Connecting 50g to openSUSE Linux box (*very* long)
in [HP48]
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From: Matt on 3 Jan 2007 17:59 "Albert Graef" <Dr.Graef(a)t-online.de> wrote in message news:enh35u$2du$01$1(a)news.t-online.com... > Veli-Pekka Nousiainen wrote: >> Go and buy Windows XP - mine works beautifully... :-D > > Thanks a lot for that insightful remark, I already have that Windows > XP > thingie but I prefer Linux anyway. ;-) > > Hmm, it seems that it's an issue with the 2.6.16 kernel distributed > with > openSUSE 10.1. openSUSE 10.0 works fine with the 50g. Ok, I guess it's > time to upgrade my box to 10.2 anyway... Does anyone else here have a > Linux system with kernel >2.6.16 and a working 50g-via-usb connection? I *did* have it working with Debian testing (i386). I think the kernel was 2.6.18. Unfortunately I had to ditch Linux for Windows so I lost my config files. However, I'll post some things I did find in a tarball. I can't remember where I got this stuff from (I think one was a post on here a while ago). Anyway, by falling down the stairs and landing on my feet, I managed to get things working. I didn't have to recompile the kernel. I hope this is of use to you. Matt (Method 1) Add the following line to both /etc/udev/devfs.rules and /etc/udev/udev.rules : BUS="usb", KERNEL="ttyUSB*", SYSFS{product}="HP49g+ Calculator", SYMLINK="hp50g" As root: # modprobe usbserial vendor=0x3f0 vendor=0x121 # modprobe safe-serial vendor=0x3f0 vendor=0x121 Plug in the calculator and turn it on, the following should show you that the computer detects the device and associates it with the generic USB serial converter and to a ttyUSB* node in /dev: # dmesg | tail To transfer the files, I use C-Kermit, with the following .kermrc configuration file in my home directory: SET MODEM TYPE DIRECT SET PORT /dev/ttyUSB0 SET SPEED 9600 SET CARRIER-WATCH OFF SET FLOW NONE SET PARITY NONE SET BLOCK 3 SET CONTROL PREFIX ALL SET FILE TYPE BIN SET TRANSFER DISPLAY CRT And the transfer process is exactly like it was explained in a previous article in the group: - Turn on the calculator and start the Kermit server - on a console: kermit -s <file> (Method 2) A mini-howto for connecting the HP 49G+ USB port with linux. ***** Linux configuration ***** ** Configure kernel USB support Most stock kernels (e.g. SuSE, RedHat, ...) should have this already set up properly. To compile your own (2.6.9) kernel, - enable the USB options for your computer as normal - set USB_SERIAL as a module - set USB_SERIAL_GENERIC as yes - compile and install the kernel and modules (see the kernel howto for more detail) Note: safe_serial (USB_SERIAL_SAFE) is not necessary nor even used to connect to the 49G+. ** Load the kernel modules - as root, type "modprobe usbserial vendor=0x03f0 product=0x0121" This loads the module and registers it with the USB hotplug system to control the 49G+. You may wish to add the appropriate instructions to your system's boot scripts. ** Connect the calculator - Turn it on and plug in the USB cable (order may be reversed without harm) - as any user, type "dmesg | tail" The last line should show something like "usb 3-1: Generic converter now attached to ttyUSB0". ttyUSB0 refers to the device at /dev/ttyUSB0; substitue the port number as necessary. ttyUSB1 or 2 may be used if you restart the calculator after a hung connection. You should be able to free a hung port by killing the zombie process. - (optional) type "more /proc/bus/usb/devices" One of the entries should be for the calculator. It shows the USB vendor and product numbers which were used above. One line should read "I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbserial_generic". If Driver=(none), then your usbserial module wasn't installed/started properly. You might "rmmod usbserial" and try loading it again; the product or vendor may have been wrong. - type "ls -l /dev/ttyUSB0"; make sure that it is readable AND writable by your normal user ***** XModem ***** Some distributions package the XModem software along with minicom. To me, XModem seems faster/more reliable than Kermit for large file transfers. ** Send a file to the calculator - put a destination variable name on the stack (e.g. 'test') - on the computer, type "sx FILENAME < /dev/ttyUSB0 > /dev/ttyUSB0" (use lsx instead of sx as appropriate) - on the calculator, type XRECV - wait a while; the computer should show the upload progress after a few seconds - the "-k" option seems to improve transmission speed. "lsx -k FILENAME </dev/ttyUSB0 >/dev/ttyUSB0" ** Receive a file from the calculator - put the source variable name on the stack (e.g. 'PPAR') - on the calculator, type XSEND - on the computer, type "rx FILENAME < /dev/ttyUSB0 > /dev/ttyUSB0" - wait Note: this file will come in the calculator's binary format ***** Kermit ***** (easier and more powerful than XModem) ** Connecting - on the calculator, simultaneously press red-shift and right-arrow The calculator should now say "Awaiting Server Cmd." - on the computer, type "kermit" or "ckermit" - in kermit, type "set port /dev/ttyUSB0" - (optional) in kermit, type "robust" Kermit has three default operating modes -- fast, cautious, and robust. I haven't noticed any differences between them. The default is "fast". ** (Optional) Speed boost attempts - on the calculator, APPS key, 2.I/O functions.., 5.Transfer.., Chk: 1 Reducing the checksum complexity means the calculator doesn't have to calculate so much before sending data. - in kermit, type "set streaming on" - "set prefixing none" - (optional) "set block-check 1" I dunno, my transfer speeds range from 9cps to over 390 cps. Why won't it consistently hit higher speeds? - to learn more about kermit, type "help" or visit their website - to check on connection speed, type "show streaming" ** List the HP's variables: - "rdir" ** Executing commands on the calculator: - "rhost COMMANDNAME" Whatever you type after the rhost will be evaluated on the calculator's command line. The calculator will return the current stack view. Commands are case-sensitive. Sample rhost usage: - "rhost 10" - "rhost !" - "rhost 2" - "rhost +" - "rhost SIN" or, more simply - "rhost 10 ! 2 + SIN" ** Changing directory: - "rhost UPDIR" - "rhost { HOME DIR1 SUBDIR }" or whatever ** Get a file from the calculator - "get VARNAME FILENAME" where VARNAME is a variable in the current path FILENAME is the destination file on the computer By default, this transfer is in ASCII mode. ** Send a file to the calculator - "send FILENAME VARNAME" ** Closing - in kermit, type "finish", then "exit" and "ok" Note: If you restart the calculator while running kermit, linux will "hang" ttyUSB0 and reconnect the calculator as ttyUSB1. To avoid this, close kermit before turning the calculator back on. ***** General ***** ** If the calculator freezes - Try hitting cancel - If that doesn't work, unplug the USB cable and then hit cancel - I always turn it off and on again just to be sure ** TODO - figure out how to consistently speed up kermit communications - figure out how to toggle whether the calculator returns the stack after each "rhost" - figure out how to stop the calculator from parsing text files as they are sent by kermit - figure out how to receive a screen capture (APPS key, 2.I/O functions.., 3.Print display) - adopt a standard notation Maybe something like root# - root prompt user> - user prompt HP: - calculator stack/command ... - add sections on SD cards and updating the ROM (if I only had one... <cough> <hint> ;) - convert to HTML, sprinkle in a few pictures - publish nice scripts or even a GUI to simplify the whole process - mod EMU48 or the like to actually run commands on the connected calculator - add a web interface to this remote-control system - mod the calculator to - increase the IR range (restore the TV remote) - make the speaker louder and add a volume dial - add a low-pass filter to the speaker to improve its sound quality (and allow fancier modulation) - add an audio-out jack (couldn't this thing decode MP3's from an SD card?) - set up an interface so the calculator can be used as a super-spiffy numeric keypad for my desktop (assumes better HP keys) ** Links - Official site: http://www.hp.com/calculators/graphing/49gplus/ - Usenet group: comp.sys.hp48 - XModem software: http://www.ohse.de/uwe/software/lrzsz.html - Kermit software: http://www.columbia.edu/kermit/ - Old HPTalx program: http://hptalx.sourceforge.net/ - GUI for OSX: http://hpconnect.sourceforge.net/ - GCC compiler: http://hpgcc.sourceforge.net/ - Master repository: http://www.hpcalc.org/ - 49G with Linux: http://lcdx00.wm.lc.ehu.es/~svet/hp49g.html ** Written by Daniel Herring, dherring at uiuc du-ot edu Doesn't that read like the spam subject lines? If you can't beat 'em, join 'em! ** Licensing Please feel free to update, edit, and distribute this document. I only ask that you re-release your changes freely, and give credit where it is due. Please contact me with updates, or to get the latest version.
From: Albert Graef on 3 Jan 2007 22:05 Matt wrote: > I *did* have it working with Debian testing (i386). I think the kernel > was 2.6.18. Ah ok, so kernel 2.6.18 seems to be ok. Thanks a lot for the info. Might as well be that 2.6.16 works in other distros, too, but that SUSE 10.1 just came with a hosed usb serial driver. SUSE 10.0 works fine, so at least it's not my stupidity this time. ;-) Thanks! Albert -- Dr. Albert Gr"af Dept. of Music-Informatics, University of Mainz, Germany Email: Dr.Graef(a)t-online.de, ag(a)muwiinfa.geschichte.uni-mainz.de WWW: http://www.musikinformatik.uni-mainz.de/ag
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