Accessing SD cards

[deshipu]

The sdcard driver included in MicroPython's tree now works both on PyBoard and on the ESP8266. See the example on how to use it. https://github.com/micropython/micropyt ... /sdcard.py

[pythoncoder]

Excellent! That is seriously useful

[ajie_dirgantara]

[quote="deshipu"]So, to answer my own question, yes, it is possible. I just did it.

First, you need to comment out the mounting of the filesystem in the modules/_boot.py

Then you need to import the sdcard code (from https://bitbucket.org/thesheep/micropyt ... /sdcard.py) and run the esp8266_mount function from it.

Then you can use the sd card as your storage.[/quote]

Hi,

where is this modules/_boot.py located?

Thanks,

[platforma]

where is this modules/_boot.py located?

It's located in https://github.com/micropython/micropyt ... 66/modules.
Is it necessary to prevent the filesystem mount at boot with the micropython's sdcard.py driver? You should be able to just use the driver without the need to modify the _boot.py file.

[deshipu]

Yes, it's no longer necessary to edit your _boot.py, you as you can now unmount the filesystem.

[pythoncoder]

Is it in the roadmap to support multiple mounted filesystems as per the Pyboard?

[deshipu]

As far as I know that's the plan eventually, but some considerable cleanup of the related code needs to happen first, see https://github.com/micropython/micropython/pull/2140 for some discussion.

[bitninja]

Hi! Thanks for all the great info. I have been able to use the module to successfully read the SD card from my Wemos D1 Mini SD Card shield.

All I really had to change was to use machine.SPI(1) instead of machine.SPI(0) and then I was able to remount to the SD card.

I had a couple of questions though...

1) How do I change the mount back to the original file system (SPIFFS I guess?). and

2) To what extent does the sdcard.py support Long File Names? I see them is my directory listing, so can I open them and manipulate them as normal?

Thanks!

[deshipu]

You can see how your _boot.py mounts the internal filesystem on startup: https://github.com/micropython/micropyt ... t.py#L4-L8 and do the same thing.

As for your second question, I honestly have no idea.

[bitninja]

[quote="deshipu"]You can see how your _boot.py mounts the internal filesystem on startup.[/quote]

I'm sorry, where would I find _boot.py?

I'm new to Python as well, so it may be something basic I am missing.