EE149
/
FinalProject
Final Project files for mBed development.
main.c@37:1d51cf101b03, 2014-12-12 (annotated)
- Committer:
- alecguertin
- Date:
- Fri Dec 12 20:53:45 2014 +0000
- Revision:
- 37:1d51cf101b03
- Parent:
- 35:a1c14c6d9282
- Child:
- 39:cc8691700d2a
working!
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lsaristo | 1:7e0243c27ecb | 1 | /** |
lsaristo | 1:7e0243c27ecb | 2 | * @file driver.c |
lsaristo | 29:459ff10d2a07 | 3 | * @brief Primary control logic for robot. |
lsaristo | 1:7e0243c27ecb | 4 | * |
lsaristo | 29:459ff10d2a07 | 5 | * @author John Wilkey |
lsaristo | 29:459ff10d2a07 | 6 | * @author Alec Guertin |
lsaristo | 29:459ff10d2a07 | 7 | * @author Chester Chu |
lsaristo | 1:7e0243c27ecb | 8 | */ |
lsaristo | 9:3a0433c391cb | 9 | #include "main.h" |
John Wilkey |
5:01882c3de2dc | 10 | |
lsaristo | 29:459ff10d2a07 | 11 | m3pi pi; /**< m3pi Object for all control operations. */ |
lsaristo | 29:459ff10d2a07 | 12 | Timer timer; /**< Timer used to wait in timerWait. */ |
lsaristo | 29:459ff10d2a07 | 13 | DigitalIn start_button(p21); /**< Pi start button input on mBed pin 32 */ |
lsaristo | 29:459ff10d2a07 | 14 | int draw; /**< Boolean for drawing/moving. */ |
lsaristo | 9:3a0433c391cb | 15 | |
lsaristo | 29:459ff10d2a07 | 16 | /* 4 mBed onboard LEDs */ |
lsaristo | 29:459ff10d2a07 | 17 | DigitalOut oled_1(LED1), oled_2(LED2), oled_3(LED3), oled_4(LED4); |
lsaristo | 7:6e5cc24e1ce7 | 18 | |
lsaristo | 29:459ff10d2a07 | 19 | /* 8 LEDs driven from mBed digital outs. */ |
lsaristo | 29:459ff10d2a07 | 20 | DigitalOut pin13(p13), pin14(p14), pin15(p15), pin16(p16), |
lsaristo | 29:459ff10d2a07 | 21 | pin17(p17), pin18(p18), pin19(p19), pin20(p20); |
lsaristo | 9:3a0433c391cb | 22 | |
alecguertin | 15:14d4e7021125 | 23 | /* Local File System */ |
alecguertin | 15:14d4e7021125 | 24 | LocalFileSystem local("local"); |
lsaristo | 9:3a0433c391cb | 25 | |
lsaristo | 29:459ff10d2a07 | 26 | /** @brief Entry point. Main loop. */ |
John Wilkey |
5:01882c3de2dc | 27 | int main() |
John Wilkey |
5:01882c3de2dc | 28 | { |
lsaristo | 29:459ff10d2a07 | 29 | FILE *ps_file; |
lsaristo | 29:459ff10d2a07 | 30 | float cal_time; |
lsaristo | 29:459ff10d2a07 | 31 | float pos = 0; |
lsaristo | 29:459ff10d2a07 | 32 | float over_thresh = 0.05; |
lsaristo | 29:459ff10d2a07 | 33 | float correction = 0.2*DRIVE_SPEED; |
lsaristo | 29:459ff10d2a07 | 34 | int instbuflen = 250; |
lsaristo | 29:459ff10d2a07 | 35 | char instbuf[instbuflen]; |
lsaristo | 29:459ff10d2a07 | 36 | |
lsaristo | 32:8b589710632b | 37 | // --------------------------------------------------------- |
lsaristo | 32:8b589710632b | 38 | // First calibrate robot and figure out space dimensions. |
lsaristo | 21:0c80a5d89ea3 | 39 | pi.cls(); |
lsaristo | 21:0c80a5d89ea3 | 40 | pi.locate(0,1); |
lsaristo | 21:0c80a5d89ea3 | 41 | pi.printf("%f mV", pi.battery()); |
lsaristo | 12:1aa6b8a74136 | 42 | pi.sensor_auto_calibrate(); |
lsaristo | 34:3066686d5152 | 43 | timerWait(.2); |
alecguertin | 26:a74edc4c6acb | 44 | |
lsaristo | 21:0c80a5d89ea3 | 45 | do { |
lsaristo | 21:0c80a5d89ea3 | 46 | pos = pi.line_position(); |
lsaristo | 34:3066686d5152 | 47 | if(pos > over_thresh) { |
lsaristo | 21:0c80a5d89ea3 | 48 | pi.right_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 49 | pi.left_motor(CAL_SPEED-correction); |
lsaristo | 21:0c80a5d89ea3 | 50 | } else if(pos < -over_thresh) { |
lsaristo | 21:0c80a5d89ea3 | 51 | pi.left_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 52 | pi.right_motor(CAL_SPEED-correction); |
lsaristo | 21:0c80a5d89ea3 | 53 | } else { |
lsaristo | 21:0c80a5d89ea3 | 54 | pi.right_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 55 | pi.left_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 56 | } |
lsaristo | 21:0c80a5d89ea3 | 57 | pi.cls(); |
lsaristo | 21:0c80a5d89ea3 | 58 | pi.locate(0,0); |
lsaristo | 21:0c80a5d89ea3 | 59 | pi.printf("Pos: %f", pos); |
lsaristo | 21:0c80a5d89ea3 | 60 | } while(pos != -1 && pos > -0.3); |
lsaristo | 21:0c80a5d89ea3 | 61 | pi.stop(); |
lsaristo | 21:0c80a5d89ea3 | 62 | if(pos != -1) { |
lsaristo | 21:0c80a5d89ea3 | 63 | timer.stop(); |
lsaristo | 21:0c80a5d89ea3 | 64 | } else { |
lsaristo | 34:3066686d5152 | 65 | oled_1 = 1; |
lsaristo | 34:3066686d5152 | 66 | while(1); |
lsaristo | 21:0c80a5d89ea3 | 67 | } |
chstrchu | 31:1e950ee04481 | 68 | left(180); |
alecguertin | 22:46b9d9b2e35c | 69 | Timer caltimer; |
alecguertin | 22:46b9d9b2e35c | 70 | caltimer.start(); |
lsaristo | 12:1aa6b8a74136 | 71 | do { |
lsaristo | 12:1aa6b8a74136 | 72 | pos = pi.line_position(); |
lsaristo | 13:070846d87d4a | 73 | if(pos > over_thresh) { |
lsaristo | 21:0c80a5d89ea3 | 74 | pi.right_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 75 | pi.left_motor(CAL_SPEED-correction); |
lsaristo | 13:070846d87d4a | 76 | } else if(pos < -over_thresh) { |
lsaristo | 21:0c80a5d89ea3 | 77 | pi.left_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 78 | pi.right_motor(CAL_SPEED-correction); |
lsaristo | 13:070846d87d4a | 79 | } else { |
lsaristo | 21:0c80a5d89ea3 | 80 | pi.right_motor(CAL_SPEED); |
lsaristo | 21:0c80a5d89ea3 | 81 | pi.left_motor(CAL_SPEED); |
alecguertin | 15:14d4e7021125 | 82 | } |
alecguertin | 15:14d4e7021125 | 83 | pi.cls(); |
alecguertin | 15:14d4e7021125 | 84 | pi.locate(0,0); |
alecguertin | 15:14d4e7021125 | 85 | pi.printf("Pos: %f", pos); |
alecguertin | 15:14d4e7021125 | 86 | } while(pos != -1 && pos <= 0.3); |
alecguertin | 22:46b9d9b2e35c | 87 | caltimer.stop(); |
lsaristo | 34:3066686d5152 | 88 | cal_time = caltimer.read_ms()*2; |
alecguertin | 15:14d4e7021125 | 89 | pi.stop(); |
alecguertin | 15:14d4e7021125 | 90 | if(pos != -1) { |
alecguertin | 15:14d4e7021125 | 91 | timer.stop(); |
alecguertin | 15:14d4e7021125 | 92 | } else { |
lsaristo | 34:3066686d5152 | 93 | oled_1 = 1; |
lsaristo | 34:3066686d5152 | 94 | while(1); |
alecguertin | 15:14d4e7021125 | 95 | } |
alecguertin | 37:1d51cf101b03 | 96 | right(183); |
lsaristo | 32:8b589710632b | 97 | timerWait(.2); |
alecguertin | 37:1d51cf101b03 | 98 | /*int wiggle_count = 0; |
lsaristo | 32:8b589710632b | 99 | |
lsaristo | 35:a1c14c6d9282 | 100 | for( ; fabs(pos = pi.line_position()) > CLOSE_ENOUGH |
lsaristo | 35:a1c14c6d9282 | 101 | && wiggle_count < WIGGLE_MAX; wiggle_count++) { |
lsaristo | 35:a1c14c6d9282 | 102 | pi.right((pos < 0 ? -.6*.4*CAL_SPEED : .6*.4*CAL_SPEED)); |
alecguertin | 22:46b9d9b2e35c | 103 | pi.cls(); |
alecguertin | 22:46b9d9b2e35c | 104 | pi.locate(0,0); |
alecguertin | 22:46b9d9b2e35c | 105 | pi.printf("O: %f", pos); |
alecguertin | 37:1d51cf101b03 | 106 | }*/ |
alecguertin | 37:1d51cf101b03 | 107 | pi.stop(); |
lsaristo | 32:8b589710632b | 108 | timerWait(0.2); |
lsaristo | 34:3066686d5152 | 109 | backward(400); |
alecguertin | 37:1d51cf101b03 | 110 | //while(1); |
lsaristo | 34:3066686d5152 | 111 | |
lsaristo | 32:8b589710632b | 112 | // --------------------------------------------------------- |
lsaristo | 32:8b589710632b | 113 | // DONE calibrating. Begin reading in coordinate |
lsaristo | 32:8b589710632b | 114 | // file and run robot. |
alecguertin | 17:c72c092fcdf7 | 115 | size_t bytes_read = 0; |
alecguertin | 22:46b9d9b2e35c | 116 | int err, x, y, last_x, last_y, delta_x, delta_y; |
alecguertin | 22:46b9d9b2e35c | 117 | float delta_a; |
alecguertin | 19:47759cf4f9b9 | 118 | int dim_x, dim_y; |
alecguertin | 17:c72c092fcdf7 | 119 | int offset = 0; |
alecguertin | 17:c72c092fcdf7 | 120 | char *cur, *next; |
alecguertin | 19:47759cf4f9b9 | 121 | float angle; |
alecguertin | 19:47759cf4f9b9 | 122 | double dist, theta; |
alecguertin | 18:eab7b0e89398 | 123 | angle = 0; |
alecguertin | 18:eab7b0e89398 | 124 | theta = 0; |
alecguertin | 19:47759cf4f9b9 | 125 | last_x = 0; |
alecguertin | 19:47759cf4f9b9 | 126 | last_y = 0; |
alecguertin | 15:14d4e7021125 | 127 | ps_file = fopen("/local/test.ps", "r"); |
chstrchu | 20:76718145b403 | 128 | if (ps_file == NULL) { |
chstrchu | 20:76718145b403 | 129 | return 1; |
chstrchu | 20:76718145b403 | 130 | } |
alecguertin | 25:2c7717684d09 | 131 | |
alecguertin | 17:c72c092fcdf7 | 132 | /* PS parsing loop. */ |
alecguertin | 19:47759cf4f9b9 | 133 | memset(instbuf, 0, instbuflen); |
chstrchu | 20:76718145b403 | 134 | bytes_read = fread(instbuf, sizeof(char), instbuflen-1, ps_file); |
alecguertin | 22:46b9d9b2e35c | 135 | if (bytes_read == 0) { |
alecguertin | 22:46b9d9b2e35c | 136 | return 1; |
alecguertin | 22:46b9d9b2e35c | 137 | } |
alecguertin | 19:47759cf4f9b9 | 138 | err = sscanf(instbuf, "%d/%d", &dim_x, &dim_y); |
alecguertin | 19:47759cf4f9b9 | 139 | if (err != 2) { |
chstrchu | 20:76718145b403 | 140 | pi.cls(); |
chstrchu | 20:76718145b403 | 141 | pi.locate(0,0); |
chstrchu | 20:76718145b403 | 142 | pi.printf("sscanf1"); |
lsaristo | 34:3066686d5152 | 143 | while(1); |
alecguertin | 19:47759cf4f9b9 | 144 | } |
alecguertin | 19:47759cf4f9b9 | 145 | cur = strchr(instbuf, '\n'); |
chstrchu | 20:76718145b403 | 146 | cur++; |
alecguertin | 22:46b9d9b2e35c | 147 | offset = instbuf+instbuflen-cur-1; |
chstrchu | 20:76718145b403 | 148 | memcpy(instbuf, cur, offset); |
lsaristo | 32:8b589710632b | 149 | |
lsaristo | 32:8b589710632b | 150 | |
lsaristo | 32:8b589710632b | 151 | // --------------------------------------------------------- |
lsaristo | 32:8b589710632b | 152 | // File open and buffer setup. Begin reading instructions and |
lsaristo | 32:8b589710632b | 153 | // moving robot. Refill buffer after each instruction. |
alecguertin | 17:c72c092fcdf7 | 154 | while (1) { |
alecguertin | 17:c72c092fcdf7 | 155 | memset(instbuf+offset, 0, instbuflen-offset); |
alecguertin | 17:c72c092fcdf7 | 156 | bytes_read = fread(instbuf+offset, sizeof(char), instbuflen-1-offset, ps_file); |
alecguertin | 28:9976a94efa83 | 157 | |
alecguertin | 27:44a4a0abc8ee | 158 | if (instbuf[0] == '\0') { |
alecguertin | 28:9976a94efa83 | 159 | pi.cls(); |
alecguertin | 28:9976a94efa83 | 160 | pi.locate(0,0); |
alecguertin | 28:9976a94efa83 | 161 | pi.printf("%s", instbuf+1); |
alecguertin | 37:1d51cf101b03 | 162 | oled_3 = 0; |
alecguertin | 28:9976a94efa83 | 163 | while(1); |
alecguertin | 27:44a4a0abc8ee | 164 | } |
alecguertin | 28:9976a94efa83 | 165 | |
alecguertin | 17:c72c092fcdf7 | 166 | cur = instbuf; |
alecguertin | 22:46b9d9b2e35c | 167 | err = retrieve_inst(instbuf, &x, &y, &draw); |
lsaristo | 32:8b589710632b | 168 | |
alecguertin | 22:46b9d9b2e35c | 169 | if (err == 0) { |
chstrchu | 20:76718145b403 | 170 | pi.cls(); |
chstrchu | 20:76718145b403 | 171 | pi.locate(0,0); |
alecguertin | 22:46b9d9b2e35c | 172 | pi.printf("noinst"); |
alecguertin | 22:46b9d9b2e35c | 173 | return 1; |
alecguertin | 22:46b9d9b2e35c | 174 | } |
lsaristo | 32:8b589710632b | 175 | |
alecguertin | 22:46b9d9b2e35c | 176 | delta_x = x-last_x; |
alecguertin | 22:46b9d9b2e35c | 177 | delta_y = y-last_y; |
lsaristo | 34:3066686d5152 | 178 | if (delta_y == 0) { |
lsaristo | 34:3066686d5152 | 179 | if (delta_x < 0) { |
lsaristo | 34:3066686d5152 | 180 | theta = 180; |
lsaristo | 34:3066686d5152 | 181 | } else { |
lsaristo | 34:3066686d5152 | 182 | theta = 0; |
lsaristo | 34:3066686d5152 | 183 | } |
lsaristo | 34:3066686d5152 | 184 | } else if (delta_x == 0) { |
lsaristo | 34:3066686d5152 | 185 | if (delta_y < 0) { |
lsaristo | 34:3066686d5152 | 186 | theta = -90; |
lsaristo | 34:3066686d5152 | 187 | } else { |
lsaristo | 34:3066686d5152 | 188 | theta = 90; |
lsaristo | 34:3066686d5152 | 189 | } |
lsaristo | 34:3066686d5152 | 190 | } else { |
lsaristo | 34:3066686d5152 | 191 | /* Compute turn angle and turn. */ |
lsaristo | 34:3066686d5152 | 192 | theta = atan(((double) delta_y)/((double) delta_x)); |
lsaristo | 34:3066686d5152 | 193 | theta *= 57.29; |
lsaristo | 34:3066686d5152 | 194 | } |
alecguertin | 27:44a4a0abc8ee | 195 | if (delta_x < 0 && delta_y > 0) { |
alecguertin | 27:44a4a0abc8ee | 196 | theta += 180; |
alecguertin | 27:44a4a0abc8ee | 197 | } |
alecguertin | 22:46b9d9b2e35c | 198 | delta_a = theta-angle; |
lsaristo | 32:8b589710632b | 199 | |
alecguertin | 23:e4616259a7f0 | 200 | if (delta_x < 0 && delta_y < 0) { |
alecguertin | 23:e4616259a7f0 | 201 | delta_a += 180; |
alecguertin | 23:e4616259a7f0 | 202 | } |
lsaristo | 32:8b589710632b | 203 | |
alecguertin | 28:9976a94efa83 | 204 | if (delta_a > 180) { |
alecguertin | 28:9976a94efa83 | 205 | delta_a -= 360; |
lsaristo | 32:8b589710632b | 206 | } else if (delta_a < -180) { |
lsaristo | 30:3211e2962441 | 207 | delta_a = 360 + delta_a; |
lsaristo | 30:3211e2962441 | 208 | } |
alecguertin | 25:2c7717684d09 | 209 | angle += delta_a; |
alecguertin | 28:9976a94efa83 | 210 | if (angle >= 360) { |
alecguertin | 28:9976a94efa83 | 211 | angle -= 360; |
alecguertin | 28:9976a94efa83 | 212 | } |
chstrchu | 31:1e950ee04481 | 213 | pi.cls(); |
chstrchu | 31:1e950ee04481 | 214 | pi.locate(0,0); |
chstrchu | 31:1e950ee04481 | 215 | pi.printf("a:%f", delta_a); |
alecguertin | 37:1d51cf101b03 | 216 | oled_3 = 0; |
alecguertin | 25:2c7717684d09 | 217 | left(delta_a); |
alecguertin | 19:47759cf4f9b9 | 218 | |
alecguertin | 22:46b9d9b2e35c | 219 | /* Put pen into position. */ |
alecguertin | 22:46b9d9b2e35c | 220 | if (draw) { |
alecguertin | 28:9976a94efa83 | 221 | oled_3 = 1; |
alecguertin | 22:46b9d9b2e35c | 222 | } else { |
alecguertin | 28:9976a94efa83 | 223 | oled_3 = 0; |
alecguertin | 22:46b9d9b2e35c | 224 | } |
alecguertin | 22:46b9d9b2e35c | 225 | |
alecguertin | 22:46b9d9b2e35c | 226 | /* Compute drive time and move forward. */ |
alecguertin | 22:46b9d9b2e35c | 227 | dist = sqrt(pow((double) (delta_x),2) + pow((double) (delta_y), 2)); |
alecguertin | 22:46b9d9b2e35c | 228 | if (dist < 0) { |
alecguertin | 22:46b9d9b2e35c | 229 | dist *= -1; |
alecguertin | 22:46b9d9b2e35c | 230 | } |
chstrchu | 31:1e950ee04481 | 231 | pi.cls(); |
chstrchu | 31:1e950ee04481 | 232 | pi.locate(0,0); |
lsaristo | 34:3066686d5152 | 233 | pi.printf("d:%f", 0.55*cal_time*(dist/(double)dim_x)); |
lsaristo | 34:3066686d5152 | 234 | forward(0.55*cal_time*(dist/(double)dim_x)); |
alecguertin | 22:46b9d9b2e35c | 235 | last_x = x; |
alecguertin | 22:46b9d9b2e35c | 236 | last_y = y; |
alecguertin | 22:46b9d9b2e35c | 237 | next = strchr(cur, '\n'); |
alecguertin | 22:46b9d9b2e35c | 238 | if (next == NULL) { |
chstrchu | 20:76718145b403 | 239 | pi.cls(); |
chstrchu | 20:76718145b403 | 240 | pi.locate(0,0); |
alecguertin | 22:46b9d9b2e35c | 241 | pi.printf("nonext"); |
alecguertin | 22:46b9d9b2e35c | 242 | break; |
alecguertin | 17:c72c092fcdf7 | 243 | } |
alecguertin | 22:46b9d9b2e35c | 244 | cur = next+1; |
alecguertin | 22:46b9d9b2e35c | 245 | offset = instbuf+instbuflen-cur-1; |
alecguertin | 17:c72c092fcdf7 | 246 | memcpy(instbuf, cur, offset); |
alecguertin | 15:14d4e7021125 | 247 | } |
chstrchu | 20:76718145b403 | 248 | pi.cls(); |
chstrchu | 20:76718145b403 | 249 | pi.locate(0,0); |
lsaristo | 29:459ff10d2a07 | 250 | pi.printf("Done"); |
lsaristo | 34:3066686d5152 | 251 | pi.stop(); |
lsaristo | 34:3066686d5152 | 252 | oled_3 = 0; |
alecguertin | 27:44a4a0abc8ee | 253 | while (1); |
John Wilkey |
5:01882c3de2dc | 254 | } |
lsaristo | 8:12d780f7443e | 255 | |
alecguertin | 17:c72c092fcdf7 | 256 | int retrieve_inst(char *buf, int *x, int *y, int *draw) |
alecguertin | 17:c72c092fcdf7 | 257 | { |
alecguertin | 17:c72c092fcdf7 | 258 | int matches; |
alecguertin | 17:c72c092fcdf7 | 259 | char *srch; |
alecguertin | 17:c72c092fcdf7 | 260 | matches = sscanf(buf, "%d %d", x, y); |
alecguertin | 17:c72c092fcdf7 | 261 | if (matches != 2) { |
chstrchu | 20:76718145b403 | 262 | pi.cls(); |
chstrchu | 20:76718145b403 | 263 | pi.locate(0,0); |
chstrchu | 20:76718145b403 | 264 | pi.printf("nomatch"); |
alecguertin | 17:c72c092fcdf7 | 265 | return 0; |
alecguertin | 17:c72c092fcdf7 | 266 | } |
alecguertin | 17:c72c092fcdf7 | 267 | srch = strchr(buf, ' '); |
alecguertin | 17:c72c092fcdf7 | 268 | srch++; |
chstrchu | 20:76718145b403 | 269 | srch = strchr(srch, ' '); |
alecguertin | 17:c72c092fcdf7 | 270 | srch++; |
alecguertin | 17:c72c092fcdf7 | 271 | if (srch[0] == 'm') { |
alecguertin | 17:c72c092fcdf7 | 272 | *draw = 0; |
chstrchu | 20:76718145b403 | 273 | } else if (srch[0] == 'l') { |
alecguertin | 17:c72c092fcdf7 | 274 | *draw = 1; |
alecguertin | 17:c72c092fcdf7 | 275 | } else { |
chstrchu | 20:76718145b403 | 276 | pi.cls(); |
chstrchu | 20:76718145b403 | 277 | pi.locate(0,0); |
chstrchu | 20:76718145b403 | 278 | pi.printf("%.8s", srch); |
alecguertin | 17:c72c092fcdf7 | 279 | return 0; |
alecguertin | 17:c72c092fcdf7 | 280 | } |
alecguertin | 17:c72c092fcdf7 | 281 | return 1; |
alecguertin | 17:c72c092fcdf7 | 282 | } |
alecguertin | 17:c72c092fcdf7 | 283 | |
lsaristo | 29:459ff10d2a07 | 284 | void forward(int amt) |
lsaristo | 8:12d780f7443e | 285 | { |
lsaristo | 12:1aa6b8a74136 | 286 | Timer t; |
lsaristo | 34:3066686d5152 | 287 | float ms = 0; |
lsaristo | 34:3066686d5152 | 288 | float last_ms = 0; |
lsaristo | 9:3a0433c391cb | 289 | pi.locate(0,0); |
lsaristo | 9:3a0433c391cb | 290 | pi.printf("Fwd %d", amt); |
lsaristo | 30:3211e2962441 | 291 | t.start(); |
lsaristo | 34:3066686d5152 | 292 | pi.left_motor(DRIVE_SPEED+.002); |
lsaristo | 21:0c80a5d89ea3 | 293 | pi.right_motor(DRIVE_SPEED); |
lsaristo | 34:3066686d5152 | 294 | ms = t.read_ms(); |
lsaristo | 34:3066686d5152 | 295 | while(ms < amt) { |
alecguertin | 37:1d51cf101b03 | 296 | if (ms-last_ms > 500) { |
lsaristo | 34:3066686d5152 | 297 | t.stop(); |
alecguertin | 37:1d51cf101b03 | 298 | right(1.5); |
lsaristo | 34:3066686d5152 | 299 | last_ms = ms; |
lsaristo | 34:3066686d5152 | 300 | t.start(); |
lsaristo | 34:3066686d5152 | 301 | pi.left_motor(DRIVE_SPEED+.002); |
lsaristo | 34:3066686d5152 | 302 | pi.right_motor(DRIVE_SPEED); |
lsaristo | 34:3066686d5152 | 303 | } |
lsaristo | 34:3066686d5152 | 304 | ms = t.read_ms(); |
lsaristo | 34:3066686d5152 | 305 | } |
lsaristo | 12:1aa6b8a74136 | 306 | pi.stop(); |
lsaristo | 8:12d780f7443e | 307 | } |
lsaristo | 8:12d780f7443e | 308 | |
lsaristo | 29:459ff10d2a07 | 309 | void backward(int amt) |
lsaristo | 8:12d780f7443e | 310 | { |
lsaristo | 12:1aa6b8a74136 | 311 | Timer t; |
lsaristo | 12:1aa6b8a74136 | 312 | t.start(); |
alecguertin | 22:46b9d9b2e35c | 313 | pi.backward(.5*DRIVE_SPEED); |
chstrchu | 20:76718145b403 | 314 | while(t.read_ms() < amt); |
lsaristo | 12:1aa6b8a74136 | 315 | pi.stop(); |
lsaristo | 8:12d780f7443e | 316 | } |
lsaristo | 8:12d780f7443e | 317 | |
lsaristo | 29:459ff10d2a07 | 318 | void right(float deg) |
lsaristo | 8:12d780f7443e | 319 | { |
alecguertin | 37:1d51cf101b03 | 320 | deg += 2; |
lsaristo | 24:b797563776fc | 321 | if(deg < 0) { |
lsaristo | 24:b797563776fc | 322 | return left(-1*deg); |
lsaristo | 24:b797563776fc | 323 | } |
alecguertin | 37:1d51cf101b03 | 324 | deg = deg; |
lsaristo | 12:1aa6b8a74136 | 325 | Timer t; |
alecguertin | 37:1d51cf101b03 | 326 | float amt = ((((float)deg)/360)*TIME_FACT*1000); |
lsaristo | 12:1aa6b8a74136 | 327 | t.start(); |
lsaristo | 30:3211e2962441 | 328 | pi.right(TURN_SPEED); |
alecguertin | 37:1d51cf101b03 | 329 | while(t.read_us() < amt); |
lsaristo | 12:1aa6b8a74136 | 330 | pi.stop(); |
lsaristo | 8:12d780f7443e | 331 | } |
lsaristo | 8:12d780f7443e | 332 | |
lsaristo | 21:0c80a5d89ea3 | 333 | void timerWait(float seconds) |
lsaristo | 21:0c80a5d89ea3 | 334 | { |
lsaristo | 21:0c80a5d89ea3 | 335 | Timer t; |
lsaristo | 21:0c80a5d89ea3 | 336 | t.start(); |
lsaristo | 21:0c80a5d89ea3 | 337 | while(t.read_us() < 1000000*seconds); |
lsaristo | 21:0c80a5d89ea3 | 338 | } |
lsaristo | 21:0c80a5d89ea3 | 339 | |
lsaristo | 29:459ff10d2a07 | 340 | void left(float deg) |
lsaristo | 8:12d780f7443e | 341 | { |
lsaristo | 24:b797563776fc | 342 | if(deg < 0) { |
lsaristo | 24:b797563776fc | 343 | return right(-1*deg); |
lsaristo | 24:b797563776fc | 344 | } |
alecguertin | 37:1d51cf101b03 | 345 | float amt = (((float)deg)/360)*TIME_FACT*1000; |
lsaristo | 12:1aa6b8a74136 | 346 | Timer t; |
lsaristo | 8:12d780f7443e | 347 | pi.left(TURN_SPEED); |
lsaristo | 12:1aa6b8a74136 | 348 | t.start(); |
alecguertin | 37:1d51cf101b03 | 349 | while(t.read_us() < amt); |
lsaristo | 12:1aa6b8a74136 | 350 | pi.stop(); |
lsaristo | 9:3a0433c391cb | 351 | } |