Not working on board only in simulator

[aqmoreira]

Example file no running in board Micro:bit.

https://makecode.microbit.org/_7ia7bCddr0Ay

[davorradic]

I'm too trying to write to serial:
input.onButtonPressed(Button.B, function () { basic.showNumber(1) serial.redirectToUSB() serial.writeLine("dit is een test1") let my_data = "output.txt" files.appendLine( my_data, "lll,lll,dddl,ll099" ) files.readToSerial(my_data) })
I followed tutorial on:
https://www.dendrite.me/media/output/mediaid/5a13f86908d73406ab61317c

and when I say:
serial.writeLine("dit is een test1")
It works great and I see it in tera term "dit is een test1"
but when I try to do it like this:
files.readToSerial(my_data)
nothing is showed :(
In the simulator it works, but on Micro:bit it doesn't show up.

[davorradic]

I just test it with python and writing file is working perfect :)
For my students I really need JavaScript and it would be great to get this done with JavaScript and to avoid python

[davorradic]

I see there are many commits, how could I include the old commits of the file to my makecode on windows? I really want to work with JavaScript and not with python.

[johnhunt]

Can confirm the same here... cannot use the web editor/JS - works in simulator but totally dead on board (no code runs at all). Good to know it's still possible via python though.

[asandven]

Can confirm the same. Feedback from Micro:bit Foundation:
"I'm afraid the filesystem plugin does not work well with the updated MakeCode editor and that is why it is still in Beta. I would suggest you look at MicroPython for support doing this.
https://microbit-micropython.readthedocs.io/en/latest/filesystem.html"

[Cybot101]

It looks like there is an issue with the StringData type being passed into the files.cpp methods.
I've 'hacked' together a working version that simply replaces all the StringData arguments with String, and adjusted where needed, but I haven't yet properly tested and verified it.

[roctopwerk]

@Cybot101 How could I fix it then? So I don't use python, but stay with Javascript?

[Cybot101]

@roctopwerk
My Fork you are welcome to import and try out, but it's not 'official'. It's been working for me so far.
github.com/Cybot101/pxt-filesystem
I haven't had time to clean up for a Pull Request here.

[omarbenhamid]

@Cybot101 fork worked for me on the online makecode editor, offline (w10) did not work at first but worked after having it running through the online one first ... I know there are issues with compilation on w10 ... maybe is it related.

[mhamilt]

Is there currently a setup of Operating System, browser, offline / online editor and firmware version to get this to function on a physical micro:bit? Or is this still strictly "simulator only"?

[mhamilt]

Lacking a better place to add any documentation to get this working. Here are some instructions for adding the fork mentioned by @Cybot101 .

Adding Github Repository to Available Extensions

1. Go to MakeCode
2. Start a project
3. From the setup cog, select Extensions
4. Scroll to the bottom until Want to create your own extension? Log in to GitHub
5. follow process for generating a token
6. paste the url for the fork https://github.com/Cybot101/pxt-filesystem
7. click on result to add

Notes

The intended functionality of having files appear visible when the micro:bit is connected via usb* is not present in the fork. Data can be streamed over Serial and then downloaded as a .csv from there.

* Which is what I assume is the crux of this issue

Tested on:

OS	Browser	micro:bit Firmware Version
macOS Mojave 10.14.6	Chrome	253

Useful Links

• How to Create a MakeCode Package for Micro:Bit