I can’t receive images with a single external trigger
I am using Jetson Nano and MIPI-CSI cameras to make an image inspection device for use in machine tools.
The capture timing is an external trigger from the machine tool.
The external trigger is input directly to the camera.
I am developing an application using V4L2.
- Capture images with an external trigger
- Inspect the image
- Send the inspection result to the machine tool
I can’t receive images with one external trigger.
(1) ioctl VIDIOC_REQBUFS (memory = V4L2_MEMORY_MMAP)
(2) ioctl VIDIOC_QUERYBUF
(3) ioctl VIDIOC_QBUF
(4) ioctl VIDIOC_STREAMON
(6) ioctl VIDIOC_DQBUF
(7) ioctl VIDIOC_QBUF
One external trigger does not return from (5) “Select”.
I don’t use streaming features.
I need to check in sync with an external trigger.
I appreciate your cooperation.