hie everyOne,

I have one device having (cypress)FX2LP for usb connectivity. and i have developed one code using cypress's CyUSB utility (which uses libusb wrapper) in Linux which displays the device descripotor of the device and logs it in log file.


but for this i have run the code. to get this. Actually i wanted to do like whenever i plug my device the code i have written should run automatically n logs the descriptors in file.

i know this can be done with kind of daemon process i am trying but i am not able to understand the things how to do this



please do rply i want to make it happen (i am working in linux)

regards
Rohan

Hi

Not an expert on this, but it sounds like you want to make some udev rule.

http://www.linuxforu.com/2012/06/som...-and-examples/

Not sure how you can identify your device from others, but looking at dmesg after plugging it in can give a clue.

1 members found this post helpful.

dear sir,

Thanks for your rply

i have one .config file and .rule file also so its detecting ma device n showing in dmesg but how can i run ma code whenever device gets connected. i know i am asking very specific ans but please do rply

here is ma .rule file

KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="add", ATTR{idVendor}=="04b4", MODE="666", TAG="cyusb_dev", RUN+="/usr/bin/cy_renumerate.sh A"
KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="remove", TAG=="cyusb_dev", RUN+="/usr/bin/cy_renumerate.sh R"

regards
rohan

helloOO everyone,

still need the help


regards
rohaan

If you have an /sbin/hotplug program, the kernel might execute it, whenever something is plugged or unplugged (if not: echo /sbin/hotplug > /proc/sys/kernel/hotplug)
http://www.mjmwired.net/kernel/Docum...sb/hotplug.txt

1 members found this post helpful.

Dear sir,

i have written code using libusb n cyusb so right now i am not really working at kernel level

cant i run ma code(which diplays the device descriptors), using .rule file. taking event from there???

KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="add", ATTR{idVendor}=="04b4", MODE="666", TAG="cyusb_dev", RUN+="/usr/bin/cy_renumerate.sh A"
KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="remove", TAG=="cyusb_dev", RUN+="/usr/bin/cy_renumerate.sh R"

i tried to add another RUN+="usr/bin/run_code" in above rule like,

KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="add", ATTR{idVendor}=="04b4", MODE="666", TAG="cyusb_dev", RUN+="/usr/bin/run_code.sh A"
KERNEL=="*", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ACTION=="remove", TAG=="cyusb_dev", RUN+="/usr/bin/run_code.sh R"

but the script didnt run on plugging of the device

script is
#!/bin/bash

echo "its running" > /home/ivb/cyusb_linux_1.0.3/rohan/log/desc_log.txt
~

please let me more about these RUN+= facility can i run multiple scripts thru this how?

thanking you for ur time n rply sir

Regards
rohan

In need of your expert help

Anyone plz do help me

thanks & Regards
rohan

i tried to run that script through lot of ways but it didnt work out. multiple use of RUN+= is very farr away its not even running my simple script shown above do help me about this

plzZZZZ sir anyone who knws this do rply
Thanks & Regards
Rohan

Hi

How do you expect experts to solve your problem, when we can't even see what you're trying? What exactly are these udev rules? Post the rule files and use code tags.

1 members found this post helpful.

sry sir i didnt mean only experts should solve my problem. i am learner so for me evryone is expert who shows me the way to try. i never meant it in a wrong way, sry again for my bad english.

i have one cypress USB controller device, and want run ma developed code on the plug of the device.

i am trying with .rule file in /etc/udev/rules.d/

i want to run this script run_code.sh on every hot plug event
i know we can not run long execution program through this. so program has to detach itself but i am not getting sucuss in this

please consider my request n help me in this

Regards
rohan

Thank you everybody for your replyz

i done with

ma device's vendorID got changed so it was not taking the plug event

thanks again

n thanks you Guttorm sir for advices me some points and udev rule
take care

Regards
rohan