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LIBRARIES
WHAT'S NEW
Simplifying Authenticated Cloud Connectivity for Any Device.
How Wi-Fi and Cellular connectivity modules with ExpressLink can help create secure cloud connected devices. See the blog post.
Designing an energy efficient and cloud-connected IoT solution with CoAP.
A client/server, request/response, UDP-based protocol for efficiency and cloud compatibility. See the blog post.
Introducing FreeRTOS Kernel version 11.0.0:
A Major Release with Symmetric Multiprocessing (SMP) Support. See the blog post.
FreeRTOS Roadmap and Code Contribution process.
The FreeRTOS roadmap and code contribution process are now published here and on GitHub. See the blog post.
OPC-UA over TSN with FreeRTOS.
A development project to give applications consistent access to hardware TSN capabilities. See the blog post.

File System Error Code

[FreeRTOS Embedded File System API]

Error codes returned by the embedded file system API functions are detailed in the table below.

Value Error Code Description
1 F_ERR_RESERVED_1 The specified drive does not exist.
2 F_ERR_NOTFORMATTED The volume is not formatted.
3 F_ERR_INVALIDDIR The directory specified is not valid.
4 F_ERR_INVALIDNAME The file name specified is not valid.
5 F_ERR_NOTFOUND The file or directory could not be found.
6 F_ERR_DUPLICATED The file or directory already exists.
7 F_ERR_NOMOREENTRY The volume is full.
8 F_ERR_NOTOPEN A function cannot complete because the file is not open.
9 F_ERR_EOF End of file.
10 F_ERR_RESERVED_2 Not used.
11 F_ERR_NOTUSEABLE An invalid parameter was passed into f_seek().
12 F_ERR_LOCKED The file is already opened for writing / appending.
13 F_ERR_ACCESSDENIED The necessary physical read and/or write functions are not available for the volume.
14 F_ERR_NOTEMPTY The directory cannot be deleted because it is not empty.
15 F_ERR_INITFUNC No init function is available for the driver, or the function generated an error.
16 F_ERR_CARDREMOVED The card is not present.
17 F_ERR_ONDRIVE There is a non-recoverable error on the drive.
18 F_ERR_INVALIDSECTOR A sector has developed an error.
19 F_ERR_READ There was an error when reading the volume.
20 F_ERR_WRITE There was an error when writing to the volume.
21 F_ERR_INVALIDMEDIA The media is not recognised.
22 F_ERR_BUSY The access semaphore was not obtained before the timeout expired.
24 F_ERR_INVFATTYPE The FAT type is not recognised.
25 F_ERR_MEDIATOOSMALL Media is too small for the type of format requested.
26 F_ERR_MEDIATOOLARGE Media is too big for the type of format requested.
27 F_ERR_NOTSUPPSECTORSIZE The sector size is not supported. The only supported sector size is 512 bytes.
28 F_ERR_ALLOCATION There was a memory allocation error.
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