Nathan Ewin / Mbed 2 deprecated LogData_UM6-to-SDcard

A project similar to http://mbed.org/users/lhiggs/code/UM6_IMU_AHRS_2012/, where I'm trying to log data from a UM6 (CH Robotics orientation sensor) and a GPS transceiver to an sd card. I've adapted LHiggs code to include ModGPS. For sum reason a soon as I pick up a gps signal the UM6 data freezes i.e. the time and gps signals continue to print out but the UM6 signals fixes on a single value.

Dependencies:   MODGPS MODSERIAL SDFileSystem mbed

Diff: main.cpp

Revision:
3:b3358ec2f57c
Parent:
2:4a6e89c2d82a
Child:
4:8dcf0bdc25c8
--- a/main.cpp	Thu May 23 15:02:07 2013 +0000
+++ b/main.cpp	Thu May 23 20:24:19 2013 +0000
@@ -1,15 +1,21 @@
 #include "mbed.h"
+#include "SDFileSystem.h"
 
 //------------ system and interface setup ----------------------------//
 LocalFileSystem local("local");  // sets up local file on mbed
 Serial pc(USBTX, USBRX);  // sets up serial connection to pc terminal
 
 //------------ Hardware setup ----------------------------------------//
-DigitalOut myled(LED1);   // debug LED
+DigitalOut led1(LED1);    // debug LED
 DigitalIn enable(p10);    // enable signal for logging data to file
+AnalogIn log1(p18);       // dummy log signal1
+AnalogIn log2(p19);       // dummy log signal2
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
+
 
 //------------ interrupt and variable setup --------------------------//
 Ticker tick;
+Timer t;
 int counter=0;
 int flag=0;
 
@@ -22,21 +28,31 @@
 //============= Main Program =========================================//
 int main() {
     pc.baud(115200);  // baud rate to pc interface
-    FILE *fp = fopen("/local/ticker4.txt", "w");
-
+    
+    //---------- setup sd card -----------------------------// 
+    mkdir("/sd/mydir", 0777);    
+    FILE *fp = fopen("/sd/mydir/sdtest.csv", "w");
+    if(fp == NULL) {
+        error("Could not open file for write\n");
+    }
+//    FILE *fp = fopen("/local/ticker4.csv", "w");
+    fprintf(fp,"time,counter,log1,log2 \r");
+     
+    t.start();
     tick.attach(&LogData, 0.01); // attaches LogData function to 'tick' ticker interrupt every 0.5s
 
     while(1) {
-        while(enable) {
             if(flag==1) {  // prints counter value every interrupt raises flag
-                myled=1;
-                fprintf(fp,"%d \n",counter);
-                pc.printf("%d \n",counter);
+                led1=1;              
+                fprintf(fp,"%.3f,%d,%f,%f \r",t.read(),counter,log1,log2);
+                pc.printf("%.3f, %d, %f, %f \n",t.read(),counter,log1,log2);
                 flag=0;
             }    // end if(flag=1) loop
-        }       // end while(enable) loop
+         
+            if(enable==0) {       
+            break;             // breaks while loop in enable switched off
+            }
+    } // end while(1) loop
     fclose(fp);
-    myled=0; // turns off LED when enable switch off
-    counter=0; // resets counter
-    } // end while(1) loop
+    led1=0; // turns off LED when enable switch off
 } // end main() loop