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Odroid

An affordable, power-efficient, high-performance Single Board Computer that supports Android and Linux platforms. more

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1.8 v

All GPIO use 1.8 vdc for signaling Don't connect 3.3VDC or 5VDC

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Demo

Mapping gpio name to gpiod command

from the pinout table we locate ping 13 as GPX1.5 using /sys/kernel/debug/gpio we look for gpx1 pins

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sudo cat /sys/kernel/debug/gpio | grep gpx
#
gpiochip1: GPIOs 8-15, parent: platform/13400000.pinctrl, gpx0:
gpiochip2: GPIOs 16-23, parent: platform/13400000.pinctrl, gpx1:
gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2:
gpiochip4: GPIOs 32-39, parent: platform/13400000.pinctrl, gpx3:
gpioinfo on gpiochip2
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sudo gpioinfo gpiochip2

gpiochip2 - 8 lines:
        line   0:      unnamed       unused   input  active-high 
        line   1:      unnamed       unused   input  active-high 
        line   2:      unnamed       unused   input  active-high 
        line   3:      unnamed       unused   input  active-high 
        line   4:      unnamed       unused   input  active-high 
        line   5:      unnamed       unused   input  active-high 
        line   6:      unnamed       unused   input  active-high 
        line   7:      unnamed       unused   input  active-high

1.8 v

All GPIO use 1.8 vdc for signaling Don't connect 3.3VDC or 5VDC

gpioset
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# toggle line5 to high (1.8v)
sudo gpioset gpiochip2 5=1
# toggle line5 to low
sudo gpioset gpiochip2 5=0
gpioinfo on gpiochip2 after the set command
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sudo gpioinfo gpiochip2
gpiochip2 - 8 lines:
        line   0:      unnamed       unused  output  active-high 
        line   1:      unnamed       unused   input  active-high 
        line   2:      unnamed       unused   input  active-high 
        line   3:      unnamed       unused   input  active-high 
        line   4:      unnamed       unused   input  active-high 
        line   5:      unnamed       unused  output  active-high 
        line   6:      unnamed       unused   input  active-high 
        line   7:      unnamed       unused   input  active-high

Demo: do it again

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sudo cat /sys/kernel/debug/gpio | grep gpx
#
gpiochip1: GPIOs 8-15, parent: platform/13400000.pinctrl, gpx0:
gpiochip2: GPIOs 16-23, parent: platform/13400000.pinctrl, gpx1:
gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2:
gpiochip4: GPIOs 32-39, parent: platform/13400000.pinctrl, gpx3:

from the pinout table we locate ping 19 as GPX2.6

gpioset
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# toggle line5 to high (1.8v)
sudo gpioset gpiochip3 6=1
# toggle line5 to low
sudo gpioset gpiochip3 6=0