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feat(uart): add glitch filter functionality for UART

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Closes https://github.com/espressif/esp-idf/issues/17847
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Song Ruo Jing
2025-12-24 22:28:15 +08:00
parent 77aa76ecc4
commit 8baea2e4a0
24 changed files with 703 additions and 60 deletions
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docs/en/api-reference/peripherals/uart.rst
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@@ -107,6 +107,8 @@ For more information on how to configure the hardware flow control options, plea
Additionally, :cpp:member:`uart_config_t::allow_pd` can be set to enable the backup of the UART configuration registers before entering sleep and restore these registers after exiting sleep. This allows the UART to continue working properly after waking up even when the UART module power domain is entirely off during sleep. This option implies an balance between power consumption and memory usage. If the power consumption is not a concern, you can disable this option to save memory.
If glitches may occur on the RX signal, :cpp:member:`uart_config_t::rx_glitch_filt_thresh` can be set to filter the glitches to ensure the correct data is received (note that this feature is not supported on ESP32 and ESP32-S2). The unit of the :cpp:member:`uart_config_t::rx_glitch_filt_thresh` is nanoseconds. The default value is 0, which means no filtering.
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