>>>>> "Magnus" == Magnus Therning <magnus@xxxxxxxxxxxx> writes:
Magnus> On Thu, May 8, 2014 at 10:56 AM, Uwe Bonnes
Magnus> <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>>>>> "Magnus" == Magnus Therning <magnus@xxxxxxxxxxxx> writes:
>>
Magnus> I'm completely new to using libftdi, but I'm running into
Magnus> problems a little sooner than I'd like. Hopefully it's
Magnus> something silly that someone on the list quickly can point me
Magnus> to. I've read the API reference, and searched online without
Magnus> finding anything that can explain the behaviour I see.
>>
>> If you need plain serial communication, why don't you use
>> /dev/ttyUSBx?
Magnus> The full application I want to port uses ftd2xx to find devices
Magnus> to talk to, I think doing that discovery is easiest via libftdi.
Magnus> However, maybe a combination works well enough, as long as I
Magnus> somehow can tie the items in a `ftdi_device_list` to
Magnus> /dev/ttyUSBx somehow.
To name the kernel device, I use udev. Look at appended udev rule. I program
deviced like:
usb 3-10: new full-speed USB device number 7 using xhci_hcd
usb 3-10: New USB device found, idVendor=0403, idProduct=6001
usb 3-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-10: Product: CPS_CONN
usb 3-10: Manufacturer: IKDA
usb 3-10: SerialNumber: 0003
and the udev rule created a link like:
crw-rw---- 1 root dialout 188, 0 8. Mai 12:00 ttyUSB0
lrwxrwxrwx 1 root root 7 8. Mai 12:00 CPS_CONN_0003_00 -> ttyUSB0
Magnus> Then it's of course also irritating; serial communication via
Magnus> libftdi ought to work, right? ;)
Well, is should. I tested your program on my own hardware with loopback
here, and nothing is read too. Perhaps somebody else has any hints?
Bye
--
Uwe Bonnes bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
# Files in /etc/udev/rules are called sorted order until first fit is found
#
# So use a low number for own rules
# Other files may also be overwritten
#
#FX2
SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="fffe",
ATTRS{idProduct}=="0018", GROUP:="users", MODE:="0660"
SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="fffe",
ATTRS{idProduct}=="001a", GROUP:="users", MODE:="0660"
SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="04b4",
ATTRS{idProduct}=="8613", RUN+="/sbin/fxload -v -t fx2 -I
/usr/share/usrp_main.ihx -D $tempnode "
#FT2232 Adapter
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6010", GROUP:="users", MODE:="0660"
#FT232 Adapter
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6001", GROUP:="users", MODE:="0660"
#FT Adapter
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6006", GROUP:="users", MODE:="0660"
#FT230 Adapter
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6015", GROUP:="users", MODE:="0660"
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0456",
ATTRS{idProduct}=="b403", GROUP:="users", MODE:="0660"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", ATTRS{../manufacturer}=="IKDA",
SYMLINK="%s{../product}_%s{../serial}_%s{bInterfaceNumber}"
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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