David's dead reckoning code for the LVBots competition on March 6th. Uses the mbed LPC1768, DRV8835, QTR-3RC, and two DC motors with encoders.
Dependencies: PololuEncoder Pacer mbed GeneralDebouncer
main.cpp@40:6fa672be85ec, 2019-07-25 (annotated)
- Committer:
- DavidEGrayson
- Date:
- Thu Jul 25 02:53:34 2019 +0000
- Revision:
- 40:6fa672be85ec
- Parent:
- 39:b19dfc5d4d4b
- Child:
- 41:3ead1dd2cc3a
Add TurnSensor and L3G code but I am not happy with how the Gyro drifts a degree every few seconds or so.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DavidEGrayson | 0:e77a0edb9878 | 1 | #include <mbed.h> |
DavidEGrayson | 8:78b1ff957cba | 2 | #include <Pacer.h> |
DavidEGrayson | 21:c279c6a83671 | 3 | #include <GeneralDebouncer.h> |
DavidEGrayson | 19:a11ffc903774 | 4 | #include <math.h> |
DavidEGrayson | 0:e77a0edb9878 | 5 | |
DavidEGrayson | 21:c279c6a83671 | 6 | #include "main.h" |
DavidEGrayson | 8:78b1ff957cba | 7 | #include "motors.h" |
DavidEGrayson | 8:78b1ff957cba | 8 | #include "encoders.h" |
DavidEGrayson | 9:9734347b5756 | 9 | #include "leds.h" |
DavidEGrayson | 8:78b1ff957cba | 10 | #include "pc_serial.h" |
DavidEGrayson | 9:9734347b5756 | 11 | #include "test.h" |
DavidEGrayson | 12:835a4d24ae3b | 12 | #include "reckoner.h" |
DavidEGrayson | 16:8eaa5bc2bdb1 | 13 | #include "buttons.h" |
DavidEGrayson | 21:c279c6a83671 | 14 | #include "line_tracker.h" |
DavidEGrayson | 40:6fa672be85ec | 15 | #include "l3g.h" |
DavidEGrayson | 40:6fa672be85ec | 16 | #include "turn_sensor.h" |
DavidEGrayson | 21:c279c6a83671 | 17 | |
DavidEGrayson | 21:c279c6a83671 | 18 | Reckoner reckoner; |
DavidEGrayson | 21:c279c6a83671 | 19 | LineTracker lineTracker; |
DavidEGrayson | 40:6fa672be85ec | 20 | TurnSensor turnSensor; |
DavidEGrayson | 37:23000a47ed2b | 21 | Logger logger; |
DavidEGrayson | 40:6fa672be85ec | 22 | |
DavidEGrayson | 40:6fa672be85ec | 23 | uint32_t totalEncoderCounts = 0; |
DavidEGrayson | 40:6fa672be85ec | 24 | uint32_t nextLogEncoderCount = 0; |
DavidEGrayson | 40:6fa672be85ec | 25 | const uint32_t logSpacing = 100; |
DavidEGrayson | 21:c279c6a83671 | 26 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 27 | const int16_t drivingSpeed = 400; |
DavidEGrayson | 21:c279c6a83671 | 28 | |
DavidEGrayson | 21:c279c6a83671 | 29 | void setLeds(bool v1, bool v2, bool v3, bool v4) |
DavidEGrayson | 21:c279c6a83671 | 30 | { |
DavidEGrayson | 21:c279c6a83671 | 31 | led1 = v1; |
DavidEGrayson | 21:c279c6a83671 | 32 | led2 = v2; |
DavidEGrayson | 21:c279c6a83671 | 33 | led3 = v3; |
DavidEGrayson | 21:c279c6a83671 | 34 | led4 = v4; |
DavidEGrayson | 21:c279c6a83671 | 35 | } |
DavidEGrayson | 0:e77a0edb9878 | 36 | |
DavidEGrayson | 10:e4dd36148539 | 37 | int __attribute__((noreturn)) main() |
DavidEGrayson | 2:968338353aef | 38 | { |
DavidEGrayson | 2:968338353aef | 39 | pc.baud(115200); |
DavidEGrayson | 2:968338353aef | 40 | |
DavidEGrayson | 40:6fa672be85ec | 41 | if (l3gInit()) |
DavidEGrayson | 40:6fa672be85ec | 42 | { |
DavidEGrayson | 40:6fa672be85ec | 43 | // Error initializing the gyro. |
DavidEGrayson | 40:6fa672be85ec | 44 | setLeds(0, 0, 1, 1); |
DavidEGrayson | 40:6fa672be85ec | 45 | while(1); |
DavidEGrayson | 40:6fa672be85ec | 46 | } |
DavidEGrayson | 40:6fa672be85ec | 47 | |
DavidEGrayson | 2:968338353aef | 48 | // Enable pull-ups on encoder pins and give them a chance to settle. |
DavidEGrayson | 9:9734347b5756 | 49 | encodersInit(); |
DavidEGrayson | 9:9734347b5756 | 50 | motorsInit(); |
DavidEGrayson | 16:8eaa5bc2bdb1 | 51 | buttonsInit(); |
DavidEGrayson | 4:1b20a11765c8 | 52 | |
DavidEGrayson | 8:78b1ff957cba | 53 | // Test routines |
DavidEGrayson | 9:9734347b5756 | 54 | //testMotors(); |
DavidEGrayson | 10:e4dd36148539 | 55 | //testEncoders(); |
DavidEGrayson | 39:b19dfc5d4d4b | 56 | //testMotorSpeed(); |
DavidEGrayson | 32:83a13b06093c | 57 | //testLineSensors(); |
DavidEGrayson | 40:6fa672be85ec | 58 | //testL3g(); |
DavidEGrayson | 40:6fa672be85ec | 59 | testTurnSensor(); |
DavidEGrayson | 16:8eaa5bc2bdb1 | 60 | //testReckoner(); |
DavidEGrayson | 17:2df9861f53ee | 61 | //testButtons(); |
DavidEGrayson | 34:6c84680d823a | 62 | //testDriveHome(); |
DavidEGrayson | 21:c279c6a83671 | 63 | //testFinalSettleIn(); |
DavidEGrayson | 23:aae5cbe3b924 | 64 | //testCalibrate(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 65 | //testLineFollowing(); |
DavidEGrayson | 29:cfcf08d8ac79 | 66 | //testAnalog(); |
DavidEGrayson | 31:739b91331f31 | 67 | //testSensorGlitches(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 68 | //testTurnInPlace(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 69 | //testCloseness(); |
DavidEGrayson | 37:23000a47ed2b | 70 | //testLogger(); |
DavidEGrayson | 37:23000a47ed2b | 71 | |
DavidEGrayson | 2:968338353aef | 72 | |
DavidEGrayson | 21:c279c6a83671 | 73 | // Real routines for the contest. |
DavidEGrayson | 28:4374035df5e0 | 74 | loadCalibration(); |
DavidEGrayson | 28:4374035df5e0 | 75 | |
DavidEGrayson | 21:c279c6a83671 | 76 | setLeds(1, 0, 0, 0); |
DavidEGrayson | 21:c279c6a83671 | 77 | waitForSignalToStart(); |
DavidEGrayson | 25:73c2eedb3b91 | 78 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 79 | setLeds(0, 1, 0, 0); |
DavidEGrayson | 28:4374035df5e0 | 80 | findLine(); |
DavidEGrayson | 25:73c2eedb3b91 | 81 | |
DavidEGrayson | 27:2456f68be679 | 82 | //setLeds(1, 1, 0, 0); |
DavidEGrayson | 27:2456f68be679 | 83 | //turnRightToFindLine(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 84 | |
DavidEGrayson | 21:c279c6a83671 | 85 | setLeds(0, 0, 1, 0); |
DavidEGrayson | 21:c279c6a83671 | 86 | followLineToEnd(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 87 | |
DavidEGrayson | 21:c279c6a83671 | 88 | setLeds(1, 0, 1, 0); |
DavidEGrayson | 21:c279c6a83671 | 89 | driveHomeAlmost(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 90 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 91 | //setLeds(0, 1, 1, 0); |
DavidEGrayson | 33:58a0ab6e9ad2 | 92 | //finalSettleIn(); |
DavidEGrayson | 33:58a0ab6e9ad2 | 93 | |
DavidEGrayson | 21:c279c6a83671 | 94 | setLeds(1, 1, 1, 1); |
DavidEGrayson | 37:23000a47ed2b | 95 | loggerReportLoop(); |
DavidEGrayson | 37:23000a47ed2b | 96 | } |
DavidEGrayson | 37:23000a47ed2b | 97 | |
DavidEGrayson | 37:23000a47ed2b | 98 | void loggerService() |
DavidEGrayson | 37:23000a47ed2b | 99 | { |
DavidEGrayson | 40:6fa672be85ec | 100 | if (totalEncoderCounts > nextLogEncoderCount) |
DavidEGrayson | 37:23000a47ed2b | 101 | { |
DavidEGrayson | 40:6fa672be85ec | 102 | nextLogEncoderCount += logSpacing; |
DavidEGrayson | 40:6fa672be85ec | 103 | |
DavidEGrayson | 40:6fa672be85ec | 104 | struct LogEntry entry; |
DavidEGrayson | 40:6fa672be85ec | 105 | entry.turnAngle = turnSensor.getAngle() >> 16; |
DavidEGrayson | 40:6fa672be85ec | 106 | entry.x = reckoner.x >> 16; |
DavidEGrayson | 40:6fa672be85ec | 107 | entry.y = reckoner.y >> 16; |
DavidEGrayson | 40:6fa672be85ec | 108 | logger.log(&entry); |
DavidEGrayson | 37:23000a47ed2b | 109 | } |
DavidEGrayson | 0:e77a0edb9878 | 110 | } |
DavidEGrayson | 12:835a4d24ae3b | 111 | |
DavidEGrayson | 37:23000a47ed2b | 112 | void loggerReportLoop() |
DavidEGrayson | 37:23000a47ed2b | 113 | { |
DavidEGrayson | 37:23000a47ed2b | 114 | while(1) |
DavidEGrayson | 37:23000a47ed2b | 115 | { |
DavidEGrayson | 37:23000a47ed2b | 116 | if(button1DefinitelyPressed()) |
DavidEGrayson | 37:23000a47ed2b | 117 | { |
DavidEGrayson | 37:23000a47ed2b | 118 | logger.dump(); |
DavidEGrayson | 37:23000a47ed2b | 119 | } |
DavidEGrayson | 37:23000a47ed2b | 120 | } |
DavidEGrayson | 37:23000a47ed2b | 121 | } |
DavidEGrayson | 37:23000a47ed2b | 122 | |
DavidEGrayson | 37:23000a47ed2b | 123 | |
DavidEGrayson | 28:4374035df5e0 | 124 | void loadCalibration() |
DavidEGrayson | 28:4374035df5e0 | 125 | { |
DavidEGrayson | 32:83a13b06093c | 126 | /** QTR-3RC **/ |
DavidEGrayson | 32:83a13b06093c | 127 | lineTracker.calibratedMinimum[0] = 100; |
DavidEGrayson | 32:83a13b06093c | 128 | lineTracker.calibratedMinimum[1] = 94; |
DavidEGrayson | 32:83a13b06093c | 129 | lineTracker.calibratedMinimum[2] = 103; |
DavidEGrayson | 32:83a13b06093c | 130 | lineTracker.calibratedMaximum[0] = 792; |
DavidEGrayson | 32:83a13b06093c | 131 | lineTracker.calibratedMaximum[1] = 807; |
DavidEGrayson | 32:83a13b06093c | 132 | lineTracker.calibratedMaximum[2] = 1000; |
DavidEGrayson | 32:83a13b06093c | 133 | |
DavidEGrayson | 32:83a13b06093c | 134 | /** QTR-3A |
DavidEGrayson | 28:4374035df5e0 | 135 | lineTracker.calibratedMinimum[0] = 34872; |
DavidEGrayson | 28:4374035df5e0 | 136 | lineTracker.calibratedMinimum[1] = 29335; |
DavidEGrayson | 28:4374035df5e0 | 137 | lineTracker.calibratedMinimum[2] = 23845; |
DavidEGrayson | 28:4374035df5e0 | 138 | lineTracker.calibratedMaximum[0] = 59726; |
DavidEGrayson | 28:4374035df5e0 | 139 | lineTracker.calibratedMaximum[1] = 60110; |
DavidEGrayson | 32:83a13b06093c | 140 | lineTracker.calibratedMaximum[2] = 58446; |
DavidEGrayson | 32:83a13b06093c | 141 | **/ |
DavidEGrayson | 28:4374035df5e0 | 142 | } |
DavidEGrayson | 28:4374035df5e0 | 143 | |
DavidEGrayson | 12:835a4d24ae3b | 144 | void updateReckonerFromEncoders() |
DavidEGrayson | 12:835a4d24ae3b | 145 | { |
DavidEGrayson | 12:835a4d24ae3b | 146 | while(encoderBuffer.hasEvents()) |
DavidEGrayson | 12:835a4d24ae3b | 147 | { |
DavidEGrayson | 12:835a4d24ae3b | 148 | PololuEncoderEvent event = encoderBuffer.readEvent(); |
DavidEGrayson | 12:835a4d24ae3b | 149 | switch(event) |
DavidEGrayson | 12:835a4d24ae3b | 150 | { |
DavidEGrayson | 17:2df9861f53ee | 151 | case ENCODER_LEFT | POLOLU_ENCODER_EVENT_INC: |
DavidEGrayson | 17:2df9861f53ee | 152 | reckoner.handleTickLeftForward(); |
DavidEGrayson | 40:6fa672be85ec | 153 | totalEncoderCounts++; |
DavidEGrayson | 17:2df9861f53ee | 154 | break; |
DavidEGrayson | 17:2df9861f53ee | 155 | case ENCODER_LEFT | POLOLU_ENCODER_EVENT_DEC: |
DavidEGrayson | 17:2df9861f53ee | 156 | reckoner.handleTickLeftBackward(); |
DavidEGrayson | 40:6fa672be85ec | 157 | totalEncoderCounts--; |
DavidEGrayson | 17:2df9861f53ee | 158 | break; |
DavidEGrayson | 17:2df9861f53ee | 159 | case ENCODER_RIGHT | POLOLU_ENCODER_EVENT_INC: |
DavidEGrayson | 17:2df9861f53ee | 160 | reckoner.handleTickRightForward(); |
DavidEGrayson | 40:6fa672be85ec | 161 | totalEncoderCounts++; |
DavidEGrayson | 17:2df9861f53ee | 162 | break; |
DavidEGrayson | 17:2df9861f53ee | 163 | case ENCODER_RIGHT | POLOLU_ENCODER_EVENT_DEC: |
DavidEGrayson | 17:2df9861f53ee | 164 | reckoner.handleTickRightBackward(); |
DavidEGrayson | 40:6fa672be85ec | 165 | totalEncoderCounts--; |
DavidEGrayson | 17:2df9861f53ee | 166 | break; |
DavidEGrayson | 12:835a4d24ae3b | 167 | } |
DavidEGrayson | 12:835a4d24ae3b | 168 | } |
DavidEGrayson | 12:835a4d24ae3b | 169 | } |
DavidEGrayson | 17:2df9861f53ee | 170 | |
DavidEGrayson | 19:a11ffc903774 | 171 | float magnitude() |
DavidEGrayson | 19:a11ffc903774 | 172 | { |
DavidEGrayson | 19:a11ffc903774 | 173 | return sqrt((float)reckoner.x * reckoner.x + (float)reckoner.y * reckoner.y); |
DavidEGrayson | 19:a11ffc903774 | 174 | } |
DavidEGrayson | 19:a11ffc903774 | 175 | |
DavidEGrayson | 20:dbec34f0e76b | 176 | float dotProduct() |
DavidEGrayson | 20:dbec34f0e76b | 177 | { |
DavidEGrayson | 20:dbec34f0e76b | 178 | float s = (float)reckoner.sin / (1 << 30); |
DavidEGrayson | 20:dbec34f0e76b | 179 | float c = (float)reckoner.cos / (1 << 30); |
DavidEGrayson | 20:dbec34f0e76b | 180 | float magn = magnitude(); |
DavidEGrayson | 20:dbec34f0e76b | 181 | if (magn == 0){ return 0; } |
DavidEGrayson | 20:dbec34f0e76b | 182 | return ((float)reckoner.x * c + (float)reckoner.y * s) / magn; |
DavidEGrayson | 20:dbec34f0e76b | 183 | } |
DavidEGrayson | 20:dbec34f0e76b | 184 | |
DavidEGrayson | 18:b65fbb795396 | 185 | // The closer this is to zero, the closer we are to pointing towards the home position. |
DavidEGrayson | 18:b65fbb795396 | 186 | // It is basically a cross product of the two vectors (x, y) and (cos, sin). |
DavidEGrayson | 19:a11ffc903774 | 187 | float determinant() |
DavidEGrayson | 18:b65fbb795396 | 188 | { |
DavidEGrayson | 18:b65fbb795396 | 189 | // TODO: get rid of the magic numbers here (i.e. 30) |
DavidEGrayson | 18:b65fbb795396 | 190 | float s = (float)reckoner.sin / (1 << 30); |
DavidEGrayson | 18:b65fbb795396 | 191 | float c = (float)reckoner.cos / (1 << 30); |
DavidEGrayson | 19:a11ffc903774 | 192 | return (reckoner.x * s - reckoner.y * c) / magnitude(); |
DavidEGrayson | 19:a11ffc903774 | 193 | } |
DavidEGrayson | 19:a11ffc903774 | 194 | |
DavidEGrayson | 21:c279c6a83671 | 195 | int16_t reduceSpeed(int16_t speed, int32_t reduction) |
DavidEGrayson | 19:a11ffc903774 | 196 | { |
DavidEGrayson | 19:a11ffc903774 | 197 | if (reduction > speed) |
DavidEGrayson | 19:a11ffc903774 | 198 | { |
DavidEGrayson | 19:a11ffc903774 | 199 | return 0; |
DavidEGrayson | 19:a11ffc903774 | 200 | } |
DavidEGrayson | 19:a11ffc903774 | 201 | else |
DavidEGrayson | 19:a11ffc903774 | 202 | { |
DavidEGrayson | 19:a11ffc903774 | 203 | return speed - reduction; |
DavidEGrayson | 19:a11ffc903774 | 204 | } |
DavidEGrayson | 18:b65fbb795396 | 205 | } |
DavidEGrayson | 18:b65fbb795396 | 206 | |
DavidEGrayson | 21:c279c6a83671 | 207 | void waitForSignalToStart() |
DavidEGrayson | 21:c279c6a83671 | 208 | { |
DavidEGrayson | 21:c279c6a83671 | 209 | while(!button1DefinitelyPressed()) |
DavidEGrayson | 21:c279c6a83671 | 210 | { |
DavidEGrayson | 21:c279c6a83671 | 211 | updateReckonerFromEncoders(); |
DavidEGrayson | 38:5e93a479c244 | 212 | } |
DavidEGrayson | 21:c279c6a83671 | 213 | reckoner.reset(); |
DavidEGrayson | 38:5e93a479c244 | 214 | while(button1DefinitelyPressed()) |
DavidEGrayson | 38:5e93a479c244 | 215 | { |
DavidEGrayson | 38:5e93a479c244 | 216 | updateReckonerFromEncoders(); |
DavidEGrayson | 38:5e93a479c244 | 217 | } |
DavidEGrayson | 38:5e93a479c244 | 218 | wait(0.2); |
DavidEGrayson | 21:c279c6a83671 | 219 | } |
DavidEGrayson | 21:c279c6a83671 | 220 | |
DavidEGrayson | 24:fc01d9125d3b | 221 | // Keep the robot pointing the in the right direction (1, 0). |
DavidEGrayson | 24:fc01d9125d3b | 222 | // This should basically keep it going straight. |
DavidEGrayson | 24:fc01d9125d3b | 223 | void updateMotorsToDriveStraight() |
DavidEGrayson | 24:fc01d9125d3b | 224 | { |
DavidEGrayson | 24:fc01d9125d3b | 225 | const int32_t straightDriveStrength = 1000; |
DavidEGrayson | 24:fc01d9125d3b | 226 | int16_t speedLeft = drivingSpeed; |
DavidEGrayson | 24:fc01d9125d3b | 227 | int16_t speedRight = drivingSpeed; |
DavidEGrayson | 24:fc01d9125d3b | 228 | int32_t reduction = reckoner.sin / (1<<15) * straightDriveStrength / (1 << 15); |
DavidEGrayson | 24:fc01d9125d3b | 229 | if (reduction > 0) |
DavidEGrayson | 24:fc01d9125d3b | 230 | { |
DavidEGrayson | 24:fc01d9125d3b | 231 | speedRight = reduceSpeed(speedRight, reduction); |
DavidEGrayson | 24:fc01d9125d3b | 232 | } |
DavidEGrayson | 24:fc01d9125d3b | 233 | else |
DavidEGrayson | 24:fc01d9125d3b | 234 | { |
DavidEGrayson | 24:fc01d9125d3b | 235 | speedLeft = reduceSpeed(speedLeft, -reduction); |
DavidEGrayson | 24:fc01d9125d3b | 236 | } |
DavidEGrayson | 24:fc01d9125d3b | 237 | motorsSpeedSet(speedLeft, speedRight); |
DavidEGrayson | 24:fc01d9125d3b | 238 | } |
DavidEGrayson | 24:fc01d9125d3b | 239 | |
DavidEGrayson | 28:4374035df5e0 | 240 | void updateMotorsToFollowLine() |
DavidEGrayson | 24:fc01d9125d3b | 241 | { |
DavidEGrayson | 34:6c84680d823a | 242 | const int followLineStrength = drivingSpeed * 5 / 4; |
DavidEGrayson | 28:4374035df5e0 | 243 | |
DavidEGrayson | 28:4374035df5e0 | 244 | int16_t speedLeft = drivingSpeed; |
DavidEGrayson | 28:4374035df5e0 | 245 | int16_t speedRight = drivingSpeed; |
DavidEGrayson | 28:4374035df5e0 | 246 | int16_t reduction = (lineTracker.getLinePosition() - 1000) * followLineStrength / 1000; |
DavidEGrayson | 28:4374035df5e0 | 247 | if(reduction < 0) |
DavidEGrayson | 28:4374035df5e0 | 248 | { |
DavidEGrayson | 28:4374035df5e0 | 249 | speedLeft = reduceSpeed(speedLeft, -reduction); |
DavidEGrayson | 28:4374035df5e0 | 250 | } |
DavidEGrayson | 28:4374035df5e0 | 251 | else |
DavidEGrayson | 28:4374035df5e0 | 252 | { |
DavidEGrayson | 28:4374035df5e0 | 253 | speedRight = reduceSpeed(speedRight, reduction); |
DavidEGrayson | 28:4374035df5e0 | 254 | } |
DavidEGrayson | 24:fc01d9125d3b | 255 | |
DavidEGrayson | 28:4374035df5e0 | 256 | motorsSpeedSet(speedLeft, speedRight); |
DavidEGrayson | 28:4374035df5e0 | 257 | } |
DavidEGrayson | 28:4374035df5e0 | 258 | |
DavidEGrayson | 28:4374035df5e0 | 259 | void findLine() |
DavidEGrayson | 28:4374035df5e0 | 260 | { |
DavidEGrayson | 24:fc01d9125d3b | 261 | GeneralDebouncer lineStatus(10000); |
DavidEGrayson | 24:fc01d9125d3b | 262 | while(1) |
DavidEGrayson | 24:fc01d9125d3b | 263 | { |
DavidEGrayson | 24:fc01d9125d3b | 264 | lineTracker.read(); |
DavidEGrayson | 24:fc01d9125d3b | 265 | lineTracker.updateCalibration(); |
DavidEGrayson | 24:fc01d9125d3b | 266 | updateReckonerFromEncoders(); |
DavidEGrayson | 37:23000a47ed2b | 267 | loggerService(); |
DavidEGrayson | 37:23000a47ed2b | 268 | updateMotorsToDriveStraight(); |
DavidEGrayson | 24:fc01d9125d3b | 269 | lineStatus.update(lineTracker.getLineVisible()); |
DavidEGrayson | 24:fc01d9125d3b | 270 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 271 | if(lineStatus.getState() == true && lineStatus.getTimeInCurrentStateMicroseconds() > 20000) |
DavidEGrayson | 24:fc01d9125d3b | 272 | { |
DavidEGrayson | 26:7e7c376a7446 | 273 | break; |
DavidEGrayson | 24:fc01d9125d3b | 274 | } |
DavidEGrayson | 24:fc01d9125d3b | 275 | } |
DavidEGrayson | 24:fc01d9125d3b | 276 | } |
DavidEGrayson | 20:dbec34f0e76b | 277 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 278 | /** |
DavidEGrayson | 21:c279c6a83671 | 279 | void turnRightToFindLine() |
DavidEGrayson | 21:c279c6a83671 | 280 | { |
DavidEGrayson | 21:c279c6a83671 | 281 | while(1) |
DavidEGrayson | 21:c279c6a83671 | 282 | { |
DavidEGrayson | 21:c279c6a83671 | 283 | lineTracker.read(); |
DavidEGrayson | 21:c279c6a83671 | 284 | lineTracker.updateCalibration(); |
DavidEGrayson | 21:c279c6a83671 | 285 | updateReckonerFromEncoders(); |
DavidEGrayson | 21:c279c6a83671 | 286 | |
DavidEGrayson | 21:c279c6a83671 | 287 | if(lineTracker.getLineVisible()) |
DavidEGrayson | 21:c279c6a83671 | 288 | { |
DavidEGrayson | 21:c279c6a83671 | 289 | break; |
DavidEGrayson | 21:c279c6a83671 | 290 | } |
DavidEGrayson | 21:c279c6a83671 | 291 | |
DavidEGrayson | 21:c279c6a83671 | 292 | motorsSpeedSet(300, 100); |
DavidEGrayson | 21:c279c6a83671 | 293 | } |
DavidEGrayson | 33:58a0ab6e9ad2 | 294 | }**/ |
DavidEGrayson | 21:c279c6a83671 | 295 | |
DavidEGrayson | 21:c279c6a83671 | 296 | void followLineToEnd() |
DavidEGrayson | 21:c279c6a83671 | 297 | { |
DavidEGrayson | 26:7e7c376a7446 | 298 | Timer timer; |
DavidEGrayson | 26:7e7c376a7446 | 299 | timer.start(); |
DavidEGrayson | 26:7e7c376a7446 | 300 | |
DavidEGrayson | 21:c279c6a83671 | 301 | GeneralDebouncer lineStatus(10000); |
DavidEGrayson | 34:6c84680d823a | 302 | const uint32_t lineDebounceTime = 1000000; |
DavidEGrayson | 21:c279c6a83671 | 303 | |
DavidEGrayson | 21:c279c6a83671 | 304 | while(1) |
DavidEGrayson | 21:c279c6a83671 | 305 | { |
DavidEGrayson | 21:c279c6a83671 | 306 | lineTracker.read(); |
DavidEGrayson | 21:c279c6a83671 | 307 | updateReckonerFromEncoders(); |
DavidEGrayson | 37:23000a47ed2b | 308 | loggerService(); |
DavidEGrayson | 21:c279c6a83671 | 309 | |
DavidEGrayson | 21:c279c6a83671 | 310 | lineStatus.update(lineTracker.getLineVisible()); |
DavidEGrayson | 21:c279c6a83671 | 311 | |
DavidEGrayson | 21:c279c6a83671 | 312 | bool lostLine = lineStatus.getState() == false && |
DavidEGrayson | 26:7e7c376a7446 | 313 | lineStatus.getTimeInCurrentStateMicroseconds() > lineDebounceTime; |
DavidEGrayson | 28:4374035df5e0 | 314 | if(lostLine && timer.read_us() >= 2000000) |
DavidEGrayson | 21:c279c6a83671 | 315 | { |
DavidEGrayson | 21:c279c6a83671 | 316 | break; |
DavidEGrayson | 21:c279c6a83671 | 317 | } |
DavidEGrayson | 21:c279c6a83671 | 318 | |
DavidEGrayson | 28:4374035df5e0 | 319 | updateMotorsToFollowLine(); |
DavidEGrayson | 21:c279c6a83671 | 320 | } |
DavidEGrayson | 20:dbec34f0e76b | 321 | } |
DavidEGrayson | 20:dbec34f0e76b | 322 | |
DavidEGrayson | 20:dbec34f0e76b | 323 | void driveHomeAlmost() |
DavidEGrayson | 18:b65fbb795396 | 324 | { |
DavidEGrayson | 18:b65fbb795396 | 325 | Timer timer; |
DavidEGrayson | 18:b65fbb795396 | 326 | timer.start(); |
DavidEGrayson | 19:a11ffc903774 | 327 | |
DavidEGrayson | 19:a11ffc903774 | 328 | while(1) |
DavidEGrayson | 18:b65fbb795396 | 329 | { |
DavidEGrayson | 18:b65fbb795396 | 330 | updateReckonerFromEncoders(); |
DavidEGrayson | 37:23000a47ed2b | 331 | loggerService(); |
DavidEGrayson | 37:23000a47ed2b | 332 | |
DavidEGrayson | 19:a11ffc903774 | 333 | float magn = magnitude(); |
DavidEGrayson | 19:a11ffc903774 | 334 | |
DavidEGrayson | 33:58a0ab6e9ad2 | 335 | if (magn < (1<<(14+7))) |
DavidEGrayson | 18:b65fbb795396 | 336 | { |
DavidEGrayson | 33:58a0ab6e9ad2 | 337 | // We are within 128 encoder ticks, so go to the next step. |
DavidEGrayson | 19:a11ffc903774 | 338 | break; |
DavidEGrayson | 19:a11ffc903774 | 339 | } |
DavidEGrayson | 19:a11ffc903774 | 340 | |
DavidEGrayson | 19:a11ffc903774 | 341 | float det = determinant(); |
DavidEGrayson | 19:a11ffc903774 | 342 | |
DavidEGrayson | 21:c279c6a83671 | 343 | int16_t speedLeft = drivingSpeed; |
DavidEGrayson | 21:c279c6a83671 | 344 | int16_t speedRight = drivingSpeed; |
DavidEGrayson | 33:58a0ab6e9ad2 | 345 | if (magn < (1<<(14+9))) // Within 512 encoder ticks of the origin, so slow down. |
DavidEGrayson | 18:b65fbb795396 | 346 | { |
DavidEGrayson | 33:58a0ab6e9ad2 | 347 | int16_t reduction = (1 - magn/(1<<(14+8))) * (drivingSpeed/2); |
DavidEGrayson | 19:a11ffc903774 | 348 | speedLeft = reduceSpeed(speedLeft, reduction); |
DavidEGrayson | 19:a11ffc903774 | 349 | speedRight = reduceSpeed(speedRight, reduction); |
DavidEGrayson | 19:a11ffc903774 | 350 | } |
DavidEGrayson | 19:a11ffc903774 | 351 | |
DavidEGrayson | 19:a11ffc903774 | 352 | if (det > 0) |
DavidEGrayson | 19:a11ffc903774 | 353 | { |
DavidEGrayson | 19:a11ffc903774 | 354 | speedLeft = reduceSpeed(speedLeft, det * 1000); |
DavidEGrayson | 18:b65fbb795396 | 355 | } |
DavidEGrayson | 18:b65fbb795396 | 356 | else |
DavidEGrayson | 18:b65fbb795396 | 357 | { |
DavidEGrayson | 19:a11ffc903774 | 358 | speedRight = reduceSpeed(speedRight, -det * 1000); |
DavidEGrayson | 18:b65fbb795396 | 359 | } |
DavidEGrayson | 19:a11ffc903774 | 360 | motorsSpeedSet(speedLeft, speedRight); |
DavidEGrayson | 18:b65fbb795396 | 361 | } |
DavidEGrayson | 18:b65fbb795396 | 362 | |
DavidEGrayson | 20:dbec34f0e76b | 363 | motorsSpeedSet(0, 0); |
DavidEGrayson | 20:dbec34f0e76b | 364 | } |
DavidEGrayson | 20:dbec34f0e76b | 365 | |
DavidEGrayson | 20:dbec34f0e76b | 366 | void finalSettleIn() |
DavidEGrayson | 20:dbec34f0e76b | 367 | { |
DavidEGrayson | 27:2456f68be679 | 368 | const int16_t settleSpeed = 300; |
DavidEGrayson | 27:2456f68be679 | 369 | const int16_t settleModificationStrength = 150; |
DavidEGrayson | 20:dbec34f0e76b | 370 | |
DavidEGrayson | 20:dbec34f0e76b | 371 | Timer timer; |
DavidEGrayson | 20:dbec34f0e76b | 372 | timer.start(); |
DavidEGrayson | 20:dbec34f0e76b | 373 | |
DavidEGrayson | 20:dbec34f0e76b | 374 | // State 0: rotating |
DavidEGrayson | 20:dbec34f0e76b | 375 | // State 1: Trying to get into final orientation: want [cos, sin] == [1<<30, 0]. |
DavidEGrayson | 20:dbec34f0e76b | 376 | uint8_t state = 0; |
DavidEGrayson | 20:dbec34f0e76b | 377 | |
DavidEGrayson | 27:2456f68be679 | 378 | Pacer reportPacer(200000); |
DavidEGrayson | 27:2456f68be679 | 379 | Pacer motorUpdatePacer(10000); |
DavidEGrayson | 21:c279c6a83671 | 380 | |
DavidEGrayson | 27:2456f68be679 | 381 | float integral = 0; |
DavidEGrayson | 27:2456f68be679 | 382 | |
DavidEGrayson | 27:2456f68be679 | 383 | motorsSpeedSet(-settleSpeed, settleSpeed); // avoid waiting 10 ms before we start settling |
DavidEGrayson | 27:2456f68be679 | 384 | |
DavidEGrayson | 19:a11ffc903774 | 385 | while(1) |
DavidEGrayson | 19:a11ffc903774 | 386 | { |
DavidEGrayson | 27:2456f68be679 | 387 | led1 = (state == 1); |
DavidEGrayson | 27:2456f68be679 | 388 | |
DavidEGrayson | 20:dbec34f0e76b | 389 | updateReckonerFromEncoders(); |
DavidEGrayson | 37:23000a47ed2b | 390 | loggerService(); |
DavidEGrayson | 37:23000a47ed2b | 391 | |
DavidEGrayson | 20:dbec34f0e76b | 392 | float dot = dotProduct(); |
DavidEGrayson | 20:dbec34f0e76b | 393 | int16_t speedModification = -dot * settleModificationStrength; |
DavidEGrayson | 20:dbec34f0e76b | 394 | if (speedModification > settleModificationStrength) |
DavidEGrayson | 20:dbec34f0e76b | 395 | { |
DavidEGrayson | 20:dbec34f0e76b | 396 | speedModification = settleModificationStrength; |
DavidEGrayson | 20:dbec34f0e76b | 397 | } |
DavidEGrayson | 20:dbec34f0e76b | 398 | else if (speedModification < -settleModificationStrength) |
DavidEGrayson | 20:dbec34f0e76b | 399 | { |
DavidEGrayson | 20:dbec34f0e76b | 400 | speedModification = -settleModificationStrength; |
DavidEGrayson | 20:dbec34f0e76b | 401 | } |
DavidEGrayson | 20:dbec34f0e76b | 402 | |
DavidEGrayson | 21:c279c6a83671 | 403 | if (state == 0 && timer.read_ms() >= 2000 && reckoner.cos > (1 << 29)) |
DavidEGrayson | 19:a11ffc903774 | 404 | { |
DavidEGrayson | 21:c279c6a83671 | 405 | // Stop turning and start trying to maintain the right position. |
DavidEGrayson | 20:dbec34f0e76b | 406 | state = 1; |
DavidEGrayson | 20:dbec34f0e76b | 407 | } |
DavidEGrayson | 20:dbec34f0e76b | 408 | |
DavidEGrayson | 21:c279c6a83671 | 409 | if (state == 1 && timer.read_ms() >= 5000) |
DavidEGrayson | 21:c279c6a83671 | 410 | { |
DavidEGrayson | 21:c279c6a83671 | 411 | // Stop moving. |
DavidEGrayson | 21:c279c6a83671 | 412 | break; |
DavidEGrayson | 21:c279c6a83671 | 413 | } |
DavidEGrayson | 21:c279c6a83671 | 414 | |
DavidEGrayson | 27:2456f68be679 | 415 | if (motorUpdatePacer.pace()) |
DavidEGrayson | 20:dbec34f0e76b | 416 | { |
DavidEGrayson | 27:2456f68be679 | 417 | int16_t rotationSpeed; |
DavidEGrayson | 27:2456f68be679 | 418 | if (state == 1) |
DavidEGrayson | 27:2456f68be679 | 419 | { |
DavidEGrayson | 27:2456f68be679 | 420 | float s = (float)reckoner.sin / (1 << 30); |
DavidEGrayson | 27:2456f68be679 | 421 | integral += s; |
DavidEGrayson | 27:2456f68be679 | 422 | rotationSpeed = -(s * 2400 + integral * 20); |
DavidEGrayson | 27:2456f68be679 | 423 | |
DavidEGrayson | 27:2456f68be679 | 424 | if (rotationSpeed > 300) |
DavidEGrayson | 27:2456f68be679 | 425 | { |
DavidEGrayson | 27:2456f68be679 | 426 | rotationSpeed = 300; |
DavidEGrayson | 27:2456f68be679 | 427 | } |
DavidEGrayson | 27:2456f68be679 | 428 | if (rotationSpeed < -300) |
DavidEGrayson | 27:2456f68be679 | 429 | { |
DavidEGrayson | 27:2456f68be679 | 430 | rotationSpeed = -300; |
DavidEGrayson | 27:2456f68be679 | 431 | } |
DavidEGrayson | 27:2456f68be679 | 432 | } |
DavidEGrayson | 27:2456f68be679 | 433 | else |
DavidEGrayson | 27:2456f68be679 | 434 | { |
DavidEGrayson | 27:2456f68be679 | 435 | rotationSpeed = settleSpeed; |
DavidEGrayson | 27:2456f68be679 | 436 | } |
DavidEGrayson | 27:2456f68be679 | 437 | |
DavidEGrayson | 27:2456f68be679 | 438 | int16_t speedLeft = -rotationSpeed + speedModification; |
DavidEGrayson | 27:2456f68be679 | 439 | int16_t speedRight = rotationSpeed + speedModification; |
DavidEGrayson | 27:2456f68be679 | 440 | motorsSpeedSet(speedLeft, speedRight); |
DavidEGrayson | 20:dbec34f0e76b | 441 | } |
DavidEGrayson | 21:c279c6a83671 | 442 | |
DavidEGrayson | 21:c279c6a83671 | 443 | if (state == 1 && reportPacer.pace()) |
DavidEGrayson | 21:c279c6a83671 | 444 | { |
DavidEGrayson | 21:c279c6a83671 | 445 | pc.printf("%11d %11d %11d %11d | %11f %11f\r\n", |
DavidEGrayson | 21:c279c6a83671 | 446 | reckoner.cos, reckoner.sin, reckoner.x, reckoner.y, |
DavidEGrayson | 21:c279c6a83671 | 447 | determinant(), dotProduct()); |
DavidEGrayson | 21:c279c6a83671 | 448 | } |
DavidEGrayson | 19:a11ffc903774 | 449 | } |
DavidEGrayson | 20:dbec34f0e76b | 450 | |
DavidEGrayson | 21:c279c6a83671 | 451 | // Done! Stop moving. |
DavidEGrayson | 20:dbec34f0e76b | 452 | motorsSpeedSet(0, 0); |
DavidEGrayson | 18:b65fbb795396 | 453 | } |