Strobe output to Pointgrey Firefly MV using libdc1394

Question

I use Pointgrey Firefly MV (more precisely, FFMV-03M2M / C) and I want to start some kind of external device every time the shutter starts. According to the technical description , the camera supports IIDC 1.31, and also provides four GPIOs that can be used as trigger and / or strobe outputs. As described in Section 4.11.3 of the IIDC Standard , it should be possible to configure these strobe outputs using IIDC.

My application is implemented in C ++ and uses libdc1394 to access and control the camera. So far, everything is working very well, but I can’t tune the strobe output. As far as I understand libdc and IIDC, it should be possible to include the first output as follows ( camerathis is a pointer to a valid one dc1394camera_t):

dc1394error_t err;
uint64_t strobe_offset = 0x200;
uint32_t strobe_settings = 0;

err = dc1394_get_strobe_register(camera, strobe_offset, &strobe_settings);
if (err == DC1394_SUCCESS) {
    /* Set bits 6 (strobe on) and 7 (active-high level)
       IIDC uses msb 0, so we need to shift by 25/24 instead of 6/7 */
    strobe_settings = strobe_settings | (1 << 25) | (1 << 24);

    err = dc1394_set_strobe_register(camera, strobe_offset, strobe_settings);

}

if (err != DC1394_SUCCESS) {
    log(LOG_ERROR, "Failed to set strobe.");
}

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Answer 1

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http://ptgrey.com/support/downloads/documents/TAN2005002_Output_strobe_signal_pulse.pdf

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