37 QuickCam User’s Manul03-032-10187-04 DALSA corp.Selects the input associated with the label I4.Input 5 ConfigurationSelects the input associated with the label I5.Input 6 ConfigurationSelects the input associated with the label I6.Input 7 ConfigurationSelects the input associated with the label I7.LUT ProgramThe GPIO Control Block is programmed using a simple, yet very flexiblelanguage.By default, the GPIO Control Block will not generate output signals, regardless ofthe state of the input signals. The program consists of zero or more lines thatspecify how an output signal is generated based on the input signals. Basicallyeach line of the program has the following format:Qn = n>Therefore, a program line can range from a simple redirection from one input toone output, to a complex logical expression of two or more input signals.The language uses generic labels for inputs and outputs.To configure the GPIO Look-Up Table from the user interface or SDK functions,use the language described in GPIO Control Block Programming Language.6.5 Pulse GeneratorTo configure the Pulse Generator, click the Advanced… button on theExposure/GPIO tab in the Camera Configuration dialog box and open theDevice Features tab.The Pulse Generators are located on the Device Features tab.The behavior of the Pulse Generator is defined by their delay and width. Thedelay is the amount of time the pulse is inactive prior to the pulse, and the widthis the amount of time the pulse is active.The Pulse Generator signals can be set in either triggered or periodic mode. Intriggered mode, the pulse generator is triggered by either the rising edge or highlevel of the input signal. When triggered, the pulse generator is inactive for theduration of the delay, then active for the duration of the width. After that, it willbecome inactive until the next trigger occurs. If a trigger occurs while pulsegenerator is already handling a previous trigger, the new trigger is ignored.In periodic mode, the trigger continuously generates a signal that is based on theconfigured delay and width. The period of the pulse is therefore the delay timeplus the width time.
