On 10/2/2014 8:24 PM, Ethan Rosenberg wrote: > On 10/01/2014 03:20 PM, Dan Ritter wrote: >> On Sat, Sep 27, 2014 at 11:26:48PM -0400, Ethan Rosenberg, PhD wrote: >>> Dear List - >>> >>> I have an Avery Berkel POS [Point Of Sale] scale which I wish to >>> integrate into a POS system. The output is sent to a RS232 port. I >>> do not know how to extract the data. >>> >>> Here is what I have about the RS232 port: >>> >>> ethan@meow:~$ dmesg | grep tty >>> [ 0.000000] console [tty0] enabled >>> [ 0.383854] 00:07: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = >>> 115200) is a 16550A >>> [ 0.404352] 0000:00:03.3: ttyS1 at I/O 0x1c90 (irq = 17, base_baud >>> = 115200) is a 16550A >>> >>> >>> root@meow:/home/ethan# setserial -g /dev/ttyS[0123] >>> /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4 >>> /dev/ttyS1, UART: 16550A, Port: 0x1c90, IRQ: 17 >>> /dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4 >>> /dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3 >>> >>> >>> More info from the manual -- >>> >>> 9600 baud, 7 data bits, even parity, 1 stop bit >>> >>> Transmits weight and scale status whenever ASCII 'W'<CR> is sent by >>> the POS terminal. >> >> Well, one option would be to install minicom (apt-get will find >> it for you), set your default serial port to /dev/ttyS0, set it >> at 9600,7,e,1. Then plug it in and see if tapping W gets you >> a response. >> >> /dev/ttyS0 will look just like a file, if you're writing a >> program, and you can read from it and write to it just like any >> other file. >> >> -dsr- >> > Dan - > > EXCELLENT!! > > Minicom set up as 9600,7,e,1. > Terminal ANSI > No response from tapping W. > > TIA > > Ethan > >
In addition to Dan's comments - is your cable OK? Do you need a straight-through cable or a cross-over cable? Does the terminal require/honor DSR/TSR and RTS/CTS? If so, are these lines active? You may need a breakout box on the cable to see what's happening on the lines. Jerry -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/542f0c80.6080...@attglobal.net