mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
47 lines
2.0 KiB
Markdown
47 lines
2.0 KiB
Markdown
|
# ESP-IDF Changes
|
||
|
|
|
||
|
|
This document is used to track all changes made to the FreeRTOS-Plus-POSIX V1.0.0 source code used in ESP-IDF.
|
||
|
|
|
||
|
|
## License Headers
|
||
|
|
|
||
|
|
- Added `SPDX-FileCopyrightText` and `SPDX-FileContributor` tags to all files to pass ESP-IDF pre-commit checks.
|
||
|
|
|
||
|
|
## POSIX errno
|
||
|
|
|
||
|
|
Instead of relying on the FreeRTOS `errno` scheme by enabling `configUSE_POSIX_ERRNO`, the `errno` provided by newlib is used. `configUSE_POSIX_ERRNO` should stay disabled.
|
||
|
|
|
||
|
|
## API Changes
|
||
|
|
|
||
|
|
`mq_open()` has been changed to make the arguments `mode` and `attr` optional, as specified by [POSIX](https://pubs.opengroup.org/onlinepubs/9699919799/functions/mq_open.html).
|
||
|
|
|
||
|
|
The following functions are stubs and always return `ENOSYS`:
|
||
|
|
* `mq_notify()`
|
||
|
|
* `mq_setattr()`
|
||
|
|
|
||
|
|
## Header File Organization
|
||
|
|
|
||
|
|
In the original FreeRTOS-Plus-POSIX project, the POSIX header files are provided in the sub directory `FreeRTOS-Plus-POSIX`. In ESP-IDF, however, the POSIX header files do not need any prefix. This increases compatibility with applications originally written for other platforms. All files originating from the FreeRTOS-Plus-POSIX project have been modified to reflect the different include path.
|
||
|
|
|
||
|
|
Wherever possible, ESP-IDF is using header files from newlib instead of the header files from FreeRTOS-Plus-POSIX.
|
||
|
|
|
||
|
|
In some cases, additional includes have been added to files from FreeRTOS-Plus-POSIX to simplify building.
|
||
|
|
|
||
|
|
## Critical Sections
|
||
|
|
|
||
|
|
The critical sections have been changed according to the ESP-IDF critical section API.
|
||
|
|
|
||
|
|
## Definitions
|
||
|
|
|
||
|
|
The following definitions have been added to the private include `utils.h`:
|
||
|
|
```
|
||
|
|
MICROSECONDS_PER_SECOND
|
||
|
|
NANOSECONDS_PER_SECOND
|
||
|
|
NANOSECONDS_PER_TICK
|
||
|
|
```
|
||
|
|
|
||
|
|
In FreeRTOS-Plus-POSIX, they are located in the custom `time.h`, but ESP-IDF uses newlib's `time.h`, where these definitions are not present.
|
||
|
|
|
||
|
|
## Code Format
|
||
|
|
|
||
|
|
- Files have been formatted by [`uncrustify`](https://github.com/uncrustify/uncrustify), using [FreeRTOS' `uncrustify.cfc`](../freertos/FreeRTOS-Kernel/uncrustify.cfg).
|