but is this diag software output post-processed by the pc? if you have logs of the data in flight, and there is no image, then you dont need sane, you need a standalone app.
allan On 7/30/08, Dan Scott <danieljamesscott at gmail.com> wrote: > Hi, > > I think it's a bit simpler than that. The diagnostic software shows an > "array" showing the marked boxes. Here's what I get form the > diagnostic software when I scan a slip: > > Please select: > Ticket count: 1 > ticket data len=52 > <..> 1 2 3 4 5 6 7 8 9 0 A B C D <..> 1 2 3 4 5 6 7 8 9 0 A B C D > < 1> * * * . . . . . * . * * . <21> . . . . . . . . . . . . . > < 2> . . . . . . . . . . . . . <22> . . . . . . . . . . . . . > < 3> . * . . . . . . . . . . . <23> . . . . . . . . . . . . . > < 4> . . . . . . . . . . . . . <24> . . . . . . . . . . . . . > < 5> . . . . . . . . . . . . . <25> . . . . . . . . . . . . . > < 6> . . . . . . . . . . . . . <26> . . . . . . . . . . . . . > < 7> . . . . . . . . . . . . . > < 8> . . . . . . . . . . . . . > < 9> . . . . . . . . . . . . . > <10> . . . . . . . . . . . . . > <11> . . . . . . . . . . . . . > <12> . . . . . . . . . . . . . > <13> . . . . . . . . . . . . . > <14> . . . . . . . . . . . . . > <15> . . . . . . . . . . . . . > <16> . . . . . . . . . . . . . > <17> . . . . . . . . . . . . . > <18> . . . . . . . . . . . . . > <19> . . . . . . . . . . . . . > <20> . . . . . . . . . . . . . > > So I only have to worry about getting this data - not downloading an > image and then extracting the mark information. > > Thanks, > > Dan > > 2008/7/30 m. allan noah <kitno455 at gmail.com>: > > > i have quite a bit of omr experience, and have done a bit with rs232 > > in the past, but never scanners. do your logs show the actual data > > being passed? if so, i think your first effort should be to extract > > image from logs. > > > > allan > > > > On 7/30/08, Dan Scott <danieljamesscott at gmail.com> wrote: > >> Hi, > >> > >> I'm working on getting a RS232 scanner working on Linux. I see that > >> Sane has some support for serial port scanners but not much. The > >> scanner is attached to a POS system for retail sales and runs RHEL5. > >> > >> Unfortunately, I have no documentation for the scanner, I'm not even > >> sure of the brand. There's a logo on the front which is 'G' followed > >> by a globe symbol, followed by 'T' so it could be 'GOT' or 'GT'. There > >> does not appear to be a model number although there is an > >> identification place which is written in Chinese. > >> > >> I have a compiled diagnostic application (no source code) which can > >> control the scanner and I have tried logging the system calls using > >> the 'ltrace' command, so that I can figure out the protocol. I have > >> tried writing a program to mimic the diagnostic application which > >> sends the same commands to the serial port but the scanner does not > >> respond. > >> > >> Does anyone have any expertise in RS232 scanner protocols? All my > >> searching on the web reveals results for barcode scanners which appear > >> to work very differently from image scanners. > >> > >> As a final note, I am trying to use the scanner for OMR - the > >> diagnostic application returns an array of data relating to the marks > >> entered on a slip of paper - if that is any use. Also, I can attach > >> the log file of system calls made by the diagnostic application if > >> that will help anyone. > >> > >> Any help would be greatly appreciated. > >> > >> Thanks, > >> > >> Dan Scott > >> > >> > >> -- > >> sane-devel mailing list: sane-devel at lists.alioth.debian.org > >> http://lists.alioth.debian.org/mailman/listinfo/sane-devel > >> Unsubscribe: Send mail with subject "unsubscribe your_password" > >> to sane-devel-request at lists.alioth.debian.org > >> > > > > > > -- > > "The truth is an offense, but not a sin" > > > -- "The truth is an offense, but not a sin"