Fixed Flicker for Numbers when Autowrite is on

[makermelissa]

Fixed Flicker for Numbers when Autowrite is on

See #29

[makermelissa]

I also tested that this didn't break the work I did for Adafruit_CircuitPython_FeatherWing.

Note: This was only tested on the 14-Segment display as that's all I have at the moment.

[caternuson]

That will cover it for an actual number input:

disp.print(1234)

but not for string:

disp.print("1234")

Take a look at how print() routes to either _text or _number. For a string entry, it goes straight to _text and would bypass the auto_write disable in _number.

How about:

• remove auto_write lines from _put in all classes
• add them to end of __setitem__

[makermelissa]

Yeah, I especially noticed it with the numbers. I'll go ahead and experiment with it some more and write a little test script that can work for strings too. Something along the lines of:

count = 1000
while count < 9000:
    count += 1 
    display.print("{}".format(count))
    time.sleep(0.1)

That should make any flickering pretty evident.

[makermelissa]

I did as you suggested and it looks good so far. I want to test some more before I call it good.

[caternuson]

Cool. Ping me when you're ready for another look. I've got the other displays and can test them.

[makermelissa]

Yep @caternuson. It's ready for you to take another look.

[caternuson]

Let's good. Tested and working on a 7 segment.

Thanks for the fix.