Diff: main.cpp

Revision:

6:059312376781

Parent:

5:6532c5a5f576

Child:

7:a125a1fa4694

--- a/main.cpp	Wed Mar 23 14:32:41 2016 +0000
+++ b/main.cpp	Thu Mar 31 19:54:14 2016 +0000
@@ -7,6 +7,7 @@
 
 #define NUM_PIXELS 2048
 #define BUF_SIZE 1024
+#define SPECTROMETER_TIMEOUT 1000
 
 // TODO make a new file (name=timestamp) each time we start recording data
 #define OUTPUT_FILE "/sd/data.csv"
@@ -49,14 +50,20 @@
 void read_pixels()
 {
     char data[NUM_PIXELS];
+    int cycles_waited = 0;
     for (int i = 0; i < NUM_PIXELS; i++) {
-
-        while (!pixel_rdy);
-
+        while (!pixel_rdy) {
+                cycles_waited++;
+                if (cycles_waited > SPECTROMETER_TIMEOUT)
+                    break;
+            }
         fifo_cs = 0;
         data[i] = spi.write(0x00); // write a dummy byte just to read the data
         fifo_cs = 1;
 
+        if (cycles_waited > SPECTROMETER_TIMEOUT)
+            pc.printf("timed out\r\n");
+        cycles_waited = 0;
     }
 
     // write to file and pc
@@ -68,7 +75,7 @@
     pc.printf("\r\n");
     fprintf(fpData, "\r\n");
     fclose(fpData);
-    
+    pc.printf("here4\r\n");
     XBeeSend((const char *)data, 2048);
 }
 
@@ -121,20 +128,22 @@
         led = !led;
 
 //        gps_read();
-        
+        pc.printf("here\r\n");
         check_temp();
+        pc.printf("hereagain\r\n");
         // Display result
         pc.printf(",%s", TempCelsiusDisplay);
         fpData = fopen(OUTPUT_FILE, "a");
         fprintf(fpData, ",%s", TempCelsiusDisplay);
         fclose(fpData);
 
-        // Trigger an acquisition from spectrometer
+        pc.printf("hereagain2\r\n");
+                // Trigger an acquisition from spectrometer
         trigger = 1;
         wait_ms(1);
         trigger = 0;
         read_pixels();
-
+        pc.printf("hereagain3\r\n");
         wait(0.5f);
     }
 }
\ No newline at end of file