Nathan Ewin
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
Revision 3:b3358ec2f57c, committed 2013-05-23
- Comitter:
- njewin
- Date:
- Thu May 23 20:24:19 2013 +0000
- Parent:
- 2:4a6e89c2d82a
- Child:
- 4:8dcf0bdc25c8
- Commit message:
- prints timer and counter to sd card and screen; (just added MODSERIAL library but not included in main)
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MODSERIAL.lib Thu May 23 20:24:19 2013 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/AjK/code/MODSERIAL/#ae0408ebdd68
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Thu May 23 20:24:19 2013 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4
--- 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