wheelchair code for alexa integration
Fork of wheelchaircontrol by
wheelchair.cpp@8:381a4ec3fef8, 2018-07-22 (annotated)
- Committer:
- ryanlin97
- Date:
- Sun Jul 22 18:46:24 2018 +0000
- Revision:
- 8:381a4ec3fef8
- Parent:
- 7:5e38d43fbce3
- Child:
- 10:e5463c11e0a0
updated for mpu;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ryanlin97 | 0:fc0c4a184482 | 1 | #include "wheelchair.h" |
ryanlin97 | 1:c0beadca1617 | 2 | |
ryanlin97 | 8:381a4ec3fef8 | 3 | Wheelchair::Wheelchair(PinName xPin, PinName yPin, Serial* pc, Timer* time ) |
ryanlin97 | 1:c0beadca1617 | 4 | { |
ryanlin97 | 3:a5e71bfdb492 | 5 | x = new PwmOut(xPin); |
ryanlin97 | 3:a5e71bfdb492 | 6 | y = new PwmOut(yPin); |
ryanlin97 | 6:0cd57bdd8fbc | 7 | //imu = new chair_BNO055(); |
ryanlin97 | 7:5e38d43fbce3 | 8 | imu = new chair_MPU9250(pc, time); |
ryanlin97 | 7:5e38d43fbce3 | 9 | imu->setup(); |
ryanlin97 | 7:5e38d43fbce3 | 10 | out = pc; |
ryanlin97 | 7:5e38d43fbce3 | 11 | out->printf("wheelchair setup done \n"); |
ryanlin97 | 7:5e38d43fbce3 | 12 | |
ryanlin97 | 1:c0beadca1617 | 13 | } |
ryanlin97 | 6:0cd57bdd8fbc | 14 | |
ryanlin97 | 3:a5e71bfdb492 | 15 | /* |
ryanlin97 | 3:a5e71bfdb492 | 16 | * joystick has analog out of 200-700, scale values between 1.3 and 3.3 |
ryanlin97 | 3:a5e71bfdb492 | 17 | */ |
ryanlin97 | 3:a5e71bfdb492 | 18 | void Wheelchair::move(float x_coor, float y_coor) |
ryanlin97 | 1:c0beadca1617 | 19 | { |
ryanlin97 | 6:0cd57bdd8fbc | 20 | |
ryanlin97 | 4:29a27953fe70 | 21 | float scaled_x = ((x_coor * 1.6f) + 1.7f)/3.3f; |
ryanlin97 | 4:29a27953fe70 | 22 | float scaled_y = (3.3f - (y_coor * 1.6f))/3.3f; |
ryanlin97 | 4:29a27953fe70 | 23 | x->write(scaled_x); |
ryanlin97 | 4:29a27953fe70 | 24 | y->write(scaled_y); |
ryanlin97 | 1:c0beadca1617 | 25 | |
ryanlin97 | 5:e0ccaab3959a | 26 | } |
ryanlin97 | 1:c0beadca1617 | 27 | void Wheelchair::forward() |
ryanlin97 | 1:c0beadca1617 | 28 | { |
ryanlin97 | 0:fc0c4a184482 | 29 | x->write(high); |
ryanlin97 | 3:a5e71bfdb492 | 30 | y->write(def+offset); |
ryanlin97 | 0:fc0c4a184482 | 31 | } |
ryanlin97 | 0:fc0c4a184482 | 32 | |
ryanlin97 | 1:c0beadca1617 | 33 | void Wheelchair::backward() |
ryanlin97 | 1:c0beadca1617 | 34 | { |
ryanlin97 | 0:fc0c4a184482 | 35 | x->write(low); |
ryanlin97 | 0:fc0c4a184482 | 36 | y->write(def); |
ryanlin97 | 0:fc0c4a184482 | 37 | } |
ryanlin97 | 0:fc0c4a184482 | 38 | |
ryanlin97 | 1:c0beadca1617 | 39 | void Wheelchair::right() |
ryanlin97 | 1:c0beadca1617 | 40 | { |
ryanlin97 | 0:fc0c4a184482 | 41 | x->write(def); |
ryanlin97 | 0:fc0c4a184482 | 42 | y->write(high); |
ryanlin97 | 0:fc0c4a184482 | 43 | } |
ryanlin97 | 0:fc0c4a184482 | 44 | |
ryanlin97 | 1:c0beadca1617 | 45 | void Wheelchair::left() |
ryanlin97 | 1:c0beadca1617 | 46 | { |
ryanlin97 | 0:fc0c4a184482 | 47 | x->write(def); |
ryanlin97 | 0:fc0c4a184482 | 48 | y->write(low); |
ryanlin97 | 0:fc0c4a184482 | 49 | } |
ryanlin97 | 0:fc0c4a184482 | 50 | |
ryanlin97 | 1:c0beadca1617 | 51 | void Wheelchair::stop() |
ryanlin97 | 1:c0beadca1617 | 52 | { |
ryanlin97 | 0:fc0c4a184482 | 53 | x->write(def); |
ryanlin97 | 0:fc0c4a184482 | 54 | y->write(def); |
ryanlin97 | 6:0cd57bdd8fbc | 55 | } |
ryanlin97 | 8:381a4ec3fef8 | 56 | // counter clockwise is + |
ryanlin97 | 8:381a4ec3fef8 | 57 | // clockwise is - |
ryanlin97 | 6:0cd57bdd8fbc | 58 | |
ryanlin97 | 7:5e38d43fbce3 | 59 | void Wheelchair::turn_right() |
ryanlin97 | 6:0cd57bdd8fbc | 60 | { |
ryanlin97 | 8:381a4ec3fef8 | 61 | bool overturn = false; |
ryanlin97 | 7:5e38d43fbce3 | 62 | out->printf("turning right\n"); |
ryanlin97 | 7:5e38d43fbce3 | 63 | |
ryanlin97 | 6:0cd57bdd8fbc | 64 | double start = imu->yaw(); |
ryanlin97 | 8:381a4ec3fef8 | 65 | double final = start - 90; |
ryanlin97 | 8:381a4ec3fef8 | 66 | |
ryanlin97 | 8:381a4ec3fef8 | 67 | if(final < 0) { |
ryanlin97 | 8:381a4ec3fef8 | 68 | final += 360; |
ryanlin97 | 8:381a4ec3fef8 | 69 | overturn = true; |
ryanlin97 | 8:381a4ec3fef8 | 70 | } |
ryanlin97 | 8:381a4ec3fef8 | 71 | |
ryanlin97 | 8:381a4ec3fef8 | 72 | out->printf("start %f, final %f\n", start, final); |
ryanlin97 | 7:5e38d43fbce3 | 73 | |
ryanlin97 | 8:381a4ec3fef8 | 74 | double curr = 361; |
ryanlin97 | 8:381a4ec3fef8 | 75 | while(curr >= final) { |
ryanlin97 | 8:381a4ec3fef8 | 76 | Wheelchair::right(); |
ryanlin97 | 8:381a4ec3fef8 | 77 | if( out->readable()) { |
ryanlin97 | 8:381a4ec3fef8 | 78 | out->printf("stopped\n"); |
ryanlin97 | 8:381a4ec3fef8 | 79 | Wheelchair::stop(); |
ryanlin97 | 8:381a4ec3fef8 | 80 | return; |
ryanlin97 | 7:5e38d43fbce3 | 81 | } |
ryanlin97 | 8:381a4ec3fef8 | 82 | curr = imu->yaw(); |
ryanlin97 | 8:381a4ec3fef8 | 83 | //out->printf("curr %f \n", curr); |
ryanlin97 | 8:381a4ec3fef8 | 84 | |
ryanlin97 | 8:381a4ec3fef8 | 85 | if(overturn && curr >= 0 && curr <= start ) { |
ryanlin97 | 8:381a4ec3fef8 | 86 | curr = 360; |
ryanlin97 | 6:0cd57bdd8fbc | 87 | } |
ryanlin97 | 6:0cd57bdd8fbc | 88 | } |
ryanlin97 | 8:381a4ec3fef8 | 89 | |
ryanlin97 | 7:5e38d43fbce3 | 90 | out->printf("done turning\n"); |
ryanlin97 | 8:381a4ec3fef8 | 91 | |
ryanlin97 | 6:0cd57bdd8fbc | 92 | } |
ryanlin97 | 6:0cd57bdd8fbc | 93 | |
ryanlin97 | 6:0cd57bdd8fbc | 94 | void Wheelchair::turn_left() |
ryanlin97 | 6:0cd57bdd8fbc | 95 | { |
ryanlin97 | 8:381a4ec3fef8 | 96 | bool overturn = false; |
ryanlin97 | 8:381a4ec3fef8 | 97 | out->printf("turning left\n"); |
ryanlin97 | 8:381a4ec3fef8 | 98 | |
ryanlin97 | 6:0cd57bdd8fbc | 99 | double start = imu->yaw(); |
ryanlin97 | 8:381a4ec3fef8 | 100 | double final = start + 90; |
ryanlin97 | 8:381a4ec3fef8 | 101 | |
ryanlin97 | 8:381a4ec3fef8 | 102 | if(final > 360) { |
ryanlin97 | 8:381a4ec3fef8 | 103 | final -= 360; |
ryanlin97 | 8:381a4ec3fef8 | 104 | overturn = true; |
ryanlin97 | 8:381a4ec3fef8 | 105 | } |
ryanlin97 | 8:381a4ec3fef8 | 106 | |
ryanlin97 | 8:381a4ec3fef8 | 107 | out->printf("start %f, final %f\n", start, final); |
ryanlin97 | 6:0cd57bdd8fbc | 108 | |
ryanlin97 | 8:381a4ec3fef8 | 109 | double curr = -1; |
ryanlin97 | 8:381a4ec3fef8 | 110 | while(curr <= final) { |
ryanlin97 | 6:0cd57bdd8fbc | 111 | Wheelchair::left(); |
ryanlin97 | 8:381a4ec3fef8 | 112 | if( out->readable()) { |
ryanlin97 | 8:381a4ec3fef8 | 113 | out->printf("stopped\n"); |
ryanlin97 | 8:381a4ec3fef8 | 114 | Wheelchair::stop(); |
ryanlin97 | 8:381a4ec3fef8 | 115 | return; |
ryanlin97 | 8:381a4ec3fef8 | 116 | } |
ryanlin97 | 8:381a4ec3fef8 | 117 | curr = imu->yaw(); |
ryanlin97 | 8:381a4ec3fef8 | 118 | if(overturn && curr > (360 - 90) ) { |
ryanlin97 | 8:381a4ec3fef8 | 119 | curr = 0; |
ryanlin97 | 8:381a4ec3fef8 | 120 | } |
ryanlin97 | 8:381a4ec3fef8 | 121 | out->printf("curr %f \n", curr); |
ryanlin97 | 6:0cd57bdd8fbc | 122 | } |
ryanlin97 | 8:381a4ec3fef8 | 123 | |
ryanlin97 | 8:381a4ec3fef8 | 124 | out->printf("done turning\n"); |
ryanlin97 | 6:0cd57bdd8fbc | 125 | } |
ryanlin97 | 8:381a4ec3fef8 | 126 |