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moxa-it87-serial-driver

Moxa IT87 Serial Driver​

moxa-it87-serial-driver: IT8786 support six standard serial ports and RS485 automatic direction control. This driver provide an interface under misc device for controlling serial register.

Support Models​

moxa-it87-serial-driver

What Tools Depend On?​

Usage (Ubuntu 20.04/Debian 11)​

  • Install required packages
apt update
apt install --no-install-recommends -qqy build-essential
apt install --no-install-recommends -qqy linux-headers-$(uname -r)
  • Build kernel module
    1. Run make to build kernel module
    2. Once build successful, it87_serial.ko could be found under current directory
    3. Run make install to install kernel module on /usr/lib/modules/$(uname -r)/

Usage (CentOS 7.9)​

  • Sync the latest version available from any enabled repository and reboot system
yum distro-sync
reboot
  • Install required packages
yum install "kernel-devel-$(uname -r)"
yum install "kernel-headers-$(uname -r)"
yum groupinstall "Development Tools"
  • Build kernel module
    1. Run make to build kernel module
    2. Once build successful, it87_serial.ko could be found under current directory
    3. Run make install to install kernel module on /usr/lib/modules/$(uname -r)/
note

CentOS 7 latest kernel moved from "kernel.ko" to "kernel.ko.xz", please ensure target "kernel.ko.xz" is removed or moved as a backup.

Example after probing modules​

  • /sys/class/misc/it87_serial/
dev  power  serial1  serial2  subsystem  uevent
  • /sys/class/misc/it87_serial/serial1

For initial version, provide an interface to control RS485 mode control.

serial1_rs485

Last updated on 2023-02-15 by Wilson Huang