Working file for communication with ROS
Dependencies: QEI2 PID VL53L1X_Filter
wheelchair.cpp
- Committer:
- ryanlin97
- Date:
- 2018-08-13
- Revision:
- 14:9caca9fde9b0
- Parent:
- 12:921488918749
- Child:
- 17:7f3b69300bb6
File content as of revision 14:9caca9fde9b0:
#include "wheelchair.h" bool manual_drive = false; volatile float north; //volatile double curr_yaw; double curr_yaw; double Setpoint, Output; PID myPID(&curr_yaw, &Output, &Setpoint, .1, .1, 5, DIRECT); void Wheelchair::compass_thread() { //north = lowPass(imu->angle_north()); //Input = (double)curr_yaw; curr_yaw = imu->yaw(); north = boxcar(imu->angle_north()); //out->printf("curr_yaw %f\n", curr_yaw); //out->printf("%f\n", curr_yaw); //out->printf("%f gyroz\n",imu->gyro_z()); //out->printf("yaw is %f, north is %f, curr_yaw is %f\n", comp_yn, north, curr_yaw); //out->printf("Yaw is %f\n", imu->yaw()); //out->printf("north is %f\n", imu->angle_north()); } Wheelchair::Wheelchair(PinName xPin, PinName yPin, Serial* pc, Timer* time ) { x = new PwmOut(xPin); y = new PwmOut(yPin); imu = new chair_BNO055(pc, time); //imu = new chair_MPU9250(pc, time); Wheelchair::stop(); imu->setup(); out = pc; out->printf("wheelchair setup done \n"); ti = time; wheel = new QEI(Encoder1, Encoder2, NC, EncoderReadRate); myPID.SetMode(AUTOMATIC); } /* * joystick has analog out of 200-700, scale values between 1.3 and 3.3 */ void Wheelchair::move(float x_coor, float y_coor) { float scaled_x = ((x_coor * 1.6f) + 1.7f)/3.3f; float scaled_y = (3.3f - (y_coor * 1.6f))/3.3f; // lowPass(scaled_x); //lowPass(scaled_y); x->write(scaled_x); y->write(scaled_y); //out->printf("yaw %f\n", imu->yaw()); } void Wheelchair::forward() { x->write(high); y->write(def+offset); } void Wheelchair::backward() { x->write(low); y->write(def); } void Wheelchair::right() { x->write(def); y->write(low); } void Wheelchair::left() { x->write(def); y->write(high); } void Wheelchair::stop() { x->write(def); y->write(def); } // counter clockwise is - // clockwise is + void Wheelchair::pid_right(int deg) { bool overturn = false; out->printf("pid right\n"); x->write(def); Setpoint = curr_yaw + deg; if(Setpoint > 360) { Setpoint -= 360; overturn = true; } myPID.SetOutputLimits(low, def); myPID.SetControllerDirection(REVERSE); out->printf("setpoint %f curr_yaw %f input %f output %i %i same address\n", Setpoint, curr_yaw, *(myPID.myInput), *(myPID.myOutput), (myPID.myInput==&curr_yaw), (myPID.myOutput == &Output) ); out->printf("addresses %i %i\n", myPID.myInput, &curr_yaw); while(myPID.Compute()) { y->write(Output); out->printf("curr_yaw %f\n", curr_yaw); } Wheelchair::stop(); out->printf("done \n"); } void Wheelchair::pid_left(int deg) { bool overturn = false; x->write(def); Setpoint = curr_yaw - deg; if(Setpoint < 0) { Setpoint += 360; overturn = true; } myPID.SetOutputLimits(def,high); myPID.SetControllerDirection(DIRECT); while(myPID.Compute()) { y->write(Output); out->printf("curr_yaw %f\n", curr_yaw); } Wheelchair::stop(); } void Wheelchair::pid_turn(int deg) { if(deg > 180) { deg -= 360; } else if(deg < -180) { deg+=360; } int turnAmt = abs(deg); ti->reset(); if(deg >= 0){ Wheelchair::pid_right(turnAmt); } else { Wheelchair::pid_left(turnAmt); } } double Wheelchair::turn_right(int deg) { bool overturn = false; out->printf("turning right\n"); double start = curr_yaw; double final = start + deg; if(final > 360) { final -= 360; overturn = true; } out->printf("start %f, final %f\n", start, final); double curr = -1; while(curr <= final - 30) { Wheelchair::right(); if( out->readable()) { out->printf("stopped\n"); Wheelchair::stop(); return; } curr = curr_yaw; if(overturn && curr > (360 - deg) ) { curr = 0; } } out->printf("done turning start %f final %f\n", start, final); Wheelchair::stop(); //delete me wait(5); float correction = final - curr_yaw; out->printf("final pos %f actual pos %f\n", final, curr_yaw); Wheelchair::turn_left(abs(correction)); Wheelchair::stop(); wait(5); out->printf("curr_yaw %f\n", curr_yaw); return final; } double Wheelchair::turn_left(int deg) { bool overturn = false; out->printf("turning left\n"); double start = curr_yaw; double final = start - deg; if(final < 0) { final += 360; overturn = true; } out->printf("start %f, final %f\n", start, final); double curr = 361; while(curr >= final) { Wheelchair::left(); if( out->readable()) { out->printf("stopped\n"); Wheelchair::stop(); return; } curr = curr_yaw; if(overturn && curr >= 0 && curr <= start ) { curr = 361; } } out->printf("done turning start %f final %f\n", start, final); Wheelchair::stop(); //delete me wait(2); /* float correction = final - curr_yaw; out->printf("final pos %f actual pos %f\n", final, curr_yaw); Wheelchair::turn_right(abs(correction)); Wheelchair::stop(); */ return final; } void Wheelchair::turn(int deg) { if(deg > 180) { deg -= 360; } else if(deg < -180) { deg+=360; } double finalpos; int turnAmt = abs(deg); //ti->reset(); /* if(deg >= 0){ finalpos = Wheelchair::turn_right(turnAmt); } else { finalpos = Wheelchair::turn_left(turnAmt); } */ wait(2); float correction = finalpos - curr_yaw; out->printf("final pos %f actual pos %f\n", finalpos, curr_yaw); //if(abs(correction) > turn_precision) { out->printf("correcting %f\n", correction); //ti->reset(); Wheelchair::turn_left(curr_yaw - finalpos); return; //} } float Wheelchair::getDistance() { return wheel->getDistance(Diameter); } void Wheelchair::resetDistance(){ wheel->reset(); }