CaryCoders / Mbed 2 deprecated zeus

basic lightning detector with gps and sd card logging

Dependencies:   AS3935 AdafruitGPS SDFileSystem TSI mbed ConfigFile

main.cpp@3:e3974328d808, 2015-06-24 (annotated)

Committer:
ftagius
Date:
Wed Jun 24 12:37:31 2015 +0000
Revision:
3:e3974328d808
Parent:
2:3edb129c60b2
Child:
4:4d26ba1ae0f7
move the sd card logging out of the isr.  it appears if we spend too much time in the isr, the device can hang when interrupts occur in quick succession.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ftagius 0:3328df4c3116 1 #include "mbed.h"
ftagius 0:3328df4c3116 2 #include "GPS.h"
ftagius 0:3328df4c3116 3 #include "main.h"
ftagius 0:3328df4c3116 4 #include "TSISensor.h"
ftagius 0:3328df4c3116 5 #include "SDFileSystem.h"
ftagius 0:3328df4c3116 6 #include "AS3935.h"
ftagius 0:3328df4c3116 7
ftagius 3:e3974328d808 8 // frdm-kl25z as3935 connections for spi1
ftagius 0:3328df4c3116 9 // ------------------------------------------------
ftagius 0:3328df4c3116 10 // Header -- kl25z -- SD/MMC
ftagius 0:3328df4c3116 11 // J2-20 -- PTE1 -- MOSI
ftagius 0:3328df4c3116 12 // J9-13 -- PTE4 -- CS
ftagius 0:3328df4c3116 13 // J2-14 -- GND -- Vss (GND)
ftagius 0:3328df4c3116 14 // J9-9 -- PTE2 -- SCK
ftagius 0:3328df4c3116 15 // J9-11 -- PTE3 -- MISO
ftagius 0:3328df4c3116 16
ftagius 0:3328df4c3116 17 AS3935 ld(PTE1, PTE3, PTE2, PTE4, "ld", 1000000); // MOSI, MISO, SCK, CS, SPI bus freq (hz)
ftagius 0:3328df4c3116 18 InterruptIn IntLightning(PTA12); //IRQ AS3935
ftagius 0:3328df4c3116 19
ftagius 0:3328df4c3116 20
ftagius 0:3328df4c3116 21 // frdm-kl25z sd card connections spi0
ftagius 0:3328df4c3116 22 // ------------------------------------------------
ftagius 0:3328df4c3116 23 // Header -- kl25z -- SPI
ftagius 0:3328df4c3116 24 // J2-8 -- PTD2 -- MOSI
ftagius 0:3328df4c3116 25 // J2-6 -- PTD0 -- CS
ftagius 0:3328df4c3116 26 // J9-12 -- GND -- Vss (GND)
ftagius 0:3328df4c3116 27 // J9-4 -- P3V3 -- Vdd (+3.3v)
ftagius 0:3328df4c3116 28 // J2-12 -- PTD1 -- SCK
ftagius 0:3328df4c3116 29 // J9-14 -- GND -- Vss (GND)
ftagius 0:3328df4c3116 30 // J2-10 -- PTD3 -- MISO
ftagius 0:3328df4c3116 31
ftagius 0:3328df4c3116 32 SDFileSystem sd(PTD2, PTD3, PTD1, PTD0, "sd"); // MOSI, MISO, SCK, CS
ftagius 0:3328df4c3116 33
ftagius 0:3328df4c3116 34 Serial pc(USBTX, USBRX);
ftagius 0:3328df4c3116 35 GPS gpsd(PTE20, PTE21);
ftagius 0:3328df4c3116 36 DigitalOut red(LED_RED);
ftagius 0:3328df4c3116 37 DigitalOut green(LED_GREEN);
ftagius 0:3328df4c3116 38 //DigitalOut blue(LED_BLUE); don't use the blue led, due to a board error, writing to the blue led kills spi
ftagius 3:e3974328d808 39 bool debug=false;
ftagius 0:3328df4c3116 40 int day, month,year,hour,minute,seconds;
cmkachur 2:3edb129c60b2 41 void writeLogFile(int interruptSource, int distance, long energy);
ftagius 1:10d2a051285e 42 char logName[]="lightning_data.csv";
ftagius 1:10d2a051285e 43 int rdistance, rinterrupt;
ftagius 1:10d2a051285e 44 char directory[]="/sd/lightning_data";
ftagius 3:e3974328d808 45 int OriginInt=-1;
ftagius 3:e3974328d808 46 int distance=-1;
ftagius 3:e3974328d808 47 long energy=-1;
ftagius 0:3328df4c3116 48
ftagius 0:3328df4c3116 49 void DetectLightning()
ftagius 0:3328df4c3116 50 {
ftagius 0:3328df4c3116 51 OriginInt = ld.interruptSource();
ftagius 3:e3974328d808 52 distance = ld.lightningDistanceKm();
ftagius 3:e3974328d808 53 energy = ld.getEnergy();
ftagius 0:3328df4c3116 54 }
ftagius 0:3328df4c3116 55
cmkachur 2:3edb129c60b2 56 void writeLogFile(int interruptSource, int distance, long energy)
ftagius 0:3328df4c3116 57 {
ftagius 1:10d2a051285e 58 char logFilePath[128];
ftagius 0:3328df4c3116 59 static bool header=false;
ftagius 0:3328df4c3116 60 FILE *fp;
ftagius 1:10d2a051285e 61
ftagius 1:10d2a051285e 62 sprintf(logFilePath, "%s/%s", directory,logName);
ftagius 0:3328df4c3116 63 sd.mount();
ftagius 1:10d2a051285e 64 fp = fopen(logFilePath, "a");
ftagius 0:3328df4c3116 65 if(fp == NULL) {
ftagius 0:3328df4c3116 66 // retry
ftagius 3:e3974328d808 67 wait_ms(200);
ftagius 1:10d2a051285e 68 fp = fopen(logFilePath, "a");
ftagius 0:3328df4c3116 69 if (fp == NULL)
ftagius 0:3328df4c3116 70 {
ftagius 1:10d2a051285e 71 printf("Could not open file %s for writing\r\n",logFilePath);
ftagius 0:3328df4c3116 72 sd.unmount();
ftagius 1:10d2a051285e 73 printf("unmount sd card \r\n");
ftagius 0:3328df4c3116 74 return;
ftagius 0:3328df4c3116 75 }
ftagius 0:3328df4c3116 76 }
ftagius 3:e3974328d808 77 if (debug)
ftagius 3:e3974328d808 78 pc.printf("Opened log file %s\r\n",logFilePath);
ftagius 0:3328df4c3116 79 // write the log file header
ftagius 0:3328df4c3116 80 if (header == false)
ftagius 0:3328df4c3116 81 {
cmkachur 2:3edb129c60b2 82 fprintf(fp,"# date,time,raw timestamp,latitude,longitude,distance,interrupt,energy\r\n");
ftagius 0:3328df4c3116 83 header = true;
ftagius 0:3328df4c3116 84 }
ftagius 0:3328df4c3116 85 // write to the current log file
ftagius 0:3328df4c3116 86 fprintf(fp,"%02d/%02d/20%02d,", gpsd.month, gpsd.day, gpsd.year);
ftagius 0:3328df4c3116 87 fprintf(fp,"%02d:%02d:%02d,", gpsd.hour, gpsd.minute, gpsd.seconds);
ftagius 0:3328df4c3116 88 fprintf(fp,"%7.0f,",gpsd.timef);
ftagius 0:3328df4c3116 89 fprintf(fp,"%5.7f,%5.7f,", gpsd.lat_deg, gpsd.lon_deg);
ftagius 1:10d2a051285e 90 fprintf(fp,"%d,",distance);
cmkachur 2:3edb129c60b2 91 fprintf(fp,"%d,",interruptSource);
cmkachur 2:3edb129c60b2 92 fprintf(fp,"%ld",energy);
ftagius 0:3328df4c3116 93 fprintf(fp,"\r\n");
ftagius 0:3328df4c3116 94 fflush(fp);
ftagius 0:3328df4c3116 95 f_sync((FIL*)fp);
ftagius 0:3328df4c3116 96 fclose(fp);
ftagius 0:3328df4c3116 97 sd.unmount();
ftagius 3:e3974328d808 98 pc.printf("Event: ");
ftagius 3:e3974328d808 99 switch (interruptSource)
ftagius 3:e3974328d808 100 {
ftagius 3:e3974328d808 101 case 1:
ftagius 3:e3974328d808 102 pc.printf("Noise level too high\r\n");
ftagius 3:e3974328d808 103 break;
ftagius 3:e3974328d808 104 case 4:
ftagius 3:e3974328d808 105 pc.printf("Disturber\r\n");
ftagius 3:e3974328d808 106 break;
ftagius 3:e3974328d808 107 case 8:
ftagius 3:e3974328d808 108 pc.printf("Lightning detection, distance=%dkm energy=%ld\r\n", distance, energy);
ftagius 3:e3974328d808 109 ld.clearStats();
ftagius 3:e3974328d808 110 break;
ftagius 3:e3974328d808 111 default:
ftagius 3:e3974328d808 112 pc.printf("Unknown interrupt %d\r\n", OriginInt);
ftagius 3:e3974328d808 113
ftagius 3:e3974328d808 114 }
ftagius 3:e3974328d808 115
ftagius 3:e3974328d808 116 if (debug)
ftagius 3:e3974328d808 117 pc.printf("Closed log file %s\r\n",logFilePath);
ftagius 0:3328df4c3116 118 }
ftagius 0:3328df4c3116 119
ftagius 0:3328df4c3116 120 int main()
ftagius 0:3328df4c3116 121 {
ftagius 0:3328df4c3116 122 char c;
ftagius 0:3328df4c3116 123 Timer refresh_Timer; //sets up a timer for use in loop; how often do we print GPS info?
ftagius 0:3328df4c3116 124 const int refresh_Time = 1000; //refresh time in ms
ftagius 0:3328df4c3116 125 TSISensor tsi; // touch slider
ftagius 0:3328df4c3116 126 unsigned long measFreq;
ftagius 1:10d2a051285e 127 rdistance=-1;
ftagius 1:10d2a051285e 128 rinterrupt=-1;
ftagius 0:3328df4c3116 129 pc.baud(9600);
ftagius 0:3328df4c3116 130 // initializations for gps
ftagius 0:3328df4c3116 131 green = 1;
ftagius 0:3328df4c3116 132 gpsd.setBaud(9600);
ftagius 0:3328df4c3116 133 gpsd.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
ftagius 0:3328df4c3116 134 gpsd.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);
ftagius 0:3328df4c3116 135 gpsd.sendCommand(PGCMD_ANTENNA);
ftagius 0:3328df4c3116 136 gpsd.day=01;
ftagius 0:3328df4c3116 137 gpsd.month=01;
ftagius 0:3328df4c3116 138 gpsd.year=15;
ftagius 0:3328df4c3116 139 gpsd.hour=1;
ftagius 0:3328df4c3116 140 gpsd.minute=1;
ftagius 0:3328df4c3116 141 gpsd.seconds=1;
ftagius 0:3328df4c3116 142 red = 1;
ftagius 0:3328df4c3116 143 green = 1;
ftagius 3:e3974328d808 144 pc.printf("Touch slider to start lightning detector application\r\n");
ftagius 0:3328df4c3116 145 while(1) {
ftagius 0:3328df4c3116 146 green = 1; // turn led off
ftagius 0:3328df4c3116 147 wait_ms(200);
ftagius 0:3328df4c3116 148 if (tsi.readPercentage())
ftagius 0:3328df4c3116 149 break;
ftagius 0:3328df4c3116 150 green = 0; // turn led on
ftagius 0:3328df4c3116 151 wait_ms(200);
ftagius 0:3328df4c3116 152 if (tsi.readPercentage())
ftagius 0:3328df4c3116 153 break;
ftagius 0:3328df4c3116 154 }
ftagius 0:3328df4c3116 155
ftagius 3:e3974328d808 156 pc.printf("\r\nInitialize lightning detector\r\n");
ftagius 0:3328df4c3116 157 //initializations for lightning detector
ftagius 0:3328df4c3116 158 ld.init();
ftagius 0:3328df4c3116 159 ld.clearStats();
ftagius 1:10d2a051285e 160
cmkachur 2:3edb129c60b2 161 ld.calibrateRCOs(IntLightning);
ftagius 0:3328df4c3116 162 measFreq = ld.tuneAntenna(IntLightning);
ftagius 1:10d2a051285e 163
cmkachur 2:3edb129c60b2 164 //ld.powerUp();
cmkachur 2:3edb129c60b2 165
ftagius 1:10d2a051285e 166 //ld.setIndoors();
ftagius 1:10d2a051285e 167 ld.setOutdoors();
ftagius 0:3328df4c3116 168 ld.setMinimumLightnings(0);
ftagius 0:3328df4c3116 169 ld.setSpikeRejection(2);
ftagius 0:3328df4c3116 170 ld.setNoiseFloor(2);
ftagius 0:3328df4c3116 171 //ld.disableDisturbers();
ftagius 0:3328df4c3116 172 ld.enableDisturbers();
ftagius 0:3328df4c3116 173 ld.setWatchdogThreshold(4);
ftagius 0:3328df4c3116 174 IntLightning.rise(&DetectLightning);
ftagius 0:3328df4c3116 175 int MinBlysk = ld.getMinimumLightnings();
ftagius 0:3328df4c3116 176 int Noise = ld.getNoiseFloor();
ftagius 1:10d2a051285e 177 // ld.setTuneCap(5); // 500kHz
ftagius 0:3328df4c3116 178 int TuneCap = ld.getTuneCap();
ftagius 0:3328df4c3116 179 int SpikeRej = ld.getSpikeRejection();
ftagius 0:3328df4c3116 180 int WatchDog = ld.getWatchdogThreshold();
ftagius 0:3328df4c3116 181
ftagius 3:e3974328d808 182 pc.printf("\r\n Min wylad: %i", MinBlysk);
ftagius 0:3328df4c3116 183 pc.printf("\r\n");
ftagius 0:3328df4c3116 184 pc.printf(" Gain: 0x%02x\r\n",ld.getGain());
ftagius 0:3328df4c3116 185 pc.printf(" Noise: %i", Noise);
ftagius 0:3328df4c3116 186 pc.printf("\r\n");
ftagius 0:3328df4c3116 187 pc.printf(" Tune CAP: %i", TuneCap);
ftagius 0:3328df4c3116 188 pc.printf("\r\n");
ftagius 0:3328df4c3116 189 pc.printf(" Spike rej: %i", SpikeRej);
ftagius 0:3328df4c3116 190 pc.printf("\r\n");
ftagius 0:3328df4c3116 191 pc.printf(" Watchdog: %i", WatchDog);
ftagius 0:3328df4c3116 192 pc.printf("\r\n");
ftagius 0:3328df4c3116 193 pc.printf(" LCO calibration: %ld Hz\n\r", measFreq);
ftagius 0:3328df4c3116 194
ftagius 0:3328df4c3116 195
ftagius 0:3328df4c3116 196 refresh_Timer.start(); //starts the clock on the timer
ftagius 0:3328df4c3116 197 //Mount the filesystem
ftagius 0:3328df4c3116 198 sd.mount();
ftagius 0:3328df4c3116 199 mkdir(directory, 0777);
ftagius 1:10d2a051285e 200 sd.unmount();
ftagius 1:10d2a051285e 201
ftagius 0:3328df4c3116 202 bool gpsFix=false;
ftagius 0:3328df4c3116 203 while (1)
ftagius 0:3328df4c3116 204 {
ftagius 3:e3974328d808 205 if (OriginInt != -1)
ftagius 3:e3974328d808 206 {
ftagius 3:e3974328d808 207 // the ld detector generated an interrupt, log the event
ftagius 3:e3974328d808 208 IntLightning.disable_irq();
ftagius 3:e3974328d808 209 writeLogFile(OriginInt,distance, energy);
ftagius 3:e3974328d808 210 ld.clearStats();
ftagius 3:e3974328d808 211 OriginInt = -1;
ftagius 3:e3974328d808 212 distance = -1;
ftagius 3:e3974328d808 213 energy = -1;
ftagius 3:e3974328d808 214 IntLightning.enable_irq();
ftagius 3:e3974328d808 215 }
ftagius 3:e3974328d808 216
ftagius 0:3328df4c3116 217 c = gpsd.read(); //queries the GPS
ftagius 0:3328df4c3116 218 if (debug)
ftagius 0:3328df4c3116 219 {
ftagius 0:3328df4c3116 220 if (c) {
ftagius 0:3328df4c3116 221 printf("%c", c); //this line will echo the GPS data if not paused
ftagius 0:3328df4c3116 222 continue;
ftagius 0:3328df4c3116 223 }
ftagius 0:3328df4c3116 224 }
ftagius 0:3328df4c3116 225
ftagius 0:3328df4c3116 226 //check if we recieved a new message from GPS, if so, attempt to parse it,
ftagius 0:3328df4c3116 227 if ( gpsd.newNMEAreceived() ) {
ftagius 0:3328df4c3116 228 if ( !gpsd.parse(gpsd.lastNMEA()) ) {
ftagius 0:3328df4c3116 229 continue;
ftagius 0:3328df4c3116 230 }
ftagius 0:3328df4c3116 231 }
ftagius 0:3328df4c3116 232
ftagius 0:3328df4c3116 233 // update globals with the lastest gps time stamp
ftagius 0:3328df4c3116 234 day=gpsd.day;
ftagius 0:3328df4c3116 235 month=gpsd.month;
ftagius 0:3328df4c3116 236 year=gpsd.year;
ftagius 0:3328df4c3116 237 hour=gpsd.hour;
ftagius 0:3328df4c3116 238 minute=gpsd.minute;
ftagius 0:3328df4c3116 239 seconds=gpsd.seconds;
ftagius 0:3328df4c3116 240
ftagius 0:3328df4c3116 241 //check if enough time has passed to warrant printing GPS info to screen
ftagius 0:3328df4c3116 242 //note if refresh_Time is too low or pc.baud is too low, GPS data may be lost during printing
ftagius 0:3328df4c3116 243 if (refresh_Timer.read_ms() >= refresh_Time)
ftagius 0:3328df4c3116 244 {
ftagius 0:3328df4c3116 245 if (gpsd.fix) {
ftagius 0:3328df4c3116 246 // got a gps fix
ftagius 0:3328df4c3116 247 if (gpsFix == false)
ftagius 0:3328df4c3116 248 {
ftagius 0:3328df4c3116 249 // first time fix obtained
ftagius 0:3328df4c3116 250 gpsFix = true;
ftagius 0:3328df4c3116 251 pc.printf("GPS fix obtained on %02d/%02d/20%02d_%02d:%02d:%02d (UTC)\r\n",gpsd.month,gpsd.day,gpsd.year,gpsd.hour,gpsd.minute,gpsd.seconds);
ftagius 1:10d2a051285e 252 //pc.printf("Touch slider to suspend application\r\n");
ftagius 0:3328df4c3116 253 pc.printf("Waiting for lighting detection...\r\n");
ftagius 0:3328df4c3116 254 }
ftagius 0:3328df4c3116 255
ftagius 0:3328df4c3116 256 //red = 1; // turn led off
ftagius 0:3328df4c3116 257 //pc.printf("turn green on\r\n");
ftagius 0:3328df4c3116 258 green = 0; // turn led on
ftagius 0:3328df4c3116 259 wait_ms(50);
ftagius 0:3328df4c3116 260 }
ftagius 0:3328df4c3116 261 else
ftagius 0:3328df4c3116 262 {
ftagius 3:e3974328d808 263 gpsFix = false;
ftagius 0:3328df4c3116 264 pc.printf("Waiting for GPS FIX\r\n");
ftagius 0:3328df4c3116 265 red = 0; // turn led on
ftagius 0:3328df4c3116 266 }
ftagius 0:3328df4c3116 267
ftagius 0:3328df4c3116 268 // restart the timer for the gps print loop
ftagius 0:3328df4c3116 269 // writeLogFile(-2);
ftagius 0:3328df4c3116 270 refresh_Timer.reset();
ftagius 0:3328df4c3116 271 }
ftagius 0:3328df4c3116 272 else
ftagius 0:3328df4c3116 273 {
ftagius 0:3328df4c3116 274 //red = 0; // turn led on
ftagius 0:3328df4c3116 275 //pc.printf("turn green off\r\n");
ftagius 0:3328df4c3116 276 green = 1; // turn green led off
ftagius 1:10d2a051285e 277 #if 0
ftagius 0:3328df4c3116 278 // check the slider. if touched, disable lighting interrupts and wait for another slider touch
ftagius 0:3328df4c3116 279 if (tsi.readPercentage())
ftagius 0:3328df4c3116 280 {
ftagius 1:10d2a051285e 281 //IntLightning.disable_irq();
ftagius 0:3328df4c3116 282 pc.printf("Touch slider to continue application\r\n");
ftagius 0:3328df4c3116 283 while (1)
ftagius 0:3328df4c3116 284 {
ftagius 0:3328df4c3116 285
ftagius 0:3328df4c3116 286 green = 1; // turn led off
ftagius 0:3328df4c3116 287 wait_ms(200);
ftagius 0:3328df4c3116 288 // break of of the loop if the slider is touched
ftagius 0:3328df4c3116 289 if (tsi.readPercentage())
ftagius 0:3328df4c3116 290 {
ftagius 0:3328df4c3116 291 green = 1;
ftagius 0:3328df4c3116 292 red = 1;
ftagius 0:3328df4c3116 293 pc.printf("Now monitoring for lightning strikes\r\n");
ftagius 1:10d2a051285e 294 //IntLightning.enable_irq();
ftagius 0:3328df4c3116 295 break;
ftagius 0:3328df4c3116 296 }
ftagius 0:3328df4c3116 297 green = 0; // turn led on
ftagius 0:3328df4c3116 298 wait_ms(200);
ftagius 0:3328df4c3116 299 // break of of the loop if the slider is touched
ftagius 0:3328df4c3116 300 if (tsi.readPercentage())
ftagius 0:3328df4c3116 301 {
ftagius 0:3328df4c3116 302 green = 1;
ftagius 0:3328df4c3116 303 red = 1;
ftagius 0:3328df4c3116 304 pc.printf("Now monitoring for lightning strikes\r\n");
ftagius 1:10d2a051285e 305 //IntLightning.enable_irq();
ftagius 0:3328df4c3116 306 break;
ftagius 0:3328df4c3116 307 }
ftagius 0:3328df4c3116 308
ftagius 0:3328df4c3116 309 } // end while 1 for slider
ftagius 0:3328df4c3116 310 } // end if tsi read
ftagius 1:10d2a051285e 311 #endif
ftagius 0:3328df4c3116 312 } // end else refresh timer
ftagius 0:3328df4c3116 313
ftagius 0:3328df4c3116 314 }
ftagius 0:3328df4c3116 315
ftagius 0:3328df4c3116 316
ftagius 0:3328df4c3116 317
ftagius 0:3328df4c3116 318 }