ReadReal example does not read correct FPOS value

[birbs1968]

Hi, I was trying to help a colleague read the FPOS using your very useful ACSpy.

The function given in the read real example did not work for him ( at least on ACS 6.72 or ACS 7.0.0 ).
print(acsc.readReal(hc, acsc.NONE, "FPOS(0)"))
This returns 0.00 regardless of the value for FPOS(0).
I tried this instead , which does work :
print( acsc.readReal(hc, acsc.NONE, "FPOS", 0, 0 ) )
Also might be worth mentioning somewhere that on some PCs using openCommEthernetTCP requires an '.encode()' on the
IP address, but on others using .encode() does not work. This might be across different Python versions , not sure.

Hope this helps, my colleague uses your library quite a bit ( I use the C++ stuff from ACS myself so knew how to help him ).
Thanks.

[petebachant]

Is that a covered use case in the C library? Why not use acsc.getFPosition?

[birbs1968]

My only point really was that the example did not work for FPOS, - but that may be true for all axis values ( like MFLAGS etc ).
To be honest, I don't know your library and was just looking at what my colleague was trying to do. I will mention it to him he can use the call you mentioned to read the FPOS positions.
Not sure what you mean by 'covered use case in the C library'' ?
In the C library you can directly read real values - acsc_ReadReal() or use acsc_GetFPosition() directly to get the FPOS . As far as I recall...

[francdoc]

Hi @birbs1968, thought you might find this helpful for you or your friend:

• https://github.com/francdoc/acscontroller/blob/main/acscontroller.cpp#L232
• https://github.com/francdoc/acscontroller/blob/main/stage.cpp#L179
• https://github.com/francdoc/acscontroller/blob/main/stage.cpp#L548
• https://github.com/francdoc/acscontroller/blob/main/stageserver.cpp#L105

It's worth mentioning that while it's functional in a minimal way, there might be some room for refactoring, and some design decisions might not be optimal at all.

I've been using a quick Python controller on Linux as a syncing interface for the ACS server (running on Windows in C++), connecting them with an Ethernet cable. This setup helps synchronize the ACS Windows system with peripheral systems on the Linux side. Hopefully, it proves helpful.

I'm currently exploring the C API and experimenting with C++ concepts. I plan to return soon to contribute to Pete's project. Feel free to reach out if you have any questions.

[birbs1968]

Hi Francdoc, Thanks I will certainly send a link to my colleague, although as a non-coder he probably will stick with Python. I have implemented a full gRPC Server wrapping the C Api which we currently use in our project to drive our stage. If I hear of future users wanting to use C/C++ directly ( and not my server ) I will highlight your code to them. birbs1968

…

________________________________ From: francdoc ***@***.***> Sent: 08 March 2024 01:51 To: petebachant/ACSpy ***@***.***> Cc: birbs1968 ***@***.***>; Mention ***@***.***> Subject: Re: [petebachant/ACSpy] ReadReal example does not read correct FPOS value (Issue #26) Hi @birbs1968<https://github.com/birbs1968>, thought you might find this helpful for you or your friend: Check out this, it might help: Link<https://github.com/francdoc/acscontroller/blob/main/acscontroller.cpp#L232> There's also a quick Python controller (client side running on Linux) for quick commands to the ACS server running in C++ / Windows. I've been using it with an Ethernet cable, connecting the client on Linux to the server. Hope it proves useful. Currently, I've been tinkering with the C API, but I'll be back soon to contribute to Pete's project. — Reply to this email directly, view it on GitHub<#26 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BGBGFQRF2OHIQ3H5WCRWV2LYXEKQLAVCNFSM6AAAAABDCV3BDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTSOBUHEYDQMZXGY>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[francdoc]

Hi @birbs1968 cool. Sure! Let me know. Good luck.