GPIO

GPIO

Device Compatibility

Overview

The following sections below will go over how to utilize the GPIO on your MATRIX Device. These functions affect pins: 0-15.

Import Statement

from matrix_lite import gpio

gpio

.setFunction()
# Valid ways of setting a pin as a digital pin
gpio.setFunction(0, 'DIGITAL')
gpio.setFunction(0, 0)

# Valid ways of setting a pin as a PWM pin
gpio.setFunction(0, 'PWM')
gpio.setFunction(0, 1)
.setMode()
# Valid ways of setting a pin to receive input
gpio.setMode(0, "input")
gpio.setMode(0, 0)

# Valid ways of setting a pin to allow output
gpio.setMode(0, "output")
gpio.setMode(0, 1)
.getDigital()
# Returns a 1 or 0 representing the ON/OFF state of a pin
gpio.getDigital(0)
.setDigital()
# Controls the digital output of a pin

# Valid ways of setting a pin to OFF
gpio.setDigital(0,"OFF")
gpio.setDigital(0,0)

# Valid ways of setting a pin to ON
gpio.setDigital(0,"ON")
gpio.setDigital(0,1)
.setPWM()
# Controls the PWM output of a pin
gpio.setPWM({
    "pin": 0,
    "percentage": 25,
    "frequency": 50,
})
.setServoAngle()
# This function requires the pin to be set to "PWM" mode.
gpio.setServoAngle({
    "pin": 0,
    "angle": 90,
    # min_pulse_ms (minimum pulse width for a PWM wave in milliseconds)
    "min_pulse_ms": 0.8,
})
GPIO examples
from matrix_lite import gpio

# Configure pin 0
gpio.setFunction(0, 'DIGITAL')
gpio.setMode(0, 'input')

# Read pin 0
print(gpio.getDigital(0))

from matrix_lite import gpio

# Set pin 1 to be ON
gpio.setFunction(1, 'DIGITAL')
gpio.setMode(1, 'output')
gpio.setDigital(1, 'ON')

# Set pin 10 to be OFF
gpio.setFunction(10, 'DIGITAL')
gpio.setMode(10, 'output')
gpio.setDigital(10, 'OFF')

from matrix_lite import gpio

# Set pin 2 to be output a PWM signal
gpio.setFunction(2, 'PWM')
gpio.setMode(2, 'output')
gpio.setPWM({
    "pin": 2,
    "percentage": 25,
    "frequency": 50, # min 36
})

from matrix_lite import gpio

# Tell pin 3 to set servo to 90 degrees
gpio.setFunction(3, 'PWM')
gpio.setMode(3, 'output')
gpio.setServoAngle({
    "pin": 3,
    "angle": 90,
    # min_pulse_ms (minimum pulse width for a PWM wave in milliseconds)
    "min_pulse_ms": 0.8,
})

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