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Forum Index : Microcontroller and PC projects : Help with Minicom (Zorin Linux)
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| hitsware Guru  Joined: 23/11/2012 Location: United StatesPosts: 535 |
DuinoMite Mega MMBasic 4.4 The PC sees the Duino (ttyACM0) but I get no screen and an error (on terminal) 'can't open ttyACM0' What should be settings on serial setup ? 
Thanks for any help ..... |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3804 |
You've not said even basic details but I guess you're on Linux. Try it as root and if OK then you need to set permissions, probably via udev. John |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
Thank You ! .. :) Yes, in the subject of post, Zorin (Linux) (in which I'm way awkward (ignorant)) Based on Ubuntu 1)installed Minicom via dpkg no errors shown 2)followed this (from Duinomite users manual) (except installed minicom via usbdrive with dpkg since I have no internet on target PC): LINUX: If you use Linux the DuinoMite drivers will be automatically recognized and installed. Open console and install minicom terminal program. $ sudo apt-get install minicom Then you should locate which virtual communication port is DuinoMite by running this command:. $ dmesg | grep tty You will see cdc_acm driver something like: [103473.694556] cdc_acm 5-1:1.0: ttyACM0: USB ACM device Please remember ttyACM0: as you have to setup minicom to use it: $ minicom -s Setup the serial port to ttyACM0: and you will see the greet message: MaxiMite BASIC Version x.xx Copyright 2011, Geoff Graham Olimex Port By kenseglerdesigns.com Everything seems right except no 'greet message' instead 'cannot open ttyACM0' message |
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vk4tec Senior Member  Joined: 24/03/2012 Location: AustraliaPosts: 239 |
Mate the devices in linux are /dev/ttyUSB0 /dev/ttyACM0 Linux needs the /dev Its not like windows "COM1" try "stty -F /dev/ttyACM0" - Andrew - Andrew Rich VK4TEC www.tech-software.net |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3804 |
Sorry, didn't see the other bit of info. Had I known you were following a specific set of instructions I could have said what Andrew's now said. You still may need udev rules. google works for getting those if the thing you're following doesn't give enough detail. John |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
Thanks Guys ! That helped .... got 'permission denied' If I use sudo minicom -s
then save the settings as 'duinomite' (I wasn't saving before) it works ... I guess 'sudo' supercedes the needed 'permissions'? So now how do I use 'duinomite' to not have to go through the whole setup each session ? |
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| Greg Fordyce Senior Member Joined: 16/09/2011 Location: United KingdomPosts: 153 |
By using sudo to run minicom you are running it as a superuser/root user instead of your normal user. Since it works running as root you have a permissions problem, I suspect with /dev/ttyACM0. Navigate to /dev/ttyACM0 with your file manager, right click on it and select properties from the menu. Go to the permissions tab and see what group it belongs to. You then need to make sure your normal user account is a member of the same group. Hope that helps, Greg. |
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| vk4tec Senior Member Joined: 24/03/2012 Location: AustraliaPosts: 239 |
Is there any reason you dont dabble on your home system as the "root" user ? I always use root , otherwise you will get all sorts of silly persmission issues. I always install as root, run as root. No issues Here is what I do 1. apt-get install minicom 2. stty -F /dev/ttyUSB0 -echo 3. minicom -s 4. set the serial device to /dev/ttyUSB0 I did find some funnies with Hyperterminal in windows - Andrew - Andrew Rich VK4TEC www.tech-software.net |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
Anyways ......... Thanks Guys ! I'm at least up and running ..... I'll worry about 'permissions' later. For now: (using root) MMBasic works in the initial mode, but when I go to EDIT the Function Keys don't work. When I hit F2 instead of running I get a 'Quit without changes ? Y/N' ?????? Is this due to some Minicom settings ? |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6100 |
Minicom probable has a way of changing the function key assignments but luckily you have alternatives for some of the function keys: You can also use control keys instead of the functions keys listed above. These control keystrokes are:
LEFT Ctrl-S RIGHT Ctrl-D UP Ctrl-E DOWN Ctrl-X HOME Ctrl-U END Ctrl-K PageUp Ctrl-P PageDn Ctrl-L DEL Ctrl-] INSERT Ctrl-N F1 Ctrl-Q F2 Ctrl-W F3 Ctrl-R ShiftF3 Ctrl-G F4 Ctrl-T F5 Ctrl-Y Jim VK7JH MMedit MMBasic Help |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3804 |
Using root will bite you one day. If you're OK with that then carry on but otherwise use udev rules etc to get permissions right :) Not hard. And it's how UNIX and Linux are designed to be used. John |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
What did I do or not do (at installation) to make me have to use 'sudo' now ? |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
Good-O ! Thanks :) I'll try that. It would be nice to straighten that out, but if not at least makes EDIT usable (which is MUCH nicer than the other mode) |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3804 |
Probably nothing then. Briefly, what happens is that on plugging in (or resetting) the 'mite a new USB device appears, the kernel talks to it, then creates a new "special file" (in this case /dev/ttyACM0). During the process it's found out the VID & PID (vendor & product ID) of the USB thing. It looks to see if it has any info about the device under those IDs and may do things based on them (the udev rules stuff). What you normally do is make sure you do have appropriate rule(s). Those would typically create the /dev/ttyACM0 with particular permissions, ownership, etc. Also, you'd have the non-root user have suitable permissions etc. In my case I have /etc/udev/rules.d/xxx.rules (where xxx is whatever name I like) that sets the device to be group plugdev and I'm a member of that group. So, there is fuly controlled and secure, safe access to the device. No need to be root. It really is worth using google and doing some reading as there are samples etc on the net all for free. John |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
O.K. ..... Thanks again. I was wondering if it was because of where I saved the install package to begin with. Directions I followed : Dear Sir, If the Software Center is not installing the .deb files you can try using dpkg. To do so please place the .deb files into the root of your home folder and run the following command in a terminal window (Start Menu> Accessories> Terminal) relacing filename.deb with the name of the .deb file you are trying to install: sudo dpkg -i filename.deb |
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vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
I'm not familiar with Zorin OS (even if I installed it in an afternoon and tested it for a "Windows user" friend), but installing Arduino will set some rules and will add your user to the "dialout" group so, you can access /dev/ttyACM0 without root rights... see some forums posts for Ubuntu 13.04 (if your Zorin OS version is 7.1) using google... So, your user must be member of dialout and plugdev groups and a proper rule for udev must be placed in the configuration file /etc/udev/rules.d/your_file These are some of my rules: [code] # Copy the file in the right place and make yourself an plugdev group member # sudo cp 41-microchip.rules /etc/udev/rules.d/ # sudo usermod -a -G plugdev $USER # # Pinguino8 (PIC18F) ATTR{idVendor}=="04d8", ATTR{idProduct}=="feaa", MODE="0660",GROUP="plugdev" # # Pinguino32 (PIC32MX) ATTR{idVendor}=="04d8", ATTR{idProduct}=="003c", MODE="0660",GROUP="plugdev" # # Pickit 2 ATTR{idVendor}=="04d8", ATTR{idProduct}=="0033", MODE="0660",GROUP="plugdev" # # Pickit 3 ATTR{idVendor}=="04d8", ATTR{idProduct}=="900a", MODE="0660",GROUP="plugdev" #FreeJALduino SUBSYSTEMS=="usb", ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="000B", MODE="0660" , GROUP="plugdev" #Sanguino SUBSYSTEMS=="usb", ATTRS{product}=="FT232R USB UART", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", GROUP="plugdev" SYMLINK+="sanguino arduino_$attr{serial}" SUBSYSTEMS=="usb", ATTRS{product}=="ARDUINO NANO", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", SYMLINK+="arduino arduino_nano_$attr{serial}" [/code] included in a file named "41-microchip.rules" and placed inside /etc/udev/rules.d/ folder Warning: when you issue the commands written inside the "41-microchip.rules", you must be logged as your initial user created at the Linux install time. The user that you use every day. Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
GULP :) |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Maybe this can help you a little more: http://wiki.pinguino.cc/index.php/Linux#Ubuntu_Oneiric_.2811 .10.29_amd64_64_bit Instead of microchip group, you have plugdev (if you use my "file"), but you don't need to create it - it exists already. Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| hitsware Guru Joined: 23/11/2012 Location: United StatesPosts: 535 |
vasi .. Thank you so much :) Too complicated for me I may ditch the PC hookup and go back to stand-alone DuinoMite/Fluxamasynth (TV monitor/ps2keyboard) I'm just trying to make a smaller footprint ! MegaRegards <|:^)) |
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