How to install python3 rockpi4 mraa

#1

Hi,
I followed link (https://wiki.radxa.com/Rockpi4/dev/libmraa) to install mraa library.
python2 is working fine.
We using python3 for our development that’s why we want to use python3 rockpi4 mraa library.
How can i install python3 rockpi4 mraa library ?

Thanks & Regards
Vasu

#2

Hi vasudhevan,

Work In Process.

#3

Hi setq,
Did you find out how to use mraa library for python3?

Thanks & Regards
Vasu

#4

This is my work today. I’ll let you know if I make any progress.

#5

Hi ,
I will update the package later.

#6

Hi setq,
Thank you for your response.
We waiting for your reply.

Thanks & Regards
Vasu

#7

Hi vasudhevan,

Please update libmraa-rockpi4 package from testing repo of Radxa APT

#8

I got error

root@localhost:/boot# sudo apt-get install linux-4.4-latest
Reading package lists… Done
Building dependency tree
Reading state information… Done
linux-4.4-latest is already the newest version (4.4.154-99-rockchip).
You might want to run ‘apt --fix-broken install’ to correct these.
The following packages have unmet dependencies:
linux-4.4-latest : Depends: linux-image-4.4.154-99-rockchip-g5b699a48544d but it is not going to be installed
E: Unmet dependencies. Try ‘apt --fix-broken install’ with no packages (or specify a solution).
root@localhost:/boot# sudo apt-get install libmraa-rockpi4
Reading package lists… Done
Building dependency tree
Reading state information… Done
You might want to run ‘apt --fix-broken install’ to correct these.
The following packages have unmet dependencies:
libmraa-rockpi4 : Depends: python but it is not going to be installed
Depends: libpython2.7 but it is not going to be installed
linux-4.4-latest : Depends: linux-image-4.4.154-99-rockchip-g5b699a48544d but it is not going to be installed
E: Unmet dependencies. Try ‘apt --fix-broken install’ with no packages (or specify a solution).
root@localhost:/boot#

#9

Try ‘apt --fix-broken install’ ?

#10

Hi setq,
Thank you for your response.
Trying to generate binary using pyinstaller i am getting error (both python2,python3).

       Traceback (most recent call last):
       File "tset.py", line 2, in <module>
       ModuleNotFoundError: No module named 'mraa'
      [1555] Failed to execute script test

Other pip installed modules is contains our code that is working only libmraa we getting error if i execute manually python code working.
I want to generate binary any other method is there without facing any issue with libmraa library ?

python3 libmraa working.
/boot/hw_intfc.conf is not present update kernel 4.4.154-99-rockchip (export DISTRO=bionic-testing).

Thanks & regards
Vasu

#11

Reinstall linux-4.4-latest and libmraa-rockpi4

#12

Maybe you need to manually delete the old kernel because the remaining space of /boot is too small.

#13

I want to generate binary any other method is there without facing any issue with libmraa library ?
#14

Just download mraa from https://github.com/intel-iot-devkit/mraa and make.

#15

I want to generate python executable.

#16

The mraa library contains python file and shared object file.

Do you mean to generate a package that pip can use?

#17

No our python code used mraa library we want to generate python file to executable file.
When we generating executable using pyinstaller.
While execution of python code ./gpio_test i am getting error import mraa module not found.
Manually execute python gpio_test.py working fine.

#18

Maybe you need to search for information about pyinstaller.

#19

Edit gpio_test.spec file, add /usr/local/lib/python3.6/dist-packages/mraa.py’ to the first parameter of Analysis, like this:

a = Analysis([‘gpio_test.py’, ‘/usr/local/lib/python3.6/dist-packages/mraa.py’],

ps. This is just a pure Python problem.