Yeah
Dependencies: HCSR04 PID PololuQik2 QEI Sharp mbed-rtos
Fork of NavigationTest by
main.cpp
- Committer:
- jjcarr2
- Date:
- 2014-03-27
- Revision:
- 10:2aa70a504c18
- Parent:
- 9:f34700716f1d
- Child:
- 11:12ce7600f2f9
File content as of revision 10:2aa70a504c18:
#include "rtos.h" #include "PID.h" #include "PololuQik2.h" #include "QEI.h" #include "mbed.h" #include "HCSR04.h" #include "stdio.h" #include "LPC17xx.h" #include "Sharp.h" #define PIN_TRIGGERL (p12) #define PIN_ECHOL (p11) #define PIN_TRIGGERR (p29) #define PIN_ECHOR (p30) #define PULSE_PER_REV (1192) #define WHEEL_CIRCUM (12.56637) #define DIST_PER_PULSE (0.01054225722682) #define MTRS_TO_INCH (39.3701) #define MAX_SPEED (0.3*127) #define PPR (4331/4) #define LEFT (1) #define RIGHT (0) #define FORWARD (1) #define BACKWARD (0) #define TOOLS (0) #define MID (1) #define RIGS (2) #define FIRST_WAVE (0) #define FAR (1) float range, range2, pid_return; void errFunction(void); bool cRc; //Hardware Initialization Serial bt(p13,p14); Serial pc(USBTX,USBRX); HCSR04 rangeFinderLeft( PIN_TRIGGERL, PIN_ECHOL ); HCSR04 rangeFinderRight( PIN_TRIGGERR, PIN_ECHOR ); PID pid1(15.0,0.0,4.0,0.02); PololuQik2 motors(p9, p10, p8, p15, errFunction, cRc); QEI rightEncoder(p17,p18,NC,PPR,QEI::X4_ENCODING); QEI leftEncoder(p16,p15,NC,PPR,QEI::X4_ENCODING); Sharp IR(p20); //InterruptIn encoder(p29); //Functions float wall_follow(int side, int direction, int section); void wall_follow2(int side, int direction, int section, float location); void wall_follow3(int ¤tLocation, int &WaveOpening); void leftTurn(void); void slightleft(void); void rightTurn(void); void us_distance(void); void tools_section(float* location, float ¤t); void mid_section(float* location, float ¤t, int* direction); void mid_section2(float* location, float ¤t, int* direction); void rig_section(float* location, float ¤t, int* direction, int rig); void overBump(int section); void alignWithWall(int section); //Variables int main(void) { float location[3], current=0; int direction[3]; double distance; pc.baud(115200); bt.baud(115200); motors.begin(); bt.printf("START\r\n"); //Go to tools tools_section(location, current); mid_section(location, current, direction); //mid_section2(location, current, direction); /* while(1) { //bt.printf("IR %f\r\n", US.getDistance()); rangeFinderLeft.startMeas(); wait_ms(20); rangeFinderLeft.getMeas(range); bt.printf("Range = %f\n\r", range); wait_ms(200); }*/ //leftTurn(); //rightTurn(); } void errFunction(void) { //Nothing } void us_distance(void) { pc.printf("Ultra Sonic\n\r"); rangeFinderLeft.startMeas(); wait_us(20); if ( (rangeFinderLeft.getMeas(range) == RANGE_MEAS_VALID)) { pc.printf("Range = %f\n\r", range); } } float wall_follow(int side, int direction, int section) { float location, wavegap=0, set=5; int dir=1; pid1.reset(); if(direction == BACKWARD) dir=-1; if(section == TOOLS)set= 10; leftEncoder.reset(); rightEncoder.reset(); location=(abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2; while(location< 73) { location=(abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2; pid1.setInputLimits(0, set); pid1.setOutputLimits( -MAX_SPEED, MAX_SPEED); pid1.setSetPoint(set); if(side) { rangeFinderLeft.startMeas(); wait_ms(38); rangeFinderLeft.getMeas(range); } else { rangeFinderRight.startMeas(); wait_ms(38); rangeFinderRight.getMeas(range); pc.printf("%d\r\n",range); } if(range > 20) { wavegap=(abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2; //bt.printf("wavegap %f\r\n",wavegap); // AT WAVE OPENING!!!! motors.setMotor1Speed(dir*0.4*127);//left motors.setMotor0Speed(dir*0.4*127);//right } else { pid1.setProcessValue(range); pid_return = pid1.compute(); if(pid_return > 0) { if(side) { motors.setMotor0Speed(dir*MAX_SPEED - dir*pid_return);//right motors.setMotor1Speed(dir*MAX_SPEED);//left } else { motors.setMotor1Speed(dir*MAX_SPEED - dir*pid_return);//left motors.setMotor0Speed(dir*MAX_SPEED);//right } } else if(pid_return < 0) { if(side) { motors.setMotor0Speed(dir*MAX_SPEED);//right motors.setMotor1Speed(dir*MAX_SPEED + dir*pid_return);//left } else { motors.setMotor1Speed(dir*MAX_SPEED);//left motors.setMotor0Speed(dir*MAX_SPEED + dir*pid_return);//right } } else { motors.setMotor0Speed(dir*MAX_SPEED);//right motors.setMotor1Speed(dir*MAX_SPEED);//left } } } return wavegap; } /* MODIFIED WALL_FOLLOW FOR NAVIGATION */ void wall_follow2(int side, int direction, int section, float location) { int SeeWaveGap = false, dir=1; float set=5, loc=0; pid1.reset(); if(direction == BACKWARD) dir=-1; if(section == TOOLS)set= 5; leftEncoder.reset(); rightEncoder.reset(); while(dir*loc + location <= 78) { loc=(abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2; pid1.setInputLimits(0.0, set); pid1.setOutputLimits( -MAX_SPEED, MAX_SPEED); pid1.setSetPoint(set); if(side) { rangeFinderLeft.startMeas(); wait_ms(38); rangeFinderLeft.getMeas(range); } else { rangeFinderRight.startMeas(); wait_ms(38); rangeFinderRight.getMeas(range); } /*************CHECK FOR WAVE OPENING*****************/ /* If after 20 ms the ultrasonic still sees 20+ cm */ /* then robot is at wave opening */ //bt.printf("wall follow 2 range %f\r\n",range); //bt.printf("loc+location = %f\r\n", loc+location); if(range > 20) { motors.stopBothMotors(); bt.printf("wavegap\r\n"); // AT WAVE OPENING!!!! break; } pid1.setProcessValue(range); pid_return = pid1.compute(); //bt.printf("Range: %f\n PID: %f\r\n", range, pid_return); if(pid_return > 0) { if(side) { motors.setMotor0Speed(dir*MAX_SPEED - dir*pid_return);//right motors.setMotor1Speed(dir*MAX_SPEED);//left } else { motors.setMotor1Speed(dir*MAX_SPEED - dir*pid_return);//left motors.setMotor0Speed(dir*MAX_SPEED);//right } } else if(pid_return < 0) { if(side) { motors.setMotor0Speed(dir*MAX_SPEED);//right motors.setMotor1Speed(dir*MAX_SPEED + dir*pid_return);//left } else { motors.setMotor1Speed(dir*MAX_SPEED);//left motors.setMotor0Speed(dir*MAX_SPEED + dir*pid_return);//right } } else { motors.setMotor0Speed(dir*MAX_SPEED); motors.setMotor1Speed(dir*MAX_SPEED); } } motors.stopBothMotors(); } void alignWithWall(int section) { float usValue = 0; if(section == TOOLS) { // turn at an angle leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(-1.2*MAX_SPEED); //right motors.setMotor1Speed(0.4*MAX_SPEED); //left while(rightEncoder.getPulses()>-1000); motors.stopBothMotors(); //go backwards toward wall leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(-MAX_SPEED); //right motors.setMotor1Speed(-MAX_SPEED); //left while(abs(leftEncoder.getPulses()) < 300 || abs(rightEncoder.getPulses()) < 300); motors.stopBothMotors(); // turn left towards wall leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(MAX_SPEED); //right motors.setMotor1Speed(-MAX_SPEED); //left while(rightEncoder.getPulses() < 10 || abs(leftEncoder.getPulses()) < 10); motors.stopBothMotors(); motors.setMotor0Speed(0.7*MAX_SPEED); //right motors.setMotor1Speed(-0.7*MAX_SPEED); //left } else { rightTurn(); motors.setMotor0Speed(-0.7*MAX_SPEED); //right motors.setMotor1Speed(0.7*MAX_SPEED); //left } usValue = 0; while(1) { rangeFinderLeft.startMeas(); wait_ms(20); rangeFinderLeft.getMeas(range); //bt.printf("Range %f \t OldValue %f\n\r",range, usValue); if(range > usValue && usValue != 0 && range < 25) { break; } else { usValue = range; } } motors.stopBothMotors(); } void rightTurn(void) { motors.begin(); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(-0.5*127);//right motors.setMotor1Speed(0.5*127);//left while(leftEncoder.getPulses()<900 || rightEncoder.getPulses()>-900); motors.stopBothMotors(); } void leftTurn(void) { /* leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.4*MAX_SPEED); //right motors.setMotor1Speed(-MAX_SPEED); //left while(abs(leftEncoder.getPulses())<2500); motors.stopBothMotors(); */ motors.begin(); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.5*127);// right motors.setMotor1Speed(-0.5*127);// left while(abs(leftEncoder.getPulses())<1000 || rightEncoder.getPulses()<1000); motors.stopBothMotors(); } void slightleft(void){ leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.5*127);// right motors.setMotor1Speed(-0.5*127);// left while(abs(leftEncoder.getPulses())<50 || rightEncoder.getPulses()<50); motors.stopBothMotors(); } void overBump(int section) { int preLeft=5000, preRight=5000, out=0; motors.begin(); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(-0.2*127); //right motors.setMotor1Speed(-0.2*127); //left while(abs(leftEncoder.getPulses()) < 50 || abs(rightEncoder.getPulses())< 50); motors.stopBothMotors(); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.2*127); //right motors.setMotor1Speed(0.2*127); //left while(/*(abs(leftEncoder.getPulses()) < 1000 || abs(rightEncoder.getPulses())< 1000)*/ IR.getDistance() >20 && preLeft!=0){ preLeft=leftEncoder.getPulses(); preRight=rightEncoder.getPulses(); wait_ms(100); //bt.printf(" first while left %d right %d \r\n", preLeft, preRight); if(leftEncoder.getPulses() == preLeft || rightEncoder.getPulses()== preRight) preLeft=preRight=0; } motors.stopBothMotors(); motors.begin(); wait(2); /* motors.stopBothMotors(); motors.setMotor0Speed(0.15*127); //right motors.setMotor1Speed(0.15*127); //left preLeft=preRight=5000 ; leftEncoder.reset(); rightEncoder.reset(); */ // while(/*(abs(leftEncoder.getPulses()) < 1000 || abs(rightEncoder.getPulses())< 1000)*/ IR.getDistance() >20 && preLeft!=0){ /* preLeft=leftEncoder.getPulses(); preRight=rightEncoder.getPulses(); bt.printf("second while left %d right %d \r\n", preLeft, preRight); wait_ms(200); if(leftEncoder.getPulses() == preLeft || rightEncoder.getPulses()== preRight) preLeft=preRight=0; }*/ leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.3*127); //right motors.setMotor1Speed(0.3*127); //left while(!out) { preLeft=leftEncoder.getPulses(); preRight=rightEncoder.getPulses(); rangeFinderLeft.startMeas(); rangeFinderRight.startMeas(); wait_ms(20); rangeFinderLeft.getMeas(range); rangeFinderRight.getMeas(range2); if(range < 10 || range2 < 10) out=1; if(leftEncoder.getPulses() == preLeft || rightEncoder.getPulses()== preRight) { motors.setMotor0Speed(0.4*127); //right motors.setMotor1Speed(0.4*127); //left } if(abs(leftEncoder.getPulses()) <1000 || abs(leftEncoder.getPulses())<1000) out=1; } motors.stopBothMotors(); wait(2); motors.begin(); preLeft=preRight=5000 ; leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(.25*127); //right motors.setMotor1Speed(.25*127); //left if(section == TOOLS || section == MID) { while(IR.getDistance() > 20 ) { //bt.printf("IR %f\r\n", IR.getDistance()); //bt.printf("third while left %d right %d \r\n", preLeft, preRight); } } else while((abs(leftEncoder.getPulses()) < 200 || abs(rightEncoder.getPulses())< 200)); motors.setMotor0Speed(-.25*127); //right motors.setMotor1Speed(-.25*127); //left wait_ms(10); motors.stopBothMotors(); wait(2); motors.begin(); } void tools_section(float* location, float ¤t) { wall_follow(LEFT,FORWARD, TOOLS); // current position in reference to the starting position current=(abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2; bt.printf("current %f \r\n",current); motors.stopBothMotors(); //Tool aquiring wait(2); while(1){ } // After tool is aquired alignWithWall(TOOLS); wait_ms(100); wall_follow2(LEFT,FORWARD,MID, current); current= 78; rangeFinderLeft.startMeas(); wait_ms(20); rangeFinderLeft.getMeas(range); if(range < 20) { wall_follow2(LEFT,BACKWARD,TOOLS, current); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(-MAX_SPEED); //right motors.setMotor1Speed(-MAX_SPEED); //left while(abs(leftEncoder.getPulses()) < 120 || abs(rightEncoder.getPulses())< 120); leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(MAX_SPEED); //right motors.setMotor1Speed(MAX_SPEED); //left while(abs(leftEncoder.getPulses()) < 40 || abs(rightEncoder.getPulses())< 40); motors.stopBothMotors(); wait_ms(500); location[0]= current- ((abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2); current= location[0]; leftTurn(); slightleft(); overBump(TOOLS); } else { location[0]= 77; leftTurn(); wait_ms(20); overBump(FIRST_WAVE); } bt.printf("First Wavegap = %f\r\n",location[0]); } void mid_section(float* location, float ¤t, int* direction) { motors.begin(); if(IR.getDistance() > 20) return; alignWithWall(MID); bt.printf("mid section current = %f\r\n",current); wall_follow2(LEFT,FORWARD,MID, current); current=((abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2); bt.printf("after wf2 current = %f\r\n",current); if(current != 0) { direction[0]= RIGHT; current+= location[0]; location[1]= current; } else { current=location[0]; direction[0]= LEFT; wall_follow2(LEFT,BACKWARD,MID,current); location[1]= location[0]- ((abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2); } bt.printf("wavegap2 = %f\r\n",location[1]); leftTurn(); overBump(TOOLS); // go forward leftEncoder.reset(); rightEncoder.reset(); motors.setMotor0Speed(0.2*127); //right motors.setMotor1Speed(0.2*127); //left while(abs(leftEncoder.getPulses())<300 || abs(rightEncoder.getPulses())<300); motors.stopBothMotors(); } void mid_section2(float* location, float ¤t, int* direction) { motors.begin(); if(IR.getDistance() > 20) return; alignWithWall(MID); wall_follow2(LEFT,FORWARD,MID, current); current=((abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2); if(current != 0) { direction[1]= RIGHT; current+= location[1]; location[2]= current; } else { current=location[1]; direction[1]= LEFT; wall_follow2(LEFT,BACKWARD,MID,current); location[2]= location[1]- ((abs(leftEncoder.getPulses()*11.12/PPR) + abs(rightEncoder.getPulses()*11.12/PPR))/2); } leftTurn(); overBump(RIGS); } void rig_section(float* location, float ¤t, int* direction, int rig) { }