CAN Communication test on the IMX8M PLUS EVK

[rohit_alate]

Hello Community,

H/W Used ::
Hardware Specification ::
Board :: Imx8mplus-evk
OS :: Android [ 11.0.0_2.2.0 { Linux 5.10.35 Kernel } ]

i am trying to do/test the CAN Communication on board , i am completely new to the Android OS and board, it will be really helpful if you give any documents that i can refer to do the CAN Communication on the Board, or any sample application example which uses the CAN Communication.

Thanks in Advance,

Regards,
Rohit 

[jimmychan]

FYI.

Solved: Flexcan Testing in IMX8 Android OS - NXP Community

[rohit_alate]

Hello @jimmychan ,
Thanks a lot for the response,
i went through the link shared as the link is saying 

canutils will come pre-installed with android release but when i try to run this command using the adb shell i am getting the response like 

Command :: 
verolt@VeroltPuneLt158:~$ adb -s 2011a8006ce230e0 shell ip link set can0 up type can bitrate 125000

response ::
request send failed: Permission denied

Actually i am new on the Embedded Android so please let me know how i can proceed in this.

Thanks in advance,

Regards,
Rohit

[jimmychan]

You may download the documentation for the Android BSP.

• Documentation​

There is Android user's guide. You may check the setting androidboot.selinux=permissive in the u-boot bootargs.

Also, you could try the command in the debug console. For the console setup, you could refer to the Chapter 3 in i.MX Linux User’s Guide​

[rohit_alate]

Hello @jimmychan ,

Thank you so much for the quick response,

I am able to setup the console and run command,

but getting the error like attached picture,

and to set the androidboot.selinux=permissive how i can go into the Uboot terminal ?


Regards,
Rohit

[jimmychan]

When the board is start up, there is 3 seconds count down before the kernel boot. You could press any key on debug console to stop the booting to enter the u-boot. Then you could setup the bootargs.

[dhirajtarole]

Hi @jimmychan ,

As i am working along with @rohit_alate , i have given setenv bootargs androidboot.selinux=permissive command in uboot terminal and save the environment as well.

after that when i executed boot command than board will go in infinite loop with some errors.

please find attached environment for ref,

i booted the image from the eMMC mode.

Thanks and regards,

Dhiraj

[jimmychan]

Please read the Chapter 6.2.1 in Android user's guide about the bootargs settings.

There is an example in page 39 about setting with boota.

[dhirajtarole]

Hi @jimmychan ,

I have tried this one but the board get stucked in boot  loop. this is what i have treid :-

before modification :-

uboot - setenv bootargs androidboot.selinux=permissive

uboot - saveenv

uboot - setenv bootcmd "bootmcu && boota "

uboot -saveenv

also please check the below image showing cannot find can0

OS Using :Android11.0.0_2.2.0

Thanks,

Dhiraj