Navio2 Python - pwm cleanup problem

[drobban]

Hello.
Tested the Servo.py example and possibly found a problem.
emlidtool info:

Vendor: Emlid Limited
Product: Navio 2
Issue: Emlid 2017-09-22 94b6586ea415c117b57d0d9eed9fc2df0bf1bcfd
Kernel: 4.9.45-94f47ec-emlid-v7+

Tested scenario:
setting PWM_OUTPUT to 0
there is OUTPUT on PIN 1.
Just as expected.

Then setting PWM_OUTPUT to 1
there is OUTPUT on PIN 1 & PIN 2.
Did not expect that to happen.

I have tested a couple of scenarios and the pattern is, all previous used OUTPUTS will get activated.
OUTPUTS that has not yet been used is not outputting any signal.

I suspect a cleanup problem, so I extended the example to do something like this:

import sys
import time
import navio2 as navio
import navio2.pwm
import navio2.util

navio.util.check_apm()

PWM_OUTPUT = 2
SERVO_MIN = 1.250 #ms
SERVO_MAX = 1.750 #ms

#cleanup before work
for x in range(4):
    with navio.pwm.PWM(x) as pwm:
        pwm.set_period(1)

with navio.pwm.PWM(PWM_OUTPUT) as pwm2:
    pwm2.set_period(400)
    pwm2.enable()

    for _ in range(20):
        pwm2.set_duty_cycle(SERVO_MIN)
        time.sleep(1)
        pwm2.set_duty_cycle(SERVO_MAX)
        time.sleep(1)

This seems to set the first 4 pins into a disabled state. Leaving all other pins in a low state while working with the selected PWM_OUTPUT.

Not sure if my observations are correct or where the actual problem is located.
If my observations are correct, I would suggest some cleanup routines in method deinitialize() in navio2/pwm.py