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Mv series camera appnotes 4 rpi (view source)
Revision as of 16:28, 14 April 2022
, 16:28, 14 April 2022→Save image to file
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<code>v4l2-ctl --set-selection=target=crop,top=0,left=0,width=3088,height=2064</code>
<code>v4l2-ctl --set-selection=target=crop,top=0,left=0,width=3088,height=2064</code>
+===== Frame rate statistics =====
In streaming mode, the following commands can be used for frame rate statistics.
In streaming mode, the following commands can be used for frame rate statistics.
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<code>./yavta -c1 -Fy8-3104x2064.yuv --skip 0 -f Y8 -s 3088x2064 /dev/video0</code>
<code>./yavta -c1 -Fy8-3104x2064.yuv --skip 0 -f Y8 -s 3088x2064 /dev/video0</code>
−PS.This y8 file can be used with this player: [https://yuv-player-deluxe.software.informer.com/2.6/ YUV Displayer Deluxe].
+PS. This y8 file can be used with this player: [https://yuv-player-deluxe.software.informer.com/2.6/ YUV Displayer Deluxe].
Since the memory requested by Raspberry Pi for the image, the width is 32-align and the height is 16-align, the 3088*2064 image will be saved as 3104*2064 size.
Since the memory requested by Raspberry Pi for the image, the width is 32-align and the height is 16-align, the 3088*2064 image will be saved as 3104*2064 size.
+==== Trigger mode ====
+===== Set ROI =====
+Take MV-MIPI-IMX178M, 3088*2064 as an example.
+<code>v4l2-ctl --set-selection=target=crop,top=0,left=0,width=3088,height=2064</code>
+
+===== Software trigger mode =====
+
+====== Set mode ======
+<code>v4l2-ctl --set-ctrl <small>trigger_mode=1</small></code>
+
+<code>v4l2-ctl --set-ctrl <small>trigger_src=0</small></code>
+
+====== Start acquisition ======
+<code>v4l2-ctl --set-fmt-video=width=3088,height=2064,pixelformat=GREY --stream-mmap --stream-count=5 --stream-to=y8-3104x2064.yuv</code>
+
+====== Perform soft trigger operation ======
+In other shell terminals, you can execute the following command multiple times for multiple triggers.
+
+<code>v4l2-ctl --set-ctrl <small>soft_trgone=1</small></code>
+
+Notes: The first image triggered in this way cannot be output and saved. ''I haven't found out why.''
+
+===== Hardware trigger mode =====
+The following is an example of using Raspberry Pi GPIO21 as an trigger source with rising edge trigger.
+
+You can use the [[Mv mipi i2c.sh user guide|mv_mipi_i2c.sh]] script for other trigger parameter setting.
+
+====== Hardware Connection ======
+(TODO picture)
+
+====== Set mode ======
+<code>v4l2-ctl --set-ctrl <small>trigger_mode=1</small></code>
+
+<code>v4l2-ctl --set-ctrl <small>trigger_src=1</small></code>
+
+====== Start acquisition ======
+<code>v4l2-ctl --set-fmt-video=width=3088,height=2064,pixelformat=GREY --stream-mmap --stream-count=5 --stream-to=y8-3104x2064.yuv</code>
+
+====== Perform hardware trigger operation ======
+<code>python gpio_trigger.py</code>
+
+Note: script [https://github.com/veyeimaging/mvcam_raspberrypi/tree/main/mv_tools_rpi link].
+<br />
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