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
Diff: main.cpp
- Revision:
- 1:9fe40d9ac0f5
- Parent:
- 0:52295643d083
- Child:
- 2:4a6e89c2d82a
--- a/main.cpp Thu May 23 13:29:26 2013 +0000
+++ b/main.cpp Thu May 23 14:08:06 2013 +0000
@@ -1,18 +1,38 @@
#include "mbed.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
DigitalIn enable(p10); // enable signal for logging data to file
+//------------ interrupt and variable setup --------------------------//
+Ticker tick;
+int counter=0;
+int flag=0;
+
+//------------ LogData interrupt function ----------------------------//
+void LogData() {
+ counter++;
+ flag=1;
+}
+
+//============= Main Program =========================================//
int main() {
- while(1) {
- if(enable==1) {
- myled=1;
- wait(0.2);
- myled=0;
- wait(0.2);
- }
- }
-}
+ pc.baud(115200); // baud rate to pc interface
+ tick.attach(&LogData, 0.001); // 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;
+ pc.printf("%2d \n",counter);
+ flag=0;
+ } // end if(flag=1) loop
+ } // end while(enable) loop
+ myled=0; // turns off LED when enable switch off
+ counter=0; // resets counter
+ } // end while(1) loop
+} // end main() loop