Arducam ov9281 UC-788 B0224 external trigger support

Raspberry Pi Cameras
1

  1. Where did you get the camera module(s)?

  2. Model number of the product(s)?

20230922
ACM-16886

  1. What hardware/platform were you working on?

Raspi4 bullseye kernel code branch is 6.1.y

  1. Instructions you have followed. (link/manual/etc.)

I patched ov9281.c driver following this datasheet https://www.v-visiontech.com/web/userfiles/download/OV9281_CSP5_DS_1.01.pdf
But external trigger does not work
I have tried this too ArduCAM/MIPI_Camera/ RPI/ov9281_external_trigger.c#L16
But no success…

  1. Problems you were having?

External trigger does not work

  1. The dmesg log from your hardware?

Log shows that driver is loaded, camera works fine in normal mode however does not work in external trigger mode as it is not supported in driver

  1. Troubleshooting attempts you’ve made?

I patched driver to use external trigger similar to this media: i2c: ov7251: Add module param to select ext trig mode · raspberrypi/linux@e6a7eed · GitHub

  1. What help do you need?

I need valid datasheet for camera so I can implement external trigger support in ov9281 driver
Or perhaps code that shows external trigger works

2

Hi,
The camera module you purchased does not support trigger mode. You might consider the one below:

4

Visually , this looks pretty much like a camera that I bought… Why do you say my camera does not support trigger mode? (It has same pins, same board, i.e. UC-788)
Here is my camera front back

Where can I find a driver for the camera you mentioned? Can this camera be used with RPI 4/5?