Laura Heus / Mbed 2 deprecated EMGmeten_2

Bandpass, notch, abs en laagdoorlaat 3H

Dependencies:   HIDScope MODSERIAL TextLCD mbed-dsp mbed

Fork of EMGmeten by Laura Heus

EMGmeten.cpp@8:4b275b1667d8, 2014-10-31 (annotated)

Committer:
lauradeheus
Date:
Fri Oct 31 17:15:22 2014 +0000
Revision:
8:4b275b1667d8
Parent:
7:0e76120eb7ad 
Werkend_EMG plus pieken meten;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lauradeheus 0:b68a6d0451b8 1 #include "mbed.h"
lauradeheus 0:b68a6d0451b8 2 #include "HIDScope.h"
lauradeheus 2:5d64e4c95f5c 3 #include "arm_math.h"
lauradeheus 2:5d64e4c95f5c 4 #include "MODSERIAL.h"
lauradeheus 4:7150ed6ce984 5 #include "TextLCD.h"
lauradeheus 4:7150ed6ce984 6
lauradeheus 4:7150ed6ce984 7 #define EMG_treshhold 0,05
lauradeheus 0:b68a6d0451b8 8
lauradeheus 8:4b275b1667d8 9 //Serial pc(USBTX,USBRX);
lauradeheus 0:b68a6d0451b8 10 AnalogIn emg(PTB1); //Analog input
lauradeheus 8:4b275b1667d8 11 HIDScope scope(3); // Twee kanalen op de HIDScope
lauradeheus 4:7150ed6ce984 12 DigitalIn knop(PTD4); /*Digital input pin (knop) definieren*/
lauradeheus 4:7150ed6ce984 13 TextLCD lcd(PTD2, PTA12, PTB2, PTB3, PTC2, PTA13, TextLCD::LCD16x2);
lauradeheus 0:b68a6d0451b8 14
lauradeheus 4:7150ed6ce984 15 arm_biquad_casd_df1_inst_f32 lowpass_1; //2e orde lowpass biquad butterworthfilter 99Hz
lauradeheus 4:7150ed6ce984 16 arm_biquad_casd_df1_inst_f32 lowpass_2; //2e orde lowpass biquad butterworthfilter 3Hz
lauradeheus 4:7150ed6ce984 17 arm_biquad_casd_df1_inst_f32 highpass; //2e orde highpass biquad butterworthfilter 20Hz
lauradeheus 4:7150ed6ce984 18 arm_biquad_casd_df1_inst_f32 notch; //2e orde lowpass biquad butterworthfilter 50Hz
lauradeheus 1:b7a9fcf50776 19 float lowpass_1_const[] = {0.978030479206560 , 1.956060958413119 , 0.978030479206560 , -1.955578240315036 , -0.956543676511203};
lauradeheus 1:b7a9fcf50776 20 float lowpass_1_states[4];
lauradeheus 4:7150ed6ce984 21 float lowpass_2_const[] = {0.002080567135492 , 0.004161134270985 , 0.002080567135492 , 1.866892279711715 , -0.875214548253684}; //3Hz
lauradeheus 4:7150ed6ce984 22 //{0.0009446914586925257 , 0.0018893829173850514 , 0.0009446914586925257 , 1.911196288237583 , -0.914975054072353};//2Hz
lauradeheus 4:7150ed6ce984 23 //{0.00024135899874854145 , 0.0004827179974970829 , 0.00024135899874854145 , 1.9555778328194147 , -0.9565432688144089}; 1Hz
lauradeheus 1:b7a9fcf50776 24 float lowpass_2_states[4];
lauradeheus 1:b7a9fcf50776 25 float highpass_const[] = {0.638945525159022 , -1.277891050318045 , 0.638945525159022 , 1.142980502539901 , -0.412801598096189};
lauradeheus 0:b68a6d0451b8 26 float highpass_states[4];
lauradeheus 2:5d64e4c95f5c 27 float notch_const[] = {0.978048948305681 , 0.000000000000000 , 0.978048948305681 , 0.000000000000000 , -0.956097896611362};
lauradeheus 2:5d64e4c95f5c 28 float notch_states[4];
lauradeheus 8:4b275b1667d8 29 float emg_filtered;
lauradeheus 8:4b275b1667d8 30 float emg_max=0.15;
lauradeheus 8:4b275b1667d8 31 float emg_treshhold_laag = 0.3*emg_max;
lauradeheus 8:4b275b1667d8 32 float emg_treshhold_hoog = 0.7*emg_max;
lauradeheus 4:7150ed6ce984 33
lauradeheus 4:7150ed6ce984 34 bool aanspan;
lauradeheus 4:7150ed6ce984 35 int aantal_pieken;
lauradeheus 5:f93b7068c202 36 int doel;
lauradeheus 4:7150ed6ce984 37
lauradeheus 8:4b275b1667d8 38 void emg_filtering();
lauradeheus 4:7150ed6ce984 39 void pieken_tellen();
lauradeheus 8:4b275b1667d8 40 void emg_max_meting();
lauradeheus 8:4b275b1667d8 41
lauradeheus 8:4b275b1667d8 42 //void emg_max_meting(){
lauradeheus 8:4b275b1667d8 43 // if (emg_filtered>=emg_max)
lauradeheus 8:4b275b1667d8 44 // {
lauradeheus 8:4b275b1667d8 45 // emg_max=emg_filtered;
lauradeheus 8:4b275b1667d8 46 // }
lauradeheus 8:4b275b1667d8 47 // emg_treshhold_laag = 0.3*emg_max;
lauradeheus 8:4b275b1667d8 48 // emg_treshhold_hoog = 0.7*emg_max;
lauradeheus 8:4b275b1667d8 49 //}
lauradeheus 8:4b275b1667d8 50
lauradeheus 8:4b275b1667d8 51 void emg_filtering() {
lauradeheus 8:4b275b1667d8 52 uint16_t emg_value;
lauradeheus 8:4b275b1667d8 53 float emg_value_f32;
lauradeheus 8:4b275b1667d8 54 emg_value = emg.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V)
lauradeheus 8:4b275b1667d8 55 emg_value_f32 = emg.read();
lauradeheus 8:4b275b1667d8 56
lauradeheus 8:4b275b1667d8 57 arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32, &emg_filtered, 1 );
lauradeheus 8:4b275b1667d8 58 arm_biquad_cascade_df1_f32(&lowpass_1, &emg_filtered, &emg_filtered, 1 );
lauradeheus 8:4b275b1667d8 59 arm_biquad_cascade_df1_f32(&notch, &emg_filtered, &emg_filtered, 1);
lauradeheus 8:4b275b1667d8 60 emg_filtered = fabs(emg_filtered);
lauradeheus 8:4b275b1667d8 61 arm_biquad_cascade_df1_f32(&lowpass_2, &emg_filtered, &emg_filtered, 1 );
lauradeheus 8:4b275b1667d8 62
lauradeheus 8:4b275b1667d8 63 pieken_tellen();
lauradeheus 8:4b275b1667d8 64 doel = aantal_pieken-((aantal_pieken/3)*3)+1;
lauradeheus 8:4b275b1667d8 65
lauradeheus 8:4b275b1667d8 66 scope.set(0,emg_value); //uint value
lauradeheus 8:4b275b1667d8 67 scope.set(1,emg_filtered); //processed float
lauradeheus 8:4b275b1667d8 68 scope.set(2,doel);
lauradeheus 8:4b275b1667d8 69 scope.send();
lauradeheus 8:4b275b1667d8 70
lauradeheus 8:4b275b1667d8 71 lcd.cls();
lauradeheus 8:4b275b1667d8 72 lcd.printf("Hallo");
lauradeheus 8:4b275b1667d8 73 }
lauradeheus 8:4b275b1667d8 74
lauradeheus 8:4b275b1667d8 75 void pieken_tellen(){
lauradeheus 8:4b275b1667d8 76 if (emg_filtered>=emg_treshhold_hoog)
lauradeheus 8:4b275b1667d8 77 {
lauradeheus 8:4b275b1667d8 78 aanspan=true; //maak een variabele waarin je opslaat dat het signaal hoog is.
lauradeheus 8:4b275b1667d8 79 }
lauradeheus 8:4b275b1667d8 80 if (aanspan==true && emg_filtered<=emg_treshhold_laag)//== ipv =, anders wordt aanspan true gemaakt
lauradeheus 8:4b275b1667d8 81 {
lauradeheus 8:4b275b1667d8 82 aanspan=false;
lauradeheus 8:4b275b1667d8 83 aantal_pieken++;
lauradeheus 8:4b275b1667d8 84 doel = aantal_pieken-((aantal_pieken/3)*3)+1;
lauradeheus 8:4b275b1667d8 85 }
lauradeheus 8:4b275b1667d8 86 }
lauradeheus 4:7150ed6ce984 87 //char *lcd_r1 = new char[16];
lauradeheus 4:7150ed6ce984 88 //char *lcd_r2 = new char[16];
lauradeheus 0:b68a6d0451b8 89
lauradeheus 8:4b275b1667d8 90 /*
lauradeheus 8:4b275b1667d8 91 void emg_filtering()
lauradeheus 0:b68a6d0451b8 92 {
lauradeheus 0:b68a6d0451b8 93 uint16_t emg_value;
lauradeheus 0:b68a6d0451b8 94 float emg_value_f32;
lauradeheus 0:b68a6d0451b8 95 emg_value = emg.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V)
lauradeheus 0:b68a6d0451b8 96 emg_value_f32 = emg.read();
lauradeheus 0:b68a6d0451b8 97
lauradeheus 8:4b275b1667d8 98 arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32, &emg_filtered, 1 );
lauradeheus 8:4b275b1667d8 99 arm_biquad_cascade_df1_f32(&lowpass_1, &emg_filtered, &emg_filtered, 1 );
lauradeheus 8:4b275b1667d8 100 arm_biquad_cascade_df1_f32(&notch, &emg_filtered, &emg_filtered, 1);
lauradeheus 8:4b275b1667d8 101 emg_filtered = fabs(emg_filtered);
lauradeheus 2:5d64e4c95f5c 102 //emg_value_f32 = fabs(emg_value_f32);
lauradeheus 8:4b275b1667d8 103 arm_biquad_cascade_df1_f32(&lowpass_2, &emg_filtered, &emg_filtered, 1 );
lauradeheus 0:b68a6d0451b8 104
lauradeheus 6:740f08fad2c3 105 //EMG_max_meting();
lauradeheus 6:740f08fad2c3 106 pieken_tellen();
lauradeheus 6:740f08fad2c3 107 doel = aantal_pieken-((aantal_pieken/3)*3)+1;
lauradeheus 8:4b275b1667d8 108 //pc.printf("%d",doel);
lauradeheus 6:740f08fad2c3 109
lauradeheus 0:b68a6d0451b8 110 scope.set(0,emg_value); //uint value
lauradeheus 8:4b275b1667d8 111 scope.set(1,emg_filtered); //processed float
lauradeheus 8:4b275b1667d8 112 scope.set(2,doel);
lauradeheus 0:b68a6d0451b8 113 scope.send();
lauradeheus 0:b68a6d0451b8 114 }
lauradeheus 0:b68a6d0451b8 115
lauradeheus 8:4b275b1667d8 116 void emg_max_meting()
lauradeheus 6:740f08fad2c3 117 {
lauradeheus 7:0e76120eb7ad 118 //int i=0; // tijdspad
lauradeheus 7:0e76120eb7ad 119 //lcd.cls();
lauradeheus 7:0e76120eb7ad 120 //lcd.printf("Maximale\nEMGmeting");
lauradeheus 7:0e76120eb7ad 121 //for(i=0; i<300; i++)
lauradeheus 7:0e76120eb7ad 122 //{
lauradeheus 7:0e76120eb7ad 123 // wait(0.1);
lauradeheus 8:4b275b1667d8 124 if (emg_filtered>=emg_max)
lauradeheus 6:740f08fad2c3 125 {
lauradeheus 8:4b275b1667d8 126 emg_max=emg_filtered;
lauradeheus 6:740f08fad2c3 127 }
lauradeheus 7:0e76120eb7ad 128 //}
lauradeheus 7:0e76120eb7ad 129 //lcd.cls();
lauradeheus 7:0e76120eb7ad 130 //lcd.printf("Maximale EMG\nbepaald");
lauradeheus 7:0e76120eb7ad 131 //wait(3);
lauradeheus 8:4b275b1667d8 132 emg_treshhold_laag = 0.3*emg_max;
lauradeheus 8:4b275b1667d8 133 emg_treshhold_hoog = 0.7*emg_max;
lauradeheus 6:740f08fad2c3 134 }
lauradeheus 6:740f08fad2c3 135
lauradeheus 6:740f08fad2c3 136 void pieken_tellen()
lauradeheus 6:740f08fad2c3 137 {
lauradeheus 8:4b275b1667d8 138 if (emg_filtered>=emg_treshhold_hoog)
lauradeheus 6:740f08fad2c3 139 {
lauradeheus 6:740f08fad2c3 140 aanspan=true; //maak een variabele waarin je opslaat dat het signaal hoog is.
lauradeheus 6:740f08fad2c3 141 }
lauradeheus 8:4b275b1667d8 142 if (aanspan==true && emg_filtered<=emg_treshhold_laag)//== ipv =, anders wordt aanspan true gemaakt
lauradeheus 6:740f08fad2c3 143 {
lauradeheus 6:740f08fad2c3 144 aanspan=false;
lauradeheus 6:740f08fad2c3 145 aantal_pieken++;
lauradeheus 6:740f08fad2c3 146 }
lauradeheus 6:740f08fad2c3 147 }
lauradeheus 8:4b275b1667d8 148 */
lauradeheus 8:4b275b1667d8 149
lauradeheus 6:740f08fad2c3 150
lauradeheus 0:b68a6d0451b8 151 int main()
lauradeheus 0:b68a6d0451b8 152 {
lauradeheus 0:b68a6d0451b8 153 Ticker log_timer;
lauradeheus 0:b68a6d0451b8 154
lauradeheus 1:b7a9fcf50776 155 arm_biquad_cascade_df1_init_f32(&lowpass_1,1 , lowpass_1_const, lowpass_1_states);
lauradeheus 0:b68a6d0451b8 156 arm_biquad_cascade_df1_init_f32(&highpass,1 , highpass_const, highpass_states);
lauradeheus 2:5d64e4c95f5c 157 arm_biquad_cascade_df1_init_f32(&notch,1 , notch_const, notch_states);
lauradeheus 3:c82170d8b6c8 158 arm_biquad_cascade_df1_init_f32(&lowpass_2,1 , lowpass_2_const, lowpass_2_states);
lauradeheus 0:b68a6d0451b8 159
lauradeheus 8:4b275b1667d8 160 log_timer.attach(emg_filtering, 0.005);
lauradeheus 0:b68a6d0451b8 161
lauradeheus 0:b68a6d0451b8 162 while(1) //Loop
lauradeheus 0:b68a6d0451b8 163 {
lauradeheus 8:4b275b1667d8 164 //lcd.cls();
lauradeheus 8:4b275b1667d8 165 //lcd.printf("Te raken doel =\n%d", doel);
lauradeheus 8:4b275b1667d8 166 //pc.baud(9600);
lauradeheus 8:4b275b1667d8 167 //(0.02);
lauradeheus 0:b68a6d0451b8 168 /*Empty!*/
lauradeheus 0:b68a6d0451b8 169 /*Everything is handled by the interrupt routine now!*/
lauradeheus 2:5d64e4c95f5c 170 //pc.baud(9600);
lauradeheus 0:b68a6d0451b8 171 }
lauradeheus 6:740f08fad2c3 172 }