Another-Python-RPi-GPIO-Lib

A very simple Python tool for using Raspberry Pi GPIO inputs/outputs. This has been created for OpenWRT/LEDE, since these systems can’t compile the code required by other GPIO libraries like the common RPi-GPIO.

Pins are initialized as objects. You can read and write digital values, as well as attach some sort of “interrupts” to the read pins (it’s actually a looped polling over the pin value).

Examples

Write

from GPIO import *
p4 = Pin(4, OUTPUT)
p4.write(HIGH)
p4.write(LOW)
p4.write(True)
p4.write(False)
p4.write(1)
p4.write(0)

Read

from GPIO import *
p4 = Pin(4, INPUT)
if p4.read():
    print("Pin is HIGH")
else:
    print("Pin is LOW")

Interrupt

from GPIO import *
def mydef():
    print("Pin changed!")
p4 = Pin(4, INPUT)
int_falling = p4.attach_interrupt(mydef, FALLING)
int_rising = p4.attach_interrupt(mydef, RISING)
int_both = p4.attach_interrupt(mydef, BOTH)
int_falling.start()
#mydef() will be executed when pin changes HIGH -> LOW
int_falling.stop()
int_rising.start()
#mydef() will be executed when pin changes LOW -> HIGH
int_rising.stop()
int_both.start()
#mydef() will be executed when pin changes any state (HIGH -> LOW or LOW -> HIGH)
int_both.stop()

Interrupt with args

Not implemented yet

from GPIO import *
def mydef(edgetype):
    print("Pin changed with edgetype:", edgetype)
p4 = Pin(4, INPUT)
int_falling = p4.attach_interrupt(mydef, FALLING, ("Falling (high to low)",))
int_rising = p4.attach_interrupt(mydef, RISING, ("Rising (low to high)",))
int_both = p4.attach_interrupt(mydef, BOTH, ("Both (pin changed value)",))
int_falling.start()
#mydef() will be executed when pin changes HIGH -> LOW
int_falling.stop()
int_rising.start()
#mydef() will be executed when pin changes LOW -> HIGH
int_rising.stop()
int_both.start()
#mydef() will be executed when pin changes any state (HIGH -> LOW or LOW -> HIGH)
int_both.stop()