Posts by silverfly
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I surprisingly found a VisualApplets 3.0 's bug for CastBitWidth Operator.
For CastBItWidth operator, if I cast a negative numer to 64bit(just for 64 bit), then it would become -1 anyhow!
Subsequently, I tried the same operation in VisualApplets 2.2 version, and there's no problem.va3.0bug.JPG
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Sorry for late reply! Although I didn't find parameter StartAcquisition in GenICam explorer, I successfully used the SDK to solve this type of problem as Johannes says. Thank both of you very much!
Furthermore, if I don't want to waste resources to implement switch logic in FPGA, I use a physical SWITCH to link two cameras with VQ4 board. I wonder if there is any API to select one of cameras to acquire images.
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I tried your design but it still did not solve my problem. This time Cam1 can acquire images but Cam2 still can't get any picture. Whether I change the Source Selector online or stop acquisition and change it offline, the MicroDisplay just can not display the Cam2's image even can not start Cam2's acquisition. Because this design only have one DMA, so the MicroDisplay just have one display window and can only start Cam1's acquisition. I wonder if this is why Cam2 can not work.
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As shown, I use a sync operator to syncronize two cameras' acquisition and use case to switch acquisition between them. But when I downloaded the bitstream to VQ4 board, the module2 buffer got overflow very soon and finally timeout poped up. So where is the problem?