] = sensval; - - samples[4] = med[4]; - samples[3] = med[3]; - samples[2] = med[2]; - samples[1] = med[1]; - samples[0] = med[0]; - - qsort (samples, 5, sizeof(int), compare); - - // show the averages - pc.printf("\n%i %f %f",count,sensval,samples[2]); - } -} - //eind - + emg_biceps []= filtered_emg_eindsignaal_abs; + scope.set(0,emg_value_f32); scope.set(1,filtered_emg_notch); scope.set(2,filtered_emg_notch_highpass); @@ -99,15 +64,44 @@ scope.send(); } + // movag berekenen +void movag() { + //Variabelen voor berekenen gemiddelden + float avg1,avg2; + avg1=avg2=0; + + //Inhoud van een buffer (=gefilterd signaal) optellen + for(int x=0; x<windowsamples; x++) { + avg1 = avg1 + (emg_biceps[x]); +// avg2 = avg2 + (filtered_emg1_eindsignaal_abs[x]); + } + + //Gemiddelde berekenen en relativeren tov maximum voluntary contraction + avg1 = avg1/windowsamples/xpos_max; + avg2 = avg2/windowsamples/xneg_max; + } + +//eind + int main() { + //referentiewaarden bepalen (ergo kalibreren) + xpos_max = 0.25; + xpos_min = 0.1/xpos_max; + xneg_max = 0.20; + xneg_min = 0.1/xneg_max; + + // Tickers Ticker log_timer; - //set up filters. Use external array for constants + Ticker window; + + //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(&lowpass,1 ,lowpass_const,lowpass_states); - log_timer.attach(looper, 0.005); + log_timer.attach(looper, TSAMP); + window.attach(movag, TSAMP); while(1) //Loop { /*Empty!*/