Kenneth Swanson / Mbed 2 deprecated great-bike-wow

A system to help you ride your bike better than you do right now.

Dependencies:   4DGL-uLCD-SE SDFileSystem mbed LSM9DS1_Library_cal

main.cpp@8:8c073046821d, 2016-12-05 (annotated)

Committer:
kswanson31
Date:
Mon Dec 05 02:45:17 2016 +0000
Revision:
8:8c073046821d
Parent:
7:0d5396762696
Child:
9:53bb4c706947
Added spedometer code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kswanson31 0:134f49df01f8 1 #include "mbed.h"
kswanson31 0:134f49df01f8 2 #include "SDFileSystem.h"
kswanson31 2:d08643ff3c62 3 #include "uLCD_4DGL.h"
fkhan39 7:0d5396762696 4 #include "LSM9DS1.h"
kswanson31 3:26e0c0d7984f 5 #include <fstream>
kswanson31 3:26e0c0d7984f 6 #include <iomanip>
kswanson31 3:26e0c0d7984f 7 using namespace std;
kswanson31 0:134f49df01f8 8
kswanson31 3:26e0c0d7984f 9 #define START_S 1480719111
kswanson31 0:134f49df01f8 10
kswanson31 8:8c073046821d 11 # define PI 3.14159
kswanson31 8:8c073046821d 12
kswanson31 4:1928bf053958 13 #define LEFT 0xA
kswanson31 4:1928bf053958 14 #define RIGHT 0xB
kswanson31 4:1928bf053958 15 #define STOP 0xC
kswanson31 4:1928bf053958 16 #define GO 0xD
kswanson31 4:1928bf053958 17
kswanson31 4:1928bf053958 18 int lightState;
kswanson31 4:1928bf053958 19
fkhan39 7:0d5396762696 20 DigitalOut leftBlinker(p22);
fkhan39 7:0d5396762696 21 DigitalOut rightBlinker(p23);
fkhan39 7:0d5396762696 22 DigitalOut brakeLight(p21);
kswanson31 6:45a5043acc7e 23 Timer blinkT;
kswanson31 8:8c073046821d 24
fkhan39 7:0d5396762696 25 AnalogIn flex(p15);
fkhan39 7:0d5396762696 26 LSM9DS1 imu(p9, p10, 0xD6, 0x3C);
kswanson31 4:1928bf053958 27
kswanson31 3:26e0c0d7984f 28 SDFileSystem sd(p11, p12, p13, p14, "sd"); //mosi -> DI, miso <- DO, slck -> sclck, CS -> CS
kswanson31 3:26e0c0d7984f 29 uLCD_4DGL lcd(p28, p27, p29);
kswanson31 0:134f49df01f8 30
kswanson31 4:1928bf053958 31 // speed sensor
kswanson31 4:1928bf053958 32 InterruptIn hallSensor(p8);
kswanson31 4:1928bf053958 33 Timer hallT;
kswanson31 4:1928bf053958 34 int stopped;
kswanson31 4:1928bf053958 35
kswanson31 3:26e0c0d7984f 36 float miles = 0;
kswanson31 3:26e0c0d7984f 37 float speed = 0;
kswanson31 3:26e0c0d7984f 38 float maxSpeed = 0;
kswanson31 3:26e0c0d7984f 39 time_t seconds;
kswanson31 3:26e0c0d7984f 40
kswanson31 3:26e0c0d7984f 41 void store_trip();
kswanson31 3:26e0c0d7984f 42 void recall_trips();
kswanson31 4:1928bf053958 43 int get_state();
kswanson31 4:1928bf053958 44 void pass();
kswanson31 0:134f49df01f8 45
kswanson31 4:1928bf053958 46 int main() {
kswanson31 0:134f49df01f8 47 // open the file for reading and appending records
kswanson31 0:134f49df01f8 48 // recall last trip
kswanson31 3:26e0c0d7984f 49 recall_trips();
kswanson31 4:1928bf053958 50 wait(10);
kswanson31 0:134f49df01f8 51 lcd.cls();
fkhan39 7:0d5396762696 52 /*
fkhan39 7:0d5396762696 53 imu.begin();
fkhan39 7:0d5396762696 54 if (!imu.begin()) {
fkhan39 7:0d5396762696 55 lcd.printf("Failed to communicate with LSM9DS1.\n");
fkhan39 7:0d5396762696 56 }
fkhan39 7:0d5396762696 57 imu.calibrate();
fkhan39 7:0d5396762696 58 */
kswanson31 0:134f49df01f8 59 // normal operation loop here
kswanson31 4:1928bf053958 60 int going = 1; // cyclist is moving
kswanson31 4:1928bf053958 61 set_time(START_S); // Set RTC time
kswanson31 4:1928bf053958 62
kswanson31 8:8c073046821d 63 float theta;
kswanson31 8:8c073046821d 64
kswanson31 4:1928bf053958 65 hallSensor.fall(&pass);
kswanson31 4:1928bf053958 66 hallT.start(); // start the hall sensor timer
kswanson31 6:45a5043acc7e 67
kswanson31 6:45a5043acc7e 68 int blinks;
kswanson31 4:1928bf053958 69
kswanson31 3:26e0c0d7984f 70 while(going) {
kswanson31 4:1928bf053958 71
kswanson31 3:26e0c0d7984f 72 seconds = time(NULL) - START_S; // return the seconds passed since start
kswanson31 2:d08643ff3c62 73
kswanson31 4:1928bf053958 74 if (hallT.read() > 6.0 && !stopped) {
fkhan39 7:0d5396762696 75 speed = 0;
kswanson31 4:1928bf053958 76 stopped = 1;
kswanson31 4:1928bf053958 77 }
kswanson31 4:1928bf053958 78
kswanson31 4:1928bf053958 79 going = (hallT.read() > 20.0 && stopped) ? 0 : 1;
kswanson31 4:1928bf053958 80 maxSpeed = (speed > maxSpeed) ? speed : maxSpeed;
kswanson31 3:26e0c0d7984f 81
kswanson31 4:1928bf053958 82 lcd.locate(0, 1);
kswanson31 8:8c073046821d 83 lcd.color(BLUE);
fkhan39 7:0d5396762696 84 lcd.printf("Distance : %3.1f mi\n\n", miles);
kswanson31 8:8c073046821d 85 lcd.color(GREEN);
fkhan39 7:0d5396762696 86 lcd.printf("Speed : %2.1f mph\n\n", speed);
fkhan39 7:0d5396762696 87 lcd.color(LGREY);
fkhan39 7:0d5396762696 88 lcd.printf("Time : %3.1f min\n\n", (float)seconds / 60);
kswanson31 4:1928bf053958 89
kswanson31 8:8c073046821d 90 lcd.circle(64, 128, 64, GREEN);
kswanson31 8:8c073046821d 91 theta = PI - (speed / 9.536);
kswanson31 8:8c073046821d 92 lcd.line(64, 128, 64 + 62*cos(theta), + 62*sin(theta), WHITE);
kswanson31 8:8c073046821d 93
kswanson31 8:8c073046821d 94
kswanson31 4:1928bf053958 95 // light states code
fkhan39 7:0d5396762696 96 // lightState = get_state();
kswanson31 6:45a5043acc7e 97
kswanson31 6:45a5043acc7e 98 if (lightState == STOP) {
kswanson31 6:45a5043acc7e 99 brakeLight = 1;
kswanson31 6:45a5043acc7e 100 } else if (lightState == GO) {
kswanson31 6:45a5043acc7e 101 brakeLight = 0;
kswanson31 6:45a5043acc7e 102 } else {
kswanson31 6:45a5043acc7e 103 blinkT.start();
kswanson31 6:45a5043acc7e 104 }
kswanson31 6:45a5043acc7e 105
kswanson31 6:45a5043acc7e 106 if (blinks > 10) {
kswanson31 6:45a5043acc7e 107 rightBlinker = 0; leftBlinker = 0;
kswanson31 6:45a5043acc7e 108 blinks = 0;
kswanson31 6:45a5043acc7e 109 } else {
kswanson31 6:45a5043acc7e 110 blinkT.stop();
kswanson31 6:45a5043acc7e 111 rightBlinker = ((0.5 - blinkT.read() == 0) && lightState == RIGHT) ? ~rightBlinker : rightBlinker;
kswanson31 6:45a5043acc7e 112 leftBlinker = ((0.5 - blinkT.read() == 0) && lightState == LEFT) ? ~leftBlinker : leftBlinker;
kswanson31 6:45a5043acc7e 113 blinkT.reset();
kswanson31 6:45a5043acc7e 114 blinkT.start();
kswanson31 6:45a5043acc7e 115 blinks++;
kswanson31 6:45a5043acc7e 116 }
kswanson31 6:45a5043acc7e 117
kswanson31 6:45a5043acc7e 118
kswanson31 2:d08643ff3c62 119 }
kswanson31 0:134f49df01f8 120
kswanson31 0:134f49df01f8 121 // store this trip
kswanson31 0:134f49df01f8 122 lcd.cls();
kswanson31 3:26e0c0d7984f 123 store_trip();
kswanson31 0:134f49df01f8 124
kswanson31 0:134f49df01f8 125 // end everything
kswanson31 0:134f49df01f8 126 }
kswanson31 0:134f49df01f8 127
kswanson31 3:26e0c0d7984f 128 void recall_trips(void) {
kswanson31 0:134f49df01f8 129 // display the most recent trip made on the screen
kswanson31 0:134f49df01f8 130 // display the most impressive trip (longest distance, best speed, least time)
kswanson31 0:134f49df01f8 131
kswanson31 3:26e0c0d7984f 132 float f_miles;
kswanson31 3:26e0c0d7984f 133 float f_maxSpeed;
fkhan39 7:0d5396762696 134 float f_minutes;
kswanson31 3:26e0c0d7984f 135 ifstream file;
kswanson31 0:134f49df01f8 136
kswanson31 1:9d3f2e86392e 137 // read out the most recent trip
kswanson31 3:26e0c0d7984f 138 file.open("/sd/records/recent.txt");
kswanson31 1:9d3f2e86392e 139
kswanson31 3:26e0c0d7984f 140 if (!file.is_open()) {
kswanson31 1:9d3f2e86392e 141 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 142 lcd.printf("Could not open file\n");
kswanson31 1:9d3f2e86392e 143 } else {
fkhan39 7:0d5396762696 144 file >> f_miles >> f_maxSpeed >> f_minutes;
kswanson31 1:9d3f2e86392e 145 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 146 lcd.printf("Your last trip\n\n");
fkhan39 7:0d5396762696 147 lcd.printf("Distance : %3.1f mi\n\n", f_miles);
fkhan39 7:0d5396762696 148 lcd.printf("Top speed : %2.1f mph\n\n", f_maxSpeed);
fkhan39 7:0d5396762696 149 lcd.printf("Time : %3.1f min\n\n", f_minutes);
kswanson31 1:9d3f2e86392e 150 }
kswanson31 1:9d3f2e86392e 151
kswanson31 3:26e0c0d7984f 152 file.close();
kswanson31 3:26e0c0d7984f 153 wait(0.5);
kswanson31 3:26e0c0d7984f 154
kswanson31 3:26e0c0d7984f 155 // display the best trip
kswanson31 3:26e0c0d7984f 156
kswanson31 3:26e0c0d7984f 157 file.open("/sd/records/best-of.txt");
kswanson31 3:26e0c0d7984f 158
fkhan39 7:0d5396762696 159 lcd.color(WHITE);
kswanson31 3:26e0c0d7984f 160 if(!file.is_open()) {
kswanson31 3:26e0c0d7984f 161 lcd.printf("Could not open file\n");
kswanson31 3:26e0c0d7984f 162 } else {
kswanson31 3:26e0c0d7984f 163 // show the best trip
fkhan39 7:0d5396762696 164 file >> f_miles >> f_maxSpeed >> f_minutes;
kswanson31 3:26e0c0d7984f 165 lcd.printf("Your best trip\n\n");
fkhan39 7:0d5396762696 166 lcd.printf("Distance : %3.1f mi\n\n", f_miles);
fkhan39 7:0d5396762696 167 lcd.printf("Top speed : %2.1f mph\n\n", f_maxSpeed);
fkhan39 7:0d5396762696 168 lcd.printf("Time : %3.1f min\n\n", f_minutes);
kswanson31 3:26e0c0d7984f 169 }
kswanson31 3:26e0c0d7984f 170
kswanson31 3:26e0c0d7984f 171 file.close();
kswanson31 3:26e0c0d7984f 172 wait(0.5);
kswanson31 3:26e0c0d7984f 173 }
kswanson31 1:9d3f2e86392e 174
kswanson31 3:26e0c0d7984f 175 void store_trip(void) {
kswanson31 3:26e0c0d7984f 176 // store the most recent trip completed
kswanson31 3:26e0c0d7984f 177 // determine whether this trip was a record, and indicate if so
kswanson31 3:26e0c0d7984f 178
fkhan39 7:0d5396762696 179 float minutes;
kswanson31 3:26e0c0d7984f 180 fstream file;
kswanson31 3:26e0c0d7984f 181
kswanson31 3:26e0c0d7984f 182 file.open("/sd/records/recent.txt");
kswanson31 3:26e0c0d7984f 183
fkhan39 7:0d5396762696 184 lcd.color(WHITE);
kswanson31 3:26e0c0d7984f 185 if (!file.is_open()) {
kswanson31 3:26e0c0d7984f 186 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 187 lcd.printf("Could not open file\n");
kswanson31 3:26e0c0d7984f 188 } else {
fkhan39 7:0d5396762696 189 minutes = (float)seconds / 60;
kswanson31 0:134f49df01f8 190 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 191 lcd.printf("This trip\n\n");
fkhan39 7:0d5396762696 192 lcd.printf("Distance : %3.1f mi\n\n", miles);
fkhan39 7:0d5396762696 193 lcd.printf("Top speed : %2.1f mph\n\n", maxSpeed);
fkhan39 7:0d5396762696 194 lcd.printf("Time : %3.1f min\n\n", minutes);
kswanson31 3:26e0c0d7984f 195 // overwrite most recent
fkhan39 7:0d5396762696 196 file << fixed << setprecision(1) << miles << " " << maxSpeed << " " << minutes << endl;
kswanson31 3:26e0c0d7984f 197 }
kswanson31 3:26e0c0d7984f 198
kswanson31 3:26e0c0d7984f 199 file.close();
kswanson31 3:26e0c0d7984f 200 wait(0.5);
kswanson31 3:26e0c0d7984f 201
kswanson31 3:26e0c0d7984f 202 file.open("/sd/records/best-of.txt");
kswanson31 3:26e0c0d7984f 203
kswanson31 3:26e0c0d7984f 204 if (!file.is_open()) {
kswanson31 3:26e0c0d7984f 205 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 206 lcd.printf("Could not open file\n");
kswanson31 0:134f49df01f8 207 } else {
kswanson31 0:134f49df01f8 208 lcd.locate(0, 1);
kswanson31 3:26e0c0d7984f 209 // check if you beat your best
kswanson31 0:134f49df01f8 210 }
kswanson31 3:26e0c0d7984f 211
kswanson31 3:26e0c0d7984f 212 file.close();
fkhan39 7:0d5396762696 213 wait(0.5);
kswanson31 4:1928bf053958 214 }
kswanson31 4:1928bf053958 215
kswanson31 6:45a5043acc7e 216 int get_state(void) {
fkhan39 7:0d5396762696 217 imu.readAccel();
fkhan39 7:0d5396762696 218 float f = flex.read();
fkhan39 7:0d5396762696 219 int x = imu.ax, y = imu.ay, z = imu.az;
fkhan39 7:0d5396762696 220 if (z > 0 && z > abs(y) && z > abs(x) && y < 0 && f >= 0.92)
fkhan39 7:0d5396762696 221 return STOP;
fkhan39 7:0d5396762696 222 if (x < 0 && abs(x) > abs(z) && abs(x) > abs(y) && f <= 0.87)
fkhan39 7:0d5396762696 223 return LEFT;
fkhan39 7:0d5396762696 224 if (y > 0 && y > abs(z) && y > abs(x) && f >= 0.87)
fkhan39 7:0d5396762696 225 return RIGHT;
fkhan39 7:0d5396762696 226 return GO;
kswanson31 6:45a5043acc7e 227 }
kswanson31 6:45a5043acc7e 228
kswanson31 4:1928bf053958 229 void pass(void) {
kswanson31 4:1928bf053958 230 // interrupt, performed when the hallsensor passes the magnet
kswanson31 4:1928bf053958 231 stopped = 0; // reset the global
kswanson31 4:1928bf053958 232 hallT.stop();
kswanson31 5:436b39863099 233 speed = 0.00136364 / (hallT.read() / 3600); // current speed
kswanson31 4:1928bf053958 234 miles += 0.00136364; // circumference of the tire in miles
kswanson31 5:436b39863099 235 hallT.reset();
kswanson31 5:436b39863099 236 hallT.start();
kswanson31 0:134f49df01f8 237 }