Como ligar o arduino como um dispositivo de bloco de correção - / dev / ttyACM0?

Question

Eu quero vincular meu Arduino Mega como / dev / ttyACM0. Às vezes, é / dev / ttyACM0 e, às vezes, / dev / ttyACM1.

Eu recebi ajuda desta pergunta e este tutorial

Alguém por favor me ajude a conseguir isso, pois há apenas 2 entradas em /etc/udev/rules.d: -

1. 20-crystalhd.rules
2. 98 kexec.rules

A saída de udevadm info -a -p $(udevadm info -q path -n /dev/ttyACM0) : -

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/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/tty/ttyACM0':
KERNEL=="ttyACM0"
SUBSYSTEM=="tty"
DRIVER==""

looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0':
KERNELS=="2-1.5:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="cdc_acm"
ATTRS{bInterfaceClass}=="02"
ATTRS{bmCapabilities}=="6"
ATTRS{bInterfaceSubClass}=="02"
ATTRS{bInterfaceProtocol}=="01"
ATTRS{bNumEndpoints}=="01"
ATTRS{supports_autosuspend}=="1"
ATTRS{bAlternateSetting}==" 0"
ATTRS{bInterfaceNumber}=="00"

looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5':
KERNELS=="2-1.5"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="1.5"
ATTRS{idVendor}=="2341"
ATTRS{speed}=="12"
ATTRS{bNumInterfaces}==" 2"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="8"
ATTRS{busnum}=="2"
ATTRS{devnum}=="4"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="100mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="c0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="0"
ATTRS{bcdDevice}=="0001"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="55431313937351C05151"
ATTRS{version}==" 1.10"
ATTRS{urbnum}=="17"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Arduino (www.arduino.cc)"
ATTRS{removable}=="removable"
ATTRS{idProduct}=="0042"
ATTRS{bDeviceClass}=="02"

looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1':
KERNELS=="2-1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="01"
ATTRS{devpath}=="1"
ATTRS{idVendor}=="8087"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="2"
ATTRS{devnum}=="2"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="0mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="6"
ATTRS{bcdDevice}=="0000"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="70"
ATTRS{ltm_capable}=="no"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="0024"
ATTRS{bDeviceClass}=="09"

looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2':
KERNELS=="usb2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="0"
ATTRS{idVendor}=="1d6b"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{authorized_default}=="1"
ATTRS{busnum}=="2"
ATTRS{devnum}=="1"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="0mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="2"
ATTRS{bcdDevice}=="0310"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="0000:00:1d.0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="42"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 3.10.0-123.13.2.el7.x86_64 ehci_hcd"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="0002"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="EHCI Host Controller"

looking at parent device '/devices/pci0000:00/0000:00:1d.0':
KERNELS=="0000:00:1d.0"
SUBSYSTEMS=="pci"
DRIVERS=="ehci-pci"
ATTRS{irq}=="23"
ATTRS{subsystem_vendor}=="0x104d"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x0c0320"
ATTRS{companion}==""
ATTRS{enabled}=="1"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="000f"
ATTRS{device}=="0x1c26"
ATTRS{uframe_periodic_max}=="100"
ATTRS{msi_bus}==""
ATTRS{local_cpulist}=="0-3"
ATTRS{vendor}=="0x8086"
ATTRS{subsystem_device}=="0x9081"
ATTRS{numa_node}=="-1"
ATTRS{d3cold_allowed}=="1"

looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""

Onde devo editar minhas entradas em quais arquivos e como. Por favor, explique com alguma profundidade, já que sou muito ingênuo! Por favor me ajude a estabelecer isso. Já está tirando minha mente e meu humor.

    

Answer 1

Eu não estou na frente de um sistema Linux agora, mas gostaria de começar a rastrear o que escreve /etc/udev/rules.d/70-persistent-net.rules e usar isso como um modelo.

Especificamente, toda vez que um dispositivo wifi é conectado, o nome da interface, como wlan0 , wlan1 , etc., é corrigido com base em algum atributo de dispositivo (presumo endereço MAC).

Você pode seguir a mesma convenção para criar suas próprias regras do udev para o dispositivo Arduino.

Espero que isso ajude e boa sorte!