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Forum Index : Microcontroller and PC projects : Two questions about accessing a CMM from a Raspberry Pi
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thwill Guru  Joined: 16/09/2019 Location: United KingdomPosts: 4311 |
Hi folks, I'm trying to cast off the chains of using my Windows Laptop for Maximite development and switch to my largely unused Raspberry Pi 3 - not because I have any especial loathing of Windows but because using it feels too much like my day job. Firstly I've tried using GtkTerm, minicom and CuteCom to access the CMM and they all work after a fashion, but the first output they give me is variations upon the theme of: lour Maximite MMBasic V4.5C Error: Incorrect expression syntax > CoColour Maximite MMBasic V4.5C Copyright 2011-2018 Geoff Graham They seem to work fine after that but I'd still like to understand what is going on and stop it if I can. Secondly is there a good way (something FTP-ish) of remotely accessing the files on the CMM's SD card? So far (on Windows) I've been pulling the card and plugging it into the Windows box when I want to, for example, upload my project files to github. I've looked at XMODEM but that seems very primitive with having to explicitly and separately specify the file to be sent and the filename to receive it under. Thanks in advance, Tom MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6283 |
In Windows there is the File Manager built in to MMEdit but that's not an option on the RPi If you are willing to use Python, it should be feasible to write something similar for the RPi The other method: I run ser2net on my Pi's and use MMEdit's TCPIP ability to connect to the 'mites that are plugged into a RPi from my Windows PC, across the room or across the world. Jim VK7JH MMedit |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4311 |
Thanks Jim, I assume by your signature that you are the author? Unfortunately as I said I'm looking for a Windows-free solution, so MMEdit is out, which is a shame, it looks very nice. Would I be correct in guessing its file management works by making a serial connection to the MM, issuing the FILES command (and friends), scraping the output to build a file structure and then using XMODEM for the actual file transfers? That sounds do-able in Python, though whether I do it is another question, popping the SD card in and out is inconvenient, but is it that inconvenient? ;-) Regards, Tom MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6283 |
Yes. There are a few differences between the various 'mites but if you are only interested in the CMM, that won't be an issue. XMODEM is old, reliable and relatively simple to implement. There are a few sources of example code on the net and there might be a Python script already done. Serial connections will always be slow so if you have large files to transfer, popping the card will be a lot faster. Jim VK7JH MMedit |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4311 |
Thankyou Jim. Possibly it's something I'll look into. MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4311 |
For anyone who ends up finding this post in the future. I found that PuTTY (on Raspberry Pi) is more friendly than minicom as it "correctly" maps the Fn, Home and End keys when used with the CMM, you do however need to change the setting of the Backspace key. MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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