Installation fails for CAN-HAT on RPI3

[terilenard]

Configuration:

• RaspberryPi 3
• Kernel: 4.19.118-v8+
• RaspberryPi OS

While running seeed-linux-dtoverlays/modules/CAN-HAT/install.sh the following error bellow. I tried the installation also on the latest kernel for the RaspberryPi OS. Still, the installation fails.

Error:
------------------------------
Deleting module version: completely from the DKMS 
Done.                                                                                                                                                                                                                Creating symlink /var/lib/dkms/mcp25xxfd/0.1/source -> /usr/src/mcp25xxfd-0.1

DKMS: add completed.                                                                                                                 
Error! Your kernel headers for kernel 4.19.36+ cannot be found.
                                                                      
Please install the linux-headers-4.19.36+ package,                                                                                   
or use the --kernelsourcedir option to tell DKMS where it's located                                                                  
Error! Your kernel headers for kernel 4.19.36-v7+ cannot be found.                                                                   
Please install the linux-headers-4.19.36-v7+ package,                                                                                
or use the --kernelsourcedir option to tell DKMS where it's located                                                    
Error! Your kernel headers for kernel 4.19.36-v7l+ cannot be found.                                                                  
Please install the linux-headers-4.19.36-v7l+ package,                                                                               
or use the --kernelsourcedir option to tell DKMS where it's located                                                                  
------------------------------------------------------                                                                               
Please reboot your raspberry pi to apply all settings                                                                                
Enjoy!
------------------------------------------------------  

[terilenard]

Update: I tried again the install script after updating the RPi using rpi-update.
Kernel: 5.15.26-v8+
Content of /lib/modules/

pi@raspberry:~/seeed-linux-dtoverlays/modules/CAN-HAT $ ls /lib/modules/
4.19.36+  4.19.36-v7+  5.10.103-v8+  5.15.26+  5.15.26-v7+  5.15.26-v7l+  5.15.26-v8+

Install.sh output:

Error! Your kernel headers for kernel 5.15.26+ cannot be found.
Please install the linux-headers-5.15.26+ package, or use the --kernelsourcedir option to tell DKMS where it's located
Error! Your kernel headers for kernel 5.15.26-v7+ cannot be found.
Please install the linux-headers-5.15.26-v7+ package, or use the --kernelsourcedir option to tell DKMS where it's located
Error! Your kernel headers for kernel 5.15.26-v7l+ cannot be found.
Please install the linux-headers-5.15.26-v7l+ package,
or use the --kernelsourcedir option to tell DKMS where it's located

[terilenard]

The solution I found so far:

1. Use a armfh RaspberryPi OS, not arm64. The image I have installed has the kernel version 5.10.92-v7+.
2. After you flash the sd card, and run install.sh, the installation will fail, but will install the latest version of the kernel headers, which at this point for me is 5.10.103-v7+.
3. After, I have created the following symlinks to link the sources to the currently running kernel:

ln -s /usr/src/linux-headers-5.10.103+  /lib/modules/5.10.92+/build

ln -s /usr/src/linux-headers-5.10.103-v7+  /lib/modules/5.10.92-v7+/build

ln -s /usr/src/linux-headers-5.10.103-v7l+  /lib/modules/5.10.92-v7l+/build

After doing this, I have re-run install.sh and I had to modify the /boot/config.txt as such:

1. Added: dtoverlay=seeed-can-fd-hat-v2
2. Commented: dtoverlay=2xMCP2518FD-spi0

[bigbearishappy]

Cool. Thank you for your contribution of solving this problem.
Closing the issue, if you have any problem, you can reopen it.

[terilenard]

@bigbearishappy Can we get a fix in the script so it's not necessary to do all those steps?

[bigbearishappy]

@bigbearishappy Can we get a fix in the script so it's not necessary to do all those steps?

OK, I will fix this and let you know.

[terilenard]

Any news on the script?

[bigbearishappy]

Working on it now~

[bigbearishappy]

@terilenard Just fixed it. See more detail in this commit

[bigbearishappy]

@terilenard
If you are work with the latest kernel. It's no need to install the CAN-HAT driver manually.
We have alread merge the code into the mainline of raspberrypi kernle.Here is the LINK