group14 - k9 / Mbed 2 deprecated robot_2

2nd draft

Dependencies:   HIDScope MODSERIAL QEI biquadFilter mbed Servo

Fork of robot_mockup by Martijn Kern

main.cpp@52:8a8c53dc8547, 2015-10-27 (annotated)

Committer:
Vigilance88
Date:
Tue Oct 27 09:32:06 2015 +0000
Revision:
52:8a8c53dc8547
Parent:
51:e4a0ce7ff4b8
Child:
53:bf0d97487e84
met deze gains werkt het redelijk bij ouder filter

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vsluiter 0:32bb76391d89 1 #include "mbed.h"
vsluiter 11:ce72ec658a95 2 #include "HIDScope.h"
Vigilance88 18:44905b008f44 3 #include "MODSERIAL.h"
Vigilance88 18:44905b008f44 4 #include "biquadFilter.h"
Vigilance88 18:44905b008f44 5 #include "QEI.h"
Vigilance88 21:d6a46315d5f5 6 #include "math.h"
Vigilance88 26:fe3a5469dd6b 7 #include <string>
Vigilance88 21:d6a46315d5f5 8
Vigilance88 21:d6a46315d5f5 9 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 10 -------------------------------- BIOROBOTICS GROUP 14 ----------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 11 --------------------------------------------------------------------------------------------------------------------*/
vsluiter 0:32bb76391d89 12
Vigilance88 18:44905b008f44 13 //Define important constants in memory
Vigilance88 21:d6a46315d5f5 14 #define PI 3.14159265
Vigilance88 18:44905b008f44 15 #define SAMPLE_RATE 0.002 //500 Hz EMG sample rate
Vigilance88 18:44905b008f44 16 #define CONTROL_RATE 0.01 //100 Hz Control rate
Vigilance88 49:6515c045cfd6 17 #define ENCODER_CPR 4200 //both motor encoders have 64 (X4), 32 (X2) counts per revolution of motor shaft
Vigilance88 49:6515c045cfd6 18 //gearbox 1:131.25 -> 4200 counts per revolution of the output shaft (X2),
Vigilance88 26:fe3a5469dd6b 19 #define PWM_PERIOD 0.0001 //10k Hz pwm motor frequency. Higher -> too hot, lower -> motor doesnt respond correctly
Vigilance88 21:d6a46315d5f5 20 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 21 ---- OBJECTS ---------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 22 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 21:d6a46315d5f5 23
Vigilance88 18:44905b008f44 24 MODSERIAL pc(USBTX,USBRX); //serial communication
Vigilance88 18:44905b008f44 25
Vigilance88 36:4d4fc200171b 26 //Debug LEDs
Vigilance88 25:49ccdc98639a 27 DigitalOut red(LED_RED);
Vigilance88 25:49ccdc98639a 28 DigitalOut green(LED_GREEN);
Vigilance88 25:49ccdc98639a 29 DigitalOut blue(LED_BLUE);
Vigilance88 25:49ccdc98639a 30
Vigilance88 21:d6a46315d5f5 31 //EMG shields
Vigilance88 18:44905b008f44 32 AnalogIn emg1(A0); //Analog input - Biceps EMG
Vigilance88 18:44905b008f44 33 AnalogIn emg2(A1); //Analog input - Triceps EMG
Vigilance88 18:44905b008f44 34 AnalogIn emg3(A2); //Analog input - Flexor EMG
Vigilance88 18:44905b008f44 35 AnalogIn emg4(A3); //Analog input - Extensor EMG
Vigilance88 18:44905b008f44 36
Vigilance88 18:44905b008f44 37 Ticker sample_timer; //Ticker for EMG sampling
Vigilance88 18:44905b008f44 38 Ticker control_timer; //Ticker for control loop
Vigilance88 18:44905b008f44 39 HIDScope scope(4); //Scope 4 channels
Vigilance88 18:44905b008f44 40
Vigilance88 18:44905b008f44 41 // AnalogIn potmeter(A4); //potmeters
Vigilance88 18:44905b008f44 42 // AnalogIn potmeter2(A5); //
Vigilance88 18:44905b008f44 43
Vigilance88 21:d6a46315d5f5 44 //Encoders
Vigilance88 18:44905b008f44 45 QEI Encoder1(D13,D12,NC,32); //channel A and B from encoder, counts = Encoder.getPulses();
Vigilance88 18:44905b008f44 46 QEI Encoder2(D10,D9,NC,32); //channel A and B from encoder,
Vigilance88 21:d6a46315d5f5 47
Vigilance88 21:d6a46315d5f5 48 //Speed and Direction of motors - D4 (dir) and D5(speed) = motor 2, D7(dir) and D6(speed) = motor 1
Vigilance88 21:d6a46315d5f5 49 PwmOut pwm_motor1(D6); //PWM motor 1
Vigilance88 21:d6a46315d5f5 50 PwmOut pwm_motor2(D5); //PWM motor 2
Vigilance88 26:fe3a5469dd6b 51
Vigilance88 18:44905b008f44 52 DigitalOut dir_motor1(D7); //Direction motor 1
Vigilance88 18:44905b008f44 53 DigitalOut dir_motor2(D4); //Direction motor 2
Vigilance88 18:44905b008f44 54
Vigilance88 24:56db31267f10 55 //Limit Switches
Vigilance88 28:743485bb51e4 56 InterruptIn shoulder_limit(D2); //using FRDM buttons
Vigilance88 28:743485bb51e4 57 InterruptIn elbow_limit(D3); //using FRDM buttons
Vigilance88 26:fe3a5469dd6b 58
Vigilance88 26:fe3a5469dd6b 59 //Other buttons
Vigilance88 26:fe3a5469dd6b 60 DigitalIn button1(PTA4); //using FRDM buttons
Vigilance88 26:fe3a5469dd6b 61 DigitalIn button2(PTC6); //using FRDM buttons
Vigilance88 26:fe3a5469dd6b 62
Vigilance88 26:fe3a5469dd6b 63 /*Text colors ASCII code: Set Attribute Mode <ESC>[{attr1};...;{attrn}m
Vigilance88 26:fe3a5469dd6b 64
Vigilance88 26:fe3a5469dd6b 65 \ 0 3 3 - ESC
Vigilance88 26:fe3a5469dd6b 66 [ 3 0 m - black
Vigilance88 26:fe3a5469dd6b 67 [ 3 1 m - red
Vigilance88 26:fe3a5469dd6b 68 [ 3 2 m - green
Vigilance88 26:fe3a5469dd6b 69 [ 3 3 m - yellow
Vigilance88 26:fe3a5469dd6b 70 [ 3 4 m - blue
Vigilance88 26:fe3a5469dd6b 71 [ 3 5 m - magenta
Vigilance88 26:fe3a5469dd6b 72 [ 3 6 m - cyan
Vigilance88 26:fe3a5469dd6b 73 [ 3 7 m - white
Vigilance88 26:fe3a5469dd6b 74 [ 0 m - reset attributes
Vigilance88 26:fe3a5469dd6b 75
Vigilance88 26:fe3a5469dd6b 76 Put the text you want to color between GREEN_ and _GREEN
Vigilance88 26:fe3a5469dd6b 77 */
Vigilance88 26:fe3a5469dd6b 78 string GREEN_ = "\033[32m"; //esc - green
Vigilance88 26:fe3a5469dd6b 79 string _GREEN = "\033[0m"; //esc - reset
Vigilance88 24:56db31267f10 80
Vigilance88 21:d6a46315d5f5 81
Vigilance88 21:d6a46315d5f5 82 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 83 ---- DECLARE VARIABLES -----------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 84 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 21:d6a46315d5f5 85
Vigilance88 47:c52f9b4c90c4 86 //EMG variables: raw EMG - filtered EMG - maximum voluntary contraction - max amplitude during relaxation.
Vigilance88 38:c8ac615d0c8f 87 double emg_biceps; double biceps_power; double bicepsMVC = 0; double bicepsmin=0;
Vigilance88 38:c8ac615d0c8f 88 double emg_triceps; double triceps_power; double tricepsMVC = 0; double tricepsmin=0;
Vigilance88 38:c8ac615d0c8f 89 double emg_flexor; double flexor_power; double flexorMVC = 0; double flexormin=0;
Vigilance88 38:c8ac615d0c8f 90 double emg_extens; double extens_power; double extensMVC = 0; double extensmin=0;
Vigilance88 47:c52f9b4c90c4 91
Vigilance88 39:e77f844d10d9 92 //Normalize and compare variables
Vigilance88 39:e77f844d10d9 93 double biceps, triceps, flexor, extens; //Storage for normalized emg
Vigilance88 39:e77f844d10d9 94 double xdir, ydir; //EMG reference position directions
Vigilance88 39:e77f844d10d9 95 double xpower, ypower; //EMG reference magnitude
Vigilance88 47:c52f9b4c90c4 96 double dx, dy; //Integral
Vigilance88 47:c52f9b4c90c4 97 double emg_control_time; //Elapsed time in EMG control
Vigilance88 46:c8c5c455dd51 98
Vigilance88 44:145827f5b091 99 //Threshold moving average
Vigilance88 47:c52f9b4c90c4 100 const int window=100; //100 samples
Vigilance88 47:c52f9b4c90c4 101 int i=0; //movavg array index
Vigilance88 47:c52f9b4c90c4 102 double movavg1[window]; //moving average arrays with size of window
Vigilance88 44:145827f5b091 103 double movavg2[window];
Vigilance88 44:145827f5b091 104 double movavg3[window];
Vigilance88 44:145827f5b091 105 double movavg4[window];
Vigilance88 47:c52f9b4c90c4 106 double biceps_avg, triceps_avg,flexor_avg, extens_avg; //sum divided by window size
Vigilance88 46:c8c5c455dd51 107
Vigilance88 36:4d4fc200171b 108 int muscle; //Muscle selector for MVC measurement, 1 = first emg etc.
Vigilance88 47:c52f9b4c90c4 109 double calibrate_time; //Elapsed time for each measurement
Vigilance88 25:49ccdc98639a 110
Vigilance88 24:56db31267f10 111 //PID variables
Vigilance88 36:4d4fc200171b 112 double u1; double u2; //Output of PID controller (PWM value for motor 1 and 2)
Vigilance88 47:c52f9b4c90c4 113 double m1_error=0; double m1_e_int=0; double m1_e_prev=0; //Error, integrated error, previous error motor 1
Vigilance88 50:54f71544964c 114 const double m1_kp=10; const double m1_ki=0.25; const double m1_kd=0.5; //Proportional, integral and derivative gains.
Vigilance88 24:56db31267f10 115
Vigilance88 47:c52f9b4c90c4 116 double m2_error=0; double m2_e_int=0; double m2_e_prev=0; //Error, integrated error, previous error motor 2
Vigilance88 50:54f71544964c 117 const double m2_kp=5; const double m2_ki=0.125; const double m2_kd=0.25; //Proportional, integral and derivative gains.
Vigilance88 24:56db31267f10 118
Vigilance88 36:4d4fc200171b 119 //Calibration bools, checks if elbow/shoulder limits are hit
Vigilance88 47:c52f9b4c90c4 120 volatile bool done1 = false;
Vigilance88 47:c52f9b4c90c4 121 volatile bool done2 = false;
Vigilance88 47:c52f9b4c90c4 122 volatile bool calibrating = false;
Vigilance88 32:76c4d7bb2022 123
Vigilance88 24:56db31267f10 124 //highpass filter 20 Hz
Vigilance88 24:56db31267f10 125 const double high_b0 = 0.956543225556877;
Vigilance88 24:56db31267f10 126 const double high_b1 = -1.91308645113754;
Vigilance88 24:56db31267f10 127 const double high_b2 = 0.956543225556877;
Vigilance88 24:56db31267f10 128 const double high_a1 = -1.91197067426073;
Vigilance88 24:56db31267f10 129 const double high_a2 = 0.9149758348014341;
Vigilance88 24:56db31267f10 130
Vigilance88 24:56db31267f10 131 //notchfilter 50Hz
Vigilance88 36:4d4fc200171b 132 /*
Vigilance88 24:56db31267f10 133 Method = Butterworth
Vigilance88 24:56db31267f10 134 Biquad = Yes
Vigilance88 24:56db31267f10 135 Stable = Yes
Vigilance88 24:56db31267f10 136 Sampling Frequency = 500Hz
Vigilance88 24:56db31267f10 137 Filter Order = 2
Vigilance88 24:56db31267f10 138
Vigilance88 24:56db31267f10 139 Band Frequencies (Hz) Att/Ripple (dB) Biquad #1 Biquad #2
Vigilance88 24:56db31267f10 140
Vigilance88 24:56db31267f10 141 1 0, 48 0.001 Gain = 1.000000 Gain = 0.973674
Vigilance88 24:56db31267f10 142 2 49, 51 -60.000 B = [ 1.00000000000, -1.61816176147, 1.00000000000] B = [ 1.00000000000, -1.61816176147, 1.00000000000]
Vigilance88 24:56db31267f10 143 3 52, 250 0.001 A = [ 1.00000000000, -1.58071559235, 0.97319685401] A = [ 1.00000000000, -1.61244708381, 0.97415116257]
Vigilance88 24:56db31267f10 144 */
Vigilance88 24:56db31267f10 145
Vigilance88 24:56db31267f10 146 //biquad 1
Vigilance88 24:56db31267f10 147 const double notch1gain = 1.000000;
Vigilance88 24:56db31267f10 148 const double notch1_b0 = 1;
Vigilance88 24:56db31267f10 149 const double notch1_b1 = -1.61816176147 * notch1gain;
Vigilance88 24:56db31267f10 150 const double notch1_b2 = 1.00000000000 * notch1gain;
Vigilance88 24:56db31267f10 151 const double notch1_a1 = -1.58071559235 * notch1gain;
Vigilance88 24:56db31267f10 152 const double notch1_a2 = 0.97319685401 * notch1gain;
Vigilance88 24:56db31267f10 153
Vigilance88 24:56db31267f10 154 //biquad 2
Vigilance88 24:56db31267f10 155 const double notch2gain = 0.973674;
Vigilance88 24:56db31267f10 156 const double notch2_b0 = 1 * notch2gain;
Vigilance88 24:56db31267f10 157 const double notch2_b1 = -1.61816176147 * notch2gain;
Vigilance88 24:56db31267f10 158 const double notch2_b2 = 1.00000000000 * notch2gain;
Vigilance88 24:56db31267f10 159 const double notch2_a1 = -1.61244708381 * notch2gain;
Vigilance88 24:56db31267f10 160 const double notch2_a2 = 0.97415116257 * notch2gain;
Vigilance88 24:56db31267f10 161
Vigilance88 26:fe3a5469dd6b 162 //lowpass filter 7 Hz - envelope
Vigilance88 24:56db31267f10 163 const double low_b0 = 0.000119046743110057;
Vigilance88 24:56db31267f10 164 const double low_b1 = 0.000238093486220118;
Vigilance88 24:56db31267f10 165 const double low_b2 = 0.000119046743110057;
Vigilance88 24:56db31267f10 166 const double low_a1 = -1.968902268531908;
Vigilance88 24:56db31267f10 167 const double low_a2 = 0.9693784555043481;
Vigilance88 21:d6a46315d5f5 168
Vigilance88 51:e4a0ce7ff4b8 169 //Derivative lowpass filter 60 Hz - remove error noise
Vigilance88 51:e4a0ce7ff4b8 170 const double derlow_b0 = 0.027859766117136;
Vigilance88 51:e4a0ce7ff4b8 171 const double derlow_b1 = 0.0557195322342721;
Vigilance88 51:e4a0ce7ff4b8 172 const double derlow_b2 = 0.027859766117136;
Vigilance88 51:e4a0ce7ff4b8 173 const double derlow_a1 = -1.47548044359265;
Vigilance88 51:e4a0ce7ff4b8 174 const double derlow_a2 = 0.58691950806119;
Vigilance88 51:e4a0ce7ff4b8 175
Vigilance88 36:4d4fc200171b 176 //Forward Kinematics
Vigilance88 36:4d4fc200171b 177 const double l1 = 0.25; const double l2 = 0.25; //Arm lengths
Vigilance88 36:4d4fc200171b 178 double current_x; double current_y; //Current position
Vigilance88 36:4d4fc200171b 179 double theta1; double theta2; //Current angles
Vigilance88 36:4d4fc200171b 180 double rpc; //Encoder resolution: radians per count
Vigilance88 36:4d4fc200171b 181
Vigilance88 36:4d4fc200171b 182 //Reference position
Vigilance88 28:743485bb51e4 183 double x; double y;
Vigilance88 36:4d4fc200171b 184
Vigilance88 39:e77f844d10d9 185 //Select whether to use Trig or DLS method, emg true or false
Vigilance88 38:c8ac615d0c8f 186 int control_method;
Vigilance88 39:e77f844d10d9 187 bool emg_control;
Vigilance88 38:c8ac615d0c8f 188
Vigilance88 36:4d4fc200171b 189 //Inverse Kinematics - Trig / Gonio method.
Vigilance88 36:4d4fc200171b 190 //First convert reference position to angle needed, then compare that angle to current angle.
Vigilance88 36:4d4fc200171b 191 double dtheta1; double dtheta2; //reference angles
Vigilance88 36:4d4fc200171b 192 double costheta1; double sintheta1; //helper variables
Vigilance88 36:4d4fc200171b 193 double costheta2; double sintheta2; //
Vigilance88 36:4d4fc200171b 194
Vigilance88 36:4d4fc200171b 195 //Inverse Kinematics - Damped least squares method.
Vigilance88 36:4d4fc200171b 196 //Angle error is directly calculated from position error: dq = [DLS matrix] * position_error
Vigilance88 36:4d4fc200171b 197 // |DLS1 DLS2|
Vigilance88 36:4d4fc200171b 198 double dls1, dls2, dls3, dls4; //DLS matrix: |DLS3 DLS4|
Vigilance88 36:4d4fc200171b 199 double q1_error, q2_error; //Angle errors
Vigilance88 47:c52f9b4c90c4 200 double x_error, y_error; //Position errors
Vigilance88 36:4d4fc200171b 201 double lambda=0.1; //Damping constant
Vigilance88 21:d6a46315d5f5 202
Vigilance88 41:55face19e06b 203 //Mechanical Limits
Vigilance88 41:55face19e06b 204 int theta1_cal, theta2_cal; //Pulse counts at mechanical limits.
Vigilance88 41:55face19e06b 205 double theta1_lower=0.698132, theta1_upper=2.35619; //motor1: lower limit 40 degrees, upper limit 135
Vigilance88 41:55face19e06b 206 double theta2_lower=0.750492, theta2_upper=2.40855; //motor2: lower limit 43 degrees, upper limit 138 degrees.
Vigilance88 41:55face19e06b 207
Vigilance88 21:d6a46315d5f5 208 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 24:56db31267f10 209 ---- Filters ---------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 210 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 24:56db31267f10 211
Vigilance88 24:56db31267f10 212 //Using biquadFilter library
Vigilance88 24:56db31267f10 213 //Syntax: biquadFilter filter(a1, a2, b0, b1, b2); coefficients. Call with: filter.step(u), with u signal to be filtered.
Vigilance88 26:fe3a5469dd6b 214 //Biceps
Vigilance88 24:56db31267f10 215 biquadFilter highpass( high_a1 , high_a2 , high_b0 , high_b1 , high_b2 ); // removes DC and movement artefacts
Vigilance88 24:56db31267f10 216 biquadFilter notch1( notch1_a1 , notch1_a2 , notch1_b0 , notch1_b1 , notch1_b2 ); // removes 49-51 Hz power interference
Vigilance88 24:56db31267f10 217 biquadFilter notch2( notch2_a1 , notch2_a2 , notch2_b0 , notch2_b1 , notch2_b2 ); //
Vigilance88 24:56db31267f10 218 biquadFilter lowpass( low_a1 , low_a2 , low_b0 , low_b1 , low_b2 ); // EMG envelope
Vigilance88 25:49ccdc98639a 219
Vigilance88 26:fe3a5469dd6b 220 //Triceps
Vigilance88 25:49ccdc98639a 221 biquadFilter highpass2( high_a1 , high_a2 , high_b0 , high_b1 , high_b2 ); // removes DC and movement artefacts
Vigilance88 26:fe3a5469dd6b 222 biquadFilter notch1_2( notch1_a1 , notch1_a2 , notch1_b0 , notch1_b1 , notch1_b2 ); // removes 49-51 Hz power interference
Vigilance88 26:fe3a5469dd6b 223 biquadFilter notch2_2( notch2_a1 , notch2_a2 , notch2_b0 , notch2_b1 , notch2_b2 ); //
Vigilance88 25:49ccdc98639a 224 biquadFilter lowpass2( low_a1 , low_a2 , low_b0 , low_b1 , low_b2 ); // EMG envelope
Vigilance88 25:49ccdc98639a 225
Vigilance88 26:fe3a5469dd6b 226 //Flexor
Vigilance88 25:49ccdc98639a 227 biquadFilter highpass3( high_a1 , high_a2 , high_b0 , high_b1 , high_b2 ); // removes DC and movement artefacts
Vigilance88 26:fe3a5469dd6b 228 biquadFilter notch1_3( notch1_a1 , notch1_a2 , notch1_b0 , notch1_b1 , notch1_b2 ); // removes 49-51 Hz power interference
Vigilance88 26:fe3a5469dd6b 229 biquadFilter notch2_3( notch2_a1 , notch2_a2 , notch2_b0 , notch2_b1 , notch2_b2 ); //
Vigilance88 25:49ccdc98639a 230 biquadFilter lowpass3( low_a1 , low_a2 , low_b0 , low_b1 , low_b2 ); // EMG envelope
Vigilance88 25:49ccdc98639a 231
Vigilance88 26:fe3a5469dd6b 232 //Extensor
Vigilance88 25:49ccdc98639a 233 biquadFilter highpass4( high_a1 , high_a2 , high_b0 , high_b1 , high_b2 ); // removes DC and movement artefacts
Vigilance88 26:fe3a5469dd6b 234 biquadFilter notch1_4( notch1_a1 , notch1_a2 , notch1_b0 , notch1_b1 , notch1_b2 ); // removes 49-51 Hz power interference
Vigilance88 26:fe3a5469dd6b 235 biquadFilter notch2_4( notch2_a1 , notch2_a2 , notch2_b0 , notch2_b1 , notch2_b2 ); //
Vigilance88 25:49ccdc98639a 236 biquadFilter lowpass4( low_a1 , low_a2 , low_b0 , low_b1 , low_b2 ); // EMG envelope
Vigilance88 25:49ccdc98639a 237
Vigilance88 51:e4a0ce7ff4b8 238 //PID filter (lowpass 60 Hz)
Vigilance88 51:e4a0ce7ff4b8 239 biquadFilter derfilter1( derlow_a1 , derlow_a2 , derlow_b0 , derlow_b1 , derlow_b2 ); // derivative filter
Vigilance88 51:e4a0ce7ff4b8 240 biquadFilter derfilter2( derlow_a1 , derlow_a2 , derlow_b0 , derlow_b1 , derlow_b2 ); // derivative filter
Vigilance88 40:d62f96ed44c0 241
Vigilance88 24:56db31267f10 242 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 24:56db31267f10 243 ---- DECLARE FUNCTION NAMES ------------------------------------------------------------------------------------------
Vigilance88 24:56db31267f10 244 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 26:fe3a5469dd6b 245
Vigilance88 26:fe3a5469dd6b 246 void sample_filter(void); //Sampling and filtering
Vigilance88 26:fe3a5469dd6b 247 void control(); //Control - reference -> error -> pid -> motor output
Vigilance88 37:4d7b7ced20ef 248 void dlscontrol(); //Damped Least Squares method
Vigilance88 37:4d7b7ced20ef 249 void calibrate_emg(); //Instructions + measurement of Min and MVC of each muscle
Vigilance88 26:fe3a5469dd6b 250 void emg_mvc(); //Helper funcion for storing MVC value
Vigilance88 37:4d7b7ced20ef 251 void emg_min(); //Helper function for storing Min value
Vigilance88 26:fe3a5469dd6b 252 void calibrate_arm(void); //Calibration of the arm with limit switches
Vigilance88 26:fe3a5469dd6b 253 void start_sampling(void); //Attaches the sample_filter function to a 500Hz ticker
Vigilance88 26:fe3a5469dd6b 254 void stop_sampling(void); //Stops sample_filter
Vigilance88 26:fe3a5469dd6b 255 void start_control(void); //Attaches the control function to a 100Hz ticker
Vigilance88 26:fe3a5469dd6b 256 void stop_control(void); //Stops control function
Vigilance88 37:4d7b7ced20ef 257
Vigilance88 26:fe3a5469dd6b 258 //Keeps the input between min and max value
Vigilance88 24:56db31267f10 259 void keep_in_range(double * in, double min, double max);
Vigilance88 26:fe3a5469dd6b 260
Vigilance88 26:fe3a5469dd6b 261 //Reusable PID controller, previous and integral error need to be passed by reference
Vigilance88 21:d6a46315d5f5 262 double pid(double error, double kp, double ki, double kd,double &e_int, double &e_prev);
Vigilance88 47:c52f9b4c90c4 263 double pid2(double error, double kp, double ki, double kd,double &e_int, double &e_prev);
Vigilance88 18:44905b008f44 264
Vigilance88 26:fe3a5469dd6b 265 //Menu functions
Vigilance88 21:d6a46315d5f5 266 void mainMenu();
Vigilance88 21:d6a46315d5f5 267 void caliMenu();
Vigilance88 28:743485bb51e4 268 void controlMenu();
Vigilance88 29:948b0b14f6be 269 void controlButtons();
Vigilance88 26:fe3a5469dd6b 270 void clearTerminal();
Vigilance88 28:743485bb51e4 271 void emgInstructions();
Vigilance88 28:743485bb51e4 272 void titleBox();
Vigilance88 26:fe3a5469dd6b 273
Vigilance88 32:76c4d7bb2022 274 //Limit switches - power off motors if switches hit (rising edge interrupt)
Vigilance88 47:c52f9b4c90c4 275 void calibrate(void);
Vigilance88 32:76c4d7bb2022 276 void shoulder();
Vigilance88 32:76c4d7bb2022 277 void elbow();
Vigilance88 21:d6a46315d5f5 278
Vigilance88 21:d6a46315d5f5 279 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 280 ---- MAIN LOOP -------------------------------------------------------------------------------------------------------
Vigilance88 21:d6a46315d5f5 281 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 21:d6a46315d5f5 282
Vigilance88 21:d6a46315d5f5 283 int main()
Vigilance88 21:d6a46315d5f5 284 {
Vigilance88 29:948b0b14f6be 285 pc.baud(115200); //serial baudrate
Vigilance88 30:a9fdd3202ca2 286 red=1; green=1; blue=1; //Make sure debug LEDs are off
Vigilance88 26:fe3a5469dd6b 287
Vigilance88 50:54f71544964c 288 //theta1_cal = floor(theta1_lower * (4200/(2*PI)));
Vigilance88 50:54f71544964c 289 //Encoder1.setPulses(theta1_cal); //edited QEI library: added setPulses()
Vigilance88 46:c8c5c455dd51 290
Vigilance88 46:c8c5c455dd51 291 //Mechanical limit 43 degrees -> 43*(4200/360) = 350
Vigilance88 50:54f71544964c 292 //theta2_cal = floor(theta2_lower * (4200/(2*PI)));
Vigilance88 50:54f71544964c 293 //Encoder2.setPulses(theta2_cal);
Vigilance88 46:c8c5c455dd51 294
Vigilance88 50:54f71544964c 295 //x = 0.2220;
Vigilance88 50:54f71544964c 296 //y = 0.4088;
Vigilance88 46:c8c5c455dd51 297
Vigilance88 26:fe3a5469dd6b 298 //Set PwmOut frequency to 10k Hz
Vigilance88 42:b9d26b1218b0 299 pwm_motor1.period(0.001);
Vigilance88 42:b9d26b1218b0 300 pwm_motor2.period(0.001);
Vigilance88 26:fe3a5469dd6b 301
Vigilance88 26:fe3a5469dd6b 302 clearTerminal(); //Clear the putty window
Vigilance88 26:fe3a5469dd6b 303
Vigilance88 24:56db31267f10 304 // make a menu, user has to initiate next step
Vigilance88 28:743485bb51e4 305 titleBox();
Vigilance88 26:fe3a5469dd6b 306 mainMenu();
Vigilance88 47:c52f9b4c90c4 307
Vigilance88 32:76c4d7bb2022 308 char command=0;
Vigilance88 27:d1814e271a95 309
Vigilance88 28:743485bb51e4 310 while(command != 'Q' && command != 'q')
Vigilance88 28:743485bb51e4 311 {
Vigilance88 28:743485bb51e4 312 if(pc.readable()){
Vigilance88 28:743485bb51e4 313 command = pc.getc();
Vigilance88 28:743485bb51e4 314
Vigilance88 28:743485bb51e4 315 switch(command){
Vigilance88 28:743485bb51e4 316
Vigilance88 28:743485bb51e4 317 case 'c':
Vigilance88 47:c52f9b4c90c4 318 case 'C': {
Vigilance88 28:743485bb51e4 319 pc.printf("\n\r => You chose calibration.\r\n\n");
Vigilance88 28:743485bb51e4 320 caliMenu();
Vigilance88 28:743485bb51e4 321
Vigilance88 28:743485bb51e4 322 char command2=0;
Vigilance88 28:743485bb51e4 323
Vigilance88 28:743485bb51e4 324 while(command2 != 'B' && command2 != 'b'){
Vigilance88 28:743485bb51e4 325 command2 = pc.getc();
Vigilance88 28:743485bb51e4 326 switch(command2){
Vigilance88 28:743485bb51e4 327 case 'a':
Vigilance88 28:743485bb51e4 328 case 'A':
Vigilance88 28:743485bb51e4 329 pc.printf("\n\r => Arm Calibration Starting... please wait \n\r");
Vigilance88 28:743485bb51e4 330 calibrate_arm();
Vigilance88 28:743485bb51e4 331 wait(1);
Vigilance88 28:743485bb51e4 332 caliMenu();
Vigilance88 28:743485bb51e4 333 break;
Vigilance88 28:743485bb51e4 334
Vigilance88 28:743485bb51e4 335 case 'e':
Vigilance88 28:743485bb51e4 336 case 'E':
Vigilance88 28:743485bb51e4 337 pc.printf("\n\r => EMG Calibration Starting... please wait \n\r");
Vigilance88 28:743485bb51e4 338 wait(1);
Vigilance88 28:743485bb51e4 339 emgInstructions();
Vigilance88 28:743485bb51e4 340 calibrate_emg();
Vigilance88 32:76c4d7bb2022 341 pc.printf("\n\r------------------------- \n\r");
Vigilance88 28:743485bb51e4 342 pc.printf("\n\r EMG Calibration complete \n\r");
Vigilance88 32:76c4d7bb2022 343 pc.printf("\n\r------------------------- \n\r");
Vigilance88 28:743485bb51e4 344 caliMenu();
Vigilance88 28:743485bb51e4 345 break;
Vigilance88 28:743485bb51e4 346
Vigilance88 28:743485bb51e4 347 case 'b':
Vigilance88 28:743485bb51e4 348 case 'B':
Vigilance88 28:743485bb51e4 349 pc.printf("\n\r => Going back to main menu.. \n\r");
Vigilance88 28:743485bb51e4 350 mainMenu();
Vigilance88 28:743485bb51e4 351 break;
Vigilance88 28:743485bb51e4 352 }//end switch
Vigilance88 28:743485bb51e4 353
Vigilance88 28:743485bb51e4 354 }//end while
Vigilance88 28:743485bb51e4 355 break;
Vigilance88 47:c52f9b4c90c4 356 }//end case c C
Vigilance88 35:7d9fca0b1545 357 case 't':
Vigilance88 35:7d9fca0b1545 358 case 'T':
Vigilance88 39:e77f844d10d9 359 pc.printf("=> You chose TRIG button control \r\n\n");
Vigilance88 28:743485bb51e4 360 wait(1);
Vigilance88 28:743485bb51e4 361 start_sampling();
Vigilance88 28:743485bb51e4 362 wait(1);
Vigilance88 39:e77f844d10d9 363 emg_control=false;
Vigilance88 38:c8ac615d0c8f 364 control_method=1;
Vigilance88 28:743485bb51e4 365 start_control();
Vigilance88 28:743485bb51e4 366 wait(1);
Vigilance88 29:948b0b14f6be 367 controlButtons();
Vigilance88 28:743485bb51e4 368 break;
Vigilance88 35:7d9fca0b1545 369 case 'd':
Vigilance88 35:7d9fca0b1545 370 case 'D':
Vigilance88 39:e77f844d10d9 371 pc.printf("=> You chose DLS button control \r\n\n");
Vigilance88 35:7d9fca0b1545 372 wait(1);
Vigilance88 35:7d9fca0b1545 373 start_sampling();
Vigilance88 35:7d9fca0b1545 374 wait(1);
Vigilance88 39:e77f844d10d9 375 emg_control=false;
Vigilance88 38:c8ac615d0c8f 376 control_method=2;
Vigilance88 38:c8ac615d0c8f 377 start_control();
Vigilance88 35:7d9fca0b1545 378 wait(1);
Vigilance88 35:7d9fca0b1545 379 controlButtons();
Vigilance88 35:7d9fca0b1545 380 break;
Vigilance88 39:e77f844d10d9 381 case 'e':
Vigilance88 39:e77f844d10d9 382 case 'E':
Vigilance88 39:e77f844d10d9 383 pc.printf("=> You chose EMG DLS control \r\n\n");
Vigilance88 39:e77f844d10d9 384 wait(1);
Vigilance88 39:e77f844d10d9 385 start_sampling();
Vigilance88 47:c52f9b4c90c4 386 wait(1);
Vigilance88 46:c8c5c455dd51 387 emg_control_time = 0;
Vigilance88 39:e77f844d10d9 388 emg_control=true;
Vigilance88 39:e77f844d10d9 389 control_method=2;
Vigilance88 47:c52f9b4c90c4 390
Vigilance88 39:e77f844d10d9 391 start_control();
Vigilance88 39:e77f844d10d9 392 wait(1);
Vigilance88 39:e77f844d10d9 393 controlButtons();
Vigilance88 39:e77f844d10d9 394 break;
Vigilance88 28:743485bb51e4 395 case 'R':
Vigilance88 28:743485bb51e4 396 red=!red;
Vigilance88 28:743485bb51e4 397 pc.printf("=> Red LED triggered \n\r");
Vigilance88 28:743485bb51e4 398 break;
Vigilance88 28:743485bb51e4 399 case 'G':
Vigilance88 28:743485bb51e4 400 green=!green;
Vigilance88 28:743485bb51e4 401 pc.printf("=> Green LED triggered \n\r");
Vigilance88 28:743485bb51e4 402 break;
Vigilance88 28:743485bb51e4 403 case 'B':
Vigilance88 28:743485bb51e4 404 blue=!blue;
Vigilance88 28:743485bb51e4 405 pc.printf("=> Blue LED triggered \n\r");
Vigilance88 28:743485bb51e4 406 break;
Vigilance88 28:743485bb51e4 407 case 'q':
Vigilance88 28:743485bb51e4 408 case 'Q':
Vigilance88 28:743485bb51e4 409
Vigilance88 28:743485bb51e4 410 break;
Vigilance88 28:743485bb51e4 411 default:
Vigilance88 28:743485bb51e4 412 pc.printf("=> Invalid Input \n\r");
Vigilance88 28:743485bb51e4 413 break;
Vigilance88 28:743485bb51e4 414 } //end switch
Vigilance88 28:743485bb51e4 415 } // end if pc readable
Vigilance88 28:743485bb51e4 416
Vigilance88 28:743485bb51e4 417 } // end while loop
Vigilance88 28:743485bb51e4 418
Vigilance88 28:743485bb51e4 419
Vigilance88 28:743485bb51e4 420
Vigilance88 47:c52f9b4c90c4 421 //When end of while loop reached (user chose quit program).
Vigilance88 28:743485bb51e4 422
Vigilance88 28:743485bb51e4 423 pc.printf("\r\n------------------------------ \n\r");
Vigilance88 28:743485bb51e4 424 pc.printf("Program Offline \n\r");
Vigilance88 28:743485bb51e4 425 pc.printf("Reset to start\r\n");
Vigilance88 28:743485bb51e4 426 pc.printf("------------------------------ \n\r");
Vigilance88 28:743485bb51e4 427 }
Vigilance88 28:743485bb51e4 428 //end of main
Vigilance88 28:743485bb51e4 429
Vigilance88 28:743485bb51e4 430 /*--------------------------------------------------------------------------------------------------------------------
Vigilance88 28:743485bb51e4 431 ---- FUNCTIONS -------------------------------------------------------------------------------------------------------
Vigilance88 28:743485bb51e4 432 --------------------------------------------------------------------------------------------------------------------*/
Vigilance88 28:743485bb51e4 433
Vigilance88 47:c52f9b4c90c4 434 //Use WASD keys to change reference position, x is a and d, y is w and s.
Vigilance88 29:948b0b14f6be 435 void controlButtons()
Vigilance88 28:743485bb51e4 436 {
Vigilance88 28:743485bb51e4 437 controlMenu();
Vigilance88 28:743485bb51e4 438 char c=0;
Vigilance88 28:743485bb51e4 439 while(c != 'Q' && c != 'q') {
Vigilance88 50:54f71544964c 440 //Debugging values:
Vigilance88 50:54f71544964c 441 if(c!='q' && c!='Q'){
Vigilance88 50:54f71544964c 442 pc.printf("Reference position: %f and %f \r\n",x,y);
Vigilance88 50:54f71544964c 443 pc.printf("Current position: %f and %f \r\n",current_x,current_y);
Vigilance88 50:54f71544964c 444 pc.printf("Pos Error: %f and %f \r\n",x_error,y_error);
Vigilance88 50:54f71544964c 445 pc.printf("Current angles: %f and %f \r\n",theta1,theta2);
Vigilance88 50:54f71544964c 446 pc.printf("DLS1: %f and DLS2 %f and DLS3 %f and DLS4: %f \r\n",dls1,dls2,dls3,dls4);
Vigilance88 50:54f71544964c 447 pc.printf("Error in angles: %f and %f \r\n",q1_error,q2_error);
Vigilance88 50:54f71544964c 448 pc.printf("PID output: %f and %f \r\n",u1,u2);
Vigilance88 50:54f71544964c 449 pc.printf("----------------------------------------\r\n\n");
Vigilance88 50:54f71544964c 450 pc.printf("Buffer 1: %f \r\n",biceps_avg);
Vigilance88 50:54f71544964c 451 pc.printf("Buffer 2: %f \r\n",triceps_avg);
Vigilance88 50:54f71544964c 452 pc.printf("Buffer 3: %f \r\n",flexor_avg);
Vigilance88 50:54f71544964c 453 pc.printf("Buffer 4: %f \r\n",extens_avg);
Vigilance88 50:54f71544964c 454 wait(1);
Vigilance88 50:54f71544964c 455 }//end if
Vigilance88 27:d1814e271a95 456
Vigilance88 51:e4a0ce7ff4b8 457 if( pc.readable() ){
Vigilance88 27:d1814e271a95 458 c = pc.getc();
Vigilance88 27:d1814e271a95 459 switch (c)
Vigilance88 27:d1814e271a95 460 {
Vigilance88 38:c8ac615d0c8f 461 case 'd' :
Vigilance88 27:d1814e271a95 462 x = x + 0.01;
Vigilance88 32:76c4d7bb2022 463
Vigilance88 27:d1814e271a95 464 break;
Vigilance88 27:d1814e271a95 465
Vigilance88 38:c8ac615d0c8f 466 case 'a' :
Vigilance88 27:d1814e271a95 467 x-=0.01;
Vigilance88 32:76c4d7bb2022 468
Vigilance88 27:d1814e271a95 469 break;
Vigilance88 27:d1814e271a95 470
Vigilance88 38:c8ac615d0c8f 471 case 'w' :
Vigilance88 27:d1814e271a95 472 y+=0.01;
Vigilance88 32:76c4d7bb2022 473
Vigilance88 27:d1814e271a95 474 break;
Vigilance88 27:d1814e271a95 475
Vigilance88 27:d1814e271a95 476
Vigilance88 38:c8ac615d0c8f 477 case 's' :
Vigilance88 27:d1814e271a95 478 y-=0.01;
Vigilance88 32:76c4d7bb2022 479
Vigilance88 27:d1814e271a95 480 break;
Vigilance88 27:d1814e271a95 481
Vigilance88 27:d1814e271a95 482 case 'q' :
Vigilance88 28:743485bb51e4 483 case 'Q' :
Vigilance88 28:743485bb51e4 484 pc.printf("=> Quitting control... \r\n"); wait(1);
Vigilance88 28:743485bb51e4 485 stop_sampling();
Vigilance88 28:743485bb51e4 486 stop_control();
Vigilance88 28:743485bb51e4 487 pwm_motor1=0; pwm_motor2=0;
Vigilance88 28:743485bb51e4 488 pc.printf("Sampling and Control detached \n\r"); wait(1);
Vigilance88 28:743485bb51e4 489 pc.printf("Returning to Main Menu \r\n\n"); wait(1);
Vigilance88 28:743485bb51e4 490 mainMenu();
Vigilance88 47:c52f9b4c90c4 491
Vigilance88 27:d1814e271a95 492 break;
Vigilance88 27:d1814e271a95 493 }//end switch
Vigilance88 47:c52f9b4c90c4 494
Vigilance88 28:743485bb51e4 495 }
Vigilance88 47:c52f9b4c90c4 496 //end if pc readable
Vigilance88 51:e4a0ce7ff4b8 497
Vigilance88 50:54f71544964c 498
Vigilance88 21:d6a46315d5f5 499 }
Vigilance88 21:d6a46315d5f5 500 //end of while loop
Vigilance88 30:a9fdd3202ca2 501 }
Vigilance88 18:44905b008f44 502
Vigilance88 21:d6a46315d5f5 503 //Sample and Filter
Vigilance88 21:d6a46315d5f5 504 void sample_filter(void)
Vigilance88 18:44905b008f44 505 {
Vigilance88 32:76c4d7bb2022 506 emg_biceps = emg1.read(); //Biceps
Vigilance88 32:76c4d7bb2022 507 emg_triceps = emg2.read(); //Triceps
Vigilance88 32:76c4d7bb2022 508 emg_flexor = emg3.read(); //Flexor
Vigilance88 32:76c4d7bb2022 509 emg_extens = emg4.read(); //Extensor
Vigilance88 21:d6a46315d5f5 510
Vigilance88 21:d6a46315d5f5 511 //Filter: high-pass -> notch -> rectify -> lowpass or moving average
Vigilance88 22:1ba637601dc3 512 // Can we use same biquadFilter (eg. highpass) for other muscles or does each muscle need its own biquad?
Vigilance88 25:49ccdc98639a 513 biceps_power = highpass.step(emg_biceps); triceps_power = highpass2.step(emg_triceps); flexor_power = highpass3.step(emg_flexor); extens_power = highpass4.step(emg_extens);
Vigilance88 25:49ccdc98639a 514 biceps_power = notch1.step(biceps_power); triceps_power = notch1_2.step(triceps_power); flexor_power = notch1_3.step(flexor_power); extens_power = notch1_4.step(extens_power);
Vigilance88 25:49ccdc98639a 515 biceps_power = notch2.step(biceps_power); triceps_power = notch2_2.step(triceps_power); flexor_power = notch2_3.step(flexor_power); extens_power = notch2_4.step(extens_power);
Vigilance88 21:d6a46315d5f5 516 biceps_power = abs(biceps_power); triceps_power = abs(triceps_power); flexor_power = abs(flexor_power); extens_power = abs(extens_power);
Vigilance88 25:49ccdc98639a 517 biceps_power = lowpass.step(biceps_power); triceps_power = lowpass2.step(triceps_power); flexor_power = lowpass3.step(flexor_power); extens_power = lowpass4.step(extens_power);
Vigilance88 34:d6ec7c634763 518
Vigilance88 52:8a8c53dc8547 519 //send filtered emg to scope
Vigilance88 50:54f71544964c 520 //scope.set(0,biceps_power);
Vigilance88 50:54f71544964c 521 //scope.set(1,triceps_power);
Vigilance88 38:c8ac615d0c8f 522 //scope.set(2,flexor_power);
Vigilance88 38:c8ac615d0c8f 523 //scope.set(3,extens_power);
Vigilance88 50:54f71544964c 524 //scope.send();
Vigilance88 52:8a8c53dc8547 525
Vigilance88 52:8a8c53dc8547 526 //send normalized emg to scope
Vigilance88 52:8a8c53dc8547 527 scope.set(0,biceps);
Vigilance88 52:8a8c53dc8547 528 scope.set(1,triceps);
Vigilance88 52:8a8c53dc8547 529 scope.set(2,flexor);
Vigilance88 52:8a8c53dc8547 530 scope.set(3,extens);
Vigilance88 52:8a8c53dc8547 531 scope.send();
Vigilance88 44:145827f5b091 532
Vigilance88 18:44905b008f44 533 }
Vigilance88 18:44905b008f44 534
Vigilance88 47:c52f9b4c90c4 535 //Limit switch - if hit: set pulsecount of encoder to angle of lower mechanical limit
Vigilance88 51:e4a0ce7ff4b8 536 void shoulder()
Vigilance88 51:e4a0ce7ff4b8 537 {
Vigilance88 41:55face19e06b 538 pwm_motor1=0;
Vigilance88 32:76c4d7bb2022 539 done1 = true;
Vigilance88 32:76c4d7bb2022 540 pc.printf("Shoulder Limit hit - shutting down motor 1\r\n");
Vigilance88 36:4d4fc200171b 541 //mechanical angle limits -> pulses. If 40 degrees -> counts = floor( 40 * (4200/360) )
Vigilance88 41:55face19e06b 542 theta1_cal = floor(theta1_lower * (4200/(2*PI)));
Vigilance88 51:e4a0ce7ff4b8 543 Encoder1.setPulses(theta1_cal); //edited QEI library: added setPulses(int p)
Vigilance88 32:76c4d7bb2022 544 }
Vigilance88 32:76c4d7bb2022 545
Vigilance88 32:76c4d7bb2022 546 void elbow(){
Vigilance88 41:55face19e06b 547 pwm_motor2=0;
Vigilance88 32:76c4d7bb2022 548 done2 = true;
Vigilance88 32:76c4d7bb2022 549 pc.printf("Elbow Limit hit - shutting down motor 2\r\n");
Vigilance88 47:c52f9b4c90c4 550
Vigilance88 41:55face19e06b 551 //Mechanical limit 43 degrees -> 43*(4200/360) = 350
Vigilance88 41:55face19e06b 552 theta2_cal = floor(theta2_lower * (4200/(2*PI)));
Vigilance88 51:e4a0ce7ff4b8 553 Encoder2.setPulses(theta2_cal); //edited QEI library: added setPulses(int p)
Vigilance88 32:76c4d7bb2022 554 }
Vigilance88 47:c52f9b4c90c4 555
Vigilance88 47:c52f9b4c90c4 556 //Run motors slowly clockwise to mechanical limit. Attached to 100Hz ticker
Vigilance88 47:c52f9b4c90c4 557 void calibrate(void){
Vigilance88 47:c52f9b4c90c4 558 if(done1==false){ //if motor 1 limit has not been hit yet
Vigilance88 50:54f71544964c 559 pwm_motor1=0.3; //move upper arm slowly cw
Vigilance88 47:c52f9b4c90c4 560 pc.printf("Motor 1 running %f \r\n");
Vigilance88 47:c52f9b4c90c4 561 }
Vigilance88 47:c52f9b4c90c4 562 if(done1==true && done2==false){ //if limit motor 1 has been hit
Vigilance88 47:c52f9b4c90c4 563 pwm_motor1=0; //stop motor1
Vigilance88 50:54f71544964c 564 pwm_motor2=0.3; //start moving forearm slowly cw
Vigilance88 47:c52f9b4c90c4 565 pc.printf("Motor 2 running %f \r\n");
Vigilance88 47:c52f9b4c90c4 566 }
Vigilance88 47:c52f9b4c90c4 567 }
Vigilance88 32:76c4d7bb2022 568
Vigilance88 18:44905b008f44 569 //Send arm to mechanical limits, and set encoder to 0. Then send arm to starting position.
Vigilance88 19:0a3ee31dcdb4 570 void calibrate_arm(void)
Vigilance88 19:0a3ee31dcdb4 571 {
Vigilance88 28:743485bb51e4 572 pc.printf("Calibrate_arm() entered\r\n");
Vigilance88 47:c52f9b4c90c4 573
Vigilance88 47:c52f9b4c90c4 574 calibrating = true;
Vigilance88 32:76c4d7bb2022 575 done1 = false;
Vigilance88 32:76c4d7bb2022 576 done2 = false;
Vigilance88 32:76c4d7bb2022 577
Vigilance88 27:d1814e271a95 578 pc.printf("To start arm calibration, press any key =>");
Vigilance88 47:c52f9b4c90c4 579 pc.getc();
Vigilance88 27:d1814e271a95 580 pc.printf("\r\n Calibrating... \r\n");
Vigilance88 47:c52f9b4c90c4 581 red=0; blue=0; //Debug light is purple during arm calibration
Vigilance88 47:c52f9b4c90c4 582
Vigilance88 36:4d4fc200171b 583 dir_motor1=0; //cw
Vigilance88 36:4d4fc200171b 584 dir_motor2=1; //cw
Vigilance88 36:4d4fc200171b 585
Vigilance88 47:c52f9b4c90c4 586 control_timer.attach(&calibrate,CONTROL_RATE);
Vigilance88 26:fe3a5469dd6b 587
Vigilance88 26:fe3a5469dd6b 588 while(calibrating){
Vigilance88 47:c52f9b4c90c4 589 shoulder_limit.fall(&shoulder);
Vigilance88 47:c52f9b4c90c4 590 elbow_limit.fall(&elbow);
Vigilance88 47:c52f9b4c90c4 591 if(done1 && done2){
Vigilance88 47:c52f9b4c90c4 592 pwm_motor2=0;
Vigilance88 47:c52f9b4c90c4 593 control_timer.detach(); //Leave while loop when both limits are reached
Vigilance88 47:c52f9b4c90c4 594 red=1; blue=1; //Turn debug light off when calibration complete
Vigilance88 47:c52f9b4c90c4 595 //set reference position to mechanical limits
Vigilance88 47:c52f9b4c90c4 596 calibrating=false;
Vigilance88 27:d1814e271a95 597
Vigilance88 47:c52f9b4c90c4 598 x = l1 * cos(theta1_lower) + l2 * cos(theta1_lower + theta2_lower);
Vigilance88 47:c52f9b4c90c4 599 y = l1 * sin(theta1_lower) + l2 * sin(theta1_lower + theta2_lower);
Vigilance88 47:c52f9b4c90c4 600 //x = 0.2220;
Vigilance88 47:c52f9b4c90c4 601 //y = 0.4088;
Vigilance88 47:c52f9b4c90c4 602 }
Vigilance88 47:c52f9b4c90c4 603 }
Vigilance88 47:c52f9b4c90c4 604 pc.printf("Current pulsecount motor 1: %i, motor 2: %i \r\n",Encoder1.getPulses(),Encoder2.getPulses());
Vigilance88 47:c52f9b4c90c4 605 pc.printf("Current reference. X: %f, Y: %f \r\n",x,y);
Vigilance88 47:c52f9b4c90c4 606 wait(1);
Vigilance88 47:c52f9b4c90c4 607 pc.printf("\n\r-------------------------- \n\r");
Vigilance88 47:c52f9b4c90c4 608 pc.printf(" Arm Calibration Complete\r\n");
Vigilance88 47:c52f9b4c90c4 609 pc.printf("-------------------------- \n\r");
Vigilance88 47:c52f9b4c90c4 610
Vigilance88 19:0a3ee31dcdb4 611 }
Vigilance88 19:0a3ee31dcdb4 612
Vigilance88 21:d6a46315d5f5 613 //EMG Maximum Voluntary Contraction measurement
Vigilance88 25:49ccdc98639a 614 void emg_mvc()
Vigilance88 25:49ccdc98639a 615 {
Vigilance88 24:56db31267f10 616 if(muscle==1){
Vigilance88 24:56db31267f10 617
Vigilance88 24:56db31267f10 618 if(biceps_power>bicepsMVC){
Vigilance88 26:fe3a5469dd6b 619 //printf("+ ");
Vigilance88 26:fe3a5469dd6b 620 printf("%s+ %s",GREEN_,_GREEN);
Vigilance88 21:d6a46315d5f5 621 bicepsMVC=biceps_power;
Vigilance88 24:56db31267f10 622 }
Vigilance88 25:49ccdc98639a 623 else
Vigilance88 25:49ccdc98639a 624 printf("- ");
Vigilance88 24:56db31267f10 625 }
Vigilance88 24:56db31267f10 626
Vigilance88 24:56db31267f10 627 if(muscle==2){
Vigilance88 24:56db31267f10 628
Vigilance88 24:56db31267f10 629 if(triceps_power>tricepsMVC){
Vigilance88 26:fe3a5469dd6b 630 printf("%s+ %s",GREEN_,_GREEN);
Vigilance88 24:56db31267f10 631 tricepsMVC=triceps_power;
Vigilance88 24:56db31267f10 632 }
Vigilance88 26:fe3a5469dd6b 633 else
Vigilance88 26:fe3a5469dd6b 634 printf("- ");
Vigilance88 24:56db31267f10 635 }
Vigilance88 24:56db31267f10 636
Vigilance88 24:56db31267f10 637 if(muscle==3){
Vigilance88 24:56db31267f10 638
Vigilance88 24:56db31267f10 639 if(flexor_power>flexorMVC){
Vigilance88 26:fe3a5469dd6b 640 printf("%s+ %s",GREEN_,_GREEN);
Vigilance88 24:56db31267f10 641 flexorMVC=flexor_power;
Vigilance88 24:56db31267f10 642 }
Vigilance88 26:fe3a5469dd6b 643 else
Vigilance88 26:fe3a5469dd6b 644 printf("- ");
Vigilance88 24:56db31267f10 645 }
Vigilance88 24:56db31267f10 646
Vigilance88 24:56db31267f10 647 if(muscle==4){
Vigilance88 24:56db31267f10 648
Vigilance88 24:56db31267f10 649 if(extens_power>extensMVC){
Vigilance88 26:fe3a5469dd6b 650 printf("%s+ %s",GREEN_,_GREEN);
Vigilance88 24:56db31267f10 651 extensMVC=extens_power;
Vigilance88 24:56db31267f10 652 }
Vigilance88 26:fe3a5469dd6b 653 else
Vigilance88 26:fe3a5469dd6b 654 printf("- ");
Vigilance88 24:56db31267f10 655 }
Vigilance88 25:49ccdc98639a 656
Vigilance88 25:49ccdc98639a 657 //}
Vigilance88 25:49ccdc98639a 658 calibrate_time = calibrate_time + 0.002;
Vigilance88 36:4d4fc200171b 659
Vigilance88 25:49ccdc98639a 660 }
Vigilance88 25:49ccdc98639a 661
Vigilance88 35:7d9fca0b1545 662 void emg_min()
Vigilance88 48:a1f97eb8c020 663 {
Vigilance88 38:c8ac615d0c8f 664 if(biceps_power>bicepsmin){
Vigilance88 35:7d9fca0b1545 665 bicepsmin=biceps_power;
Vigilance88 35:7d9fca0b1545 666 }
Vigilance88 35:7d9fca0b1545 667
Vigilance88 38:c8ac615d0c8f 668 if(triceps_power>tricepsmin){
Vigilance88 35:7d9fca0b1545 669 tricepsmin=triceps_power;
Vigilance88 35:7d9fca0b1545 670 }
Vigilance88 35:7d9fca0b1545 671
Vigilance88 38:c8ac615d0c8f 672 if(flexor_power>flexormin){
Vigilance88 35:7d9fca0b1545 673 flexormin=flexor_power;
Vigilance88 35:7d9fca0b1545 674 }
Vigilance88 35:7d9fca0b1545 675
Vigilance88 38:c8ac615d0c8f 676 if(extens_power > extensmin){
Vigilance88 35:7d9fca0b1545 677 extensmin = extens_power;
Vigilance88 35:7d9fca0b1545 678 }
Vigilance88 35:7d9fca0b1545 679
Vigilance88 35:7d9fca0b1545 680 calibrate_time = calibrate_time + 0.002;
Vigilance88 35:7d9fca0b1545 681
Vigilance88 35:7d9fca0b1545 682 }
Vigilance88 35:7d9fca0b1545 683
Vigilance88 25:49ccdc98639a 684 //EMG calibration
Vigilance88 25:49ccdc98639a 685 void calibrate_emg()
Vigilance88 25:49ccdc98639a 686 {
Vigilance88 25:49ccdc98639a 687 Ticker timer;
Vigilance88 25:49ccdc98639a 688
Vigilance88 38:c8ac615d0c8f 689 pc.printf("Starting sampling, to allow hidscope to normalize\r\n");
Vigilance88 38:c8ac615d0c8f 690 start_sampling();
Vigilance88 25:49ccdc98639a 691 wait(1);
Vigilance88 48:a1f97eb8c020 692
Vigilance88 48:a1f97eb8c020 693 /******************* All muscles: minimum measurement *************************/
Vigilance88 48:a1f97eb8c020 694 pc.printf("Start of minimum measurement, relax all muscles.\r\n");
Vigilance88 35:7d9fca0b1545 695 wait(1);
Vigilance88 35:7d9fca0b1545 696 pc.printf(" Press any key to begin... "); wait(1);
Vigilance88 35:7d9fca0b1545 697 char input;
Vigilance88 35:7d9fca0b1545 698 input=pc.getc();
Vigilance88 35:7d9fca0b1545 699 pc.printf(" \r\n Starting in 3... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 700 pc.printf(" \r\n Starting in 2... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 701 pc.printf(" \r\n Starting in 1... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 702
Vigilance88 35:7d9fca0b1545 703 timer.attach(&emg_min,SAMPLE_RATE);
Vigilance88 35:7d9fca0b1545 704 wait(5);
Vigilance88 35:7d9fca0b1545 705 timer.detach();
Vigilance88 35:7d9fca0b1545 706 pc.printf("\r\n Measurement complete."); wait(1);
Vigilance88 35:7d9fca0b1545 707 pc.printf("\r\n Biceps min = %f \r\n",bicepsmin); wait(1);
Vigilance88 35:7d9fca0b1545 708 pc.printf("\r\n Triceps min = %f \r\n",tricepsmin); wait(1);
Vigilance88 35:7d9fca0b1545 709 pc.printf("\r\n Flexor min = %f \r\n",flexormin); wait(1);
Vigilance88 35:7d9fca0b1545 710 pc.printf("\r\n Extensor min = %f \r\n",extensmin); wait(1);
Vigilance88 48:a1f97eb8c020 711 /******************************** Done ****************************************/
Vigilance88 35:7d9fca0b1545 712
Vigilance88 48:a1f97eb8c020 713 pc.printf("\r\n Now we will measure maximum amplitudes \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 714 pc.printf("+ means current sample is higher than stored MVC\r\n");
Vigilance88 25:49ccdc98639a 715 pc.printf("- means current sample is lower than stored MVC\r\n");
Vigilance88 48:a1f97eb8c020 716 wait(1);
Vigilance88 48:a1f97eb8c020 717 calibrate_time=0;
Vigilance88 48:a1f97eb8c020 718
Vigilance88 48:a1f97eb8c020 719 /********************* 1st channel: MVC measurement ***************************/
Vigilance88 28:743485bb51e4 720 pc.printf("\r\n----------------\r\n ");
Vigilance88 28:743485bb51e4 721 pc.printf(" Biceps is first.\r\n ");
Vigilance88 28:743485bb51e4 722 pc.printf("----------------\r\n ");
Vigilance88 28:743485bb51e4 723 wait(1);
Vigilance88 25:49ccdc98639a 724 pc.printf(" Press any key to begin... "); wait(1);
Vigilance88 25:49ccdc98639a 725 input=pc.getc();
Vigilance88 25:49ccdc98639a 726 pc.putc(input);
Vigilance88 25:49ccdc98639a 727 pc.printf(" \r\n Starting in 3... \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 728 pc.printf(" \r\n Starting in 2... \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 729 pc.printf(" \r\n Starting in 1... \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 730
Vigilance88 25:49ccdc98639a 731 muscle=1;
Vigilance88 27:d1814e271a95 732 timer.attach(&emg_mvc,SAMPLE_RATE);
Vigilance88 25:49ccdc98639a 733 wait(5);
Vigilance88 25:49ccdc98639a 734 timer.detach();
Vigilance88 26:fe3a5469dd6b 735
Vigilance88 26:fe3a5469dd6b 736 pc.printf("\r\n Measurement complete."); wait(1);
Vigilance88 26:fe3a5469dd6b 737 pc.printf("\r\n Biceps MVC = %f \r\n",bicepsMVC); wait(1);
Vigilance88 26:fe3a5469dd6b 738 pc.printf("Calibrate_emg() exited \r\n"); wait(1);
Vigilance88 26:fe3a5469dd6b 739 pc.printf("Measured time: %f seconds \r\n\n",calibrate_time);
Vigilance88 25:49ccdc98639a 740 calibrate_time=0;
Vigilance88 48:a1f97eb8c020 741 /******************************** Done ****************************************/
Vigilance88 25:49ccdc98639a 742
Vigilance88 48:a1f97eb8c020 743 /********************* 2nd channel: MVC measurement ***************************/
Vigilance88 26:fe3a5469dd6b 744 muscle=2;
Vigilance88 28:743485bb51e4 745 pc.printf("\r\n----------------\r\n ");
Vigilance88 28:743485bb51e4 746 pc.printf(" Triceps is next.\r\n ");
Vigilance88 28:743485bb51e4 747 pc.printf("----------------\r\n ");
Vigilance88 28:743485bb51e4 748 wait(1);
Vigilance88 28:743485bb51e4 749
Vigilance88 25:49ccdc98639a 750 pc.printf(" Press any key to begin... "); wait(1);
Vigilance88 25:49ccdc98639a 751 input=pc.getc();
Vigilance88 25:49ccdc98639a 752 pc.putc(input);
Vigilance88 25:49ccdc98639a 753 pc.printf(" \r\n Starting in 3... \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 754 pc.printf(" \r\n Starting in 2... \r\n"); wait(1);
Vigilance88 25:49ccdc98639a 755 pc.printf(" \r\n Starting in 1... \r\n"); wait(1);
Vigilance88 48:a1f97eb8c020 756
Vigilance88 25:49ccdc98639a 757 timer.attach(&emg_mvc,0.002);
Vigilance88 25:49ccdc98639a 758 wait(5);
Vigilance88 25:49ccdc98639a 759 timer.detach();
Vigilance88 25:49ccdc98639a 760 pc.printf("\r\n Triceps MVC = %f \r\n",tricepsMVC);
Vigilance88 25:49ccdc98639a 761
Vigilance88 25:49ccdc98639a 762 pc.printf("Calibrate_emg() exited \r\n");
Vigilance88 25:49ccdc98639a 763 pc.printf("Measured time: %f seconds \r\n",calibrate_time);
Vigilance88 25:49ccdc98639a 764 calibrate_time=0;
Vigilance88 48:a1f97eb8c020 765 /******************************** Done ****************************************/
Vigilance88 48:a1f97eb8c020 766
Vigilance88 48:a1f97eb8c020 767 /********************* 3rd channel: MVC measurement ***************************/
Vigilance88 26:fe3a5469dd6b 768 muscle=3;
Vigilance88 35:7d9fca0b1545 769 pc.printf("\r\n----------------\r\n ");
Vigilance88 35:7d9fca0b1545 770 pc.printf(" Flexor is next.\r\n ");
Vigilance88 35:7d9fca0b1545 771 pc.printf("----------------\r\n ");
Vigilance88 35:7d9fca0b1545 772 wait(1);
Vigilance88 35:7d9fca0b1545 773
Vigilance88 35:7d9fca0b1545 774 pc.printf(" Press any key to begin... "); wait(1);
Vigilance88 35:7d9fca0b1545 775 input=pc.getc();
Vigilance88 35:7d9fca0b1545 776 pc.putc(input);
Vigilance88 35:7d9fca0b1545 777 pc.printf(" \r\n Starting in 3... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 778 pc.printf(" \r\n Starting in 2... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 779 pc.printf(" \r\n Starting in 1... \r\n"); wait(1);
Vigilance88 48:a1f97eb8c020 780
Vigilance88 35:7d9fca0b1545 781 timer.attach(&emg_mvc,0.002);
Vigilance88 35:7d9fca0b1545 782 wait(5);
Vigilance88 35:7d9fca0b1545 783 timer.detach();
Vigilance88 35:7d9fca0b1545 784 pc.printf("\r\n Flexor MVC = %f \r\n",flexorMVC);
Vigilance88 35:7d9fca0b1545 785
Vigilance88 35:7d9fca0b1545 786 pc.printf("Calibrate_emg() exited \r\n");
Vigilance88 35:7d9fca0b1545 787 pc.printf("Measured time: %f seconds \r\n",calibrate_time);
Vigilance88 35:7d9fca0b1545 788 calibrate_time=0;
Vigilance88 48:a1f97eb8c020 789 /******************************** Done ****************************************/
Vigilance88 35:7d9fca0b1545 790
Vigilance88 48:a1f97eb8c020 791 /********************* 4th channel: MVC measurement ***************************/
Vigilance88 26:fe3a5469dd6b 792 muscle=4;
Vigilance88 35:7d9fca0b1545 793 pc.printf("\r\n----------------\r\n ");
Vigilance88 35:7d9fca0b1545 794 pc.printf(" Extensor is next.\r\n ");
Vigilance88 35:7d9fca0b1545 795 pc.printf("----------------\r\n ");
Vigilance88 35:7d9fca0b1545 796 wait(1);
Vigilance88 35:7d9fca0b1545 797
Vigilance88 35:7d9fca0b1545 798 pc.printf(" Press any key to begin... "); wait(1);
Vigilance88 35:7d9fca0b1545 799 input=pc.getc();
Vigilance88 35:7d9fca0b1545 800 pc.putc(input);
Vigilance88 35:7d9fca0b1545 801 pc.printf(" \r\n Starting in 3... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 802 pc.printf(" \r\n Starting in 2... \r\n"); wait(1);
Vigilance88 35:7d9fca0b1545 803 pc.printf(" \r\n Starting in 1... \r\n"); wait(1);
Vigilance88 48:a1f97eb8c020 804
Vigilance88 35:7d9fca0b1545 805 timer.attach(&emg_mvc,0.002);
Vigilance88 35:7d9fca0b1545 806 wait(5);
Vigilance88 35:7d9fca0b1545 807 timer.detach();
Vigilance88 35:7d9fca0b1545 808 pc.printf("\r\n Extensor MVC = %f \r\n",extensMVC);
Vigilance88 25:49ccdc98639a 809
Vigilance88 35:7d9fca0b1545 810 pc.printf("Calibrate_emg() exited \r\n");
Vigilance88 35:7d9fca0b1545 811 pc.printf("Measured time: %f seconds \r\n",calibrate_time);
Vigilance88 35:7d9fca0b1545 812 calibrate_time=0;
Vigilance88 48:a1f97eb8c020 813 /******************************** Done ****************************************/
Vigilance88 48:a1f97eb8c020 814
Vigilance88 48:a1f97eb8c020 815 //Stop sampling: detach ticker
Vigilance88 25:49ccdc98639a 816 stop_sampling();
Vigilance88 24:56db31267f10 817
Vigilance88 18:44905b008f44 818 }
Vigilance88 18:44905b008f44 819
Vigilance88 18:44905b008f44 820
Vigilance88 48:a1f97eb8c020 821 //PID motor 1 - Input error and Kp, Kd, Ki, output control signal
Vigilance88 20:0ede3818e08e 822 double pid(double error, double kp, double ki, double kd,double &e_int, double &e_prev)
vsluiter 2:e314bb3b2d99 823 {
Vigilance88 20:0ede3818e08e 824 // Derivative
Vigilance88 24:56db31267f10 825 double e_der = (error-e_prev)/ CONTROL_RATE;
Vigilance88 48:a1f97eb8c020 826 e_der = derfilter1.step(e_der); //derfilter1 - seperate 7hz low-pass biquad for this PID
Vigilance88 21:d6a46315d5f5 827 e_prev = error;
Vigilance88 20:0ede3818e08e 828 // Integral
Vigilance88 24:56db31267f10 829 e_int = e_int + CONTROL_RATE * error;
Vigilance88 20:0ede3818e08e 830 // PID
Vigilance88 21:d6a46315d5f5 831 return kp*error + ki*e_int + kd * e_der;
Vigilance88 20:0ede3818e08e 832
Vigilance88 18:44905b008f44 833 }
Vigilance88 18:44905b008f44 834
Vigilance88 48:a1f97eb8c020 835 //PID for motor 2 - needed because of biquadfilter memory variables?
Vigilance88 46:c8c5c455dd51 836 double pid2(double error, double kp, double ki, double kd,double &e_int, double &e_prev)
Vigilance88 46:c8c5c455dd51 837 {
Vigilance88 46:c8c5c455dd51 838 // Derivative
Vigilance88 46:c8c5c455dd51 839 double e_der = (error-e_prev)/ CONTROL_RATE;
Vigilance88 48:a1f97eb8c020 840 e_der = derfilter2.step(e_der); //derfilter2 - seperate 7hz low-pass biquad for this PID
Vigilance88 46:c8c5c455dd51 841 e_prev = error;
Vigilance88 46:c8c5c455dd51 842 // Integral
Vigilance88 46:c8c5c455dd51 843 e_int = e_int + CONTROL_RATE * error;
Vigilance88 46:c8c5c455dd51 844 // PID
Vigilance88 46:c8c5c455dd51 845 return kp*error + ki*e_int + kd * e_der;
Vigilance88 46:c8c5c455dd51 846
Vigilance88 46:c8c5c455dd51 847 }
Vigilance88 46:c8c5c455dd51 848
Vigilance88 46:c8c5c455dd51 849
Vigilance88 20:0ede3818e08e 850 //Analyze filtered EMG, calculate reference position from EMG, compare reference position with current position,convert to angles, send error through pid(), send PWM and DIR to motors
Vigilance88 18:44905b008f44 851 void control()
Vigilance88 50:54f71544964c 852 {
Vigilance88 48:a1f97eb8c020 853
Vigilance88 48:a1f97eb8c020 854 /********************* START OF EMG REFERENCE CALCULATION ***************************/
Vigilance88 46:c8c5c455dd51 855 if(emg_control==true){
Vigilance88 50:54f71544964c 856 //TODO some idle time with static reference before EMG kicks in. or go to reference in the first 5 seconds.
Vigilance88 46:c8c5c455dd51 857 emg_control_time += CONTROL_RATE;
Vigilance88 46:c8c5c455dd51 858 //if(emg_control_time < 5){
Vigilance88 48:a1f97eb8c020 859 // x=BLA; y=BLA; starting position maybe
Vigilance88 46:c8c5c455dd51 860 //}
Vigilance88 48:a1f97eb8c020 861
Vigilance88 30:a9fdd3202ca2 862 //normalize emg to value between 0-1
Vigilance88 38:c8ac615d0c8f 863 biceps = (biceps_power - bicepsmin) / (bicepsMVC - bicepsmin);
Vigilance88 38:c8ac615d0c8f 864 triceps = (triceps_power - tricepsmin) / (tricepsMVC - tricepsmin);
Vigilance88 38:c8ac615d0c8f 865 flexor = (flexor_power - flexormin) / (flexorMVC - flexormin);
Vigilance88 38:c8ac615d0c8f 866 extens = (extens_power - extensmin) / (extensMVC - extensmin);
Vigilance88 39:e77f844d10d9 867 //make sure values stay between 0-1 over time
Vigilance88 39:e77f844d10d9 868 keep_in_range(&biceps,0,1);
Vigilance88 39:e77f844d10d9 869 keep_in_range(&triceps,0,1);
Vigilance88 39:e77f844d10d9 870 keep_in_range(&flexor,0,1);
Vigilance88 39:e77f844d10d9 871 keep_in_range(&extens,0,1);
Vigilance88 39:e77f844d10d9 872
Vigilance88 38:c8ac615d0c8f 873
Vigilance88 52:8a8c53dc8547 874 //threshold detection! buffer or two thresholds? If average of 100 samples > threshold, then muscle considered on.
Vigilance88 44:145827f5b091 875 movavg1[i]=biceps; //fill array with 100 normalized samples
Vigilance88 44:145827f5b091 876 movavg2[i]=triceps;
Vigilance88 44:145827f5b091 877 movavg3[i]=flexor;
Vigilance88 44:145827f5b091 878 movavg4[i]=extens;
Vigilance88 44:145827f5b091 879 i++;
Vigilance88 44:145827f5b091 880 if(i==window){ //if array full,set i to 0
Vigilance88 44:145827f5b091 881 i=0;
Vigilance88 44:145827f5b091 882 }
Vigilance88 44:145827f5b091 883
Vigilance88 50:54f71544964c 884
Vigilance88 50:54f71544964c 885 //Sum all values in the array. The sum needs to be overwritten or it will continue to sum the next 100 samples on top it
Vigilance88 50:54f71544964c 886 //and will grow out of control.
Vigilance88 50:54f71544964c 887 //So the variable name for the sum in the for loop is not really correct since the average is calculated after the loop.
Vigilance88 50:54f71544964c 888 for(int j = 0; j < window; j++){
Vigilance88 50:54f71544964c 889 biceps_avg += movavg1[j];
Vigilance88 50:54f71544964c 890 triceps_avg += movavg2[j];
Vigilance88 50:54f71544964c 891 flexor_avg += movavg3[j];
Vigilance88 50:54f71544964c 892 extens_avg += movavg4[j];
Vigilance88 44:145827f5b091 893 }
Vigilance88 50:54f71544964c 894 biceps_avg = biceps_avg/window; //divide sum by number of samples -> average
Vigilance88 50:54f71544964c 895 triceps_avg = triceps_avg/window;
Vigilance88 50:54f71544964c 896 flexor_avg = flexor_avg/window;
Vigilance88 50:54f71544964c 897 extens_avg = extens_avg/window;
Vigilance88 46:c8c5c455dd51 898
Vigilance88 50:54f71544964c 899
Vigilance88 48:a1f97eb8c020 900
Vigilance88 48:a1f97eb8c020 901 //Compare muscle amplitudes and determine their influence on x and y reference position.
Vigilance88 39:e77f844d10d9 902 if (biceps>triceps && biceps > 0.2){
Vigilance88 48:a1f97eb8c020 903 xdir = 0;
Vigilance88 39:e77f844d10d9 904 xpower = biceps;}
Vigilance88 39:e77f844d10d9 905 else if (triceps>biceps && triceps>0.2){
Vigilance88 30:a9fdd3202ca2 906 xdir = 1;
Vigilance88 39:e77f844d10d9 907 xpower = triceps;}
Vigilance88 30:a9fdd3202ca2 908 else
Vigilance88 30:a9fdd3202ca2 909 xpower=0;
Vigilance88 30:a9fdd3202ca2 910
Vigilance88 39:e77f844d10d9 911 if (flexor>extens && flexor > 0.2){
Vigilance88 30:a9fdd3202ca2 912 ydir = 0;
Vigilance88 30:a9fdd3202ca2 913 ypower = flexor;
Vigilance88 30:a9fdd3202ca2 914 }
Vigilance88 39:e77f844d10d9 915 else if (extens>flexor && extens > 0.2){
Vigilance88 30:a9fdd3202ca2 916 ydir = 1;
Vigilance88 39:e77f844d10d9 917 ypower = extens;
Vigilance88 30:a9fdd3202ca2 918 }
Vigilance88 30:a9fdd3202ca2 919 else
Vigilance88 30:a9fdd3202ca2 920 ypower = 0;
Vigilance88 30:a9fdd3202ca2 921
Vigilance88 38:c8ac615d0c8f 922 //power: the longer a signal is active, the further the reference goes. So integrate to determine reference position
Vigilance88 48:a1f97eb8c020 923 dx = xpower * CONTROL_RATE * 0.1; //last value is a factor to control how fast the reference (so also end effector) changes
Vigilance88 39:e77f844d10d9 924 dy = ypower * CONTROL_RATE * 0.1;
Vigilance88 18:44905b008f44 925
Vigilance88 48:a1f97eb8c020 926 //Direction! Sum dx and dy but make sure xdir and ydir are considered.
Vigilance88 48:a1f97eb8c020 927 if (xdir>0) //if x direction of sample is positive, add it to reference position
Vigilance88 48:a1f97eb8c020 928 x += dx;
Vigilance88 48:a1f97eb8c020 929 else //if x direction of sample is negative, substract it from reference position
Vigilance88 30:a9fdd3202ca2 930 x += -dx;
Vigilance88 30:a9fdd3202ca2 931
Vigilance88 48:a1f97eb8c020 932 if (ydir>0) //if y direction of sample is positive, add it to reference position
Vigilance88 30:a9fdd3202ca2 933 y += dy;
Vigilance88 30:a9fdd3202ca2 934 else
Vigilance88 48:a1f97eb8c020 935 y += -dy; //if y direction of sample is negative, substract it from reference position
Vigilance88 48:a1f97eb8c020 936
Vigilance88 48:a1f97eb8c020 937 //now we have x and y -> reference position.
Vigilance88 30:a9fdd3202ca2 938
Vigilance88 39:e77f844d10d9 939 }//end emg_control if
Vigilance88 48:a1f97eb8c020 940 /******************************** END OF EMG REFERENCE CALCULATION ****************************************/
Vigilance88 48:a1f97eb8c020 941
Vigilance88 30:a9fdd3202ca2 942
Vigilance88 27:d1814e271a95 943 //Current position - Encoder counts -> current angle -> Forward Kinematics
Vigilance88 49:6515c045cfd6 944 rpc=(2*PI)/ENCODER_CPR; //radians per count (resolution) - 2pi divided by 4200
Vigilance88 48:a1f97eb8c020 945 theta1 = Encoder1.getPulses() * rpc; //multiply resolution with number of counts to get current angles
Vigilance88 27:d1814e271a95 946 theta2 = Encoder2.getPulses() * rpc;
Vigilance88 48:a1f97eb8c020 947 current_x = l1 * cos(theta1) + l2 * cos(theta1 + theta2); //Forward kinematics for current position
Vigilance88 27:d1814e271a95 948 current_y = l1 * sin(theta1) + l2 * sin(theta1 + theta2);
Vigilance88 27:d1814e271a95 949
Vigilance88 27:d1814e271a95 950
Vigilance88 48:a1f97eb8c020 951 //calculate error (refpos-currentpos)
Vigilance88 27:d1814e271a95 952 x_error = x - current_x;
Vigilance88 27:d1814e271a95 953 y_error = y - current_y;
Vigilance88 27:d1814e271a95 954
Vigilance88 48:a1f97eb8c020 955 /******************************** START OF TRIG INVERSE KINEMATICS ****************************************/
Vigilance88 38:c8ac615d0c8f 956 if (control_method==1){
Vigilance88 27:d1814e271a95 957 //inverse kinematics (refpos to refangle)
Vigilance88 18:44905b008f44 958
Vigilance88 27:d1814e271a95 959 costheta2 = (pow(x,2) + pow(y,2) - pow(l1,2) - pow(l2,2)) / (2*l1*l2) ;
Vigilance88 50:54f71544964c 960 //absolute in sqrt to avoid imaginary numbers -> bigger steady state error when reference out of workspace
Vigilance88 50:54f71544964c 961 sintheta2 = sqrt( abs( 1 - pow(costheta2,2) ) );
Vigilance88 27:d1814e271a95 962
Vigilance88 48:a1f97eb8c020 963 //Reference angle 2
Vigilance88 27:d1814e271a95 964 dtheta2 = atan2(sintheta2,costheta2);
Vigilance88 27:d1814e271a95 965
Vigilance88 32:76c4d7bb2022 966 double k1 = l1 + l2*costheta2;
Vigilance88 32:76c4d7bb2022 967 double k2 = l2*sintheta2;
Vigilance88 32:76c4d7bb2022 968
Vigilance88 48:a1f97eb8c020 969 //Reference angle 1
Vigilance88 32:76c4d7bb2022 970 dtheta1 = atan2(y, x) - atan2(k2, k1);
Vigilance88 32:76c4d7bb2022 971
Vigilance88 32:76c4d7bb2022 972 /* alternative:
Vigilance88 27:d1814e271a95 973 costheta1 = ( x * (l1 + l2 * costheta2) + y * l2 * sintheta2 ) / ( pow(x,2) + pow(y,2) );
Vigilance88 30:a9fdd3202ca2 974 sintheta1 = sqrt( abs( 1 - pow(costheta1,2) ) );
Vigilance88 27:d1814e271a95 975
Vigilance88 27:d1814e271a95 976 dtheta1 = atan2(sintheta1,costheta1);
Vigilance88 32:76c4d7bb2022 977 */
Vigilance88 27:d1814e271a95 978
Vigilance88 27:d1814e271a95 979 //Angle error
Vigilance88 27:d1814e271a95 980 m1_error = dtheta1-theta1;
Vigilance88 27:d1814e271a95 981 m2_error = dtheta2-theta2;
Vigilance88 39:e77f844d10d9 982 }// end control method 1
Vigilance88 48:a1f97eb8c020 983 /******************************** END OF TRIG INVERSE KINEMATICS ****************************************/
Vigilance88 27:d1814e271a95 984
Vigilance88 48:a1f97eb8c020 985
Vigilance88 48:a1f97eb8c020 986 /******************************** START OF DLS INVERSE KINEMATICS ****************************************/
Vigilance88 38:c8ac615d0c8f 987 if(control_method==2){
Vigilance88 37:4d7b7ced20ef 988 //inverse kinematics (error in position to error in angles)
Vigilance88 37:4d7b7ced20ef 989 dls1= -(l2*pow(lambda,2)*sin(theta1 + theta2) + l1*pow(lambda,2)*sin(theta1) + l1*pow(l2,2)*pow(cos(theta1 + theta2),2)*sin(theta1) - l1*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1))/(pow(lambda,4) + 2*pow(l2,2)*pow(lambda,2)*pow(cos(theta1 + theta2),2) + 2*pow(l2,2)*pow(lambda,2)*pow(sin(theta1 + theta2),2) + pow(l1,2)*pow(lambda,2)*pow(cos(theta1),2) + pow(l1,2)*pow(lambda,2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(cos(theta1 + theta2),2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(sin(theta1 + theta2),2)*pow(cos(theta1),2) + 2*l1*l2*pow(lambda,2)*cos(theta1 + theta2)*cos(theta1) + 2*l1*l2*pow(lambda,2)*sin(theta1 + theta2)*sin(theta1) - 2*pow(l1,2)*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1)*sin(theta1));
Vigilance88 37:4d7b7ced20ef 990 dls2= (l2*pow(lambda,2)*cos(theta1 + theta2) + l1*pow(lambda,2)*cos(theta1) + l1*pow(l2,2)*pow(sin(theta1 + theta2),2)*cos(theta1) - l1*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*sin(theta1))/(pow(lambda,4) + 2*pow(l2,2)*pow(lambda,2)*pow(cos(theta1 + theta2),2) + 2*pow(l2,2)*pow(lambda,2)*pow(sin(theta1 + theta2),2) + pow(l1,2)*pow(lambda,2)*pow(cos(theta1),2) + pow(l1,2)*pow(lambda,2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(cos(theta1 + theta2),2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(sin(theta1 + theta2),2)*pow(cos(theta1),2) + 2*l1*l2*pow(lambda,2)*cos(theta1 + theta2)*cos(theta1) + 2*l1*l2*pow(lambda,2)*sin(theta1 + theta2)*sin(theta1) - 2*pow(l1,2)*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1)*sin(theta1));
Vigilance88 37:4d7b7ced20ef 991 dls3= -(l2*pow(lambda,2)*sin(theta1 + theta2) - l1*pow(l2,2)*pow(cos(theta1 + theta2),2)*sin(theta1) + pow(l1,2)*l2*sin(theta1 + theta2)*pow(cos(theta1),2) - pow(l1,2)*l2*cos(theta1 + theta2)*cos(theta1)*sin(theta1) + l1*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1))/(pow(lambda,4) + 2*pow(l2,2)*pow(lambda,2)*pow(cos(theta1 + theta2),2) + 2*pow(l2,2)*pow(lambda,2)*pow(sin(theta1 + theta2),2) + pow(l1,2)*pow(lambda,2)*pow(cos(theta1),2) + pow(l1,2)*pow(lambda,2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(cos(theta1 + theta2),2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(sin(theta1 + theta2),2)*pow(cos(theta1),2) + 2*l1*l2*pow(lambda,2)*cos(theta1 + theta2)*cos(theta1) + 2*l1*l2*pow(lambda,2)*sin(theta1 + theta2)*sin(theta1) - 2*pow(l1,2)*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1)*sin(theta1));
Vigilance88 37:4d7b7ced20ef 992 dls4= (l2*pow(lambda,2)*cos(theta1 + theta2) - l1*pow(l2,2)*pow(sin(theta1 + theta2),2)*cos(theta1) + pow(l1,2)*l2*cos(theta1 + theta2)*pow(sin(theta1),2) - pow(l1,2)*l2*sin(theta1 + theta2)*cos(theta1)*sin(theta1) + l1*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*sin(theta1))/(pow(lambda,4) + 2*pow(l2,2)*pow(lambda,2)*pow(cos(theta1 + theta2),2) + 2*pow(l2,2)*pow(lambda,2)*pow(sin(theta1 + theta2),2) + pow(l1,2)*pow(lambda,2)*pow(cos(theta1),2) + pow(l1,2)*pow(lambda,2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(cos(theta1 + theta2),2)*pow(sin(theta1),2) + pow(l1,2)*pow(l2,2)*pow(sin(theta1 + theta2),2)*pow(cos(theta1),2) + 2*l1*l2*pow(lambda,2)*cos(theta1 + theta2)*cos(theta1) + 2*l1*l2*pow(lambda,2)*sin(theta1 + theta2)*sin(theta1) - 2*pow(l1,2)*pow(l2,2)*cos(theta1 + theta2)*sin(theta1 + theta2)*cos(theta1)*sin(theta1));
Vigilance88 37:4d7b7ced20ef 993
Vigilance88 37:4d7b7ced20ef 994 q1_error = dls1 * x_error + dls2 * y_error;
Vigilance88 37:4d7b7ced20ef 995 q2_error = dls3 * x_error + dls4 * y_error;
Vigilance88 37:4d7b7ced20ef 996
Vigilance88 37:4d7b7ced20ef 997 //Angle error
Vigilance88 37:4d7b7ced20ef 998 m1_error = q1_error;
Vigilance88 37:4d7b7ced20ef 999 m2_error = q2_error;
Vigilance88 39:e77f844d10d9 1000 }//end control method 2
Vigilance88 48:a1f97eb8c020 1001 /******************************** END OF DLS INVERSE KINEMATICS ****************************************/
Vigilance88 39:e77f844d10d9 1002
Vigilance88 48:a1f97eb8c020 1003
Vigilance88 48:a1f97eb8c020 1004 /* Set limits to the error!
Vigilance88 48:a1f97eb8c020 1005 motor1: lower limit 40 degrees, upper limit 135
Vigilance88 48:a1f97eb8c020 1006 motor2: lower 43 degrees, upper limit 138 degrees. */
Vigilance88 41:55face19e06b 1007
Vigilance88 48:a1f97eb8c020 1008 //lower limits: Negative error not allowed to go further. NEEDS MORE TESTING
Vigilance88 41:55face19e06b 1009 if (theta1 < theta1_lower){
Vigilance88 41:55face19e06b 1010 if (m1_error > 0)
Vigilance88 41:55face19e06b 1011 m1_error = m1_error;
Vigilance88 39:e77f844d10d9 1012 else
Vigilance88 41:55face19e06b 1013 m1_error = 0; }
Vigilance88 41:55face19e06b 1014 if (theta2 < theta2_lower){
Vigilance88 41:55face19e06b 1015 if (m2_error > 0)
Vigilance88 41:55face19e06b 1016 m2_error = m2_error;
Vigilance88 41:55face19e06b 1017 else
Vigilance88 41:55face19e06b 1018 m2_error = 0;
Vigilance88 41:55face19e06b 1019 }
Vigilance88 39:e77f844d10d9 1020 //upper limit: Positive error not allowed to go further
Vigilance88 41:55face19e06b 1021 if (theta1 > theta1_upper){
Vigilance88 41:55face19e06b 1022 if (m1_error < 0 )
Vigilance88 41:55face19e06b 1023 m1_error = m1_error;
Vigilance88 39:e77f844d10d9 1024 else
Vigilance88 41:55face19e06b 1025 m1_error = 0;
Vigilance88 41:55face19e06b 1026 }
Vigilance88 41:55face19e06b 1027 if (theta2 > theta2_upper){
Vigilance88 41:55face19e06b 1028 if (m2_error < 0 )
Vigilance88 41:55face19e06b 1029 m2_error = m2_error;
Vigilance88 41:55face19e06b 1030 else
Vigilance88 41:55face19e06b 1031 m2_error = 0;
Vigilance88 41:55face19e06b 1032 }
Vigilance88 39:e77f844d10d9 1033
Vigilance88 18:44905b008f44 1034 //PID controller
Vigilance88 24:56db31267f10 1035 u1=pid(m1_error,m1_kp,m1_ki,m1_kd,m1_e_int,m1_e_prev); //motor 1
Vigilance88 46:c8c5c455dd51 1036 u2=pid2(m2_error,m2_kp,m2_ki,m2_kd,m2_e_int,m2_e_prev); //motor 2
Vigilance88 21:d6a46315d5f5 1037
Vigilance88 48:a1f97eb8c020 1038 //keep u between limits, sign = direction, PWM = 0-1
Vigilance88 48:a1f97eb8c020 1039 keep_in_range(&u1,-0.6,0.6);
Vigilance88 27:d1814e271a95 1040 keep_in_range(&u2,-0.6,0.6);
Vigilance88 21:d6a46315d5f5 1041
Vigilance88 21:d6a46315d5f5 1042 //send PWM and DIR to motor 1
Vigilance88 21:d6a46315d5f5 1043 dir_motor1 = u1>0 ? 1 : 0; //conditional statement dir_motor1 = [condition] ? [if met 1] : [else 0]], same as if else below.
Vigilance88 21:d6a46315d5f5 1044 pwm_motor1.write(abs(u1));
Vigilance88 21:d6a46315d5f5 1045
Vigilance88 21:d6a46315d5f5 1046 //send PWM and DIR to motor 2
Vigilance88 27:d1814e271a95 1047 dir_motor2 = u2>0 ? 0 : 1; //conditional statement, same as if else below
Vigilance88 25:49ccdc98639a 1048 pwm_motor2.write(abs(u2));
Vigilance88 21:d6a46315d5f5 1049
Vigilance88 21:d6a46315d5f5 1050 /*if(u1 > 0)
Vigilance88 21:d6a46315d5f5 1051 {
Vigilance88 21:d6a46315d5f5 1052 dir_motor1 = 0;
Vigilance88 21:d6a46315d5f5 1053 else{
Vigilance88 21:d6a46315d5f5 1054 dir_motor1 = 1;
Vigilance88 21:d6a46315d5f5 1055 }
Vigilance88 21:d6a46315d5f5 1056 }
Vigilance88 21:d6a46315d5f5 1057 pwm_motor1.write(abs(u1));
Vigilance88 21:d6a46315d5f5 1058
Vigilance88 21:d6a46315d5f5 1059
Vigilance88 21:d6a46315d5f5 1060 if(u2 > 0)
Vigilance88 21:d6a46315d5f5 1061 {
Vigilance88 21:d6a46315d5f5 1062 dir_motor1 = 1;
Vigilance88 21:d6a46315d5f5 1063 else{
Vigilance88 21:d6a46315d5f5 1064 dir_motor1 = 0;
Vigilance88 21:d6a46315d5f5 1065 }
Vigilance88 21:d6a46315d5f5 1066 }
Vigilance88 21:d6a46315d5f5 1067 pwm_motor1.write(abs(u2));*/
Vigilance88 21:d6a46315d5f5 1068
Vigilance88 18:44905b008f44 1069 }
Vigilance88 18:44905b008f44 1070
Vigilance88 38:c8ac615d0c8f 1071
Vigilance88 26:fe3a5469dd6b 1072 void mainMenu()
Vigilance88 26:fe3a5469dd6b 1073 {
Vigilance88 38:c8ac615d0c8f 1074 //Title Box
Vigilance88 26:fe3a5469dd6b 1075 pc.putc(201);
Vigilance88 26:fe3a5469dd6b 1076 for(int j=0;j<33;j++){
Vigilance88 26:fe3a5469dd6b 1077 pc.putc(205);
Vigilance88 26:fe3a5469dd6b 1078 }
Vigilance88 26:fe3a5469dd6b 1079 pc.putc(187);
Vigilance88 26:fe3a5469dd6b 1080 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1081 pc.putc(186); pc.printf(" Main Menu "); pc.putc(186);
Vigilance88 26:fe3a5469dd6b 1082 pc.printf("\n\r");
Vigilance88 26:fe3a5469dd6b 1083 pc.putc(200);
Vigilance88 26:fe3a5469dd6b 1084 for(int k=0;k<33;k++){
Vigilance88 26:fe3a5469dd6b 1085 pc.putc(205);
Vigilance88 26:fe3a5469dd6b 1086 }
Vigilance88 26:fe3a5469dd6b 1087 pc.putc(188);
Vigilance88 26:fe3a5469dd6b 1088
Vigilance88 26:fe3a5469dd6b 1089 pc.printf("\n\r");
Vigilance88 26:fe3a5469dd6b 1090 //endbox
Vigilance88 48:a1f97eb8c020 1091
Vigilance88 28:743485bb51e4 1092 wait(1);
Vigilance88 28:743485bb51e4 1093 pc.printf("[C]alibration\r\n"); wait(0.2);
Vigilance88 40:d62f96ed44c0 1094 pc.printf("[T]RIG Control with WASD\r\n"); wait(0.2);
Vigilance88 40:d62f96ed44c0 1095 pc.printf("[D]LS Control with WASD\r\n"); wait(0.2);
Vigilance88 40:d62f96ed44c0 1096 pc.printf("[E]MG Control - DLS \r\n"); wait(0.2);
Vigilance88 28:743485bb51e4 1097 pc.printf("[Q]uit Robot Program\r\n"); wait(0.2);
Vigilance88 28:743485bb51e4 1098 pc.printf("[R]ed LED\r\n"); wait(0.2);
Vigilance88 28:743485bb51e4 1099 pc.printf("[G]reen LED\r\n"); wait(0.2);
Vigilance88 28:743485bb51e4 1100 pc.printf("[B]lue LED\r\n"); wait(0.2);
Vigilance88 28:743485bb51e4 1101 pc.printf("Please make a choice => \r\n");
Vigilance88 26:fe3a5469dd6b 1102 }
Vigilance88 24:56db31267f10 1103
Vigilance88 24:56db31267f10 1104 //Start sampling
Vigilance88 24:56db31267f10 1105 void start_sampling(void)
Vigilance88 24:56db31267f10 1106 {
Vigilance88 24:56db31267f10 1107 sample_timer.attach(&sample_filter,SAMPLE_RATE); //500 Hz EMG
Vigilance88 26:fe3a5469dd6b 1108
Vigilance88 26:fe3a5469dd6b 1109 //Debug LED will be green when sampling is active
Vigilance88 26:fe3a5469dd6b 1110 green=0;
Vigilance88 25:49ccdc98639a 1111 pc.printf("||- started sampling -|| \r\n");
Vigilance88 24:56db31267f10 1112 }
Vigilance88 24:56db31267f10 1113
Vigilance88 24:56db31267f10 1114 //stop sampling
Vigilance88 24:56db31267f10 1115 void stop_sampling(void)
Vigilance88 24:56db31267f10 1116 {
Vigilance88 24:56db31267f10 1117 sample_timer.detach();
Vigilance88 26:fe3a5469dd6b 1118
Vigilance88 26:fe3a5469dd6b 1119 //Debug LED will be turned off when sampling stops
Vigilance88 26:fe3a5469dd6b 1120 green=1;
Vigilance88 25:49ccdc98639a 1121 pc.printf("||- stopped sampling -|| \r\n");
Vigilance88 24:56db31267f10 1122 }
Vigilance88 24:56db31267f10 1123
Vigilance88 18:44905b008f44 1124 //Start control
Vigilance88 18:44905b008f44 1125 void start_control(void)
Vigilance88 18:44905b008f44 1126 {
Vigilance88 35:7d9fca0b1545 1127 control_timer.attach(&control,CONTROL_RATE); //100 Hz control
Vigilance88 35:7d9fca0b1545 1128
Vigilance88 35:7d9fca0b1545 1129 //Debug LED will be blue when control is on. If sampling and control are on -> blue + green = cyan.
Vigilance88 35:7d9fca0b1545 1130 blue=0;
Vigilance88 35:7d9fca0b1545 1131 pc.printf("||- started control -|| \r\n");
Vigilance88 35:7d9fca0b1545 1132 }
Vigilance88 35:7d9fca0b1545 1133
Vigilance88 18:44905b008f44 1134 //stop control
Vigilance88 18:44905b008f44 1135 void stop_control(void)
Vigilance88 18:44905b008f44 1136 {
Vigilance88 18:44905b008f44 1137 control_timer.detach();
Vigilance88 26:fe3a5469dd6b 1138
Vigilance88 26:fe3a5469dd6b 1139 //Debug LED will be off when control is off
Vigilance88 26:fe3a5469dd6b 1140 blue=1;
Vigilance88 26:fe3a5469dd6b 1141 pc.printf("||- stopped control -|| \r\n");
vsluiter 2:e314bb3b2d99 1142 }
vsluiter 0:32bb76391d89 1143
Vigilance88 21:d6a46315d5f5 1144
Vigilance88 26:fe3a5469dd6b 1145 //Clears the putty (or other terminal) window
Vigilance88 26:fe3a5469dd6b 1146 void clearTerminal()
Vigilance88 26:fe3a5469dd6b 1147 {
Vigilance88 26:fe3a5469dd6b 1148 pc.putc(27);
Vigilance88 26:fe3a5469dd6b 1149 pc.printf("[2J"); // clear screen
Vigilance88 26:fe3a5469dd6b 1150 pc.putc(27); // ESC
Vigilance88 26:fe3a5469dd6b 1151 pc.printf("[H"); // cursor to home
Vigilance88 26:fe3a5469dd6b 1152 }
Vigilance88 21:d6a46315d5f5 1153
Vigilance88 30:a9fdd3202ca2 1154
Vigilance88 30:a9fdd3202ca2 1155 void controlMenu()
Vigilance88 30:a9fdd3202ca2 1156 {
Vigilance88 48:a1f97eb8c020 1157 //Title Box
Vigilance88 30:a9fdd3202ca2 1158 pc.putc(201);
Vigilance88 30:a9fdd3202ca2 1159 for(int j=0;j<33;j++){
Vigilance88 30:a9fdd3202ca2 1160 pc.putc(205);
Vigilance88 30:a9fdd3202ca2 1161 }
Vigilance88 30:a9fdd3202ca2 1162 pc.putc(187);
Vigilance88 30:a9fdd3202ca2 1163 pc.printf("\n\r");
Vigilance88 30:a9fdd3202ca2 1164 pc.putc(186); pc.printf(" Control Menu "); pc.putc(186);
Vigilance88 30:a9fdd3202ca2 1165 pc.printf("\n\r");
Vigilance88 30:a9fdd3202ca2 1166 pc.putc(200);
Vigilance88 30:a9fdd3202ca2 1167 for(int k=0;k<33;k++){
Vigilance88 30:a9fdd3202ca2 1168 pc.putc(205);
Vigilance88 30:a9fdd3202ca2 1169 }
Vigilance88 30:a9fdd3202ca2 1170 pc.putc(188);
Vigilance88 30:a9fdd3202ca2 1171
Vigilance88 30:a9fdd3202ca2 1172 pc.printf("\n\r");
Vigilance88 30:a9fdd3202ca2 1173 //endbox
Vigilance88 48:a1f97eb8c020 1174
Vigilance88 38:c8ac615d0c8f 1175 pc.printf("A) Move Arm Left\r\n");
Vigilance88 38:c8ac615d0c8f 1176 pc.printf("D) Move Arm Right\r\n");
Vigilance88 38:c8ac615d0c8f 1177 pc.printf("W) Move Arm Up\r\n");
Vigilance88 38:c8ac615d0c8f 1178 pc.printf("S) Move Arm Down\r\n");
Vigilance88 30:a9fdd3202ca2 1179 pc.printf("q) Exit \r\n");
Vigilance88 30:a9fdd3202ca2 1180 pc.printf("Please make a choice => \r\n");
Vigilance88 30:a9fdd3202ca2 1181 }
Vigilance88 30:a9fdd3202ca2 1182
Vigilance88 28:743485bb51e4 1183 void caliMenu(){
Vigilance88 28:743485bb51e4 1184
Vigilance88 48:a1f97eb8c020 1185 //Title Box
Vigilance88 28:743485bb51e4 1186 pc.putc(201);
Vigilance88 28:743485bb51e4 1187 for(int j=0;j<33;j++){
Vigilance88 28:743485bb51e4 1188 pc.putc(205);
Vigilance88 28:743485bb51e4 1189 }
Vigilance88 28:743485bb51e4 1190 pc.putc(187);
Vigilance88 28:743485bb51e4 1191 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1192 pc.putc(186); pc.printf(" Calibration Menu "); pc.putc(186);
Vigilance88 28:743485bb51e4 1193 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1194 pc.putc(200);
Vigilance88 28:743485bb51e4 1195 for(int k=0;k<33;k++){
Vigilance88 28:743485bb51e4 1196 pc.putc(205);
Vigilance88 28:743485bb51e4 1197 }
Vigilance88 28:743485bb51e4 1198 pc.putc(188);
Vigilance88 28:743485bb51e4 1199
Vigilance88 28:743485bb51e4 1200 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1201 //endbox
Vigilance88 28:743485bb51e4 1202
Vigilance88 28:743485bb51e4 1203 pc.printf("[A]rm Calibration\r\n");
Vigilance88 28:743485bb51e4 1204 pc.printf("[E]MG Calibration\r\n");
Vigilance88 28:743485bb51e4 1205 pc.printf("[B]ack to main menu\r\n");
Vigilance88 28:743485bb51e4 1206 pc.printf("Please make a choice => \r\n");
Vigilance88 28:743485bb51e4 1207
Vigilance88 28:743485bb51e4 1208 }
Vigilance88 28:743485bb51e4 1209
Vigilance88 28:743485bb51e4 1210 void titleBox(){
Vigilance88 28:743485bb51e4 1211
Vigilance88 28:743485bb51e4 1212 //Title Box
Vigilance88 28:743485bb51e4 1213 pc.putc(201);
Vigilance88 28:743485bb51e4 1214 for(int j=0;j<33;j++){
Vigilance88 28:743485bb51e4 1215 pc.putc(205);
Vigilance88 28:743485bb51e4 1216 }
Vigilance88 28:743485bb51e4 1217 pc.putc(187);
Vigilance88 28:743485bb51e4 1218 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1219 pc.putc(186); pc.printf(" BioRobotics M9 - Group 14 "); pc.putc(186);
Vigilance88 28:743485bb51e4 1220 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1221 pc.putc(186); pc.printf(" Robot powered ON "); pc.putc(186);
Vigilance88 28:743485bb51e4 1222 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1223 pc.putc(200);
Vigilance88 28:743485bb51e4 1224 for(int k=0;k<33;k++){
Vigilance88 28:743485bb51e4 1225 pc.putc(205);
Vigilance88 28:743485bb51e4 1226 }
Vigilance88 28:743485bb51e4 1227 pc.putc(188);
Vigilance88 28:743485bb51e4 1228
Vigilance88 28:743485bb51e4 1229 pc.printf("\n\r");
Vigilance88 28:743485bb51e4 1230 //endbox
Vigilance88 28:743485bb51e4 1231 }
Vigilance88 28:743485bb51e4 1232
Vigilance88 28:743485bb51e4 1233 void emgInstructions(){
Vigilance88 36:4d4fc200171b 1234 pc.printf("\r\nPrepare the skin before applying electrodes: \n\r");
Vigilance88 28:743485bb51e4 1235 pc.printf("-> Shave electrode locations if needed and clean with alcohol \n\r"); wait(1);
Vigilance88 38:c8ac615d0c8f 1236 pc.printf("\r\n Check whether EMG signal looks normal. \n\r "); wait(1);
Vigilance88 38:c8ac615d0c8f 1237 pc.printf("\r\n To calibrate the EMG signals we will measure: \n\r ");
Vigilance88 38:c8ac615d0c8f 1238 pc.printf("- Minimum amplitude, while relaxing all muscles. \n\r ");
Vigilance88 48:a1f97eb8c020 1239 pc.printf("- Maximum Voluntary Contraction of each muscle. \n\r"); wait(1);
Vigilance88 48:a1f97eb8c020 1240 pc.printf("\r\nFor the MVC you need to flex the mentioned muscle as much as possible for 5 seconds \n\r"); wait(0.5);
Vigilance88 48:a1f97eb8c020 1241 pc.printf("The measurements will begin once you confirm you're ready [Hit any key] \n\r \n\r"); wait(0.5);
Vigilance88 28:743485bb51e4 1242 }
Vigilance88 28:743485bb51e4 1243
Vigilance88 21:d6a46315d5f5 1244 //keeps input limited between min max
Vigilance88 24:56db31267f10 1245 void keep_in_range(double * in, double min, double max)
Vigilance88 18:44905b008f44 1246 {
Vigilance88 18:44905b008f44 1247 *in > min ? *in < max? : *in = max: *in = min;
vsluiter 0:32bb76391d89 1248 }