emg
Dependencies: HIDScope MODSERIAL mbed-dsp mbed TouchButton
Fork of test by
main.cpp@0:abe0bc5c43b7, 2014-10-21 (annotated)
- Committer:
- s1340735
- Date:
- Tue Oct 21 13:51:54 2014 +0000
- Revision:
- 0:abe0bc5c43b7
- Child:
- 1:6a8b45298e54
biceps filter;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
s1340735 | 0:abe0bc5c43b7 | 1 | #include "mbed.h" |
s1340735 | 0:abe0bc5c43b7 | 2 | #include "HIDScope.h" |
s1340735 | 0:abe0bc5c43b7 | 3 | #include "MODSERIAL.h" |
s1340735 | 0:abe0bc5c43b7 | 4 | #include "arm_math.h" |
s1340735 | 0:abe0bc5c43b7 | 5 | |
s1340735 | 0:abe0bc5c43b7 | 6 | HIDScope scope(2);//is dit 4 voor 2 spieren? en hoe zit het met scope.set? |
s1340735 | 0:abe0bc5c43b7 | 7 | |
s1340735 | 0:abe0bc5c43b7 | 8 | AnalogIn emgB(PTB0); |
s1340735 | 0:abe0bc5c43b7 | 9 | |
s1340735 | 0:abe0bc5c43b7 | 10 | //*** OBJECTS *** |
s1340735 | 0:abe0bc5c43b7 | 11 | float (filtered_emgB); |
s1340735 | 0:abe0bc5c43b7 | 12 | float drempelwaardeB1, drempelwaardeB2, drempelwaardeB3;//B1=snelheidsstand 1, B2=snelheidsstand 2, B3=snelheidsstand 3 |
s1340735 | 0:abe0bc5c43b7 | 13 | int yB1, yB2, yB3; |
s1340735 | 0:abe0bc5c43b7 | 14 | float B0, B1, B2, B3, B4, B5, B6, B7, B8, B9, MOVAVG_B;//moving average objects |
s1340735 | 0:abe0bc5c43b7 | 15 | |
s1340735 | 0:abe0bc5c43b7 | 16 | |
s1340735 | 0:abe0bc5c43b7 | 17 | //*** FILTERS *** |
s1340735 | 0:abe0bc5c43b7 | 18 | arm_biquad_casd_df1_inst_f32 lowpass; |
s1340735 | 0:abe0bc5c43b7 | 19 | //constants for 50Hz lowpass |
s1340735 | 0:abe0bc5c43b7 | 20 | float lowpass_const[] = {0.2928920553, 0.5857841107, 0.2928920554, -0, -0.17156822136};//{a0 a1 a2 -b1 -b2} van online calculator |
s1340735 | 0:abe0bc5c43b7 | 21 | float lowpass_states[4]; |
s1340735 | 0:abe0bc5c43b7 | 22 | |
s1340735 | 0:abe0bc5c43b7 | 23 | arm_biquad_casd_df1_inst_f32 highpass; |
s1340735 | 0:abe0bc5c43b7 | 24 | //constants for 10Hz highpass |
s1340735 | 0:abe0bc5c43b7 | 25 | float highpass_const[] = {0.8005910267, -1.6011820533, 0.8005910267, 1.5610153913, -0.6413487154};//{a0 a1 a2 -b1 -b2} |
s1340735 | 0:abe0bc5c43b7 | 26 | float highpass_states[4]; |
s1340735 | 0:abe0bc5c43b7 | 27 | |
s1340735 | 0:abe0bc5c43b7 | 28 | //*** CALIBRATIE *** |
s1340735 | 0:abe0bc5c43b7 | 29 | |
s1340735 | 0:abe0bc5c43b7 | 30 | // |
s1340735 | 0:abe0bc5c43b7 | 31 | |
s1340735 | 0:abe0bc5c43b7 | 32 | //*** BICEP EMG *** |
s1340735 | 0:abe0bc5c43b7 | 33 | void Biceps() |
s1340735 | 0:abe0bc5c43b7 | 34 | { |
s1340735 | 0:abe0bc5c43b7 | 35 | uint16_t emg_valueB; |
s1340735 | 0:abe0bc5c43b7 | 36 | float emg_value_f32B; |
s1340735 | 0:abe0bc5c43b7 | 37 | |
s1340735 | 0:abe0bc5c43b7 | 38 | |
s1340735 | 0:abe0bc5c43b7 | 39 | //lezen |
s1340735 | 0:abe0bc5c43b7 | 40 | emg_valueB = emgB.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) |
s1340735 | 0:abe0bc5c43b7 | 41 | emg_value_f32B = emgB.read(); |
s1340735 | 0:abe0bc5c43b7 | 42 | |
s1340735 | 0:abe0bc5c43b7 | 43 | |
s1340735 | 0:abe0bc5c43b7 | 44 | //filteren |
s1340735 | 0:abe0bc5c43b7 | 45 | arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32B, &filtered_emgB, 1 ); |
s1340735 | 0:abe0bc5c43b7 | 46 | |
s1340735 | 0:abe0bc5c43b7 | 47 | arm_biquad_cascade_df1_f32(&lowpass, &filtered_emgB, &filtered_emgB, 1 ); |
s1340735 | 0:abe0bc5c43b7 | 48 | |
s1340735 | 0:abe0bc5c43b7 | 49 | filtered_emgB = fabs(filtered_emgB); |
s1340735 | 0:abe0bc5c43b7 | 50 | |
s1340735 | 0:abe0bc5c43b7 | 51 | |
s1340735 | 0:abe0bc5c43b7 | 52 | //moving average |
s1340735 | 0:abe0bc5c43b7 | 53 | B0=filtered_emgB; |
s1340735 | 0:abe0bc5c43b7 | 54 | |
s1340735 | 0:abe0bc5c43b7 | 55 | MOVAVG_B=B0*0.1+B1*0.1+B2*0.1+B3*0.1+B4*0.1+B5*0.1+B6*0.1+B7*0.1+B8*0.1+B9*0.1; |
s1340735 | 0:abe0bc5c43b7 | 56 | |
s1340735 | 0:abe0bc5c43b7 | 57 | B9=B8; |
s1340735 | 0:abe0bc5c43b7 | 58 | B8=B7; |
s1340735 | 0:abe0bc5c43b7 | 59 | B7=B6; |
s1340735 | 0:abe0bc5c43b7 | 60 | B6=B5; |
s1340735 | 0:abe0bc5c43b7 | 61 | B5=B4; |
s1340735 | 0:abe0bc5c43b7 | 62 | B4=B3; |
s1340735 | 0:abe0bc5c43b7 | 63 | B3=B2; |
s1340735 | 0:abe0bc5c43b7 | 64 | B2=B1; |
s1340735 | 0:abe0bc5c43b7 | 65 | B1=B0; |
s1340735 | 0:abe0bc5c43b7 | 66 | |
s1340735 | 0:abe0bc5c43b7 | 67 | //naar scherm sturen |
s1340735 | 0:abe0bc5c43b7 | 68 | scope.set(0,emg_valueB); |
s1340735 | 0:abe0bc5c43b7 | 69 | scope.set(1,MOVAVG_B); |
s1340735 | 0:abe0bc5c43b7 | 70 | scope.send(); |
s1340735 | 0:abe0bc5c43b7 | 71 | |
s1340735 | 0:abe0bc5c43b7 | 72 | |
s1340735 | 0:abe0bc5c43b7 | 73 | // *** MAIN *** |
s1340735 | 0:abe0bc5c43b7 | 74 | int main() { |
s1340735 | 0:abe0bc5c43b7 | 75 | |
s1340735 | 0:abe0bc5c43b7 | 76 | |
s1340735 | 0:abe0bc5c43b7 | 77 | |
s1340735 | 0:abe0bc5c43b7 | 78 | |
s1340735 | 0:abe0bc5c43b7 | 79 | if (filtered_emgB >= drempelwaardeB1) { |
s1340735 | 0:abe0bc5c43b7 | 80 | yB1=1; |
s1340735 | 0:abe0bc5c43b7 | 81 | if (filtered_emgB >= drempelwaardeB2) { |
s1340735 | 0:abe0bc5c43b7 | 82 | yB2=1; |
s1340735 | 0:abe0bc5c43b7 | 83 | if (filtered_emgB >= drempelwaardeB3) { |
s1340735 | 0:abe0bc5c43b7 | 84 | yB3=1; |
s1340735 | 0:abe0bc5c43b7 | 85 | } else { |
s1340735 | 0:abe0bc5c43b7 | 86 | yB3=0; |
s1340735 | 0:abe0bc5c43b7 | 87 | } |
s1340735 | 0:abe0bc5c43b7 | 88 | } else { |
s1340735 | 0:abe0bc5c43b7 | 89 | yB2=0; |
s1340735 | 0:abe0bc5c43b7 | 90 | } |
s1340735 | 0:abe0bc5c43b7 | 91 | } else { |
s1340735 | 0:abe0bc5c43b7 | 92 | yB1=0; |
s1340735 | 0:abe0bc5c43b7 | 93 | } |
s1340735 | 0:abe0bc5c43b7 | 94 | |
s1340735 | 0:abe0bc5c43b7 | 95 |