merged EMG and PID codes
Dependencies: FastPWM HIDScope MODSERIAL QEI biquadFilter mbed
main.cpp@3:511a14a12629, 2016-10-27 (annotated)
- Committer:
- RiP
- Date:
- Thu Oct 27 08:43:37 2016 +0000
- Revision:
- 3:511a14a12629
- Parent:
- 2:625837aa7a56
merged EMG and Motor Control(PID)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mefix | 0:d02f4c7e8906 | 1 | #include "mbed.h" |
mefix | 0:d02f4c7e8906 | 2 | #include "FastPWM.h" |
mefix | 0:d02f4c7e8906 | 3 | #include "MODSERIAL.h" |
mefix | 0:d02f4c7e8906 | 4 | #include "QEI.h" |
RiP | 3:511a14a12629 | 5 | #include "HIDScope.h" //make sure hidscope cable is also attached |
RiP | 3:511a14a12629 | 6 | #include "BiQuad.h" |
mefix | 0:d02f4c7e8906 | 7 | |
RiP | 3:511a14a12629 | 8 | MODSERIAL pc(USBTX,USBRX); |
RiP | 3:511a14a12629 | 9 | HIDScope scope(3); // the amount of scopes to send to the computer |
mefix | 0:d02f4c7e8906 | 10 | |
RiP | 3:511a14a12629 | 11 | // in gebruik: D(0,1,4,5,6,7,8,10,11,12,13) A(0,1,2) |
mefix | 0:d02f4c7e8906 | 12 | |
RiP | 3:511a14a12629 | 13 | //Define the button interrupt for the calibration |
RiP | 3:511a14a12629 | 14 | InterruptIn button_calibrate(PTA4); |
mefix | 0:d02f4c7e8906 | 15 | |
RiP | 3:511a14a12629 | 16 | AnalogIn emg1( A0 ); // first emg input |
RiP | 3:511a14a12629 | 17 | AnalogIn emg2( A1 ); // second emg input |
RiP | 3:511a14a12629 | 18 | AnalogIn emg3( A2 ); // third emg input |
mefix | 0:d02f4c7e8906 | 19 | |
RiP | 3:511a14a12629 | 20 | DigitalOut motor1dir(D7); //direction of motor 1, attach at m1, set to 0: cw |
RiP | 3:511a14a12629 | 21 | FastPWM motor1(D6); // speed of motor 1 |
RiP | 3:511a14a12629 | 22 | FastPWM motor2(D5); //speed of motor 2 |
RiP | 3:511a14a12629 | 23 | DigitalOut motor2dir(D4); //direction of motor 2, attach at m2, set to 0: ccw |
mefix | 0:d02f4c7e8906 | 24 | |
mefix | 0:d02f4c7e8906 | 25 | QEI Encoder1(D13,D12,NC,64,QEI::X4_ENCODING); //defining encoder |
mefix | 0:d02f4c7e8906 | 26 | QEI Encoder2(D11,D10,NC,64,QEI::X4_ENCODING); //defining encoder |
mefix | 0:d02f4c7e8906 | 27 | |
RiP | 3:511a14a12629 | 28 | //Define the Tickers |
RiP | 3:511a14a12629 | 29 | Ticker pos_timer; // the timer which is used to print the position every second |
RiP | 3:511a14a12629 | 30 | Ticker sample_timer; // the timer which is used to decide when a sample needs to be taken |
RiP | 3:511a14a12629 | 31 | Ticker control; //Ticker for processing encoder input |
RiP | 3:511a14a12629 | 32 | |
RiP | 3:511a14a12629 | 33 | //Initialize all variables |
RiP | 3:511a14a12629 | 34 | volatile bool sampletimer = false; // a variable which is changed when a sample needs to be taken |
RiP | 3:511a14a12629 | 35 | volatile bool controller_go=false; |
RiP | 3:511a14a12629 | 36 | |
RiP | 3:511a14a12629 | 37 | double threshold = 0.04; // the threshold which the emg signals need to surpass to do something |
RiP | 3:511a14a12629 | 38 | double samplefreq=0.002; // every 0.002 sec a sample will be taken this is a frequency of 500 Hz |
RiP | 3:511a14a12629 | 39 | double emg02; // the first emg signal |
RiP | 3:511a14a12629 | 40 | double emg12; // the second emg signal |
RiP | 3:511a14a12629 | 41 | double emg22; // the third emg signal |
RiP | 3:511a14a12629 | 42 | double ref_x=0.0000; // the x reference position |
RiP | 3:511a14a12629 | 43 | double ref_y=0.0000; // the y reference position |
RiP | 3:511a14a12629 | 44 | double old_ref_x; // the old x reference |
RiP | 3:511a14a12629 | 45 | double old_ref_y; // the old y reference |
RiP | 3:511a14a12629 | 46 | double speed=0.00002; // the variable with which a speed is reached of 1cm/s |
RiP | 3:511a14a12629 | 47 | double theta=0.0; // angle of the arm |
RiP | 3:511a14a12629 | 48 | double radius=0.0; // radius of the arm |
RiP | 3:511a14a12629 | 49 | |
RiP | 3:511a14a12629 | 50 | const double minRadius=0.3; // minimum radius of arm |
RiP | 3:511a14a12629 | 51 | const double maxRadius=0.6; // maximum radius of arm |
RiP | 3:511a14a12629 | 52 | const double minAngle=-1.25; // minimum angle for limiting controller |
RiP | 3:511a14a12629 | 53 | const double min_y=-0.28; // minimum height which the spatula can reach |
RiP | 3:511a14a12629 | 54 | char key; // variable to place the keyboard input |
RiP | 3:511a14a12629 | 55 | |
RiP | 3:511a14a12629 | 56 | double m1_pwm=0; //variable for PWM control motor 1 |
RiP | 3:511a14a12629 | 57 | double m2_pwm=0; //variable for PWM control motor 2 |
RiP | 3:511a14a12629 | 58 | |
RiP | 3:511a14a12629 | 59 | const double m1_Kp = 2.5, m1_Ki = 1.0, m1_Kd = 1.0, m1_N = 100; // controller constants motor 1 |
RiP | 3:511a14a12629 | 60 | double m1_v1 = 0, m1_v2 = 0; // Memory variables |
RiP | 3:511a14a12629 | 61 | const double m1_Ts = 0.01; // Controller sample time |
RiP | 3:511a14a12629 | 62 | |
RiP | 3:511a14a12629 | 63 | const double m2_Kp = 2.5, m2_Ki = 1.0, m2_Kd = 1.0, m2_N = 100; // controller constants motor 2 |
RiP | 3:511a14a12629 | 64 | double m2_v1 = 0, m2_v2 = 0; // Memory variables |
RiP | 3:511a14a12629 | 65 | const double m2_Ts = 0.01; // Controller sample time |
RiP | 3:511a14a12629 | 66 | |
RiP | 3:511a14a12629 | 67 | const double pi=3.14159265359; |
RiP | 3:511a14a12629 | 68 | const double res = 64/(1/131.25*2*pi); // resolution on gearbox shaft per pulse |
RiP | 3:511a14a12629 | 69 | const double V_max=9.0; // maximum voltage supplied by trafo |
RiP | 3:511a14a12629 | 70 | const double pulleyDiameter=0.0398; // pulley diameter |
RiP | 3:511a14a12629 | 71 | |
RiP | 3:511a14a12629 | 72 | double timer=0.001; // needed for testing |
RiP | 3:511a14a12629 | 73 | |
RiP | 3:511a14a12629 | 74 | //Define the needed Biquad chains |
RiP | 3:511a14a12629 | 75 | BiQuadChain bqc11; |
RiP | 3:511a14a12629 | 76 | BiQuadChain bqc13; |
RiP | 3:511a14a12629 | 77 | BiQuadChain bqc21; |
RiP | 3:511a14a12629 | 78 | BiQuadChain bqc23; |
RiP | 3:511a14a12629 | 79 | BiQuadChain bqc31; |
RiP | 3:511a14a12629 | 80 | BiQuadChain bqc33; |
mefix | 0:d02f4c7e8906 | 81 | |
RiP | 3:511a14a12629 | 82 | //Define the BiQuads for the filter of the first emg signal |
RiP | 3:511a14a12629 | 83 | //Notch filter |
RiP | 3:511a14a12629 | 84 | BiQuad bq111(0.9795, -1.5849, 0.9795, 1.0000, -1.5849, 0.9589); |
RiP | 3:511a14a12629 | 85 | BiQuad bq112(0.9833, -1.5912, 0.9833, 1.0000, -1.5793, 0.9787); |
RiP | 3:511a14a12629 | 86 | BiQuad bq113(0.9957, -1.6111, 0.9957, 1.0000, -1.6224, 0.9798); |
RiP | 3:511a14a12629 | 87 | //High pass filter |
RiP | 3:511a14a12629 | 88 | //BiQuad bq121( 9.56543e-01, -1.91309e+00, 9.56543e-01, -1.91120e+00, 9.14976e-01 ); //Old biquad values |
RiP | 3:511a14a12629 | 89 | BiQuad bq121( 0.8956, -1.7911, 0.8956, 1.0000, -1.7814, 0.7941); |
RiP | 3:511a14a12629 | 90 | BiQuad bq122( 0.9192, -1.8385, 0.9192, 1.0000, -1.8319, 0.8450); |
RiP | 3:511a14a12629 | 91 | BiQuad bq123( 0.9649, -1.9298, 0.9649, 1.0000, -1.9266, 0.9403); |
RiP | 3:511a14a12629 | 92 | //Low pass filter |
RiP | 3:511a14a12629 | 93 | BiQuad bq131( 3.91302e-05, 7.82604e-05, 3.91302e-05, -1.98223e+00, 9.82385e-01 ); |
RiP | 3:511a14a12629 | 94 | |
RiP | 3:511a14a12629 | 95 | //Define the BiQuads for the filter of the second emg signal |
RiP | 3:511a14a12629 | 96 | //Notch filter |
RiP | 3:511a14a12629 | 97 | BiQuad bq211 = bq111; |
RiP | 3:511a14a12629 | 98 | BiQuad bq212 = bq112; |
RiP | 3:511a14a12629 | 99 | BiQuad bq213 = bq113; |
RiP | 3:511a14a12629 | 100 | //High pass filter |
RiP | 3:511a14a12629 | 101 | BiQuad bq221 = bq121; |
RiP | 3:511a14a12629 | 102 | BiQuad bq222 = bq122; |
RiP | 3:511a14a12629 | 103 | BiQuad bq223 = bq123; |
RiP | 3:511a14a12629 | 104 | //Low pass filter |
RiP | 3:511a14a12629 | 105 | BiQuad bq231 = bq131; |
mefix | 0:d02f4c7e8906 | 106 | |
RiP | 3:511a14a12629 | 107 | //Define the BiQuads for the filter of the third emg signal |
RiP | 3:511a14a12629 | 108 | //notch filter |
RiP | 3:511a14a12629 | 109 | BiQuad bq311 = bq111; |
RiP | 3:511a14a12629 | 110 | BiQuad bq312 = bq112; |
RiP | 3:511a14a12629 | 111 | BiQuad bq313 = bq113; |
RiP | 3:511a14a12629 | 112 | //High pass filter |
RiP | 3:511a14a12629 | 113 | BiQuad bq321 = bq121; |
RiP | 3:511a14a12629 | 114 | BiQuad bq323 = bq122; |
RiP | 3:511a14a12629 | 115 | BiQuad bq322 = bq123; |
RiP | 3:511a14a12629 | 116 | //low pass filter |
RiP | 3:511a14a12629 | 117 | BiQuad bq331 = bq131; |
RiP | 3:511a14a12629 | 118 | |
RiP | 3:511a14a12629 | 119 | void sampleflag() |
RiP | 3:511a14a12629 | 120 | { |
RiP | 3:511a14a12629 | 121 | if (sampletimer==true) { |
RiP | 3:511a14a12629 | 122 | // this if statement is used to see if the code takes too long before it is called again |
RiP | 3:511a14a12629 | 123 | pc.printf("rate too high error in sampleflag\n\r"); |
RiP | 3:511a14a12629 | 124 | } |
RiP | 3:511a14a12629 | 125 | //This sets the go flag for when the function sample needs to be called |
RiP | 3:511a14a12629 | 126 | sampletimer=true; |
RiP | 3:511a14a12629 | 127 | } |
RiP | 3:511a14a12629 | 128 | |
RiP | 3:511a14a12629 | 129 | void activate_controller() |
RiP | 3:511a14a12629 | 130 | { |
RiP | 3:511a14a12629 | 131 | if (sampletimer==true) { |
RiP | 3:511a14a12629 | 132 | // this if statement is used to see if the code takes too long before it is called again |
RiP | 3:511a14a12629 | 133 | pc.printf("rate too high error in activate_controller\n\r"); |
RiP | 3:511a14a12629 | 134 | } |
RiP | 3:511a14a12629 | 135 | controller_go=true; //activate go flag |
RiP | 3:511a14a12629 | 136 | } |
mefix | 0:d02f4c7e8906 | 137 | |
mefix | 0:d02f4c7e8906 | 138 | double PID( double err, const double Kp, const double Ki, const double Kd, |
RiP | 3:511a14a12629 | 139 | const double Ts, const double N, double &v1, double &v2 ) //discrete PIDF filter |
RiP | 3:511a14a12629 | 140 | { |
mefix | 0:d02f4c7e8906 | 141 | const double a1 =-4/(N*Ts+2), |
RiP | 3:511a14a12629 | 142 | a2=-(N*Ts-2)/(N*Ts+2), |
RiP | 3:511a14a12629 | 143 | b0=(4*Kp + 4*Kd*N + 2*Ki*Ts+2*Kp*N*Ts+Ki*N*pow(Ts,2))/(2*N*Ts+4), |
RiP | 3:511a14a12629 | 144 | b1=(Ki*N*pow(Ts,2)-4*Kp-4*Kd*N)/(N*Ts+2), |
RiP | 3:511a14a12629 | 145 | b2=(4*Kp+4*Kd*N-2*Ki*Ts-2*Kp*N*Ts+Ki*N*pow(Ts,2))/(2*N*Ts+4); |
mefix | 0:d02f4c7e8906 | 146 | |
mefix | 0:d02f4c7e8906 | 147 | double v=err-a1*v1-a2*v2; |
mefix | 2:625837aa7a56 | 148 | double u=b0*v+b1*v1+b2*v2; |
RiP | 3:511a14a12629 | 149 | v2=v1; |
RiP | 3:511a14a12629 | 150 | v1=v; |
mefix | 0:d02f4c7e8906 | 151 | return u; |
mefix | 0:d02f4c7e8906 | 152 | } |
mefix | 0:d02f4c7e8906 | 153 | |
RiP | 3:511a14a12629 | 154 | void calibrate() |
RiP | 3:511a14a12629 | 155 | { |
RiP | 3:511a14a12629 | 156 | //This resets the reference signals so that the robot can be calibrated |
RiP | 3:511a14a12629 | 157 | ref_x=0.0000; |
RiP | 3:511a14a12629 | 158 | ref_y=0.0000; |
RiP | 3:511a14a12629 | 159 | } |
RiP | 3:511a14a12629 | 160 | |
RiP | 3:511a14a12629 | 161 | void sample() |
RiP | 3:511a14a12629 | 162 | { |
RiP | 3:511a14a12629 | 163 | //This checks if a key is pressed and changes the variable key in the pressed key |
RiP | 3:511a14a12629 | 164 | if (pc.readable()==1) { |
RiP | 3:511a14a12629 | 165 | key=pc.getc(); |
RiP | 3:511a14a12629 | 166 | } |
RiP | 3:511a14a12629 | 167 | //Read the emg signals and filter it |
RiP | 3:511a14a12629 | 168 | |
RiP | 3:511a14a12629 | 169 | emg02=bqc13.step(fabs(bqc11.step(emg1.read()))); //filtered signal 0 |
RiP | 3:511a14a12629 | 170 | emg12=bqc23.step(fabs(bqc21.step(emg2.read()))); //filtered signal 1 |
RiP | 3:511a14a12629 | 171 | emg22=bqc33.step(fabs(bqc31.step(emg3.read()))); //filtered signal 2 |
RiP | 3:511a14a12629 | 172 | |
RiP | 3:511a14a12629 | 173 | //remember what the reference was |
RiP | 3:511a14a12629 | 174 | old_ref_x=ref_x; |
RiP | 3:511a14a12629 | 175 | old_ref_y=ref_y; |
RiP | 3:511a14a12629 | 176 | //look if the emg signals go over the threshold and change the reference accordingly |
RiP | 3:511a14a12629 | 177 | if (emg02>threshold&&emg12>threshold&&emg22>threshold || key=='d') { |
RiP | 3:511a14a12629 | 178 | ref_x=ref_x-speed; |
RiP | 3:511a14a12629 | 179 | ref_y=ref_y-speed; |
RiP | 3:511a14a12629 | 180 | |
RiP | 3:511a14a12629 | 181 | } else if (emg02>threshold&&emg12>threshold || key == 'a' ) { |
RiP | 3:511a14a12629 | 182 | ref_x=ref_x-speed; |
RiP | 3:511a14a12629 | 183 | |
RiP | 3:511a14a12629 | 184 | } else if (emg02>threshold&&emg22>threshold || key == 's') { |
RiP | 3:511a14a12629 | 185 | ref_y=ref_y-speed; |
RiP | 3:511a14a12629 | 186 | |
RiP | 3:511a14a12629 | 187 | } else if (emg12>threshold&&emg22>threshold || key == 'e' ) { |
RiP | 3:511a14a12629 | 188 | ref_x=ref_x+speed; |
RiP | 3:511a14a12629 | 189 | ref_y=ref_y+speed; |
RiP | 3:511a14a12629 | 190 | |
RiP | 3:511a14a12629 | 191 | } else if (emg12>threshold || key == 'q' ) { |
RiP | 3:511a14a12629 | 192 | ref_x=ref_x+speed; |
RiP | 3:511a14a12629 | 193 | |
RiP | 3:511a14a12629 | 194 | } else if (emg22>threshold || key == 'w') { |
RiP | 3:511a14a12629 | 195 | ref_y=ref_y+speed; |
RiP | 3:511a14a12629 | 196 | } |
RiP | 3:511a14a12629 | 197 | |
RiP | 3:511a14a12629 | 198 | // convert the x and y reference to the theta and radius reference |
RiP | 3:511a14a12629 | 199 | theta=atan(ref_y/(ref_x+minRadius)); |
RiP | 3:511a14a12629 | 200 | radius=sqrt(pow(ref_x+minRadius,2)+pow(ref_y,2)); |
mefix | 0:d02f4c7e8906 | 201 | |
RiP | 3:511a14a12629 | 202 | //look if the new reference is outside the possible range and revert back to the old reference if it is outside the range |
RiP | 3:511a14a12629 | 203 | if (theta < minAngle) { |
RiP | 3:511a14a12629 | 204 | ref_x=old_ref_x; |
RiP | 3:511a14a12629 | 205 | ref_y=old_ref_y; |
RiP | 3:511a14a12629 | 206 | } else if (radius < minRadius) { |
RiP | 3:511a14a12629 | 207 | ref_x=old_ref_x; |
RiP | 3:511a14a12629 | 208 | ref_y=old_ref_y; |
RiP | 3:511a14a12629 | 209 | } else if ( radius > maxRadius) { |
RiP | 3:511a14a12629 | 210 | ref_x=old_ref_x; |
RiP | 3:511a14a12629 | 211 | ref_y=old_ref_y; |
RiP | 3:511a14a12629 | 212 | } else if (ref_y<min_y) { |
RiP | 3:511a14a12629 | 213 | ref_x=old_ref_x; |
RiP | 3:511a14a12629 | 214 | ref_y=old_ref_y; |
RiP | 3:511a14a12629 | 215 | } |
RiP | 3:511a14a12629 | 216 | } |
mefix | 0:d02f4c7e8906 | 217 | |
RiP | 3:511a14a12629 | 218 | void controller() //function for executing controller action |
RiP | 3:511a14a12629 | 219 | { |
RiP | 3:511a14a12629 | 220 | |
RiP | 3:511a14a12629 | 221 | double theta = sin(0.5*pi*timer); // just for testing |
RiP | 3:511a14a12629 | 222 | double radius = 0.3; // just for testing |
RiP | 3:511a14a12629 | 223 | //converting radius and theta to gearbox angle |
RiP | 3:511a14a12629 | 224 | double ref_angle1=16*theta; |
RiP | 3:511a14a12629 | 225 | double ref_angle2=(-radius+minRadius)/pi/pulleyDiameter; |
RiP | 3:511a14a12629 | 226 | |
RiP | 3:511a14a12629 | 227 | double angle1 = Encoder1.getPulses()/res; //get number of pulses (counterclockwise is positive) |
RiP | 3:511a14a12629 | 228 | double angle2 = Encoder2.getPulses()/res; //get number of pulses |
RiP | 3:511a14a12629 | 229 | |
RiP | 3:511a14a12629 | 230 | //divide by voltage to get pwm duty cycle percentage) |
RiP | 3:511a14a12629 | 231 | m1_pwm = (PID(ref_angle1-angle1,m1_Kp,m1_Ki,m1_Kd,m1_Ts,m1_N,m1_v1,m1_v2))/V_max; |
RiP | 3:511a14a12629 | 232 | m2_pwm = (PID(ref_angle2-angle2,m2_Kp,m2_Ki,m2_Kd,m2_Ts,m2_N,m2_v1,m2_v2))/V_max; |
RiP | 3:511a14a12629 | 233 | |
RiP | 3:511a14a12629 | 234 | //limit pwm value and change motor direction when pwm becomes either negative or positive |
RiP | 3:511a14a12629 | 235 | if (m1_pwm >=0.0f && m1_pwm <=1.0f) { |
RiP | 3:511a14a12629 | 236 | motor1dir=0; |
RiP | 3:511a14a12629 | 237 | motor1.write(m1_pwm); |
RiP | 3:511a14a12629 | 238 | } else if (m1_pwm < 0.0f && m1_pwm >= -1.0f) { |
RiP | 3:511a14a12629 | 239 | motor1dir=1; |
RiP | 3:511a14a12629 | 240 | motor1.write(-m1_pwm); |
RiP | 3:511a14a12629 | 241 | } |
RiP | 3:511a14a12629 | 242 | |
RiP | 3:511a14a12629 | 243 | if (m2_pwm >=0.0f && m2_pwm <=1.0f) { |
RiP | 3:511a14a12629 | 244 | motor1dir=0; |
RiP | 3:511a14a12629 | 245 | motor1.write(m2_pwm); |
RiP | 3:511a14a12629 | 246 | } else if (m2_pwm < 0.0f && m2_pwm >= -1.0f) { |
RiP | 3:511a14a12629 | 247 | motor1dir=1; |
RiP | 3:511a14a12629 | 248 | motor1.write(-m2_pwm); |
RiP | 3:511a14a12629 | 249 | } |
RiP | 3:511a14a12629 | 250 | |
RiP | 3:511a14a12629 | 251 | //hidsopce to check what the code does exactly |
RiP | 3:511a14a12629 | 252 | scope.set(0,angle1); |
RiP | 3:511a14a12629 | 253 | scope.set(1,ref_angle1-angle1); //error |
RiP | 3:511a14a12629 | 254 | scope.set(2,m1_pwm); |
RiP | 3:511a14a12629 | 255 | scope.send(); |
RiP | 3:511a14a12629 | 256 | |
RiP | 3:511a14a12629 | 257 | timer=timer+0.001; |
RiP | 3:511a14a12629 | 258 | } |
RiP | 3:511a14a12629 | 259 | |
RiP | 3:511a14a12629 | 260 | void my_pos() |
RiP | 3:511a14a12629 | 261 | { |
RiP | 3:511a14a12629 | 262 | //This function is attached to a ticker so that the reference position is printed every second. |
RiP | 3:511a14a12629 | 263 | pc.printf("x_pos=%.4f\ty_pos=%.4f\tradius=%.4f\tangle=%.4f\n\r",ref_x,ref_y,radius,theta); |
RiP | 3:511a14a12629 | 264 | |
RiP | 3:511a14a12629 | 265 | } |
RiP | 3:511a14a12629 | 266 | |
RiP | 3:511a14a12629 | 267 | int main() |
RiP | 3:511a14a12629 | 268 | { |
RiP | 3:511a14a12629 | 269 | pc.printf("RESET\n\r"); |
mefix | 0:d02f4c7e8906 | 270 | pc.baud(115200); |
mefix | 0:d02f4c7e8906 | 271 | motor1.period(0.02f); //period of pwm signal for motor 1 |
mefix | 0:d02f4c7e8906 | 272 | motor2.period(0.02f); // period of pwm signal for motor 2 |
RiP | 3:511a14a12629 | 273 | motor1dir=0; // setting direction to ccw |
mefix | 0:d02f4c7e8906 | 274 | motor2dir=0; // setting direction to ccw |
mefix | 1:ffa6f4d78c8e | 275 | control.attach(&activate_controller,m1_Ts); //Ticker for processing encoder input |
RiP | 3:511a14a12629 | 276 | |
RiP | 3:511a14a12629 | 277 | //Attach the Biquads to the Biquad chains |
RiP | 3:511a14a12629 | 278 | bqc11.add( &bq111 ).add( &bq112 ).add( &bq113 ).add( &bq121 ).add( &bq122 ).add( &bq123 ); |
RiP | 3:511a14a12629 | 279 | bqc13.add( &bq131); |
RiP | 3:511a14a12629 | 280 | bqc21.add( &bq211 ).add( &bq212 ).add( &bq213 ).add( &bq221 ).add( &bq222 ).add( &bq223 ); |
RiP | 3:511a14a12629 | 281 | bqc23.add( &bq231); |
RiP | 3:511a14a12629 | 282 | bqc31.add( &bq311 ).add( &bq312 ).add( &bq313 ).add( &bq321 ).add( &bq322 ).add( &bq323 ); |
RiP | 3:511a14a12629 | 283 | bqc33.add( &bq331); |
RiP | 3:511a14a12629 | 284 | |
RiP | 3:511a14a12629 | 285 | //Attach the 'sample' function to the timer 'sample_timer'. |
RiP | 3:511a14a12629 | 286 | //this ensures that 'sample' is executed every 0.002 seconds = 500 Hz |
RiP | 3:511a14a12629 | 287 | sample_timer.attach(&sampleflag, samplefreq); |
RiP | 3:511a14a12629 | 288 | //Attach the function calibrate to the button interrupt |
RiP | 3:511a14a12629 | 289 | button_calibrate.fall(&calibrate); |
RiP | 3:511a14a12629 | 290 | //Attach the function my_pos to the timer pos_timer. |
RiP | 3:511a14a12629 | 291 | //This ensures that the position is printed every second. |
RiP | 3:511a14a12629 | 292 | pos_timer.attach(&my_pos, 1); |
mefix | 0:d02f4c7e8906 | 293 | while (true) { |
RiP | 3:511a14a12629 | 294 | //Only take a sample when the go flag is true. |
RiP | 3:511a14a12629 | 295 | if (sampletimer==true) { |
RiP | 3:511a14a12629 | 296 | sample(); |
RiP | 3:511a14a12629 | 297 | sampletimer = false; //change sampletimer to false if sample() has finished |
RiP | 3:511a14a12629 | 298 | } |
RiP | 3:511a14a12629 | 299 | |
RiP | 3:511a14a12629 | 300 | if(controller_go) { // go flag |
mefix | 0:d02f4c7e8906 | 301 | controller(); |
RiP | 3:511a14a12629 | 302 | controller_go=false; //change controller_go to false if controller() has finished |
mefix | 2:625837aa7a56 | 303 | } |
mefix | 0:d02f4c7e8906 | 304 | } |
mefix | 0:d02f4c7e8906 | 305 | } |