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feat(driver_twai): support rx frame timestamp for all chips

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Closes https://github.com/espressif/esp-idf/issues/4527
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wanckl
2026-01-16 16:33:37 +08:00
committed by morris
parent 478f63c0ab
commit 5be29de6e0
18 changed files with 256 additions and 39 deletions
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7
docs/en/api-reference/peripherals/twai.rst
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@@ -168,6 +168,13 @@ Receiving messages inside the callback:
Similarly, since the driver uses pointers for message passing, you must configure the pointer :cpp:member:`twai_frame_t::buffer` and its memory length :cpp:member:`twai_frame_t::buffer_len` before receiving.
Frame Timestamp
---------------
The TWAI driver supports creating a 64-bit timestamp for each successfully received frame, enabling this feature by configuring the :cpp:member:`twai_onchip_node_config_t::timestamp_resolution_hz` field when creating the node. The timestamp is stored in the :cpp:member:`twai_frame_t::header::timestamp` field of the received frame.
The node time inherits from the system time, i.e. the time starts from the power-on of the chip, and is not affected by the stop/restart/BUS_OFF state during the node's lifetime.
Stopping and Deleting the Node
------------------------------