Useful to check if the next item to receive is wrapped or not.
This is valid only if the ring buffer is initialised with type
RINGBUF_TYPE_ALLOWSPLIT.
This is as per the feature request here:
https://github.com/espressif/esp-idf/issues/806
Signed-off-by: Piyush Shah <piyush@espressif.com>
The earlier available API (xRingbufferGetMaxItemSize())just gives
a static max entry value possible for given ring buffer.
There was a feature request for an API which could provide
a real time available buffer size. See below:
https://github.com/espressif/esp-idf/issues/806
Signed-off-by: Piyush Shah <piyush@espressif.com>
- Use `code` tags instead of a mix of `<pre></pre>` and
`@verbatim .. @endverbatim`
- Remove manually added function prototypes from comment blocks
- Remove of grouping (`\defgroup`) — some extra work is needed
to make groups compatible with the way we auto-generate API
reference from Doxygen XML files. It's pretty easy to add the
grouping directives back if/when we implement support for
Doxygen groups in the later stages of documentation build
process.
- Hide private APIs under `@cond .. @endcond`
- Convert some comments into Doxygen-compatible ones
- Fix various documentation issues: missing documentation for
some parameters, mismatch between parameter names in comment
block and in function prototype.
- Add doxygen comments for functions which didn't have them
(thread local storage).
- Add [out] param tags where necessary
- Redefine `xTaskCreate` and `xTaskCreateStatic` as inline
functions instead of macros.
When compiling
> const ulp_insn_t program[] = {
> I_DELAY(1)
> };
with the xtensa-esp32-elf-g++ compiler i always got the error:
> sorry, unimplemented: non-trivial designated initializers not supported
>
> };
This was due to the different order in the macro and the struct. The struct has another order of the fields (opcode, unused, cycles) vs (cycles, unused, opcode):
> struct {
> uint32_t cycles : 16; /*!< Number of cycles to sleep */
> uint32_t unused : 12; /*!< Unused */
> uint32_t opcode : 4; /*!< Opcode (OPCODE_DELAY) */
> } delay; /*!< Format of DELAY instruction */
After updating the order in the macro it is possible to compile with the g++ compiler.
Merges https://github.com/espressif/esp-idf/pull/1310
This commit backports vTaskDelete() behavior from FreeRTOS v9.0.0 which
allows for the immediate freeing of task memory if the task being deleted
is not currently running and not pinned to the other core. This commit also
fixes a bug in prvCheckTasksWaitingTermination which prevented the
Idle Task from cleaning up all tasks awaiting deletion. Each iteration of the Idle
Task should traverse the xTasksWaitingTermination list and clean up all tasks
not pinned to the other core. The previous implementation would cause
prvCheckTasksWaitingTermination to return when encountering a task
pinned to the other core whilst traversing the xTasksWaitingTermination list.
The test case for vTaskDelete() has been updated to test for the bugfix and
backported deletion behavior.
* Change snprintf for strlcat does not complain w/gcc7.2.0 and it is safer, thanks @projectgus
* Use proper quotes for character literals
Merges https://github.com/espressif/esp-idf/pull/1163
1. Add a hide API for station to receive and process probe request
frame.
2. Fix an issue that wifi/bt coexistence crashes in PSRAM version.
3. Fix an issue that the API for clearing vendor ie can not work.
4. Fix an issue that wifi stop and reboot leads watchdog.
Reported from github:
https://github.com/espressif/esp-idf/issues/1312https://github.com/espressif/esp-idf/issues/1193
Issues:
1. We used to use event group in the driver, which would cause:
a. longer operation time since the event group are based on FreeRTOS timer.
b. Operation fails if the timer queue is not long enough.
2. There might be some issue with event group, we will still try to provide a small test code in other branch.
modification:
1. use queue instead of event-bit for internal commands
2. use queue overwrite for cmd_done event
Timer callback can delete the timer. If CONFIG_ESP_TIMER_PROFILING was
enabled, this caused an access to invalid (freed) memory.
This fix adds a pointer to track the timer while executing the callback.
This is needed so that we can check if callback deletes the timer,
in which case we won't try updating profiling counters for this timer
after the callback is done.
This commit backports the following features from FreeRTOS v9.0.0
- uxSemaphoreGetCount()
- vTimerSetTimerId(), xTimerGetPeriod(), xTimerGetExpiryTime()
- xTimerCreateStatic()
- xEventGroupCreateStatic()
- uxSemaphoreGetCount()
Functions backported previously
- xTaskCreateStatic()
- xQueueCreateStatic()
- xSemaphoreCreateBinaryStatic(), xSemaphoreCreateCountingStatic()
- xSemaphoreCreateMutexStatic(), xSemaphoreCreateRecursiveMutexStatic()
- pcQueueGetName()
- vTaskSetThreadLocalStoragePointer()
- pvTaskGetThreadLocalStoragePointer()
Unit tests were also written for the functions above (except for pcQueueGetName
which is tested in a separate Queue Registry MR). The original tlsp and del cb test case
was deleted and integrated into the test cases of this MR.
When using CPP and C combination this particular file threw error on linking.
Merges https://github.com/espressif/esp-idf/pull/1249
(Amended to add INC_FREERTOS_H guard, comment on #endif)
1. Usage of this module required applications to include additional
files. What files to include is not very intuitive. Instead, it is
better for the header file itself to include other files as required.
2. Even though it may seem logical, it is better to explicitly mention
that an item needs to be "Returned" after a Receive
Signed-off-by: Piyush Shah <piyush@espressif.com>
It was observed that if the ring buffer size provided by application
is not a multiple of 4, some checks were failing (as read_ptr and write_ptr
could shoot beyond the ring buffer boundary), thereby causing asserts.
Simply wrapping around the pointers for such cases fixes the issue.
Moreover, because of the logic for maintaining 4-byte boundary,
it was also possible that a wrap-around occurred for some data,
even when the actual size remaining was sufficient for it.
Eg. Buffer available: 34, data size: 34, 4-byte aligned size: 36
Since the logic compares against 36, it writes 34 bytes and does a
wraparound. But since all 34 bytes are already written, there is
nothing to write after wrapping. It is better to just re-set the
write pointer to the dtart of ring buffer in such cases.
Tested send/receive for various arbitrary sizes of data and for
arbitrary sizes of ring buffer.
Alternative Solutions:
1) Allow only sizes which are multiples of 4, and return error otherwise.
Appropriate code and documentation change would be required
2) Allow arbitrary sizes, but internally add upto 3 bytes to make
the total size a multiple of 4
Signed-off-by: Piyush Shah <piyush@espressif.com>
