thenickdude / asyncfatfs Goto Github PK

I was wondering if it is safe to do multiple fopen() calls on the same file. My use case is to have one process writing to the end of the file while another process reads from earlier sections of the file. Would doing this break anything in afatfs?

Thanks!

Hello there!

First, I'd like to thank you for this amazing library! It's super helpful!

When sdcard_{writeBlock,readBlock} is called and the operation starts, I get the current timestamp. When sdcard_poll is called I check if the operation has finished in order to call the callbacks, but let's suppose it's taking way too long and something has gone wrong in the layers below the file system (sd card driver or something like that).

In that case, is there a way to tell the filesystem that the operation has failed? As far as I've looked throughout the code base, there is no way, because there's no error callback... What would happen if I were to cancel the operation and mark the SDCard as ready again? I'm assuming I'd lose data...

In that scenario, if I assume the operation is taking too long, is my only option restarting it?

Also, I'm not expecting this code path to be executed, but I'm used to check for timeout in all kinds of operations... just to try and be safe.