How to avoid using sudo for footswitch everytime?

[zenny]

Hi,

Installed footswitch with 'sudo make install' for the device ID 0c45:7404 as of below.

But running footswitch requires superuser everytime. How to avoid 'sudo' for running footswitch every time?! Thanks.

Cheers, /z

$ lsusb -d 0c45:7404 Bus 001 Device 003: ID 0c45:7404 Microdia

$ make cc footswitch.c common.c debug.c -o footswitch -Wall -I/usr/include/hidapi -lhidapi-libusb

$ sudo make install /usr/bin/install -c footswitch /usr/local/bin /usr/bin/install -c -m 644 19-footswitch.rules /etc/udev/rules.d

$ footswitch -r Cannot find footswitch with VID:PID=c45:7403 or VID:PID=c45:7404 [init(), footswitch.c:101]

$ sudo footswitch -r [sudo] password for zenny: [switch 1]: a [switch 2]: b [switch 3]: c

[rgerganov]

Could you paste the output of lsusb -v -d 0c45:7404?

[zenny]

$ lsusb -v -d 0c45:7404

Bus 001 Device 003: ID 0c45:7404 Microdia Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0c45 Microdia idProduct 0x7404 bcdDevice 0.01 iManufacturer 1 iProduct 2 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 59 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 1 Keyboard iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.10 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 260 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 10 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 2 Mouse iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.10 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 41 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 10

Maybe this could be useful:

$ dmesg | grep PCsensor [ 4.722210] usb 1-2.1: Manufacturer: PCsensor [ 4.733059] input: PCsensor FootSwitch3-F1.8 as /devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2.1/1-2.1:1.0/input/input11 [ 4.734918] hid-generic 0003:0C45:7404.000A: input,hidraw9: USB HID v1.10 Gamepad [PCsensor FootSwitch3-F1.8] on usb-0000:00:12.2-2.1/input0 [ 4.739577] hid-generic 0003:0C45:7404.000B: hiddev0,hidraw10: USB HID v1.10 Device [PCsensor FootSwitch3-F1.8] on usb-0000:00:12.2-2.1/input1

[rgerganov]

Could you try to update the first line of 19-footswitch.rules to be:

ATTR{product}=="*FootSwitch*"\

and try again?

[zenny]

Could you try to update the first line of 19-footswitch.rules to be:

ATTR{product}=="FootSwitch"\

and try again?

No changes.

NB: Sorry, the markdown converted "* FootSwitch *" to italic FootSwitch.

[rgerganov]

You put an asterisk before and after FootSwitch, right? If it doesn't work, you may try to use another attribute (like productId or vendorId) in the udev rule. I will also experiment later because I don't have the device right now.

[zenny]

You put an asterisk before and after FootSwitch, right?

Yep as of below:

$ grep -Rn ATTR /etc/udev/rules.d/19-footswitch.rules 1:ATTR{product}=="FootSwitch"\

Sorry, the markdown converted "* FootSwitch *" to italic FootSwitch.

[zenny]

Hi again,

Replacing /etc/udev/rules.d/19-footswitch.rules with the following let run footswitch without sudo:

KERNEL=="hidraw9[0-11]*", SUBSYSTEM=="hidraw", SUBSYSTEMS=="usb", ATTRS{idVendor}=="0C45", ATTRS{idProduct}=="7404", SYMLINK+="footswitch"

Let me know if there is an easier way than this. Thanks!

Cheers, /z

[zenny]

UPDATE: The above stopped working after a reboot, thus back to square one, forcing to use sudo with footswitch.

[zenny]

@rgerganov Did you have time to look at this issue? Appreciate that!

[rgerganov]

@zenny I cannot reproduce this problem with my device and my linux distro (Ubuntu). What linux distribution do you use?

[robrussell]

I had the same problem. Just tried the recommended change to

FootSwitch

and it worked for me.

So now my /etc/udev/rules.d/19-footswitch.rules contains

ATTR{product}=="*FootSwitch*"\
MODE:="0666"\
GROUP="hid"\
RUN+="keymap $name 0x70066 screenlock"\
SYMLINK+="footswitch"

[rgerganov]

@robrussell Thanks for the update. Could you paste the output of sudo lsusb -v so we can see the value of the product attribute of your device?

[hagemt]

A fast hack (important to understand what it does) is as follows:

sudo chown 0:0 footswitch
sudo chmod 6711 footswitch

This makes the executable always run as root, no matter who runs it.

[gbrayut]

You can match on ids instead of the name. The Product name for my 3 pedal switch from ebay was 413d/2107/0, so it was easier to just change the rule to:

ATTRS{idVendor}=="413d" ATTRS{idProduct}=="2107" MODE:="0666" GROUP="hid" RUN+="keymap $name 0x70066 screenlock" SYMLINK+="footswitch"