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rmt: update doc

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morris
2020-03-24 13:25:29 +08:00
parent 0c17af3ea4
commit 9f035edb64
1 changed files with 19 additions and 15 deletions
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docs/en/api-reference/peripherals/rmt.rst
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@@ -131,6 +131,8 @@ Transmit Mode
When configuring channel in transmit mode, set **tx_config** and the following members of :cpp:type:`rmt_tx_config_t`:
.. list::
* Transmit the currently configured data items in a loop - **loop_en**
* Enable the RMT carrier signal - **carrier_en**
* Frequency of the carrier in Hz - **carrier_freq_hz**
@@ -145,6 +147,8 @@ Receive Mode
In receive mode, set **rx_config** and the following members of :cpp:type:`rmt_rx_config_t`:
.. list::
* Enable a filter on the input of the RMT receiver - **filter_en**
* A threshold of the filter, set in the number of ticks - **filter_ticks_thresh**. Pulses shorter than this setting will be filtered out. Note, that the range of entered tick values is [0..255].
* A pulse length threshold that will turn the RMT receiver idle, set in number of ticks - **idle_threshold**. The receiver will ignore pulses longer than this setting.