motoprog:
It looks like the Device::SerialPort->new("/dev/ttyS0"); statement isn't returning a serial port for you. You should check things like that in your code. For example:
my $port = Device::SerialPort->new("/dev/ttyS0");
die "Can't open /dev/ttyS0: $!" if ! defined $port;
Please note: Your code may not have enough permissions to open the serial port. For some versions of *nix, you may not even have a /dev/ttyS0!
...roboticus
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No I haven't tried Arduino.
The script above worked when using it on my other ten year old laptop that ubuntu 10 installed on it and a serial port.
Now I have a new laptop with ubuntu 12 installed, and a laptop that only has USB ports. I would really like to get this programme going. I think it's a permission thing. When testing the ports my RS232 adapter does get identified. It's just when I run the script I get the baudrate message. Any ideas??
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Thanks to all for your efforts in the development of the CUPS driver/S
+ANE backend for Kodak Aio printers!
I had previously successfully installed the CUPS driver and would now
+like to document my experience installing the SANE backend for Kodak
+Aio for an ESP 5250 printer.
I run Ubuntu 10.10 on an old IBM Thinkpad laptop and I am a user rath
+er than a developer. This process took about 8 +/- hours of reading r
+elease notes, readme files, man pages, and forum posts and a good bit
+ of trial and error. Here's what finally worked for me:
1. From sourceforge.net/projects/cupsdriverkodak/files/scanning-saneba
+ckend Downloaded kodakaio-02.4.tar.gz Extracted to /home/kodak direct
+ory
2. Installed 3 of the recommended packages. libusb-dev was already ins
+talled on my system. sudo apt-get install libcups2-dev sudo apt-get i
+nstall libcupsimage2-dev sudo apt-get install libcupsdriver1-dev
3. Followed Release Notes instructions: cd kodakaio-02.4 cd sane-backe
+nds-kodakaio-02.4 ./configure --prefix=/usr --sysconfdir=/etc --local
+statedir=/var BACKENDS=kodakaio make sudo make install
4. Edited the file /etc/sane.d/kodakaio.conf # net autodiscovery (I do
+n't use wifi with this printer) usb 0x040a 0x4041 (ESP 5250 usb codes
+) scanimage -L still did not see the scanner
5. Edited the file /etc/sane.d/dll.conf kodakaio scanimage -L now sees
+ the scanner as root only (Note: The Release Notes seem to be in erro
+r here, referencing kodakaio.conf instead of dll.conf. As corrected,
+steps 4 and 5 should be reversed to match the Release Notes.)
6. Created a scanner group using system->Administration->Users and Gro
+ups and added myself to this group.
7. Created /etc/udev/rules.d/90-libsane.rules LABEL="libsane_usb_rules
+_begin" # Kodak ESP 5250 ATTRS{idVendor}=="040a", ATTRS{idProduct}=="
+4041", MODE="0664", GROUP="scanner", ENV{libsane_matched}="yes" LABEL
+="libsane_usb_rules_end"
8. scanimage -L now sees the scanner as myself(and root)
scanimage > mytestscanfile Simple Scan XSane Image Scanning Program Ar
+e all working under Ubuntu 10.10
I hope this summary helps someone save a few hours of research.
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