filtering biceps en triceps
Dependencies: HIDScope mbed-dsp mbed
main.cpp@3:70f9de0ba6e0, 2014-10-17 (annotated)
- Committer:
- DominiqueC
- Date:
- Fri Oct 17 17:49:44 2014 +0000
- Revision:
- 3:70f9de0ba6e0
- Parent:
- 2:566f1af9d37d
- Child:
- 4:ba04bae0f6fc
alleen biceps alle filters
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DominiqueC | 0:055b4123367c | 1 | /***************************************/ |
DominiqueC | 0:055b4123367c | 2 | /* */ |
DominiqueC | 0:055b4123367c | 3 | /* BRONCODE GROEP 5, MODULE 9, 2014 */ |
DominiqueC | 0:055b4123367c | 4 | /* *****-THE SLAP-****** */ |
DominiqueC | 0:055b4123367c | 5 | /* */ |
DominiqueC | 0:055b4123367c | 6 | /* -Dominique Clevers */ |
DominiqueC | 0:055b4123367c | 7 | /* -Rianne van Dommelen */ |
DominiqueC | 0:055b4123367c | 8 | /* -Daan de Muinck Keizer */ |
DominiqueC | 0:055b4123367c | 9 | /* -David den Houting */ |
DominiqueC | 0:055b4123367c | 10 | /* -Marjolein Thijssen */ |
DominiqueC | 0:055b4123367c | 11 | /***************************************/ |
DominiqueC | 0:055b4123367c | 12 | #include "mbed.h" |
DominiqueC | 0:055b4123367c | 13 | #include "HIDScope.h" |
DominiqueC | 0:055b4123367c | 14 | #include "arm_math.h" |
DominiqueC | 0:055b4123367c | 15 | |
DominiqueC | 0:055b4123367c | 16 | //Define objects |
DominiqueC | 0:055b4123367c | 17 | AnalogIn emg0(PTB0); //Biceps |
DominiqueC | 0:055b4123367c | 18 | AnalogIn emg1(PTB1); //Triceps |
DominiqueC | 3:70f9de0ba6e0 | 19 | HIDScope scope(4); |
DominiqueC | 0:055b4123367c | 20 | |
DominiqueC | 0:055b4123367c | 21 | arm_biquad_casd_df1_inst_f32 notch; |
DominiqueC | 0:055b4123367c | 22 | //constants for 50Hz notch |
DominiqueC | 0:055b4123367c | 23 | float notch_const[] = {0.9695312529087462, -0.0, 0.9695312529087462, 0.0, -0.9390625058174924}; |
DominiqueC | 0:055b4123367c | 24 | //state values |
DominiqueC | 0:055b4123367c | 25 | float notch_states[4]; |
DominiqueC | 0:055b4123367c | 26 | arm_biquad_casd_df1_inst_f32 highpass; |
DominiqueC | 0:055b4123367c | 27 | //constants for 20Hz highpass |
DominiqueC | 0:055b4123367c | 28 | float highpass_const[] = {0.638945525159022, -1.277891050318045, 0.638945525159022, 1.142980502539901, -0.412801598096189}; |
DominiqueC | 0:055b4123367c | 29 | //state values |
DominiqueC | 0:055b4123367c | 30 | float highpass_states[4]; |
DominiqueC | 0:055b4123367c | 31 | //constants for 80Hz lowpass |
DominiqueC | 0:055b4123367c | 32 | arm_biquad_casd_df1_inst_f32 lowpass; |
DominiqueC | 0:055b4123367c | 33 | float lowpass_const[] = {0.638945525159022, 1.277891050318045, 0.638945525159022, -1.142980502539901, -0.412801598096189}; |
DominiqueC | 0:055b4123367c | 34 | //state values |
DominiqueC | 0:055b4123367c | 35 | float lowpass_states[4]; |
DominiqueC | 0:055b4123367c | 36 | |
DominiqueC | 0:055b4123367c | 37 | |
DominiqueC | 0:055b4123367c | 38 | void looper() |
DominiqueC | 0:055b4123367c | 39 | { |
DominiqueC | 1:d4f3f7b24852 | 40 | /*variable to store value in for biceps*/ |
DominiqueC | 1:d4f3f7b24852 | 41 | uint16_t emg0_value; |
DominiqueC | 1:d4f3f7b24852 | 42 | float emg0_value_f32; |
DominiqueC | 2:566f1af9d37d | 43 | float filtered_emg0_notch; |
DominiqueC | 2:566f1af9d37d | 44 | float filtered_emg0_notch_highpass; |
DominiqueC | 2:566f1af9d37d | 45 | float filtered_emg0_notch_highpass_lowpass; |
DominiqueC | 1:d4f3f7b24852 | 46 | float filtered_emg0_eindsignaal_abs; |
DominiqueC | 1:d4f3f7b24852 | 47 | |
DominiqueC | 1:d4f3f7b24852 | 48 | /*variable to store value in for triceps*/ |
DominiqueC | 1:d4f3f7b24852 | 49 | uint16_t emg1_value; |
DominiqueC | 1:d4f3f7b24852 | 50 | float emg1_value_f32; |
DominiqueC | 2:566f1af9d37d | 51 | float filtered_emg1_notch; |
DominiqueC | 2:566f1af9d37d | 52 | float filtered_emg1_notch_highpass; |
DominiqueC | 2:566f1af9d37d | 53 | float filtered_emg1_notch_highpass_lowpass; |
DominiqueC | 1:d4f3f7b24852 | 54 | float filtered_emg1_eindsignaal_abs; |
DominiqueC | 1:d4f3f7b24852 | 55 | |
DominiqueC | 0:055b4123367c | 56 | /*put raw emg value both in red and in emg_value*/ |
DominiqueC | 1:d4f3f7b24852 | 57 | emg0_value = emg0.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) |
DominiqueC | 1:d4f3f7b24852 | 58 | emg0_value_f32 = emg0.read(); //?????moet hiet eindsignaal ook bij staan??????? |
DominiqueC | 1:d4f3f7b24852 | 59 | |
DominiqueC | 1:d4f3f7b24852 | 60 | emg1_value = emg1.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) |
DominiqueC | 1:d4f3f7b24852 | 61 | emg1_value_f32 = emg1.read(); |
DominiqueC | 0:055b4123367c | 62 | |
DominiqueC | 1:d4f3f7b24852 | 63 | //process emg biceps |
DominiqueC | 1:d4f3f7b24852 | 64 | arm_biquad_cascade_df1_f32(¬ch, &emg0_value_f32, &filtered_emg0_notch, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 65 | arm_biquad_cascade_df1_f32(&highpass, &filtered_emg0_notch, &filtered_emg0_notch_highpass, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 66 | arm_biquad_cascade_df1_f32(&lowpass, &filtered_emg0_notch_highpass, &filtered_emg0_notch_highpass_lowpass, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 67 | filtered_emg0_eindsignaal_abs = 10*fabs(filtered_emg0_notch_highpass_lowpass); |
DominiqueC | 0:055b4123367c | 68 | |
DominiqueC | 1:d4f3f7b24852 | 69 | //process emg triceps |
DominiqueC | 1:d4f3f7b24852 | 70 | arm_biquad_cascade_df1_f32(¬ch, &emg1_value_f32, &filtered_emg1_notch, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 71 | arm_biquad_cascade_df1_f32(&highpass, &filtered_emg1_notch, &filtered_emg1_notch_highpass, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 72 | arm_biquad_cascade_df1_f32(&lowpass, &filtered_emg1_notch_highpass, &filtered_emg1_notch_highpass_lowpass, 1 ); |
DominiqueC | 1:d4f3f7b24852 | 73 | filtered_emg1_eindsignaal_abs = 10*fabs(filtered_emg1_notch_highpass_lowpass); |
DominiqueC | 1:d4f3f7b24852 | 74 | |
DominiqueC | 1:d4f3f7b24852 | 75 | //send to PC |
DominiqueC | 1:d4f3f7b24852 | 76 | scope.set(0,emg0_value_f32); |
DominiqueC | 3:70f9de0ba6e0 | 77 | scope.set(1,filtered_emg0_notch); |
DominiqueC | 3:70f9de0ba6e0 | 78 | scope.set(2,filtered_emg0_notch_highpass); |
DominiqueC | 3:70f9de0ba6e0 | 79 | scope.set(3,filtered_emg0_notch_highpass_lowpass); |
DominiqueC | 3:70f9de0ba6e0 | 80 | scope.set(4,filtered_emg0_eindsignaal_abs); |
DominiqueC | 0:055b4123367c | 81 | scope.send(); |
DominiqueC | 0:055b4123367c | 82 | } |
DominiqueC | 3:70f9de0ba6e0 | 83 | //scope.set(0,emg0_value_f32); |
DominiqueC | 3:70f9de0ba6e0 | 84 | //scope.set(1,filtered_emg0_eindsignaal_abs); |
DominiqueC | 3:70f9de0ba6e0 | 85 | //scope.set(3,emg1_value_f32); |
DominiqueC | 3:70f9de0ba6e0 | 86 | //scope.set(4,filtered_emg1_eindsignaal_abs); |
DominiqueC | 3:70f9de0ba6e0 | 87 | //scope.send(); |
DominiqueC | 3:70f9de0ba6e0 | 88 | //} |
DominiqueC | 0:055b4123367c | 89 | |
DominiqueC | 0:055b4123367c | 90 | int main() |
DominiqueC | 0:055b4123367c | 91 | { |
DominiqueC | 0:055b4123367c | 92 | Ticker log_timer; |
DominiqueC | 0:055b4123367c | 93 | //set up filters. Use external array for constants |
DominiqueC | 0:055b4123367c | 94 | arm_biquad_cascade_df1_init_f32(¬ch,1 , notch_const, notch_states); |
DominiqueC | 0:055b4123367c | 95 | arm_biquad_cascade_df1_init_f32(&highpass,1 ,highpass_const,highpass_states); |
DominiqueC | 0:055b4123367c | 96 | arm_biquad_cascade_df1_init_f32(&lowpass,1 ,lowpass_const,lowpass_states); |
DominiqueC | 0:055b4123367c | 97 | |
DominiqueC | 0:055b4123367c | 98 | log_timer.attach(looper, 0.005); |
DominiqueC | 0:055b4123367c | 99 | while(1) //Loop |
DominiqueC | 0:055b4123367c | 100 | { |
DominiqueC | 0:055b4123367c | 101 | /*Empty!*/ |
DominiqueC | 0:055b4123367c | 102 | /*Everything is handled by the interrupt routine now!*/ |
DominiqueC | 0:055b4123367c | 103 | } |
DominiqueC | 0:055b4123367c | 104 | } |