[isar] Build minimalmodbus

[MickaelDelanoe]

Hello,

I try to add minimalmodbus lib to my image with Isar Project.

So I do my recipe like follow

SUMMARY = "Easy-to-use Modbus RTU and Modbus ASCII implementation for Python."
DESCRIPTION = "MinimalModbus is an easy-to-use Python module for talking to \
instruments (slaves) from a computer (master) using the Modbus protocol, \
and is intended to be running on the master. Example code includes drivers \
for Eurotherm and Omega process controllers. The only dependence is the \
pySerial module (also pure Python). This software supports the 'Modbus RTU' \
and 'Modbus ASCII' serial communication versions of the protocol."

HOMEPAGE = "https://github.com/pyhys/minimalmodbus/"
SECTION = "devel/python"

SRC_URI="https://github.com/pyhys/minimalmodbus/archive/0.7.zip"
SRC_URI[md5sum] = "d40916acd676b6e94b9c8ce3e2f4e47c"

LICENSE = "Apache-2.0"
LIC_FILES_CHKSUM = "file://LICENSE;md5=27da4ba4e954f7f4ba8d1e08a2c756c4"

S = "${WORKDIR}/git"
DEPENDS = "python"
RDEPENDS_${PN} += "python-pyserial python-importlib"
#DEBIAN_DEPENDS = "python-importlib"

inherit dpkg

do_prepare_build[cleandirs] += "${S}/debian"

do_prepare_build() {
    deb_debianize
}

But when I build, I got the following error:

Loading cache: 100% |#####################################################################################################################################################################| Time: 0:00:00
Loaded 59 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies
ERROR: Nothing RPROVIDES 'python-pyserial' (but /repo/recipes-aquassay/minimalmodbus/minimalmodbus_0.7.bb RDEPENDS on or otherwise requires it)
NOTE: Runtime target 'python-pyserial' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['python-pyserial']
ERROR: Required build target 'iot2050-image-aquassay' has no buildable providers.
Missing or unbuildable dependency chain was: ['iot2050-image-aquassay', 'minimalmodbus', 'python-pyserial']

Summary: There were 2 ERROR messages shown, returning a non-zero exit code.
2021-11-30 15:49:48 - ERROR    - Command returned non-zero exit status 1

Do you have an idea why python-pyserialis a trouble ?

Note that I my recipe is not in ecipes-connectivity/minimalmodbus/ as write in documentation, I do not know if it can be a trouble ...

Best Regards,

[j123b567]

I don't know what Isar is and I can't even find anything relevant. But from your recepie, it looks like some Buildroot/Yocto based system.

From the error message there is no way how to build python-pyserial because you have no package which provides it. So just add recipe for pyserial.

It can also be similar problem to #79 so you should try e.g. python3-pyserial and update the overall dependency to python -> python3.

[lemmi25]

Hi,

this is the recipe I used for pyserial:

SUMMARY = "Python Serial Port Extension"
HOMEPAGE = "https://github.com/pyserial/pyserial"
AUTHOR = "Chris Liechti <cliechti@gmx.net>"
LICENSE = "BSD"
LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=520e45e59fc2cf94aa53850f46b86436"

SRC_URI = "https://files.pythonhosted.org/packages/1e/7d/ae3f0a63f41e4d2f6cb66a5b57197850f919f59e558159a4dd3a818f5082/pyserial-3.5.tar.gz"
SRC_URI[md5sum] = "1cf25a76da59b530dbfc2cf99392dc83"
SRC_URI[sha256sum] = "3c77e014170dfffbd816e6ffc205e9842efb10be9f58ec16d3e8675b4925cddb

S = "${WORKDIR}/pyserial-3.5"

RDEPENDS_${PN} = ""

inherit setuptools3

This worked for me. Is your minimalmodbus recipe working after using my pyserial recipe?

[j123b567]

If it is bitbake based distro, package name depends on bb filename. So, if the filename is e.g. python3-serial_something.bb then you should depend on python3-serial and not python-pyserial.

[MickaelDelanoe]

Thanks for your replies.

I don't know what Isar is and I can't even find anything relevant.

Well, firstable I built an image with Yocto, but to use my image on a new Hardware I have to move to Isar Project. I'm not an Isar Expert, but basically, Isar is like an overlay of Yocto to help the build/dev/...

isar - Integration System for Automated Root filesystem generation (https://github.com/ilbers/isar)

because you have no package which provides it

Yes, I was confused because in my previous image I do not add recipe for pyserial. But I understand now, it's because I used meta-openembedded (who integrate pyserial) in my previous Yocto Project.

So yes, I will try to add pyserial recipe. Thanks @lemmi25 for your recipe.

[MickaelDelanoe]

Hi @lemmi25, For now, I can't tel you if my minimalmodbus recipe work with your pyserial recipe because after build I got a new error

2021-12-02 10:10:52 - INFO     - /build$ /work/isar/bitbake/bin/bitbake -c build iot2050-image-aquassay
Loading cache: 100% |#####################################################################################################################################################################| Time: 0:00:00
Loaded 60 entries from dependency cache.
ERROR: ParseError at /repo/recipes-aquassay/python-pyserial/python-pyserial_3.0.1.bb:32: Could not inherit file classes/setuptools3.bbclass                                              | ETA:  --:--:--

Summary: There was 1 ERROR message shown, returning a non-zero exit code.

So I added setuptools3.bbclass, but I got a new error

Loaded 60 entries from dependency cache.
Parsing recipes: 100% |###################################################################################################################################################################| Time: 0:00:00
Parsing of 60 .bb files complete (59 cached, 1 parsed). 60 targets, 0 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
ERROR: Nothing PROVIDES 'python3-setuptools-native' (but /repo/recipes-aquassay/python-pyserial/python-pyserial_3.0.1.bb DEPENDS on or otherwise requires it)
ERROR: Required build target 'iot2050-image-aquassay' has no buildable providers.
Missing or unbuildable dependency chain was: ['iot2050-image-aquassay', 'python-pyserial', 'python3-setuptools-native']

Summary: There were 2 ERROR messages shown, returning a non-zero exit code.
2021-12-02 08:19:58 - ERROR    - Command returned non-zero exit status 1
aquassay@debian-plasma:~/meta-iot2050$ 

And I don't know how provide python3-setuptools-native ...

I tried : IMAGE_PREINSTALL += "python3-setuptools" but not better ...

[pyhys]

There is a tool to generate Yocto recipes for Python packages that are available on Pypi. See https://github.com/NFJones/pipoe I have not tried it my self, but it seems useful,

[plpento]

Hi,

I am trying also to make yocto recipe. I have tried pipoe but it is not working. Did you find a solution?

Thanks,

[MickaelDelanoe]

Hi,

Unfortunately no. My project is in standby, I have no idea. Sorry to can't help you.

Good luck, -- Mickaël Delanoë Ingénieur d'études | Design Engineer T. +33 (0)5 87 03 80 59 E. @.*** A. 31 rue du Châtenet 87410 Le Palais-sur-Vienne

https://aquassay.com/partnership-nestle-waters-aquassay/?lang=en

Le jeu. 9 mars 2023 à 10:25, Panos @.***> a écrit :

Hi,

I am trying also to make yocto recipe. I have tried pipoe but it is not working. Did you find a solution?

Thanks,

— Reply to this email directly, view it on GitHub https://github.com/pyhys/minimalmodbus/issues/81#issuecomment-1461643756, or unsubscribe https://github.com/notifications/unsubscribe-auth/AG3BQ5KCTGN3I4PAE6FU6I3W3GOXXANCNFSM5JCF5WUA . You are receiving this because you authored the thread.Message ID: @.***>

[pyhys]

The documentation on Yocto is now updated: https://minimalmodbus.readthedocs.io/en/stable/advancedusage.html#including-minimalmodbus-in-a-yocto-build