Link error for MIPI_Camera on RPi4 + Ubuntu18.04

[RedMarsBlueMoon]

Hello!

I’m trying to build the ‘MIPI_Camera’ test programs on my RPi4 running Ubuntu18.04.
But when I make I get the error message,

/usr/bin/ld: skipping incompatible //usr/lib/libarducam_mipicamera.so when searching for -larducam_mipicamera

I did run the install and I can see the file there and can ls the above path+name.

Do I need to compile that library because I’m on Ubuntu?

Cheers

[RedMarsBlueMoon]

Btw, I am using the ‘arm64’ version of the ubuntu server for Pi4.

[RedMarsBlueMoon]

Ok…so after some investigation I thought to check the file type of ‘libarducam_mipicamera.so’ using the ‘file’ command.

This returns:

libarducam_mipicamera.so: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, BuildID[sha1]=f89d2154b7f02d1316e686329ec018b82f89082d, not stripped

 

Soo0…that means that the file is of a 32bit architechture build? Is that correct?

And I am trying to build it on a  64bit version of Ubuntu. So can that be the source of the link error?

 

[bin]

Hello,

The libarducam_mipicamera.so is compiled on Raspibian system,which is not compatible with the Ubuntu system. we will try to recompiled the so file on ubuntu system.

[RedMarsBlueMoon]

 

Thank you that would be much appreciated!

Just so that you know, I did just install the 32bit version of Ubuntu18.04 for the Raspberry and it seems like iv’e manage to build the MIPI_Camera examples.

But when I run them I just get some messages like,

> ./preview-camera0

Open camera…
can’t open /dev/gpiomem
Couldn’t open I2C device
init camera status = 4097

 

and

> sudo ./preview-camera0

Open camera…
init camera status = 4100

 

But no streaming images. I tried some of the other programs too but without success.

I also thought maybe I attached the camera wrong and swapped the direction of the brown strip/band. But no success either way.

 

 

[RedMarsBlueMoon]

Just read someone else’s post so also did,

> sudo ./camera_i2c

setting GPIO for board revsion: b03111
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)
./camera_i2c: 125: ./camera_i2c: gpio: not found
./camera_i2c: 126: ./camera_i2c: gpio: not found
./camera_i2c: 127: ./camera_i2c: gpio: not found
./camera_i2c: 128: ./camera_i2c: gpio: not found
./camera_i2c: 130: ./camera_i2c: gpio: not found
./camera_i2c: 131: ./camera_i2c: gpio: not found
./camera_i2c: 132: ./camera_i2c: gpio: not found
./camera_i2c: 133: ./camera_i2c: gpio: not found
./camera_i2c: 137: ./camera_i2c: ./rpi3-gpiovirtbuf: Permission denied
./camera_i2c: 140: ./camera_i2c: i2cdetect: not found

[bin]

Hi,

For Pi4 platform Please try those commands

cd /tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
[email protected]:~/MIPI_Camera/RPI $ chmod +x enable_i2c_vc.sh
[email protected]:~/MIPI_Camera/RPI $ ./enable_i2c_vc.sh

[bin]

Hi,

For Pi4 platform Please try those commands

cd /tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
[email protected]:~/MIPI_Camera/RPI $ chmod +x enable_i2c_vc.sh
[email protected]:~/MIPI_Camera/RPI $ ./enable_i2c_vc.sh

[RedMarsBlueMoon]

 

Hi!

Thanks for that! I had started looking for ‘gpio’ but realized it has been deprecated.

I tried your download but when running  ./camera_i2c  I get this:

setting GPIO for board revsion: b03111
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
gpio: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28′ not found (required by /usr/lib/libwiringPi.so)
./camera_i2c: 137: ./camera_i2c: ./rpi3-gpiovirtbuf: Permission denied
./camera_i2c: 140: ./camera_i2c: i2cdetect: not found

 

I looked at the Ubuntu site for a  ‘libc-2.28.so’ but I haven’t found one. And it sounds like a pretty crucial library for the OS so it might not even be a good idea to try to swap.

I did try to do a sneaky symbolic link to pretend I had that file but it didn’t work.

There seem to be some alternatives to gpio around. Maybe its time to upgrade to a more multi platform tool? 🙂

 

 

 

 

[RedMarsBlueMoon]

Sorry, I did start by running ./enable_i2c_vc.sh  + rebooting. But nothing seemed to have changed.

[RedMarsBlueMoon]

test

[RedMarsBlueMoon]

There seems to be something wron with the forum code/server. I keep sending messages but they are not showing.

[RedMarsBlueMoon]

So, instead I just build ‘gpio’ from this source,
https://github.com/WiringPi/WiringPi

Then installed ‘rpi3-gpiovirtbuf’ from https://github.com/6by9/raspiraw

and
> sudo apt-get install i2c-tools for ‘i2cdetect’

Then tried again. I first had to do
> sudo chmod a+r /dev/vcio
as I got an Permission error. Probably not a good thing to do.

finally
> ./camera_i2c
setting GPIO for board revsion: b03111
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)
Set state of 133 to 1
Error: Could not open file /dev/i2c-0' or/dev/i2c/0′: No such file or directory

I do have an ‘/dev/i2c-1’
but if I run
> sudo i2cdetect -y 1

I only get empty (–) fields in the grid.

 

Here’s a picture of the hardware

 

 

[RedMarsBlueMoon]

I later on decided to build ‘gpio’ from source instead (from original authors git).

I also got the ‘rpi3-gpiovirtbuf’ program, from https://github.com/Hermann-SW/raspiraw.

Then I ran the ‘camera_i2c’ script again.

I manage to clear all error messages, but I still didn’t get any images from the camera.

 

I don’t actually seem to be able to get any proof that the camera is being registered correctly at all.

Here’s a picture of my hardware

[RedMarsBlueMoon]

Ok, so instead I just built ‘gpio’ from this source,

https://github.com/WiringPi/WiringPi

then installed ‘rpi3-gpiovirtbuf’  from    https://github.com/6by9/raspiraw

and finally did

> sudo apt-get install i2c-tools for ‘i2cdetect’

 

I then run

> ./camera_i2c

but just get:

setting GPIO for board revsion: b03111
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)
error: open: /dev/vcio: Permission denied
Error: Could not open file /dev/i2c-0' or/dev/i2c/0′: No such file or directory

 

Still, maybe progress of sorts!?

 

 

 

 

 

 

 

[RedMarsBlueMoon]

(Iv’e recently had several failed attempts to post)

 

So, I ended up building ‘gpio’ from source, from the authors git repo.

I got the ‘rpi3-gpiovirtbuf’ from this place, https://github.com/Hermann-SW/raspiraw

I then ran the ‘camera_i2c’ script again and got no error messages.

But still no images from the camera.

 

I can’t even get a proof that the camera is correctly registered on the Pi.

[bin]

Hello,

Please test it on raspbian system instead of Ubuntu system. When I have time. I will test it on ubuntu system.

[RedMarsBlueMoon]

Hi,

I now have a fresh Raspbian Buster card I can boot from and have tested there.

Boot config,

gpu_mem=128

dtparam=i2c_vc=on

> ls /dev/i2c-*

/dev/i2c-0  /dev/i2c-1

> ./preview-camera0

Open camera…
init camera status = 4100

(and nothing else happens)

>./camera_i2c

setting GPIO for board revsion: b03111
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)
Set state of 133 to 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: — — — — — — — — — — — — —
10: — — — — — — — — — — — — — — — —
20: — — — — — — — — — — — — — — — —
30: — — — — — — — — — — — — — — — —
40: — — — — — — — — — — — — — — — —
50: — — — — — — — — — — — — — — — —
60: — — — — — — — — — — — — — — — —
70: — — — — — — — —

Could it maybe be something wrong with the camera do you think?

[RedMarsBlueMoon]

Oh I just had the camera connected the wrong way around!

As you can see from the picture higher up!  🙂

I get a good picture with ‘preview_setMode’.

But ‘preview’ does not work.

I do get the mmal lens shading error.

This is great!  I will try with Ubuntu again over the weekend!

[RedMarsBlueMoon]

I have tried it again on Ubuntu but can’t get it to work there.

[bin]

Hello,

Great to hear it can work on raspbian system, it does not work on ubuntu which is normal due to the system is not compatible, As I have said to you, our dynamic link library is compiled based on raspbian system instead of ubuntu.

Recently, we will try to compiled it on ubuntu system.

 

[RedMarsBlueMoon]

I’m happy to continue with Raspbian!

So if it’s just me that’s asking about Ubuntu, then please don’t worry!

I’m fine now.

[bin]

Great, thanks for your patient.

[Author]

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