GPO

Set GPIO output level

Set the digital output level of GPIO pins.

Syntax

lager gpo [NETNAME] LEVEL [OPTIONS]

Arguments

Argument	Description
NETNAME	GPIO net name (optional if default is set)
LEVEL	Output level (see below)

Level Values

The following values are accepted (case-insensitive):

Value	Result
high, on, 1	Set pin high
low, off, 0	Set pin low
toggle	Invert current state

Options

Option	Description
--box BOX	Lagerbox name or IP address

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Usage

# Set pin high
lager gpo LED1 high --box my-lager-box

# Set pin low
lager gpo LED1 low

# Toggle pin state
lager gpo LED1 toggle

# Using numeric values
lager gpo LED1 1
lager gpo LED1 0

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Supported Hardware

Device	Pins	Voltage
LabJack T7	FIO0-FIO7	3.3V logic

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Examples

# Control an LED
lager gpo LED1 on --box lab-gw
sleep 1
lager gpo LED1 off --box lab-gw

# Toggle reset line
lager gpo RESET_N low
sleep 0.1
lager gpo RESET_N high

# Blink pattern
for i in {1..5}; do
    lager gpo LED1 toggle
    sleep 0.5
done

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Related Commands

• lager gpi - Read GPIO input state

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Notes

• GPO is for setting output pins only
• Use lager gpi to read input pins
• Default net can be set with lager defaults add --gpio-net
• Pin must be configured as output in net configuration
• Toggle reads current state and inverts it