Revision 10:078891935385, committed 2013-04-18

Comitter:

dannyman939

Date:

Thu Apr 18 00:59:49 2013 +0000

Parent:

9:13724ed3f825

Commit message:

Hardware trigger camera using the DigitalOut of Pin 2

Changed in this revision

--- a/PCMessaging.h	Wed Apr 17 13:50:21 2013 +0000
+++ b/PCMessaging.h	Thu Apr 18 00:59:49 2013 +0000
@@ -8,6 +8,7 @@
 const unsigned char  STOPSTREAM_MSG     =5;
 const unsigned char  STARTLOGINFO_MSG   =6;
 const unsigned char  STOPLOGINFO_MSG    =7;
+const unsigned char  SEND_TRIG          =8;
 
 const double  DEGREES_TO_RADIANS = acos(-1.0)/180.0;
 const double eccen          = 0.0818191908426;  //WGS84 earth eccentricity
@@ -25,9 +26,10 @@
 bool logMsgInfo     =false;
 bool sendLogMsgInfo =false;
 bool recordData     =false;
+bool camtrg         =false;
 
 
-const unsigned char numMessages = 8;    //number of potential messages
+const unsigned char numMessages = 9;    //number of potential messages
 char msgList[numMessages][32];          //text array storing the command messages from the PC
 char minMessageSize = 11;               //minimum size of a text message
 unsigned char CR = 0x0d;                //ASCII Carriage Return
@@ -44,6 +46,7 @@
     sprintf(msgList[STOPSTREAM_MSG],    "WMsg POSSTREAM N");
     sprintf(msgList[STARTLOGINFO_MSG],  "WMsg LOGINFO Y");
     sprintf(msgList[STOPLOGINFO_MSG],   "WMsg LOGINFO N");
+    sprintf(msgList[SEND_TRIG],         "WMsg SEND_TRIG");
     //message length is from 10 to 16 chars
     
     toPC.printf(" finished setting up messages \n");
@@ -116,7 +119,10 @@
                     case STOPLOGINFO_MSG:
                         logMsgInfo = (m == STARTLOGINFO_MSG);
                         sendLogMsgInfo = true;
-                    break;  
+                    break;
+                    case SEND_TRIG:
+                        camtrg = true;  //send a posvel message back to PC
+                    break; 
                 }  //end Switch statement
                 break;
             } //end test for a valid message
@@ -213,6 +219,12 @@
         //we should put the below stuff into the readPC() procedure.
         //only do these actions in response to a command so no need for the tests w/o an inoput byte from the PC
         //perform the activities as a response to the commands
+        
+        if (camtrg)  //true if camera trigger command sent from PC
+        {
+            camera1EventDetected=true;
+            
+        }
         if (sendPosVel)  //true if we want to return a position solution
         {
             sendPosVel=false; //set to true if a POSVEL is requested from the PC

--- a/main.cpp	Wed Apr 17 13:50:21 2013 +0000
+++ b/main.cpp	Thu Apr 18 00:59:49 2013 +0000
@@ -14,7 +14,7 @@
 DigitalOut ppsled(LED1);        //blink an LED at the 1PPS
 DigitalOut trig1led(LED2);      //blink an LED at the camera trigger detection
 DigitalOut recordDataled(LED4); //set the led when the record is on
-InterruptIn camera1Int(p30);    // camera interrupt in
+//InterruptIn camera1Int(p30);    // camera interrupt in
 DigitalOut camera2Pin(p29);     // We dont use the second camera interrupt
 //USB serial data stream back to the PC
 Serial toPC(USBTX, USBRX);      //connect the GPS TX, RX to p9 and p10
@@ -65,15 +65,15 @@
 };
 
 //ISR for detection of the hotshoe trigger 1
-void camera1ISR(void)
-{
+//void camera1ISR(void)
+//{
     //GPSTime is from POS message header
     //PPSTimeOffset is an even sec to account for Time becoming known AFTER the 1PPS
     //PPSTimeOffset + timeFromPPS.read() can be as large as 1.02 secs
-    camera1Time = GPSTime + PPSTimeOffset + timeFromPPS.read();    
-    camera1EventDetected = true;  //reset to false in main after processing the image detection
-    trig1led = !trig1led;  //blink an LEWD at the camera event detection
-};
+//    camera1Time = GPSTime + PPSTimeOffset + timeFromPPS.read();    
+//    camera1EventDetected = true;  //reset to false in main after processing the image detection
+//    trig1led = !trig1led;  //blink an LEWD at the camera event detection
+//};
 
 ///////////////////////////////////////////////////////
 //set up the USB port and the GPS COM port
@@ -171,10 +171,10 @@
 
 void setupTriggers()
 {
-    camera1Int.mode(PullUp);
+//    camera1Int.mode(PullUp);
     camera2Pin = 1;
     //establish Trigger ISR 
-    camera1Int.rise(&camera1ISR);
+//    camera1Int.rise(&camera1ISR);
     
 };
 
@@ -352,7 +352,14 @@
         
         if (camera1EventDetected)  //we have detected a camera trigger event
         {
+            camera2Pin=0;
+            wait(.25);
+            camera2Pin=1;
+            wait(.50);
+            camera2Pin=0;
+            camera1Time = GPSTime + PPSTimeOffset + timeFromPPS.read();
             toPC.printf("WMsg TRIGGERTIME %5.3lf\n", camera1Time);
+            camera2Pin=1;
             camera1EventDetected = false;
         }