IPC (Inter-Processor Call) component has been moved to ``esp_system``.
Thus, any project presenting a ``CMakeLists.txt`` file with the parameters ``PRIV_REQUIRES esp_ipc`` or ``REQUIRES esp_ipc``, should be modified to simply remove these options as ``esp_system`` component is included by default.
* The function ``bootloader_common_get_reset_reason()`` has been removed. Please use the function ``esp_rom_get_reset_reason()`` in the ROM component.
* The functions ``esp_secure_boot_verify_sbv2_signature_block()`` and ``esp_secure_boot_verify_rsa_signature_block()`` have been removed without replacement. We don't expect users to use these directly. If they are indeed still neccessary, please open a feature request on github explaining why these functions are necessary to you.
Deprecated ROM related header files from ``components/esp32/rom/`` (old include path: ``rom/*.h``) have been deleted. Please update to use the new target-specific path from ``components/esp_rom/include/{IDF_TARGET_NAME}/`` (new include path: ``{IDF_TARGET_NAME}/rom/*.h``).
- The header files ``soc/cpu.h`` have been deleted and deprecated CPU util functions have been removed. ESP-IDF developers should include ``esp_cpu.h`` instead for equivalent functions.
- The header files ``hal/cpu_ll.h``, ``hal/cpu_hal.h``, ``hal/soc_ll.h``, ``hal/soc_hal.h`` and ``interrupt_controller_hal.h`` CPU API functions have been deprecated. ESP-IDF developers should include ``esp_cpu.h`` instead for equivalent functions.
- The header file ``compare_set.h`` have been deleted. ESP-IDF developers should use ``esp_cpu_compare_and_set()`` function provided in ``esp_cpu.h`` instead.
-``esp_cpu_get_ccount()``, ``esp_cpu_set_ccount()`` and ``esp_cpu_in_ocd_debug_mode()`` were removed from ``esp_cpu.h``. ESP-IDF developers should use respectively ``esp_cpu_get_cycle_count()``, ``esp_cpu_set_cycle_count()`` and ``esp_cpu_dbgr_is_attached()`` instead.
- The header file ``esp_intr.h`` has been deleted. Please include ``esp_intr_alloc.h`` to allocate and manipulate interrupts.
- The header file ``esp_panic.h`` has been deleted. ESP-IDF developers should include ``esp_private/panic_reason.h`` to get supported panic reasons. And should include ``esp_debug_helpers.h`` to use any debug related helper functions, e.g. print backtrace.
- The header file ``soc_log.h`` is now renamed to ``esp_hw_log.h`` and all logging macros have been updated from ``SOC_LOGx`` to ``ESP_HW_LOGx``. ESP-IDF users must use the later form.
- The header files ``spinlock.h``, ``clk_ctrl_os.h`` and ``rtc_wdt.h`` must now be included without the ``soc`` prefix. Eg:- ``#include "spinlock.h"``.
-``esp_chip_info()`` returns the chip version in the format = 100 * ``major eFuse version`` + ``minor eFuse version``. Thus, the ``revision`` in the ``esp_chip_info_t`` structure is expanded to uint16_t to fit the new format.
- The target specific header files ``spiram.h`` have been deleted. The header file ``esp_spiram.h`` has been deleted. A new component ``esp_psram`` is created, you should include ``esp_psram.h`` instead. Besides, you might need to add ``esp_psram`` component to the list of component requirements in CMakeLists.txt.
-``esp_spiram_get_chip_size`` and ``esp_spiram_get_size`` have been deleted. You should use ``esp_psram_get_size`` instead.
The parameter type of function ``esp_secure_boot_read_key_digests()`` changed from ``ets_secure_boot_key_digests_t*`` to ``esp_secure_boot_key_digests_t*``. ``ets_secure_boot_key_digests_t*``. The new type is the same as the old one, except that the ``allow_key_revoke`` flag has been removed. The latter was always set to ``true`` in current code, hence, it didn't provide additional information.
- The header files ``esp_random.h``, ``esp_mac.h`` and ``esp_chip_info.h``, which were all previously indirectly included via the header file ``esp_system.h``, must now be included directly. These headers are removed from ``esp_system.h``.
- The header file ``eh_frame_parser.h`` must now be included with a ``esp_private`` prefix like ``#include "esp_private/eh_frame_parser.h"``.
- Public API headers who are listed in the Doxyfiles won't expose unstable and unnecessary soc header files like ``soc/soc.h``, ``soc/rtc.h``. That means, the user has to explicitly include them in their code if these "missing" header files are still wanted.
- Kconfig option ``LEGACY_INCLUDE_COMMON_HEADERS`` is also removed.
- The header file ``soc/soc_memory_types.h`` has been deprecated. Users should use the ``esp_memory_utils.h`` instead. Including ``soc/soc_memory_types.h`` will bring a build warning like ``soc_memory_types.h is deprecated, please migrate to esp_memory_utils.h``
One of the timestamp sources has changed from the legacy timer group driver to the new :doc:`GPTimer <../../api-reference/peripherals/gptimer>`. Kconfig choices like ``APPTRACE_SV_TS_SOURCE_TIMER00`` has been changed to ``APPTRACE_SV_TS_SOURCE_GPTIMER``. User doesn't need to choose the group and timer ID any more.
Removed the FRC2 based legacy implementation of esp_timer available on ESP32. The simpler and more efficient implementation based on the LAC timer is now the only option.
- Added eFuse wafer revisions: major and minor. The `esp_efuse_get_chip_ver()` API is not compatible with these changes this is why it was removed. Please use instead of it the following APIs: `efuse_hal_get_major_chip_version()`, `efuse_hal_get_minor_chip_version()` or `efuse_hal_chip_revision()`.
Previously, the ``configENABLE_BACKWARD_COMPATIBILITY`` option was set by default, thus allowed pre FreeRTOS v8.0.0 function names and data types to be used. The ``configENABLE_BACKWARD_COMPATIBILITY`` is now disabled by default, thus legacy FreeRTOS names/types are no longer supportd by default. Users should either:
- Update their code to remove usage of legacy FreeRTOS names/types
- Enable the :ref:`CONFIG_FREERTOS_ENABLE_BACKWARD_COMPATIBILITY` to explicitly allow the usage of legacy names/types
Tasks Snapshot
^^^^^^^^^^^^^^
The header ``task_snapshot.h`` has been removed from ``freertos/task.h``. ESP-IDF developers should include ``freertos/task_snapshot.h`` in case they need tasks snapshot API.
The function :cpp:func:`vTaskGetSnapshot` now returns ``BaseType_t``. Return value shall be ``pdTRUE`` on success and ``pdFALSE`` otherwise.
FreeRTOS Asserts
^^^^^^^^^^^^^^^^
Previously FreeRTOS asserts were configured separately from the rest of the system using the ``FREERTOS_ASSERT`` kconfig option. This option has now been removed and the configuration is now done through ``COMPILER_OPTIMIZATION_ASSERTION_LEVEL``.
Port Macro APIs
^^^^^^^^^^^^^^^
The file ``portmacro_deprecated.h`` which was added to maintain backward compatibility for deprecated APIs is removed. Users are advised to use the alternate functions for the deprecated APIs as listed below:
-``portENTER_CRITICAL_NESTED()`` is removed. Users should use the ``portSET_INTERRUPT_MASK_FROM_ISR()`` macro instead.
-``portEXIT_CRITICAL_NESTED()`` is removed. Users should use the ``portCLEAR_INTERRUPT_MASK_FROM_ISR()`` macro instead.
-``vPortCPUInitializeMutex()`` is removed. Users should use the ``spinlock_initialize()`` function instead.
-``vPortCPUAcquireMutex()`` is removed. Users should use the ``spinlock_acquire()`` function instead.
-``vPortCPUAcquireMutexTimeout()`` is removed. Users should use the ``spinlock_acquire()`` function instead.
-``vPortCPUReleaseMutex()`` is removed. Users should use the ``spinlock_release()`` function instead.
