'module' object has no attribute 'mkfs'

[Sn3akyP3t3]

Running into a series of gotchas with Micropython and Pymakr. One more to share. Either I or documentation need to be corrected. Here's the link: https://docs.pycom.io/gettingstarted/programming/first-project/

>>> Running d:\repo\Pycom\main.py

>>>
>>>
Traceback (most recent call last):
  File "<stdin>", line 17, in <module>
AttributeError: 'module' object has no attribute 'mkfs'
>
Pycom MicroPython 1.20.0.rc13 [v1.9.4-94bb382] on 2019-08-22; GPy with ESP32
Type "help()" for more information.

This is the failing code:

import os
os.mkfs('/flash')

[andreas]

@kjm I don't believe so. It will just reformat the user space filesystem mounted at /flash. This is completely different from more lower level operations like erase_all.

[kjm]

@andreas does os.fsformat('/flash') do a full flash erase equivalent to pycom-fwtool-cli.exe -p COMxx erase_all ?

[andreas]

Nowadays, we also have os.fsformat('/flash'), see also https://forum.pycom.io/topic/5375/using-pycom-fwtool-cli/6.

[crumble]

@nathanh said in 'module' object has no attribute 'mkfs':

I am bumping this as I just ran into this exact problem with the incorrect documentation, this post just saved me so would be useful to have the documentation updated.

I like way MicroPython handles it, so you can see the matching documentation for your firmware version. Or like Microsoft, show in which versions the methods exists.

[nathanh]

I am bumping this as I just ran into this exact problem with the incorrect documentation, this post just saved me so would be useful to have the documentation updated.

[Sn3akyP3t3]

I think I found the solution buried in a post, https://forum.pycom.io/topic/4099/new-firmware-release-candidate-v1-20-0/81, about a firmware upgrade. Please upgrade the official documentation as I'm sure this is stopping others as well. I'm not sure why this hasn't been reported before!

Note: The function os.mkfs() has been replaced with os.fsformat() To format the internal file system, use os.fsformat('/flash') and os.fsformat('/sd') to format SD cards (card needs to be mounted as '/sd')

To mount the SD card, use this code:

sd = SD()
fs = os.mkfat(sd)
os.mount(fs, '/sd')

[Sn3akyP3t3]

Ran into another similar instance of this issue in another section for firmware upgrading of the LTE modem: https://docs.pycom.io/tutorials/lte/firmware/.

>>> from machine import SD
>>> 
>>> sd = SD()
>>> os.mkfs(sd)            # format SD card
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'mkfs'
>>> os.mount(sd, '/sd')    # mount it
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: [Errno 1] EPERM
>>> os.listdir('/sd')      # list its content
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: [Errno 19] ENODEV