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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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@@ -131,27 +131,31 @@ Transmit Mode
When configuring channel in transmit mode, set **tx_config** and the following members of :cpp:type:`rmt_tx_config_t`: When configuring channel in transmit mode, set **tx_config** and the following members of :cpp:type:`rmt_tx_config_t`:
* Transmit the currently configured data items in a loop - **loop_en** .. list::
* Enable the RMT carrier signal - **carrier_en**
* Frequency of the carrier in Hz - **carrier_freq_hz** * Transmit the currently configured data items in a loop - **loop_en**
* Duty cycle of the carrier signal in percent (%) - **carrier_duty_percent** * Enable the RMT carrier signal - **carrier_en**
* Level of the RMT output, when the carrier is applied - **carrier_level** * Frequency of the carrier in Hz - **carrier_freq_hz**
* Enable the RMT output if idle - **idle_output_en** * Duty cycle of the carrier signal in percent (%) - **carrier_duty_percent**
* Set the signal level on the RMT output if idle - **idle_level** * Level of the RMT output, when the carrier is applied - **carrier_level**
:esp32s2: * Specify maximum number of transmissions in a loop - **loop_count** * Enable the RMT output if idle - **idle_output_en**
* Set the signal level on the RMT output if idle - **idle_level**
:esp32s2: * Specify maximum number of transmissions in a loop - **loop_count**
Receive Mode Receive Mode
^^^^^^^^^^^^ ^^^^^^^^^^^^
In receive mode, set **rx_config** and the following members of :cpp:type:`rmt_rx_config_t`: In receive mode, set **rx_config** and the following members of :cpp:type:`rmt_rx_config_t`:
* Enable a filter on the input of the RMT receiver - **filter_en** .. list::
* 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. * Enable a filter on the input of the RMT receiver - **filter_en**
:esp32s2: * Enable the RMT carrier demodulation - **carrier_rm** * 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].
:esp32s2: * Frequency of the carrier in Hz - **carrier_freq_hz** * 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.
:esp32s2: * Duty cycle of the carrier signal in percent (%) - **carrier_duty_percent** :esp32s2: * Enable the RMT carrier demodulation - **carrier_rm**
:esp32s2: * Level of the RMT input, where the carrier is modulated to - **carrier_level** :esp32s2: * Frequency of the carrier in Hz - **carrier_freq_hz**
:esp32s2: * Duty cycle of the carrier signal in percent (%) - **carrier_duty_percent**
:esp32s2: * Level of the RMT input, where the carrier is modulated to - **carrier_level**
Finalize Configuration Finalize Configuration
^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^