Blackfly - CYLOD

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Point Grey <strong>Blackfly</strong> Technical Reference Appendix C: FlyCapture API Code Examples Appendix C: FlyCapture API Code Examples C.1 Example: Setting a GPIO Pin to Strobe Using the FlyCapture API The following FlyCapture 2.x code sample uses the C++ interface to do the following: • Configures GPIO1 as the strobe output pin. • Enables strobe output. • Specifies an active high (rising edge) strobe signal. • Specifies that the strobe signal begin 1 ms after the shutter opens. • Specifies the duration of the strobe as 1.5 ms. Assuming a Camera object cam: StrobeControl mStrobe; mStrobe.source = 1; mStrobe.parameter = 0; mStrobe.onOff = true; mStrobe.polarity = 1; mStrobe.delay = 1.0f; mStrobe.duration = 1.5f cam.SetStrobeControl(&mStrobe); C.2 Example: Setting a Standard Video Mode, Format and Frame Rate Using the FlyCapture API The following FlyCapture code snippet sets the camera to: 640x480 Y8 at 60 FPS. Camera.SetVideoModeandFrameRate( VIDEOMODE_640x480Y8 , FRAMERATE_60 ); C.3 Example: Asynchronous Hardware Triggering Using the FlyCapture API The following FlyCapture 2.x code sample uses the C++ interface to do the following: • Sets the trigger mode to Trigger Mode 0. • Configures GPIO0 as the trigger input source. • Enables triggered acquisition. • Specifies the trigger signal polarity as an active high (rising edge) signal. Assuming a Camera object cam: Revised 12/13/2012 Copyright ©2012 Point Grey Research Inc. 76
Point Grey <strong>Blackfly</strong> Technical Reference Appendix C: FlyCapture API Code Examples TriggerMode mTrigger; mTrigger.mode = 0; mTrigger.source = 0; mTrigger.parameter = 0; mTrigger.onOff = true; mTrigger.polarity = 1; cam.SetTriggerMode(&mTrigger); C.4 Example: Setting Brightness Using the FlyCapture API The following FlyCapture 2.0 code snippet adjusts brightness to 0.5% using the C++ interface. The snippet assumes a Camera object cam. //Declare a Property struct. Property prop; //Define the property to adjust. prop.type = BRIGHTNESS; //Ensure the property is set up to use absolute value control. prop.absControl = true; //Set the absolute value of brightness to 0.5%. prop.absValue = 0.5; //Set the property. error = cam.SetProperty( &prop ); C.5 Example: Setting Shutter Using the FlyCapture API The following FlyCapture 2.0 code snippet adjusts the shutter speed to 20 ms using the C++ interface. The snippet assumes a Camera object cam. //Declare a Property struct. Property prop; //Define the property to adjust. prop.type = SHUTTER; //Ensure the property is on. prop.onOff = true; //Ensure auto-adjust mode is off. prop.autoManualMode = false; //Ensure the property is set up to use absolute value control. prop.absControl = true; //Set the absolute value of shutter to 20 ms. Revised 12/13/2012 Copyright ©2012 Point Grey Research Inc. 77
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