COMEX-IE38M: Linux: Mint

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Revision as of 14:15, 27 November 2016 by Denis (talk) (Display Interfaces)
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  • COMEX-IE38M supports Linux Mint 18 LTS with full-featured desktop environment
  • All necessary drivers and tools are already installed
  • Networking, sound, video acceleration, 2D and 3D graphics and other features work out of the box

Display Interfaces

  • By default HDMI output is enabled and eDP output disabled in the Linux package
  • To enable eDP output need to remove "video=eDP-1:d" kernel boot option from /boot/grub/grub.cfg and /etc/default/grub

GPIO Signals Details

GPIO name Direction Pin # Default Function PU/PD/Plane
444 In A54 SD_DATA0 PU 20k (S0)
445 In A63 SD_DATA1 PU 20k (S0)
446 In A67 SD_DATA2 PU 20k (S0)
447 In A85 SD_DATA3 PU 20k (S0)
443 Out A93 SD_CLK 20k PD
449 Out B54 SD_CMD PU 20k (S0)
417 Out B57 SD_WP PU 10k (S5)

  • The GPIO sysfs interface allows users to manipulate any GPIO from userspace dynamically.
  • A basic example of GPIO 417 Pin B57 (P19-6 on SB-COMEXmini) usage as root user:
$ echo 417 > /sys/class/gpio/export
$ echo out > /sys/class/gpio/gpio417/direction
$ echo 1 > /sys/class/gpio/gpio417/value
## at this point voltage measuring on B57 (or P19-6) should give 1.3V
$ echo 0 > /sys/class/gpio/gpio417/value
## at this point voltage measuring on B57 (or P19-6) should give 0.0V
$ echo 417 > /sys/class/gpio/unexport

See also