How to write a String variable in file.txt in SD card of nextion intelligent series

[noufelbeghlal]

Hi all;

I spend a long time to find a solution to write a string variable in file.txt in an sd card with the function FileStream but I couldn’t, I tried with this example,fs0.open(“sd0/file.txt”) fs0.write(“textexample”,0,11) fs0.close(),
I got no error but this code doesn’t work, please someone can help me.

thanks.

[judy95079]

I am looking for related information.

I have seen this reply.

Write in txt file on sd card intelligent nextion

Place a file component on the page and use its open and write methods. Understand that the Nextion has no full fledged file system, it can neither create files nor change a file size (append) - you have to create the file and to allocate its size before you put the SD card into the Nextion. Then, you can write until the previously allocated file size is full.

Your code will work if your text file already has a size of at least 11bytes (eg 11 spaces). Hope this will help you.

But in fact, I don’t know of any more helpful way than adding 11 space keys.

That’s exactly what I’m looking for.

[noufelbeghlal]

it’s solved ,thank you very much for your help

[judy95079]

Did you use any other method to make the text file size bigger? I’d really like to know. thanks.

（很高興能在這裡也遇到中文使用者。）

[noufelbeghlal]

I did exactly what you said, I created a file and I write 11 spaces and i tread to write with a variable that has 5 characters (if the variable is bigger than 11 you got a china language) so it works.