'프로그램 사용/uinput' 카테고리의 글 목록

'프로그램 사용/uinput'에 해당되는 글 12건

2026.01.20 evemu-describe, udevadm
2024.03.13 uinput touch 장치 흉내내기
2024.03.12 touchscreen 장치 프로토콜 분석
2024.03.12 uinput 으로 touchscreen을 만들기
2022.08.11 uinput을 이용한 절대좌표 입력 기기 만들기 8
2022.08.05 struct uinput_setup 와 struct uinput_user_dev
2022.08.05 uinput 터치 스크린 예제
2022.08.05 evbug - 키보드/마우스 입력 디버깅 하기
2022.03.04 uinput 장치 확인
2022.02.23 uinput absolute mouse

evemu-describe, udevadm

hid 장치의 종류라고 하긴 애매한데..

아무튼 포인팅 디바이스 인지, 터치 디바이스인지 확인하기 위한 툴

$ sudo evemu-describe
Available devices:
/dev/input/event0: Lid Switch
/dev/input/event1: Power Button
/dev/input/event2: Power Button
/dev/input/event3: AT Translated Set 2 keyboard
/dev/input/event4: ELAN0B00:00 04F3:3136 Mouse
/dev/input/event5: ELAN0B00:00 04F3:3136 Touchpad
/dev/input/event6: ELAN902C:00 04F3:2AC2
/dev/input/event7: ELAN902C:00 04F3:2AC2 UNKNOWN
/dev/input/event8: ELAN902C:00 04F3:2AC2 UNKNOWN
/dev/input/event9: WCOM0111:00 2D1F:010D Stylus
/dev/input/event10: WCOM0111:00 2D1F:010D
/dev/input/event11: Logitech USB Optical Mouse
/dev/input/event12: CHERRY Mechanical Keyboard
/dev/input/event13: CHERRY Mechanical Keyboard
/dev/input/event14: CHERRY Mechanical Keyboard
/dev/input/event15: CHERRY Mechanical Keyboard Mouse
/dev/input/event16: Intel HID events
/dev/input/event17: Intel HID 5 button array
/dev/input/event18: Video Bus
/dev/input/event19: sof-hda-dsp Mic
/dev/input/event20: sof-hda-dsp Headphone
/dev/input/event21: sof-hda-dsp HDMI/DP,pcm=3
/dev/input/event22: sof-hda-dsp HDMI/DP,pcm=4
/dev/input/event23: sof-hda-dsp HDMI/DP,pcm=5
/dev/input/event24: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
/dev/input/event25: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
Select the device event number [0-25]: 24
# EVEMU 1.3
# Kernel: 6.8.0-90-generic
# DMI: dmi:bvnAmericanMegatrendsInc.:bvrP07RFG.042.201224.FL:bd12/24/2020:br5.16:svnSAMSUNGELECTRONICSCO.,LTD.:pn730QCJ/730QCR:pvrP07RFG:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNT730QCR-A716A:rvrSGLFREEDOS-C00-R000-S0000+1.0.0000:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:skuSCAI-A5A5-A5A5-A5A5-PRFG:
# Input device name: "eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 "
# Input device ID: bus 0x03 vendor 0xeef product 0xc000 version 0x111
# Size in mm: 292x227
# Supported events:
#   Event type 0 (EV_SYN)
#     Event code 0 (SYN_REPORT)
#     Event code 1 (SYN_CONFIG)
#     Event code 2 (SYN_MT_REPORT)
#     Event code 3 (SYN_DROPPED)
#     Event code 4 ((null))
#     Event code 5 ((null))
#     Event code 6 ((null))
#     Event code 7 ((null))
#     Event code 8 ((null))
#     Event code 9 ((null))
#     Event code 10 ((null))
#     Event code 11 ((null))
#     Event code 12 ((null))
#     Event code 13 ((null))
#     Event code 14 ((null))
#     Event code 15 (SYN_MAX)
#   Event type 1 (EV_KEY)
#     Event code 330 (BTN_TOUCH)
#   Event type 3 (EV_ABS)
#     Event code 0 (ABS_X)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution  14
#     Event code 1 (ABS_Y)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution  18
#     Event code 47 (ABS_MT_SLOT)
#       Value        0
#       Min          0
#       Max          9
#       Fuzz         0
#       Flat         0
#       Resolution   0
#     Event code 53 (ABS_MT_POSITION_X)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution  14
#     Event code 54 (ABS_MT_POSITION_Y)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution  18
#     Event code 57 (ABS_MT_TRACKING_ID)
#       Value        0
#       Min          0
#       Max      65535
#       Fuzz         0
#       Flat         0
#       Resolution   0
#   Event type 4 (EV_MSC)
#     Event code 5 (MSC_TIMESTAMP)
# Properties:
#   Property  type 1 (INPUT_PROP_DIRECT)
N: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
I: 0003 0eef c000 0111
P: 02 00 00 00 00 00 00 00
B: 00 0b 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 04 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 02 00 00 00 00 00 00 00 00
B: 03 03 00 00 00 00 80 60 02
B: 04 20 00 00 00 00 00 00 00
B: 05 00 00 00 00 00 00 00 00
B: 11 00 00 00 00 00 00 00 00
B: 12 00 00 00 00 00 00 00 00
B: 14 00 00 00 00 00 00 00 00
B: 15 00 00 00 00 00 00 00 00
B: 15 00 00 00 00 00 00 00 00
A: 00 0 4095 0 0 14
A: 01 0 4095 0 0 18
A: 2f 0 9 0 0 0
A: 35 0 4095 0 0 14
A: 36 0 4095 0 0 18
A: 39 0 65535 0 0 0

$ sudo  evemu-describe
Available devices:
/dev/input/event0: Lid Switch
/dev/input/event1: Power Button
/dev/input/event2: Power Button
/dev/input/event3: AT Translated Set 2 keyboard
/dev/input/event4: ELAN0B00:00 04F3:3136 Mouse
/dev/input/event5: ELAN0B00:00 04F3:3136 Touchpad
/dev/input/event6: ELAN902C:00 04F3:2AC2
/dev/input/event7: ELAN902C:00 04F3:2AC2 UNKNOWN
/dev/input/event8: ELAN902C:00 04F3:2AC2 UNKNOWN
/dev/input/event9: WCOM0111:00 2D1F:010D Stylus
/dev/input/event10: WCOM0111:00 2D1F:010D
/dev/input/event11: Logitech USB Optical Mouse
/dev/input/event12: CHERRY Mechanical Keyboard
/dev/input/event13: CHERRY Mechanical Keyboard
/dev/input/event14: CHERRY Mechanical Keyboard
/dev/input/event15: CHERRY Mechanical Keyboard Mouse
/dev/input/event16: Intel HID events
/dev/input/event17: Intel HID 5 button array
/dev/input/event18: Video Bus
/dev/input/event19: sof-hda-dsp Mic
/dev/input/event20: sof-hda-dsp Headphone
/dev/input/event21: sof-hda-dsp HDMI/DP,pcm=3
/dev/input/event22: sof-hda-dsp HDMI/DP,pcm=4
/dev/input/event23: sof-hda-dsp HDMI/DP,pcm=5
/dev/input/event24: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
/dev/input/event25: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
Select the device event number [0-25]: 25
# EVEMU 1.3
# Kernel: 6.8.0-90-generic
# DMI: dmi:bvnAmericanMegatrendsInc.:bvrP07RFG.042.201224.FL:bd12/24/2020:br5.16:svnSAMSUNGELECTRONICSCO.,LTD.:pn730QCJ/730QCR:pvrP07RFG:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNT730QCR-A716A:rvrSGLFREEDOS-C00-R000-S0000+1.0.0000:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:skuSCAI-A5A5-A5A5-A5A5-PRFG:
# Input device name: "eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00"
# Input device ID: bus 0x03 vendor 0xeef product 0xc000 version 0x111
# Supported events:
#   Event type 0 (EV_SYN)
#     Event code 0 (SYN_REPORT)
#     Event code 1 (SYN_CONFIG)
#     Event code 2 (SYN_MT_REPORT)
#     Event code 3 (SYN_DROPPED)
#     Event code 4 ((null))
#     Event code 5 ((null))
#     Event code 6 ((null))
#     Event code 7 ((null))
#     Event code 8 ((null))
#     Event code 9 ((null))
#     Event code 10 ((null))
#     Event code 11 ((null))
#     Event code 12 ((null))
#     Event code 13 ((null))
#     Event code 14 ((null))
#     Event code 15 (SYN_MAX)
#   Event type 1 (EV_KEY)
#     Event code 272 (BTN_LEFT)
#     Event code 273 (BTN_RIGHT)
#   Event type 3 (EV_ABS)
#     Event code 0 (ABS_X)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution   0
#     Event code 1 (ABS_Y)
#       Value        0
#       Min          0
#       Max       4095
#       Fuzz         0
#       Flat         0
#       Resolution   0

#   Event type 4 (EV_MSC)
#     Event code 4 (MSC_SCAN)
# Properties:
N: eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00
I: 0003 0eef c000 0111
P: 00 00 00 00 00 00 00 00
B: 00 0b 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 03 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 01 00 00 00 00 00 00 00 00
B: 02 00 00 00 00 00 00 00 00
B: 03 03 00 00 00 00 00 00 00
B: 04 10 00 00 00 00 00 00 00
B: 05 00 00 00 00 00 00 00 00
B: 11 00 00 00 00 00 00 00 00
B: 12 00 00 00 00 00 00 00 00
B: 14 00 00 00 00 00 00 00 00
B: 15 00 00 00 00 00 00 00 00
B: 15 00 00 00 00 00 00 00 00
A: 00 0 4095 0 0 0
A: 01 0 4095 0 0 0

[링크 : https://man.archlinux.org/man/evemu-describe.1]

https://wiki.ubuntu.com/Multitouch/Testing/Evemu

얘는 udev management tool 이라고 하니

이걸 uinput이 아니라 udev라고 하나 따로 파야하나..?

$ udevadm info -a -n /dev/input/event24

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A/input/input37/event24':
    KERNEL=="event24"
    SUBSYSTEM=="input"
    DRIVER==""
    ATTR{power/async}=="disabled"
    ATTR{power/control}=="auto"
    ATTR{power/runtime_active_kids}=="0"
    ATTR{power/runtime_active_time}=="0"
    ATTR{power/runtime_enabled}=="disabled"
    ATTR{power/runtime_status}=="unsupported"
    ATTR{power/runtime_suspended_time}=="0"
    ATTR{power/runtime_usage}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A/input/input37':
    KERNELS=="input37"
    SUBSYSTEMS=="input"
    DRIVERS==""
    ATTRS{capabilities/abs}=="260800000000003"
    ATTRS{capabilities/ev}=="1b"
    ATTRS{capabilities/ff}=="0"
    ATTRS{capabilities/key}=="400 0 0 0 0 0"
    ATTRS{capabilities/led}=="0"
    ATTRS{capabilities/msc}=="20"
    ATTRS{capabilities/rel}=="0"
    ATTRS{capabilities/snd}=="0"
    ATTRS{capabilities/sw}=="0"
    ATTRS{id/bustype}=="0003"
    ATTRS{id/product}=="c000"
    ATTRS{id/vendor}=="0eef"
    ATTRS{id/version}=="0111"
    ATTRS{inhibited}=="0"
    ATTRS{name}=="eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00"
    ATTRS{phys}=="usb-0000:00:14.0-2/input0"
    ATTRS{power/async}=="disabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{properties}=="2"
    ATTRS{uniq}==""

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A':
    KERNELS=="0003:0EEF:C000.000A"
    SUBSYSTEMS=="hid"
    DRIVERS=="hid-multitouch"
    ATTRS{country}=="00"
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{quirks}=="334864"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0':
    KERNELS=="1-2:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="usbhid"
    ATTRS{authorized}=="1"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bInterfaceClass}=="03"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bInterfaceProtocol}=="02"
    ATTRS{bInterfaceSubClass}=="01"
    ATTRS{bNumEndpoints}=="01"
    ATTRS{physical_location/dock}=="no"
    ATTRS{physical_location/horizontal_position}=="center"
    ATTRS{physical_location/lid}=="no"
    ATTRS{physical_location/panel}=="unknown"
    ATTRS{physical_location/vertical_position}=="center"
    ATTRS{power/async}=="enabled"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="suspended"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2':
    KERNELS=="1-2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="150mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0000"
    ATTRS{bmAttributes}=="a0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}=="eGalax Inc."
    ATTRS{devnum}=="15"
    ATTRS{devpath}=="2"
    ATTRS{idProduct}=="c000"
    ATTRS{idVendor}=="0eef"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="eGalax Inc."
    ATTRS{maxchild}=="0"
    ATTRS{physical_location/dock}=="no"
    ATTRS{physical_location/horizontal_position}=="center"
    ATTRS{physical_location/lid}=="no"
    ATTRS{physical_location/panel}=="unknown"
    ATTRS{physical_location/vertical_position}=="center"
    ATTRS{power/active_duration}=="56314"
    ATTRS{power/async}=="enabled"
    ATTRS{power/autosuspend}=="2"
    ATTRS{power/autosuspend_delay_ms}=="2000"
    ATTRS{power/connected_duration}=="56315"
    ATTRS{power/control}=="on"
    ATTRS{power/level}=="on"
    ATTRS{power/persist}=="1"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="56074"
    ATTRS{power/runtime_enabled}=="forbidden"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="1"
    ATTRS{power/wakeup}=="disabled"
    ATTRS{power/wakeup_abort_count}==""
    ATTRS{power/wakeup_active}==""
    ATTRS{power/wakeup_active_count}==""
    ATTRS{power/wakeup_count}==""
    ATTRS{power/wakeup_expire_count}==""
    ATTRS{power/wakeup_last_time_ms}==""
    ATTRS{power/wakeup_max_time_ms}==""
    ATTRS{power/wakeup_total_time_ms}==""
    ATTRS{product}=="eGalaxTouch EXC3188-3374-08.00.00.00 LSE 19""
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="removable"
    ATTRS{rx_lanes}=="1"
    ATTRS{speed}=="12"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="16"
    ATTRS{version}==" 1.10"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1':
    KERNELS=="usb1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{authorized_default}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0608"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}==""
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{idProduct}=="0002"
    ATTRS{idVendor}=="1d6b"
    ATTRS{interface_authorized_default}=="1"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Linux 6.8.0-90-generic xhci-hcd"
    ATTRS{maxchild}=="12"
    ATTRS{power/active_duration}=="24429762"
    ATTRS{power/async}=="enabled"
    ATTRS{power/autosuspend}=="0"
    ATTRS{power/autosuspend_delay_ms}=="0"
    ATTRS{power/connected_duration}=="24430129"
    ATTRS{power/control}=="auto"
    ATTRS{power/level}=="auto"
    ATTRS{power/runtime_active_kids}=="3"
    ATTRS{power/runtime_active_time}=="24430039"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{power/wakeup}=="disabled"
    ATTRS{power/wakeup_abort_count}==""
    ATTRS{power/wakeup_active}==""
    ATTRS{power/wakeup_active_count}==""
    ATTRS{power/wakeup_count}==""
    ATTRS{power/wakeup_expire_count}==""
    ATTRS{power/wakeup_last_time_ms}==""
    ATTRS{power/wakeup_max_time_ms}==""
    ATTRS{power/wakeup_total_time_ms}==""
    ATTRS{product}=="xHCI Host Controller"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="unknown"
    ATTRS{rx_lanes}=="1"
    ATTRS{serial}=="0000:00:14.0"
    ATTRS{speed}=="480"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="515"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/pci0000:00/0000:00:14.0':
    KERNELS=="0000:00:14.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="xhci_hcd"
    ATTRS{ari_enabled}=="0"
    ATTRS{broken_parity_status}=="0"
    ATTRS{class}=="0x0c0330"
    ATTRS{consistent_dma_mask_bits}=="64"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{dbc}=="disabled"
    ATTRS{dbc_bInterfaceProtocol}=="01"
    ATTRS{dbc_bcdDevice}=="0010"
    ATTRS{dbc_idProduct}=="0010"
    ATTRS{dbc_idVendor}=="1d6b"
    ATTRS{device}=="0x02ed"
    ATTRS{dma_mask_bits}=="64"
    ATTRS{driver_override}=="(null)"
    ATTRS{enable}=="1"
    ATTRS{index}=="5"
    ATTRS{irq}=="123"
    ATTRS{label}=="Onboard - Other"
    ATTRS{local_cpulist}=="0-7"
    ATTRS{local_cpus}=="ff"
    ATTRS{msi_bus}=="1"
    ATTRS{msi_irqs/123}=="msi"
    ATTRS{msi_irqs/124}=="msi"
    ATTRS{msi_irqs/125}=="msi"
    ATTRS{msi_irqs/126}=="msi"
    ATTRS{msi_irqs/127}=="msi"
    ATTRS{msi_irqs/128}=="msi"
    ATTRS{msi_irqs/129}=="msi"
    ATTRS{msi_irqs/130}=="msi"
    ATTRS{numa_node}=="-1"
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="2"
    ATTRS{power/runtime_active_time}=="24430715"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{power/wakeup}=="enabled"
    ATTRS{power/wakeup_abort_count}=="0"
    ATTRS{power/wakeup_active}=="0"
    ATTRS{power/wakeup_active_count}=="1"
    ATTRS{power/wakeup_count}=="0"
    ATTRS{power/wakeup_expire_count}=="1"
    ATTRS{power/wakeup_last_time_ms}=="10084055"
    ATTRS{power/wakeup_max_time_ms}=="108"
    ATTRS{power/wakeup_total_time_ms}=="108"
    ATTRS{power_state}=="D0"
    ATTRS{revision}=="0x00"
    ATTRS{subsystem_device}=="0xc832"
    ATTRS{subsystem_vendor}=="0x144d"
    ATTRS{vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="10"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{waiting_for_supplier}=="0"

$ udevadm info -a -n /dev/input/event25

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A/input/input39/event25':
    KERNEL=="event25"
    SUBSYSTEM=="input"
    DRIVER==""
    ATTR{power/async}=="disabled"
    ATTR{power/control}=="auto"
    ATTR{power/runtime_active_kids}=="0"
    ATTR{power/runtime_active_time}=="0"
    ATTR{power/runtime_enabled}=="disabled"
    ATTR{power/runtime_status}=="unsupported"
    ATTR{power/runtime_suspended_time}=="0"
    ATTR{power/runtime_usage}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A/input/input39':
    KERNELS=="input39"
    SUBSYSTEMS=="input"
    DRIVERS==""
    ATTRS{capabilities/abs}=="3"
    ATTRS{capabilities/ev}=="1b"
    ATTRS{capabilities/ff}=="0"
    ATTRS{capabilities/key}=="30000 0 0 0 0"
    ATTRS{capabilities/led}=="0"
    ATTRS{capabilities/msc}=="10"
    ATTRS{capabilities/rel}=="0"
    ATTRS{capabilities/snd}=="0"
    ATTRS{capabilities/sw}=="0"
    ATTRS{id/bustype}=="0003"
    ATTRS{id/product}=="c000"
    ATTRS{id/vendor}=="0eef"
    ATTRS{id/version}=="0111"
    ATTRS{inhibited}=="0"
    ATTRS{name}=="eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 UNKNOWN"
    ATTRS{phys}=="usb-0000:00:14.0-2/input0"
    ATTRS{power/async}=="disabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{properties}=="0"
    ATTRS{uniq}==""

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000A':
    KERNELS=="0003:0EEF:C000.000A"
    SUBSYSTEMS=="hid"
    DRIVERS=="hid-multitouch"
    ATTRS{country}=="00"
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{quirks}=="334864"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0':
    KERNELS=="1-2:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="usbhid"
    ATTRS{authorized}=="1"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bInterfaceClass}=="03"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bInterfaceProtocol}=="02"
    ATTRS{bInterfaceSubClass}=="01"
    ATTRS{bNumEndpoints}=="01"
    ATTRS{physical_location/dock}=="no"
    ATTRS{physical_location/horizontal_position}=="center"
    ATTRS{physical_location/lid}=="no"
    ATTRS{physical_location/panel}=="unknown"
    ATTRS{physical_location/vertical_position}=="center"
    ATTRS{power/async}=="enabled"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="suspended"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2':
    KERNELS=="1-2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="150mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0000"
    ATTRS{bmAttributes}=="a0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}=="eGalax Inc."
    ATTRS{devnum}=="15"
    ATTRS{devpath}=="2"
    ATTRS{idProduct}=="c000"
    ATTRS{idVendor}=="0eef"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="eGalax Inc."
    ATTRS{maxchild}=="0"
    ATTRS{physical_location/dock}=="no"
    ATTRS{physical_location/horizontal_position}=="center"
    ATTRS{physical_location/lid}=="no"
    ATTRS{physical_location/panel}=="unknown"
    ATTRS{physical_location/vertical_position}=="center"
    ATTRS{power/active_duration}=="293260"
    ATTRS{power/async}=="enabled"
    ATTRS{power/autosuspend}=="2"
    ATTRS{power/autosuspend_delay_ms}=="2000"
    ATTRS{power/connected_duration}=="293260"
    ATTRS{power/control}=="on"
    ATTRS{power/level}=="on"
    ATTRS{power/persist}=="1"
    ATTRS{power/runtime_active_kids}=="0"
    ATTRS{power/runtime_active_time}=="293019"
    ATTRS{power/runtime_enabled}=="forbidden"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="1"
    ATTRS{power/wakeup}=="disabled"
    ATTRS{power/wakeup_abort_count}==""
    ATTRS{power/wakeup_active}==""
    ATTRS{power/wakeup_active_count}==""
    ATTRS{power/wakeup_count}==""
    ATTRS{power/wakeup_expire_count}==""
    ATTRS{power/wakeup_last_time_ms}==""
    ATTRS{power/wakeup_max_time_ms}==""
    ATTRS{power/wakeup_total_time_ms}==""
    ATTRS{product}=="eGalaxTouch EXC3188-3374-08.00.00.00 LSE 19""
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="removable"
    ATTRS{rx_lanes}=="1"
    ATTRS{speed}=="12"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="16"
    ATTRS{version}==" 1.10"

  looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1':
    KERNELS=="usb1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{authorized_default}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0608"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="1"
    ATTRS{configuration}==""
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{idProduct}=="0002"
    ATTRS{idVendor}=="1d6b"
    ATTRS{interface_authorized_default}=="1"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Linux 6.8.0-90-generic xhci-hcd"
    ATTRS{maxchild}=="12"
    ATTRS{power/active_duration}=="24666705"
    ATTRS{power/async}=="enabled"
    ATTRS{power/autosuspend}=="0"
    ATTRS{power/autosuspend_delay_ms}=="0"
    ATTRS{power/connected_duration}=="24667072"
    ATTRS{power/control}=="auto"
    ATTRS{power/level}=="auto"
    ATTRS{power/runtime_active_kids}=="3"
    ATTRS{power/runtime_active_time}=="24666982"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{power/wakeup}=="disabled"
    ATTRS{power/wakeup_abort_count}==""
    ATTRS{power/wakeup_active}==""
    ATTRS{power/wakeup_active_count}==""
    ATTRS{power/wakeup_count}==""
    ATTRS{power/wakeup_expire_count}==""
    ATTRS{power/wakeup_last_time_ms}==""
    ATTRS{power/wakeup_max_time_ms}==""
    ATTRS{power/wakeup_total_time_ms}==""
    ATTRS{product}=="xHCI Host Controller"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="unknown"
    ATTRS{rx_lanes}=="1"
    ATTRS{serial}=="0000:00:14.0"
    ATTRS{speed}=="480"
    ATTRS{tx_lanes}=="1"
    ATTRS{urbnum}=="515"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/pci0000:00/0000:00:14.0':
    KERNELS=="0000:00:14.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="xhci_hcd"
    ATTRS{ari_enabled}=="0"
    ATTRS{broken_parity_status}=="0"
    ATTRS{class}=="0x0c0330"
    ATTRS{consistent_dma_mask_bits}=="64"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{dbc}=="disabled"
    ATTRS{dbc_bInterfaceProtocol}=="01"
    ATTRS{dbc_bcdDevice}=="0010"
    ATTRS{dbc_idProduct}=="0010"
    ATTRS{dbc_idVendor}=="1d6b"
    ATTRS{device}=="0x02ed"
    ATTRS{dma_mask_bits}=="64"
    ATTRS{driver_override}=="(null)"
    ATTRS{enable}=="1"
    ATTRS{index}=="5"
    ATTRS{irq}=="123"
    ATTRS{label}=="Onboard - Other"
    ATTRS{local_cpulist}=="0-7"
    ATTRS{local_cpus}=="ff"
    ATTRS{msi_bus}=="1"
    ATTRS{msi_irqs/123}=="msi"
    ATTRS{msi_irqs/124}=="msi"
    ATTRS{msi_irqs/125}=="msi"
    ATTRS{msi_irqs/126}=="msi"
    ATTRS{msi_irqs/127}=="msi"
    ATTRS{msi_irqs/128}=="msi"
    ATTRS{msi_irqs/129}=="msi"
    ATTRS{msi_irqs/130}=="msi"
    ATTRS{numa_node}=="-1"
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="2"
    ATTRS{power/runtime_active_time}=="24667656"
    ATTRS{power/runtime_enabled}=="enabled"
    ATTRS{power/runtime_status}=="active"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{power/wakeup}=="enabled"
    ATTRS{power/wakeup_abort_count}=="0"
    ATTRS{power/wakeup_active}=="0"
    ATTRS{power/wakeup_active_count}=="1"
    ATTRS{power/wakeup_count}=="0"
    ATTRS{power/wakeup_expire_count}=="1"
    ATTRS{power/wakeup_last_time_ms}=="10084055"
    ATTRS{power/wakeup_max_time_ms}=="108"
    ATTRS{power/wakeup_total_time_ms}=="108"
    ATTRS{power_state}=="D0"
    ATTRS{revision}=="0x00"
    ATTRS{subsystem_device}=="0xc832"
    ATTRS{subsystem_vendor}=="0x144d"
    ATTRS{vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""
    ATTRS{power/async}=="enabled"
    ATTRS{power/control}=="auto"
    ATTRS{power/runtime_active_kids}=="10"
    ATTRS{power/runtime_active_time}=="0"
    ATTRS{power/runtime_enabled}=="disabled"
    ATTRS{power/runtime_status}=="unsupported"
    ATTRS{power/runtime_suspended_time}=="0"
    ATTRS{power/runtime_usage}=="0"
    ATTRS{waiting_for_supplier}=="0"

[링크 : https://linux.die.net/man/8/udevadm]

+

2026.01.21

$ udevadm info /dev/input/event24
P: /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000D/input/input46/event24
N: input/event24
L: 0
S: input/by-id/usb-eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_-event-if00
S: input/by-path/pci-0000:00:14.0-usb-0:2:1.0-event
E: DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000D/input/input46/event24
E: DEVNAME=/dev/input/event24
E: MAJOR=13
E: MINOR=88
E: SUBSYSTEM=input
E: USEC_INITIALIZED=83733664720
E: ID_INPUT=1
E: ID_INPUT_TOUCHSCREEN=1
E: ID_INPUT_WIDTH_MM=292
E: ID_INPUT_HEIGHT_MM=227
E: ID_VENDOR=eGalax_Inc.
E: ID_VENDOR_ENC=eGalax\x20Inc.
E: ID_VENDOR_ID=0eef
E: ID_MODEL=eGalaxTouch_EXC3188-3374-08.00.00.00__
E: ID_MODEL_ENC=eGalaxTouch\x20EXC3188-3374-08.00.00.00\x20\x22
E: ID_MODEL_ID=c000
E: ID_REVISION=0000
E: ID_SERIAL=eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_
E: ID_TYPE=hid
E: ID_BUS=usb
E: ID_USB_INTERFACES=:030102:
E: ID_USB_INTERFACE_NUM=00
E: ID_USB_DRIVER=usbhid
E: ID_PATH=pci-0000:00:14.0-usb-0:2:1.0
E: ID_PATH_TAG=pci-0000_00_14_0-usb-0_2_1_0
E: LIBINPUT_DEVICE_GROUP=3/eef/c000:usb-0000:00:14.0-2
E: DEVLINKS=/dev/input/by-id/usb-eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_event-if00 /dev/input/by-path/pci-0000:00:14.0-usb-0:2:1.0-event

$ udevadm info /dev/input/event25
P: /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000D/input/input48/event25
N: input/event25
L: 0
S: input/by-id/usb-eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_-event-mouse
S: input/by-path/pci-0000:00:14.0-usb-0:2:1.0-event-mouse
E: DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:0EEF:C000.000D/input/input48/event25
E: DEVNAME=/dev/input/event25
E: MAJOR=13
E: MINOR=89
E: SUBSYSTEM=input
E: USEC_INITIALIZED=83733585165
E: ID_INPUT=1
E: ID_INPUT_MOUSE=1
E: ID_VENDOR=eGalax_Inc.
E: ID_VENDOR_ENC=eGalax\x20Inc.
E: ID_VENDOR_ID=0eef
E: ID_MODEL=eGalaxTouch_EXC3188-3374-08.00.00.00__
E: ID_MODEL_ENC=eGalaxTouch\x20EXC3188-3374-08.00.00.00\x20\x22
E: ID_MODEL_ID=c000
E: ID_REVISION=0000
E: ID_SERIAL=eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_
E: ID_TYPE=hid
E: ID_BUS=usb
E: ID_USB_INTERFACES=:030102:
E: ID_USB_INTERFACE_NUM=00
E: ID_USB_DRIVER=usbhid
E: ID_PATH=pci-0000:00:14.0-usb-0:2:1.0
E: ID_PATH_TAG=pci-0000_00_14_0-usb-0_2_1_0
E: LIBINPUT_DEVICE_GROUP=3/eef/c000:usb-0000:00:14.0-2
E: DEVLINKS=/dev/input/by-id/usb-eGalax_Inc._eGalaxTouch_EXC3188-3374-08.00.00.00_-event-mouse /dev/input/by-path/pci-0000:00:14.0-usb-0:2:1.0-event-mouse

저작자표시 (새창열림)

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Posted by 구차니

uinput touch 장치 흉내내기

실제 장치에서 터치 한번 하는걸 흉내냈는데 안되서, 프로토콜 대로 구현하니 된다.

linux 5.10.72 이긴 한데 그거 영향인진 모르겠지만

Protocol A 로 구현하니 커서나 클릭도 안되는 것 같고

Protocol B를 따라 구현하니 된다.

3.4. Protocol Example B
Here is what a minimal event sequence for a two-contact touch would look like for a type B device:

ABS_MT_SLOT 0
ABS_MT_TRACKING_ID 45
ABS_MT_POSITION_X x[0]
ABS_MT_POSITION_Y y[0]
ABS_MT_SLOT 1
ABS_MT_TRACKING_ID 46
ABS_MT_POSITION_X x[1]
ABS_MT_POSITION_Y y[1]
SYN_REPORT
Here is the sequence after moving contact 45 in the x direction:

ABS_MT_SLOT 0
ABS_MT_POSITION_X x[0]
SYN_REPORT
Here is the sequence after lifting the contact in slot 0:

ABS_MT_TRACKING_ID -1
SYN_REPORT

[링크 : https://docs.kernel.org/input/multi-touch-protocol.html]

초기화

    struct uinput_setup usetup;
    int keys[] = {BTN_TOUCH}; // BTN_LEFT, BTN_RIGHT,

    fd_touch = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
ioctl(fd_touch, UI_SET_EVBIT, EV_KEY);
    for(int i = 0; i < sizeof(keys) / sizeof(int); i++){
        ioctl(fd_touch, UI_SET_KEYBIT, keys[i]);
    }

    //Mouse Pointer events init
    ret = ioctl(fd_touch, UI_SET_EVBIT, EV_ABS);
    ret = ioctl(fd_touch, UI_SET_ABSBIT, ABS_MT_SLOT);
    ret = ioctl(fd_touch, UI_SET_ABSBIT, ABS_MT_POSITION_X);
    ret = ioctl(fd_touch, UI_SET_ABSBIT, ABS_MT_POSITION_Y);
    ret = ioctl(fd_touch, UI_SET_EVBIT, EV_SYN);

    struct uinput_abs_setup abs_setup_x;
    struct uinput_abs_setup abs_setup_y;
    memset(&abs_setup_x, 0, sizeof(abs_setup_x));
    memset(&abs_setup_y, 0, sizeof(abs_setup_y));
    abs_setup_x.code = ABS_MT_POSITION_X;
    abs_setup_x.absinfo.minimum = 0;
    abs_setup_x.absinfo.maximum = 1024;
    abs_setup_y.code = ABS_MT_POSITION_Y;
    abs_setup_y.absinfo.minimum = 0;
    abs_setup_y.absinfo.maximum = 768;
    ret = ioctl(fd_touch, UI_ABS_SETUP, &abs_setup_x);
    ret = ioctl(fd_touch, UI_ABS_SETUP, &abs_setup_y);

memset(&usetup, 0, sizeof(usetup));
    usetup.id.bustype = BUS_USB;
    usetup.id.vendor = 0x4711;
    usetup.id.product = 0x0817;
    strcpy(usetup.name, "virtual touch device");
    ret = ioctl(fd_touch, UI_DEV_SETUP, &usetup);
    ret = ioctl(fd_touch, UI_DEV_CREATE);

터치(클릭) 처리

switch(buttonMask)
{
  default:
      printf("buttonMask[%02X]\n",buttonMask);
  break;

  case BUTTON_RELEASE:
      switch(prev_click)
  {
  case BUTTON_L_DOWN:
  printf("BUTTON_L_DOWN BUTTON_RELEASE\n");
  prev_click = -1;
  emit(fd_touch, EV_ABS, ABS_MT_TRACKING_ID, -1);
  emit(fd_touch, EV_SYN, SYN_REPORT, 0);
  break;
  }
  break;

  case BUTTON_L_DOWN:
  if(prev_click == -1)
  {
  printf("BUTTON_L_DOWN\n");
  prev_click = buttonMask;
  emit(fd_touch, EV_ABS, ABS_MT_SLOT, 0);
  emit(fd_touch, EV_ABS, ABS_MT_TRACKING_ID, track_id++);
  emit(fd_touch, EV_ABS, ABS_MT_POSITION_X, pos_x);
  emit(fd_touch, EV_ABS, ABS_MT_POSITION_Y, pos_y);
  emit(fd_touch, EV_ABS, ABS_X, pos_x);
  emit(fd_touch, EV_ABS, ABS_Y, pos_y);
  emit(fd_touch, EV_SYN, SYN_REPORT, 0);
  }
  else
  {
  printf("BUTTON_L_DOWN MOVE\n");
  emit(fd_touch, EV_ABS, ABS_MT_SLOT, 0);
  emit(fd_touch, EV_ABS, ABS_MT_POSITION_X, pos_x);
  emit(fd_touch, EV_ABS, ABS_MT_POSITION_Y, pos_y);
  emit(fd_touch, EV_ABS, ABS_X, pos_x);
  emit(fd_touch, EV_ABS, ABS_Y, pos_y);
  emit(fd_touch, EV_SYN, SYN_REPORT, 0);
  }
  break;
}

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Posted by 구차니

touchscreen 장치 프로토콜 분석

대충 봐선(?)

protocol A에 ABS_X, ABS_Y를 추가한 변종(?) 같긴한데

아래는 한번 터치해서 클릭하는 내용

BTN_TOUCH로 눌렸다 떼었다 라는 걸 보내주는데

깔끔(?) 하게 원격으로 좌표 + 떼어라 만 보내도 되는지 테스트 해봐야 할 듯 (눌렀다 없이 떼었다가 될지 모르겠음)

그 와중에 ABS_MT_TRACKING_ID는 왜 음수 값이 나오지?

세번의 터치가 있었는데(터치 1회, 드래그, 줌 인)

그 때 마다 ABS_MT_TRACKING_ID가 증가하고 매번 -1 로 BTN_TOUCH 0 을 누르기 전에 트래킹이

사용되지 않는다는걸 알려주는건가..?

마지막의 Tracking_id 2,3은 두 손가락으로 줌 인 한 거라, 각각의 손가락에 대해서 처리하는 듯

A non-negative tracking id is interpreted as a contact, and the value -1 denotes an unused slot

[링크 : https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt]

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Posted by 구차니

uinput 으로 touchscreen을 만들기

아래와 같이 설정하면 BTN_LEFT, BTN_RIGHT 때문에, udev에서 Mouse Touchscreen으로 인식된다.

  int keys[] = {BTN_LEFT, BTN_RIGHT, BTN_TOUCH};

  fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);

  //Custom key events init
  ioctl(fd, UI_SET_EVBIT, EV_KEY);
  for(int i = 0; i < sizeof(keys) / sizeof(int); i++){
      ioctl(fd, UI_SET_KEYBIT, keys[i]);
  }

[01:49:49.721] event5  - virtual touch driver: is tagged by udev as: Mouse Touchscreen
[01:49:49.722] event5  - virtual touch driver: kernel bug: device has min == max on ABS_MT_POSITION_X
[01:49:49.722] event5  - virtual touch driver: was rejected
[01:49:49.722] event5  - using input device '/dev/input/event5'

그래서 BTN_TOUCH만 넣으면 Mouse는 빠지고 Touchscreen만 뜨는데, 도대체 커널 버그 쪽은 어떻게 해결해야 할까?

  int keys[] = {BTN_TOUCH}; // BTN_LEFT, BTN_RIGHT

  fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);

  //Custom key events init
  ioctl(fd, UI_SET_EVBIT, EV_KEY);
  for(int i = 0; i < sizeof(keys) / sizeof(int); i++){
      ioctl(fd, UI_SET_KEYBIT, keys[i]);
  }

[01:50:22.720] event5  - virtual touch driver: is tagged by udev as: Touchscreen
[01:50:22.720] event5  - virtual touch driver: kernel bug: device has min == max on ABS_MT_POSITION_X
[01:50:22.720] event5  - virtual touch driver: was rejected
[01:50:22.720] event5  - not using input device '/dev/input/event5'

+

chatGPT 응답해준 것을 조합하면 아래와 같이 하면

일단 터치 장비로 인식은 되는데.. 커서도 안되고 터치 이동, 클릭을 어떻게 구현해야 하나...

void initializeTouchEvent(int fd) {
    struct uinput_setup usetup;
    int keys[] = {BTN_TOUCH}; // BTN_LEFT, BTN_RIGHT,

    fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
ioctl(fd, UI_SET_EVBIT, EV_KEY);

// 사용할 키 등록(터치니까 BTN_TOUCH 만, BTN_LEFT 나 BTN_RIGHT가 등록되면 마우스로 인식됨)
    for(int i = 0; i < sizeof(keys) / sizeof(int); i++){
       ioctl(fd, UI_SET_KEYBIT, keys[i]);
    }

ioctl(fd, UI_SET_EVBIT, EV_ABS);
    ioctl(fd, UI_SET_ABSBIT, ABS_MT_SLOT);
    ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_X);
    ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_Y);
    ioctl(fd, UI_SET_ABSBIT, ABS_MT_TRACKING_ID);  // 요건 없어도 되는 듯
    ioctl(fd, UI_SET_EVBIT, EV_SYN);

struct uinput_abs_setup abs_setup_x;
    struct uinput_abs_setup abs_setup_y;
    memset(&abs_setup_x, 0, sizeof(abs_setup_x));
    memset(&abs_setup_y, 0, sizeof(abs_setup_y));
    abs_setup_x.code = ABS_MT_POSITION_X;
    abs_setup_x.absinfo.minimum = 0; // 최솟값
    abs_setup_x.absinfo.maximum = 1024; // 최댓값
    abs_setup_y.code = ABS_MT_POSITION_Y;
    abs_setup_y.absinfo.minimum = 0; // 최솟값
    abs_setup_y.absinfo.maximum = 1024; // 최댓값

ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_X);
    ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_Y);
    ioctl(fd, UI_ABS_SETUP, &abs_setup_x);
    ioctl(fd, UI_ABS_SETUP, &abs_setup_y);

    // 가상 디바이스를 생성
    memset(&usetup, 0, sizeof(usetup));
    usetup.id.bustype = BUS_USB;
    usetup.id.vendor = 0x1;
    usetup.id.product = 0x1;
    strcpy(usetup.name, "Virtual Touch Device");

    ioctl(fd, UI_DEV_SETUP, &usetup);
    ioctl(fd, UI_DEV_CREATE);
}

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uinput을 이용한 절대좌표 입력 기기 만들기

uinput 에서 절대값을 받기 위해서는 마우스가 아니라 터치로 인식을 시켜야 한다.

가장 도움을 받았던 문서가 오히려 함정 카드(?)였는데

1.7.4.2의 내용은 상대좌표를 이용하는 일반적인 마우스의 예라서

[링크 : https://www.kernel.org/doc/html/v4.12/input/uinput.html]

struct uinput_setup 구조체를 이용하고 있지만

struct uinput_setup {
struct input_id id;
char name[UINPUT_MAX_NAME_SIZE];
__u32 ff_effects_max;
};

[링크 : https://github.com/torvalds/linux/blob/master/include/uapi/linux/uinput.h]

터치패드의 경우(혹은 터치 스크린) 아래의 구조체 중 absmax, absmin 에 시작, 끝 좌표를 넣어 주어야 한다.

ABS_CNT(64)가 왜 상당히 크게 잡혀있는지 모르겠지만

absmax[0] = WIDTH, absmax[1] = HEIGHT를 넣고 초기화 해주면 된다.

struct uinput_user_dev {
char name[UINPUT_MAX_NAME_SIZE];
struct input_id id;
__u32 ff_effects_max;
__s32 absmax[ABS_CNT];
__s32 absmin[ABS_CNT];
__s32 absfuzz[ABS_CNT];
__s32 absflat[ABS_CNT];
};

[링크 : https://elixir.bootlin.com/linux/v4.6/source/include/uapi/linux/uinput.h#L222]

VID와 PID 혹은 문자열이 영향을 주는진 모르겠다.

[링크 : https://github.com/bendahl/uinput/blob/master/touchpad.go#L172]

UI_DEV_SETUP을 ioctl을 이용하여 setup 하는게 아니라

/dev/uinput fd에 write() 함수로 써버리는 것이 EV_REL과의 차이라고 해야하나..?

void init_uinput_touchscreen()
{
    int ret = 0;
    struct uinput_user_dev usetup;
    int keys[] = {BTN_LEFT, BTN_RIGHT, BTN_TOUCH};

int fd_touch = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
    printf("fd[%d]\n", fd_touch);

    //Custom key events init
    ioctl(fd_touch, UI_SET_EVBIT, EV_KEY);
    for(int i = 0; i < sizeof(keys) / sizeof(int); i++){
        ioctl(fd_touch, UI_SET_KEYBIT, keys[i]);
    }

    //Mouse Pointer events init
ret = ioctl(fd_touch, UI_SET_EVBIT, EV_ABS);
    printf("EV_ABS ret[%d]\n",ret);
    ret = ioctl(fd_touch, UI_SET_ABSBIT, ABS_X);
    printf("ABS_X ret[%d]\n",ret);
    ret = ioctl(fd_touch, UI_SET_ABSBIT, ABS_Y);
    printf("ABS_Y ret[%d]\n",ret);

    memset(&usetup, 0, sizeof(usetup));
    usetup.id.bustype = BUS_USB;
    usetup.id.vendor = 0x4711;
    usetup.id.product = 0x0817;
    strcpy(usetup.name, "TouchPad");
    usetup.absmax[0] = 1024;
    usetup.absmax[1] = 768;

    // ret = ioctl(fd_touch, UI_DEV_SETUP, &usetup);
    ret = write(fd_touch, &usetup, sizeof(struct uinput_user_dev));
    printf("UI_DEV_SETUP ret[%d]\n",ret);
    printf("sizeof %d\n",sizeof(struct uinput_user_dev));
    ret = ioctl(fd_touch, UI_DEV_CREATE);
    printf("UI_DEV_CREATE ret[%d]\n",ret);
}

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struct uinput_setup 와 struct uinput_user_dev

왼쪽은 golang의 touchscreen uinput 기능을 이용한 것, 오른쪽은 uinput 예제에서 설정한 것인데

UI_DEV_SETUP 대신 write로 쓰는게 좀.. 특이하다.

그리고 write로 장치 이름을 쓰고 1116 바이트가 써졌다라..

ioctl(3, UI_SET_EVBIT, 0x1)             = 0
ioctl(3, UI_SET_KEYBIT, 0x110)          = 0
ioctl(3, UI_SET_KEYBIT, 0x111)          = 0
ioctl(3, UI_SET_KEYBIT, 0x14a)          = 0

ioctl(3, UI_SET_EVBIT, 0x3)             = 0
ioctl(3, UI_SET_ABSBIT, 0)              = 0
ioctl(3, UI_SET_ABSBIT, 0x1)            = 0

write(3, "testpad\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1116) = 1116
ioctl(3, UI_DEV_CREATE, 0)              = 0

ioctl(3, UI_SET_EVBIT, 0x1)             = 0
ioctl(3, UI_SET_KEYBIT, 0x110)          = 0
ioctl(3, UI_SET_KEYBIT, 0x111)          = 0
ioctl(3, UI_SET_KEYBIT, 0x14a)          = 0

ioctl(3, UI_SET_EVBIT, 0x3)             = 0
ioctl(3, UI_SET_ABSBIT, 0)              = 0
ioctl(3, UI_SET_ABSBIT, 0x1)            = 0

ioctl(3, UI_DEV_SETUP, 0x7ffc48a87ef0)  = 0
ioctl(3, UI_DEV_CREATE, 0)              = 0

struct uinput_user_dev   uinp;

            // create input device in input subsystem
            retcode = write(ufile, &uinp, sizeof(uinp));
            printf("First write returned %d.\n", retcode);

First write returned 1116.

[링크 : https://hybridego.net/1823]

sturct uinput_setup 은 92 바이트 길이

#define UINPUT_MAX_NAME_SIZE 80
struct uinput_setup {
struct input_id id;
char name[UINPUT_MAX_NAME_SIZE];
__u32 ff_effects_max;
};

[링크 : https://elixir.bootlin.com/linux/v4.7/source/include/uapi/linux/uinput.h#L66]

struct uinput_user_dev도 그리 길어 보이진 않는데..

#define UINPUT_MAX_NAME_SIZE 80
struct uinput_user_dev {
char name[UINPUT_MAX_NAME_SIZE];
struct input_id id;
__u32 ff_effects_max;
__s32 absmax[ABS_CNT];
__s32 absmin[ABS_CNT];
__s32 absfuzz[ABS_CNT];
__s32 absflat[ABS_CNT];
};

[링크 : https://elixir.bootlin.com/linux/v4.0/source/include/uapi/linux/uinput.h#L148]

64개까지 등록 가능하도록 되어있는건가?

#define ABS_MAX 0x3f
#define ABS_CNT (ABS_MAX+1)

[링크 : https://github.com/spotify/linux/blob/master/include/linux/input.h]

+

uinput old interface 로 분류된 구조체인듯..

Programs supportinf older versions of uinput interface need to fill a uinput_user_dev structure and write it to the uinput file descriptor to configure the new uinput device

[링크 : https://www.kernel.org/doc/html/v4.12/input/uinput.html]

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uinput 터치 스크린 예제

golang의 예제로는 원하는대로 절대 좌표 이동이 되는데..

C로 하는건 영 안되네 ㅠㅠ 무슨 차이냐!!!

[링크 : https://pkg.go.dev/github.com/bendahl/uinput#section-readme]

[링크 : https://github.com/torvalds/linux/blob/master/include/uapi/linux/uinput.h]

[링크 : https://github.com/bendahl/uinput/blob/master/touchpad.go]

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evbug - 키보드/마우스 입력 디버깅 하기

uinput에 대한 이벤트 로그를 dmesg를 통해 볼 수 있게 해주는 디버그용 모듈

$ sudo modprobe evbug

[링크 : https://www.linuxquestions.org/questions/debian-26/how-to-disable-the-evbug-module-478529/]

[링크 : https://copyprogramming.com/howto/simulating-absolute-mouse-movements-in-linux-using-uinput] << 링크 깨짐

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uinput 장치 확인

/sys/devices 하위의 장치가 /sys/class/input 에 심볼릭 링크로 걸리는데

uinput을 통한 가상 장치는 /sys/devices/virtual/input에 잡힌다.

$ ls /sys/class/input/
$ ls /sys/devices/virtual/input/

[링크 : https://stackoverflow.com/questions/15623442/]

가상으로 잡힌 장치를 보는데 이게 키보드냐.. 마우스냐.

abs, rel도 값을 보는법을 찾아야 할 듯..

(abs 모드로 초기화 하면 capabilities/abs가 3으로 capabilities/rel 이 0으로 뜬다.)

# cat /sys/class/input/input33/uevent
PRODUCT=3/1234/5678/0
NAME="melih-hid"
PROP=0
EV=7
KEY=30000 7ffffffff ffffffffffffffff ffffffffffffffff fffffffffffffffe
REL=3
MODALIAS=input:b0003v1234p5678e0000-e0,1,2,k71,72,73,74,75,76,77,78,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8B,8C,8D,8E,8F,90,91,92,93,94,95,96,97,98,99,9A,9B,9C,9D,9E,9F,A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,C3,C4,C5,C6,C7,C8,C9,CA,CB,CC,CD,CE,CF,D0,D1,D2,D3,D4,D5,D6,D7,D8,D9,DA,DB,DC,DD,DE,DF,E0,E1,E2,110,111,r0,1,amlsfw

/sys/class/input/input33/capabilities# cat abs
0
/sys/class/input/input33/capabilities# cat rel
3
/sys/class/input/input33/capabilities# cat key
30000 7ffffffff ffffffffffffffff ffffffffffffffff fffffffffffffffe

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uinput absolute mouse

[링크 : https://www.kernel.org/doc/Documentation/input/event-codes.txt]

[링크 : https://stackoverflow.com/questions/5190921/simulating-absolute-mouse-movements-in-linux-using-uinput]

+

2022.02.25

// uinput.h
#define UI_SET_EVBIT _IOW(UINPUT_IOCTL_BASE, 100, int)
#define UI_SET_KEYBIT _IOW(UINPUT_IOCTL_BASE, 101, int)
#define UI_SET_RELBIT _IOW(UINPUT_IOCTL_BASE, 102, int)
#define UI_SET_ABSBIT _IOW(UINPUT_IOCTL_BASE, 103, int)

#define UI_DEV_CREATE _IO(UINPUT_IOCTL_BASE, 1)
#define UI_DEV_DESTROY _IO(UINPUT_IOCTL_BASE, 2)
#define UI_DEV_SETUP _IOW(UINPUT_IOCTL_BASE, 3, struct uinput_setup)

// input-event-codes.h
#define EV_KEY 0x01
#define EV_REL 0x02
#define EV_ABS 0x03

#define REL_X 0x00
#define REL_Y 0x01

#define ABS_X 0x00
#define ABS_Y 0x01

[링크 : https://github.com/aosp-mirror/platform_bionic/blob/master/libc/kernel/uapi/linux/input-event-codes.h]

[링크 : https://github.com/torvalds/linux/blob/master/include/uapi/linux/uinput.h]

[링크 : https://github.com/nmelihsensoy/virtual-hid-tcp/blob/master/server/src/server.c]

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'프로그램 사용/uinput'에 해당되는 글 12건

evemu-describe, udevadm

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struct uinput_setup 와 struct uinput_user_dev

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