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refactor(rmt): function placement by tx and rx separately

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morris
2025-03-26 14:09:14 +08:00
parent cb1902af19
commit bb4eb3ac8b
20 changed files with 168 additions and 70 deletions
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docs/en/api-reference/peripherals/rmt.rst
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@@ -567,7 +567,7 @@ Cache Safe
By default, the RMT interrupt is deferred when the Cache is disabled for reasons like writing or erasing the main Flash. Thus the transaction-done interrupt does not get handled in time, which is not acceptable in a real-time application. What is worse, when the RMT transaction relies on **ping-pong** interrupt to successively encode or copy RMT symbols, a delayed interrupt can lead to an unpredictable result.
There is a Kconfig option :ref:`CONFIG_RMT_ISR_CACHE_SAFE` that has the following features:
There is a Kconfig option :ref:`CONFIG_RMT_TX_ISR_CACHE_SAFE` and :ref:`CONFIG_RMT_RX_ISR_CACHE_SAFE` that has the following features:
1. Enable the interrupt being serviced even when the cache is disabled
2. Place all functions used by the ISR into IRAM [2]_
@@ -594,7 +594,7 @@ The following functions are allowed to use under ISR context as well.
Kconfig Options
^^^^^^^^^^^^^^^
- :ref:`CONFIG_RMT_ISR_CACHE_SAFE` controls whether the default ISR handler can work when cache is disabled, see also :ref:`rmt-cache-safe` for more information.
- :ref:`CONFIG_RMT_TX_ISR_CACHE_SAFE` and :ref:`CONFIG_RMT_RX_ISR_CACHE_SAFE` control whether the default ISR handler can work when cache is disabled, see also :ref:`rmt-cache-safe` for more information.
- :ref:`CONFIG_RMT_ENABLE_DEBUG_LOG` is used to enable the debug log at the cost of increased firmware binary size.
- :ref:`CONFIG_RMT_RECV_FUNC_IN_IRAM` controls where to place the RMT receive function (IRAM or Flash), see :ref:`rmt-cache-safe` for more information.