readJSON/writeJSON/erase make the file broken

[vidalouiswang]

I saved some json objects with writeJSON function, then when I try to read it, error occurred in the readJSON. It shows me Uncaught Error: Got [ERASED], expected ','. I try to read this file with read function and I found the file was broken, the content like this: {"name":"test", "type":"dw"???????????????????????????????????????????????????????????????????

And the require("Storage").list() shows a broken file list:

fs.list() =[ "server", "wifiInfo", "users", "spname", ".boot0", ... "&ad\t,id)a", <==here "de.@`hta!", <==here "funInitia", "action", "tasks" ]

The function readJSON/writeJSON/erase may lead to the problem cause I only used these three functions when the problem happened.

Espruino version: 2.06 running on NodeMCU.

[MaBecker]

Honestly, erase_flash, flash and then try again.

[vidalouiswang]

Honestly, erase_flash, flash and then try again.

I tried. But same problem.

[MaBecker]

Ok, do you like to share some details like board, firmware version and source to reproduce this. This would definitely help to fix this ;-)

[vidalouiswang]

Ok, do you like to share some details like board, firmware version and source to reproduce this. This would definitely help to fix this ;-)

Espruino version: 2.06 running on NodeMCU. The function readJSON/writeJSON/erase may lead to the problem cause I only used these three functions when the problem happened.

[MaBecker]

please share sample code to reproduce this issue

[vidalouiswang]

please share sample code to reproduce this issue

OK. Here is the code: let arr = fs.readJSON("action"); /*a: [{ "name": "\\u5f00\\u5173", "type": "dw", "pin": "NodeMCU.D0", "state": "a", "id": "2576b617001feda733d2b1b8b10c002b1a49f6a3", "subState": false },{ ... }] */ let ac = null; for (let i of arr) { if (i.id == "xxx") { ac = i; } } if (ac) { ac.subState = true; } fs.writeJSON("action", arr);

[vidalouiswang]

please share sample code to reproduce this issue

And I did another test. Change subState every second and write to flash using writeJSON. Here is the result from Serial:

[MaBecker]

I see no way to help you with this, the sample is producing no errors.

[vidalouiswang]

I see no way to help you with this, the sample is producing no errors.

Ok. It is a random error, You can try to use writeJSON frequently, like every second or 100 milliseconds. Now I have to make a backup every time readJSON and writeJSON. Anyway, thank you.

[MaBecker]

Make sure you are not writing to storage during upload, put you code in a onInit(){} function and use a setTimeout(onInit,1E3); to start your code.

[vidalouiswang]

Make sure you are not writing to storage during upload, put you code in a onInit(){} function and use a setTimeout(onInit,1E3); to start your code.

Your method is same as mine. I am using this method to start my code month ago.

[MaBecker]

Has issue #1912 cover this issue too?

[gfwilliams]

I think unlikely as this isn't causing a reboot?