I have tried the espidf on the 5.4 release branch, still the same issue. the uart vfs data is still incomplete.

Hi,
Just to clarify the rest of the data is lost fully, not just received in the next call to read?

I tried replicating your issue with the following code, but was unable to.

Does your code look something like this?


#include <stdio.h>
#include <inttypes.h>
#include "hal/uart_types.h"
#include ...

Tested this on espidf 5.3.3, does not work either.

I have recently installed 5.4.1 espidf version, previously on 5.3.1. I have noticed that the uart vfs is not working as intended.
The build was successfull, but i noticed that when reading the uart device file, there are missing bytes.


example:
if the message received "hello world\n"
vfs would ...