Use Libmodbus library
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Goodmorning to all,
I've build a custom OS image and sdk generated with yocto poky-morty so that I could cross compile my applications for a Raspberrypi3.
Qt version is 5.7.1. I've done the folling steps:-
Yocto generated the following modbus library files:
libmodbus.so
libmodbus.la
libmodbus.so.5
libmodbus.so.5.0.5
saved in the following path of my host sytem:
/opt/poky/sdk-2.2.2/sysroots/cortexa7hf-neon-vfpv4-poky-linux-gnueabi/usr/lib -
I've downloaded the following modbus qt wrapper project:
https://github.com/kiug/QModbus -
When I try to compile the project I get the error:
modbus.h: No such file or directory -
I tried to include the external library, giving the path for libmodbus.so reported above but I get the same error.
Can you help me?
Thank you. -
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Hi,
Why not use the QtSerialBus module ?
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Hello StGaist,
thank you again for your answer. I didn't know of this library, and it looks simpler to use than the qt wrappeer that I found, I'll definitely pass to this.Just for information for those ones who use Yocto, the problem was that I had to add the following for seeing modbus.h:
INCLUDEPATH += $$PWD/../../../../opt/poky/sdk-2.2.2/sysroots/cortexa7hf-neon-vfpv4-poky-linux-gnueabi/usr/include/modbus
DEPENDPATH += $$PWD/../../../../opt/poky/sdk-2.2.2/sysroots/cortexa7hf-neon-vfpv4-poky-linux-gnueabi/usr/include/modbus
After that I had the following problem:
cannot find /lib/arm-linux-gnueabihf/libpthread.so.0
and found solution here:
https://stackoverflow.com/questions/14207189/crosstools-ng-cant-find-pthread-soThank you again StGaist :)
