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6b5e734901
1. add fading functions. 2. clear up ledc.c and ledc.h 3. update api doc. 4. add ledc example 5. edit ledc.rst and add readme for example code. 6. add s_ prefix for static global values. 7. add mutex for fade functions 8. minor changes according to the comments.
90 lines
2.4 KiB
ReStructuredText
90 lines
2.4 KiB
ReStructuredText
LED Control
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===========
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Overview
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--------
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The LED control module is primarily designed to control the intensity of LEDs, although it can be used to generate PWM signals for other purposes as well.
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It has 16 channels which can generate independent waveforms that can be used to drive e.g. RGB LED devices. For maximum flexibility, the high-speed as well
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as the low-speed channels can be driven from one of four high-speed/low-speed timers. The PWM controller also has the ability to automatically increase or
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decrease the duty cycle gradually, allowing for fades without any processor interference.
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Application Example
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-------------------
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LEDC change duty cycle and fading control example: `examples/29_ledc <https://github.com/espressif/esp-idf/tree/master/examples/29_ledc>`_.
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API Reference
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-------------
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Header Files
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^^^^^^^^^^^^
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* `driver/include/driver/ledc.h <https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/ledc.h>`_
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Data Structures
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^^^^^^^^^^^^^^^
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.. doxygenstruct:: ledc_channel_config_t
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:members:
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.. doxygenstruct:: ledc_timer_config_t
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:members:
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Macros
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^^^^^^
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.. doxygendefine:: LEDC_APB_CLK_HZ
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.. doxygendefine:: LEDC_REF_CLK_HZ
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Type Definitions
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^^^^^^^^^^^^^^^^
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.. doxygentypedef:: ledc_isr_handle_t
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Enumerations
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^^^^^^^^^^^^
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.. doxygenenum:: ledc_mode_t
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.. doxygenenum:: ledc_intr_type_t
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.. doxygenenum:: ledc_duty_direction_t
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.. doxygenenum:: ledc_clk_src_t
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.. doxygenenum:: ledc_timer_t
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.. doxygenenum:: ledc_channel_t
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.. doxygenenum:: ledc_timer_bit_t
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Structures
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^^^^^^^^^^
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.. doxygenstruct:: ledc_channel_config_t
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:members:
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.. doxygenstruct:: ledc_timer_config_t
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:members:
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Functions
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^^^^^^^^^
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.. doxygenfunction:: ledc_channel_config
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.. doxygenfunction:: ledc_timer_config
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.. doxygenfunction:: ledc_update_duty
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.. doxygenfunction:: ledc_stop
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.. doxygenfunction:: ledc_set_freq
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.. doxygenfunction:: ledc_get_freq
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.. doxygenfunction:: ledc_set_duty
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.. doxygenfunction:: ledc_get_duty
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.. doxygenfunction:: ledc_set_fade
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.. doxygenfunction:: ledc_isr_register
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.. doxygenfunction:: ledc_timer_set
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.. doxygenfunction:: ledc_timer_rst
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.. doxygenfunction:: ledc_timer_pause
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.. doxygenfunction:: ledc_timer_resume
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.. doxygenfunction:: ledc_bind_channel_timer
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.. doxygenfunction:: ledc_set_fade_with_step
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.. doxygenfunction:: ledc_set_fade_with_time
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.. doxygenfunction:: ledc_fade_func_install
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.. doxygenfunction:: ledc_fade_func_uninstall
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.. doxygenfunction:: ledc_fade_start
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