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feat(rmt): introduce RMT_ENCODER_FUNC_ATTR for encoder functions

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Closes https://github.com/espressif/esp-idf/issues/15832
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morris
2025-04-23 15:37:54 +08:00
parent 182b33efb2
commit ae5f8e550c
19 changed files with 88 additions and 33 deletions
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docs/en/api-reference/peripherals/rmt.rst
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@@ -589,6 +589,8 @@ There is a Kconfig option :ref:`CONFIG_RMT_TX_ISR_CACHE_SAFE` and :ref:`CONFIG_R
This Kconfig option allows the interrupt handler to run while the cache is disabled but comes at the cost of increased IRAM consumption.
Please note, when :ref:`CONFIG_RMT_TX_ISR_CACHE_SAFE` is enabled, you must also place the encoder functions (mainly the :cpp:member:`rmt_encoder_t::encode` and :cpp:member:`rmt_encoder_t::reset`) into IRAM. You can use :c:macro:`RMT_ENCODER_FUNC_ATTR` to decorate your encoder functions.
Another Kconfig option :ref:`CONFIG_RMT_RECV_FUNC_IN_IRAM` can place :cpp:func:`rmt_receive` into the IRAM as well. So that the receive function can be used even when the flash cache is disabled.
.. _rmt-thread-safety: