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by rcasiodu
Fri May 31, 2019 2:17 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to set I2C0 SDA0/SCL0 to GPIO0/1?
Replies: 8
Views: 1143

Re: How to set I2C0 SDA0/SCL0 to GPIO0/1?

Why the persistence with dt-blob-dualcam.dts? You're providing the GPU with duff configuration and then complaining it does funny things. The solution is not to provide it with duff configuration. If you persist with dt-blob-dualcam.dts then you'll still hit the same issue if you run vcgencmd get_c...
by rcasiodu
Thu May 30, 2019 2:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to set I2C0 SDA0/SCL0 to GPIO0/1?
Replies: 8
Views: 1143

Re: How to set I2C0 SDA0/SCL0 to GPIO0/1?

Dual-cam has defined two cameras, one connected to 0/1, and one connected to 28/29. It probes the first, remuxes to 28/29 and leaves it there. So if i have two cameras, the second will probes and the i2c bus will be i2c0 too? Can i2c0 be mapped to both 28/29 and 0/1? If using dt-blob-cam1.dts doesn...
by rcasiodu
Thu May 30, 2019 12:18 pm
Forum: Camera board
Topic: Raw sensor access / CSI-2 receiver peripheral
Replies: 531
Views: 158822

Re: Raw sensor access / CSI-2 receiver peripheral

Thanks 6by9, your answer are very helpfull. Now i understand the different and get more confidence about what i'm trying to do.
by rcasiodu
Thu May 30, 2019 12:01 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to set I2C0 SDA0/SCL0 to GPIO0/1?
Replies: 8
Views: 1143

Re: How to set I2C0 SDA0/SCL0 to GPIO0/1?

Hi 6by9, i'm a new guy to raspberry CM3 which is i used now. I has a pi-camera V1 which is ov5647. But i want to change the camera module to other sensor. At the first step, i found that i can enable the dual camera through dt-blob.bin and then i config the raspi-config to enable camera. I connet th...
by rcasiodu
Thu May 30, 2019 9:22 am
Forum: Camera board
Topic: Raw sensor access / CSI-2 receiver peripheral
Replies: 531
Views: 158822

Re: Raw sensor access / CSI-2 receiver peripheral

Thanks for your repply 6by9. One last question, after the conversion to CSI2, what do I need to do in order to access these port in the Raspberry? As far as I read, this port only supports the Raspberry Camera Module. You have two choices, both of them requiring some effort from you. First is that ...
by rcasiodu
Thu May 30, 2019 6:22 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to set I2C0 SDA0/SCL0 to GPIO0/1?
Replies: 8
Views: 1143

Re: How to set I2C0 SDA0/SCL0 to GPIO0/1?

See https://github.com/raspberrypi/linux/issues/2981 You've enabled startx which adds the camera. The V4L2 driver is now automatically probed on boot, therefore the GPU goes and muxes i2c0 to talk to the camera. Either remove start_x=1 because you don't actually want the camera, or blacklist bcm283...
by rcasiodu
Wed May 29, 2019 2:23 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to set I2C0 SDA0/SCL0 to GPIO0/1?
Replies: 8
Views: 1143

How to set I2C0 SDA0/SCL0 to GPIO0/1?

Hi Everyone, I convert the https://www.raspberrypi.org/documentation/hardware/computemodule/dt-blob-dualcam.dts to dt-blob.bin. pin@p0 { function = "input"; termination = "pull_up"; }; // CAMERA 0 I2C0 SDA pin@p1 { function = "input"; termination = "pull_up"; }; // CAMERA 0 I2C0 SCL pin@p28 { functi...
by rcasiodu
Tue May 28, 2019 3:15 am
Forum: Camera board
Topic: Inspecting Pi camera registers over I2C without need for logic analyzer
Replies: 5
Views: 768

Re: Inspecting Pi camera registers over I2C without need for logic analyzer

Hi HermannSW, I try to use your i2cread code to read the register of OV5647 sensor. I didnot run raspistill/raspivid before i2cread(i just try to read the default reg value in this way). I have test with "raspistill -o test.jpg" to make sure the hardware is working.(I add the dt-blob.bin from https:...

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