Needs a refactor.

[caternuson]

Everything is currently in a single file, which is causing some memory issues:
adafruit/Adafruit_CircuitPython_CharLCD#36

Suggest this gets broken out into several files in a subfolder:

• adafruit_mcp230xx
  • mcp230xx.py - base class
  • mcp23008.py - MCP23008 class
  • mcp23017.py - MCP23017 class
  • digital_inout.py - the DigitalInOut shim class

NOTE: This will break existing code
. Usage will have to change from this:

import adafruit_mcp230xx
mcp = adafruit_mcp230xx.MCP23008(i2c)

to something like this:

from adafruit_mcp230xx.mcp23008 import MCP23008
mcp = MCP23008(i2c)

[ladyada]

kk!

[caternuson]

@dherrada oops, sry, i had already chipped away at this. just PR'd

[evaherrada]

@caternuson That’s fine. I’ll do some testing of it once it gets merged.

[caternuson]

Do you have some bare MCP ICs? That'd be great. I'm only testing with an LCD backpack.

[evaherrada]

I don't have the bare ones, but I do have the GPIO expander and the LCD backpack.

[caternuson]

OK. All green with Sir Travis. Test away #11

Note that the CharLCD library will not work with this refactor until it also gets updated. Very minor tweaks to the imports and MCP setup.

[evaherrada]

@caternuson Everything got kind of crazy the last week, but I've just been able to test it, and from what I can tell, it works.