adafruit_ssd1306.py no module named 'framebuf'

[jedgarpark]

Ran into this error running the Feather Waveform Generator code on Feather M4 running 4.0.0 Alpha 2 of Circuit Python:
File "adafruit_ssd1306.py", line 35, in <module> ImportError: no module named 'framebuf'

This error is not present with Alpha 1.

[jerryneedell]

see #1285

[ladyada]

@dastels wanna update the guide to indicate you need to use 3.X?

[jerryneedell]

FYI - the current guide says 3.x does not work and 4.0 must be used!

[CedarGroveStudios]

It seems that frambuf support is missing from adafruit-circuitpython-feather_m0_basic-en_US-4.0.0-alpha.1.uf2 Was that intentional?

Adafruit CircuitPython 4.0.0-alpha.1 on 2018-09-21; Adafruit Feather M0 Basic with samd21g18
>>> import adafruit_ssd1306.py
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "adafruit_ssd1306.py", line 35, in <module>
ImportError: no module named 'framebuf'
>>>

[tannewt]

@CedarGroveStudios Yes its intentional. Will be replacing it with displayio.

[CedarGroveStudios]

Thanks. Was able to get it working with alpha 1 on an M4 for now.

[CedarGroveStudios]

Sorry for one more observation and question regarding framebuf support in CPy 3.0.3. Support for framebuf is there for Express boards, but not the non-express Feather M0 and Trinket M0. Is that due to a limitation in the code for basic M0s? (I tested the M0 Adalogger, M0 Basic, and Trinket M0 boards.)

[jerryneedell]

If you look at the "if" block here https://github.com/adafruit/circuitpython/blob/master/ports/atmel-samd/mpconfigport.h#L231 you can see what is different for the boards with less than 192000 bytes of flash (the non-express and basics). Since the files system has to also be in the Flash there is less room for code so some stuff is left out.

sorry - that was for the current master build - this is for 3.X
https://github.com/adafruit/circuitpython/blob/3.x/ports/atmel-samd/mpconfigport.h#L194

[CedarGroveStudios]

Ah. There it is. Thanks for the clarification.
Was attempting to retire/reuse/recycle my existing stock of basic M0 boards into static projects so that I can concentrate on using Express boards only. I'll just place them in projects where framebuf isn't required.

[tannewt]

I'm going to close this. We have a number of issues for displayio already open here: https://github.com/adafruit/circuitpython/issues?q=is%3Aopen+is%3Aissue+label%3Adisplayio