Diff: main.cpp

Revision:

0:4b5874bff9bb

Child:

1:4284f27d638d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jul 14 09:35:12 2014 +0000
@@ -0,0 +1,94 @@
+#include "mbed.h"
+#include "Flipper.h"
+
+// The following parameters can be changed by serial commands:
+// NOTE: program 9 on the LCC-230 gives a freq of 150Hz. If frame rate for the camera is 30fps, then the nb of cycles per frame is 150/30=5
+// for 28.09, then the of cycles per frame is 150/28.09=5.339
+float CAMERA_FPS=15;//28.0915;//28.09;
+unsigned long CAMERA_TRIGGER_PERIOD=1000000.0/CAMERA_FPS;
+float EXPOSURE_TIME_FACTOR=1.0/4;
+unsigned long EXPOSURE_TIME=EXPOSURE_TIME_FACTOR*CAMERA_TRIGGER_PERIOD;
+
+float NB_CYCLES_PER_EXPOSURE_TIME=4;//5.339;//1;//1.0*150/28; // this is the nb of cycles of the led during one camera frame
+float NB_CYCLES_PER_CAMERA_FRAME=1.0/EXPOSURE_TIME_FACTOR*NB_CYCLES_PER_EXPOSURE_TIME;
+
+unsigned long LED_PERIOD=1000000.0/(NB_CYCLES_PER_CAMERA_FRAME*CAMERA_FPS); //in us
+
+unsigned int NB_FRAMES_TOGGLE_QP=1; // this is the nb of camera frames before toggling the modulation (note: there is no synchronization!)
+
+enum SignalMode {PHASE=0, QUADRATURE, TOGGLE_PHASE_QUADRATURE};
+SignalMode currentSignalMode=TOGGLE_PHASE_QUADRATURE; //NOTE: all the leds mode affected by this at the same time
+
+Trigger cameraTrigger(cameraTriggerPin,1.0*CAMERA_FPS,(unsigned int)EXPOSURE_TIME);
+Flipper ledSource(ledPin, LED_PERIOD);
+Shutter lcdShutter(shutterPin, LED_PERIOD);
+
+Serial pc(USBTX, USBRX); // tx, rx
+void processSerial();
+
+int main()
+{
+    pc.baud(9600);
+
+
+    cameraTrigger.setQPToggleFrames(NB_FRAMES_TOGGLE_QP);
+    cameraTrigger.start();
+    
+    ledSource.start();
+    
+    // add some delay:
+    wait_us(5000);
+    lcdShutter.mixSignal(false);
+    lcdShutter.start();
+
+    // spin in a main loop. flipper will interrupt it to call flip
+    while(1) {
+        processSerial();
+    }
+}
+
+// String to store ALPHANUMERIC DATA (i.e., integers, floating point numbers, unsigned ints, etc represented as DEC) sent wirelessly:
+char incomingValue[5];
+char incomingByte;
+char indexString=0;
+
+void processSerial()
+{
+
+    while(pc.readable()>0) {
+        char incomingByte =pc.getc();
+
+        if (incomingByte >='0' && incomingByte <='9') {
+            incomingValue[indexString]=incomingByte;
+            indexString++;
+        } else { // check for terminator (i.e. "CONTROL CODES"):
+            if (incomingByte=='P') {
+                currentSignalMode=PHASE;
+                cameraTrigger.toggleQP(false);
+                ledSource.flip();
+            } else if (incomingByte=='Q') {
+                currentSignalMode=QUADRATURE;
+                cameraTrigger.toggleQP(false);
+                ledSource.flip();
+            } else if (incomingByte=='T') {
+                currentSignalMode=TOGGLE_PHASE_QUADRATURE; // periodic toogling (every a TOGGLE_QP_PERIOD)
+                cameraTrigger.toggleQP(true);
+            } else if (incomingByte=='s') { // simulated shutter OFF
+                lcdShutter.mixSignal(false);
+            } else if (incomingByte=='S') { // simulated shutter ON
+                lcdShutter.mixSignal(true);
+            
+            // CAMERA PARAMETERS:
+            } else if (incomingByte == 'F') { // camera frame rate
+                incomingValue[indexString]=0; // termination for the string
+                indexString=0;
+                cameraTrigger.setFrameRate(atoi(incomingValue));   
+            } else if (incomingByte == 'E') { // control Exposure time:
+                incomingValue[indexString]=0; // termination for the string
+                indexString=0;
+                cameraTrigger.setExposure(atoi(incomingValue));
+            }
+            
+        }
+    }
+}
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