Diff: main.cpp

Revision:

4:66eb0ab160b5

Parent:

3:466fdc08e0cd

--- a/main.cpp	Thu Mar 21 17:45:42 2019 +0000
+++ b/main.cpp	Thu Apr 04 18:06:06 2019 +0000
@@ -1,33 +1,100 @@
-#include <mbed.h>
+/*  Cosmic Ray Sheilding 
+    Date Created: Spring Semester 2019
+
+    Program to detect number of Geiger Counter hits and read data to SDcard
+    The time since program start and the voltage 
+    are written to a tab-delimited data file. 
+    SD pins: DI = p5, DO = p6, SCK = p7, CS = p8  
+*/ 
 
-InterruptIn geigerDelrin(p13); //Counter Serial Number:101
-InterruptIn geigerJello(p14); //Counter Serial Number:142
+#include "mbed.h" 
+#include "SDFileSystem.h" 
+#include "ExtendedTimer.h"
+
+InterruptIn geigerDelrin(p14); //Counter Serial Number Ending in:101
+InterruptIn geigerJello(p13); //Counter Serial Number Ending in:142
 Serial pc (USBTX, USBRX);
-Timer readPulse;
+SDFileSystem fs(p5, p6, p7, p8, "fs");
+DigitalOut doneLED(LED1); 
+
+ExtendedTimer t;
+Ticker sampleTime;
+Ticker saveTime;
 
 void countDelrinPulse(void); //Function called when Delrin Geiger reads pulse
 void countJelloPulse(void); //Function called when Jello Geiger reads pulse
 
 int jelloCount = 0;
 int delrinCount = 0;
+bool timeToSample;
+bool timeToSave;
 
-int main() {
-  geigerDelrin.fall(&countDelrinPulse); //Geiger counter reads a hit
-  geigerJello.fall(&countJelloPulse);
+    void triggerSample() {
+        timeToSave = true; // flag to save data
+    }
+ 
+    void triggerCollection() {
+        timeToSample = true; // flag to collect data
+    }
 
-  readPulse.start();
+int main(){     
+    //Geiger Counter Interrupts
+    geigerDelrin.fall(&countDelrinPulse); 
+    geigerJello.fall(&countJelloPulse);
+    
+    // Mount the filesystem 
+    bool mountFailure = fs.mount(); 
+
+    if (mountFailure != 0) { 
+        pc.printf("Failed to mount the SD card.\r\n"); 
+        return -1;  // ends program with error status 
+    } 
+    FILE* fp = fopen("/fs/log.txt","w"); 
+    if (fp == NULL) { 
+        pc.printf("Failed to open the file.\r\n"); 
+        fs.unmount(); 
+        return -1; 
+    } 
 
-  while (true){
-    if (readPulse > 60){ //Displays number of counts per 15 seconds
-      readPulse.reset();
-      pc.printf("Delrin Count: %d \r\n", jelloCount);
-      pc.printf("Jello Count: %d \r\n", delrinCount);
-      jelloCount = 0;
-      delrinCount = 0;
+    // Data header 
+    pc.printf("Time (s) \t Jello Count \t Delrin Count \r\n"); 
+    fprintf(fp, "Time (s) \t Jello Count \t Delrin Count \r\n");
+    
+    // Attach ISR(s) to tickers
+    sampleTime.attach(&triggerSample, 10); //Sample every 60 seconds
+    saveTime.attach(&triggerCollection, 30); //Save data every 5 minutes.
+    
+    timeToSample = true;
+    timeToSave = false;
+    
+    // Start the timer and ticker 
+    t.start();
+
+    while (t.read() < 18000) {    
+        if (timeToSample){ //Displays number of counts per 60 seconds
+            timeToSample = false;
+            pc.printf("%.2f \t\t %d \t\t %d \r\n",t.read(), jelloCount, delrinCount);
+            fprintf(fp, "%.2f \t\t %d \t\t %d \r\n",t.read(), jelloCount, delrinCount);
+            jelloCount = 0;
+            delrinCount = 0;
+        }
+        
+        if (timeToSave){ //Data will save every five minutes
+            timeToSave = false;
+            fclose(fp);
+            fp = fopen("/fs/log.txt","a");
+        }
     }
-  }
-}
+    
+    // Close file and unmount the file system 
+    fclose(fp); 
+    
+    fs.unmount(); 
+    // LED on indicates that it is safe to remove the SD card 
+    doneLED = 1; 
+} 
 
+//Incrementation of counts 
 void countDelrinPulse(void){
     delrinCount++;
 }