Storage: File already written with different data

Posted on Wed 18th, March 2020

• #1

user109783
I run a example in STM32F4DISCOVERY board.
It's about Storage.
I copy codes into right-side IDE like this:
```
var s = require("Storage");
s.write("hwll","ddd");
```
then I send and save into board.
But it make error like this

Uncaught Error: File already written with different data
at line 1 col 21
s.write("hwll","ddd");

What's wrong with it?
• #2

Gordon

What you're doing looks fine. What firmware are you using? I know that problem was present on older firmwares.
• #3

user109783 in reply to @Gordon

I cloned the project from github, and build myself, version is 2v04. I deleted some modules which I don't want in the build file. But Storage module still there.
• #4

AkosLukacs

If you had previous firmware, the storage module changed to allow longer file names. Completely erasing flash, or issuing a require("Storage").eraseAll() should fix the issue.
• #5

user109783 in reply to @AkosLukacs

You are right, Thank you again!

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