2016-12-16 23:41:04 +08:00
|
|
|
I2C
|
|
|
|
|
===========
|
|
|
|
|
|
|
|
|
|
Overview
|
|
|
|
|
--------
|
|
|
|
|
|
|
|
|
|
ESP32 has two I2C controllers which can be set as master mode or slave mode.
|
|
|
|
|
|
|
|
|
|
Application Example
|
|
|
|
|
-------------------
|
|
|
|
|
|
|
|
|
|
I2C master and slave example: `examples/18_i2c <https://github.com/espressif/esp-idf/tree/master/examples/18_i2c>`_.
|
|
|
|
|
|
|
|
|
|
API Reference
|
|
|
|
|
-------------
|
|
|
|
|
|
|
|
|
|
Header Files
|
|
|
|
|
^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
* `driver/include/driver/i2c.h <https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/i2c.h>`_
|
|
|
|
|
|
|
|
|
|
Macros
|
|
|
|
|
^^^^^^
|
|
|
|
|
|
|
|
|
|
.. doxygendefine:: I2C_APB_CLK_FREQ
|
|
|
|
|
.. doxygendefine:: I2C_FIFO_LEN
|
|
|
|
|
|
|
|
|
|
Type Definitions
|
|
|
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
.. doxygentypedef:: i2c_cmd_handle_t
|
|
|
|
|
|
|
|
|
|
Enumerations
|
|
|
|
|
^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
.. doxygenenum:: i2c_mode_t
|
|
|
|
|
.. doxygenenum:: i2c_rw_t
|
|
|
|
|
.. doxygenenum:: i2c_trans_mode_t
|
|
|
|
|
.. doxygenenum:: i2c_opmode_t
|
|
|
|
|
.. doxygenenum:: i2c_port_t
|
|
|
|
|
.. doxygenenum:: i2c_addr_mode_t
|
|
|
|
|
|
|
|
|
|
Structures
|
|
|
|
|
^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
.. doxygenstruct:: i2c_config_t
|
|
|
|
|
:members:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Functions
|
|
|
|
|
^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
.. doxygenfunction:: i2c_driver_install
|
|
|
|
|
.. doxygenfunction:: i2c_driver_delete
|
|
|
|
|
.. doxygenfunction:: i2c_param_config
|
|
|
|
|
.. doxygenfunction:: i2c_reset_tx_fifo
|
|
|
|
|
.. doxygenfunction:: i2c_reset_rx_fifo
|
|
|
|
|
.. doxygenfunction:: i2c_isr_register
|
|
|
|
|
.. doxygenfunction:: i2c_isr_free
|
|
|
|
|
.. doxygenfunction:: i2c_set_pin
|
|
|
|
|
.. doxygenfunction:: i2c_master_start
|
|
|
|
|
.. doxygenfunction:: i2c_master_write_byte
|
|
|
|
|
.. doxygenfunction:: i2c_master_write
|
|
|
|
|
.. doxygenfunction:: i2c_master_read_byte
|
|
|
|
|
.. doxygenfunction:: i2c_master_read
|
|
|
|
|
.. doxygenfunction:: i2c_master_stop
|
|
|
|
|
.. doxygenfunction:: i2c_master_cmd_begin
|
|
|
|
|
.. doxygenfunction:: i2c_slave_write_buffer
|
|
|
|
|
.. doxygenfunction:: i2c_slave_read
|
|
|
|
|
.. doxygenfunction:: i2c_set_period
|
2017-01-07 13:14:40 +01:00
|
|
|
.. doxygenfunction:: i2c_get_period
|
2016-12-16 23:41:04 +08:00
|
|
|
.. doxygenfunction:: i2c_set_start_timing
|
|
|
|
|
.. doxygenfunction:: i2c_get_start_timing
|
|
|
|
|
.. doxygenfunction:: i2c_set_stop_timing
|
|
|
|
|
.. doxygenfunction:: i2c_get_stop_timing
|
|
|
|
|
.. doxygenfunction:: i2c_set_data_timing
|
|
|
|
|
.. doxygenfunction:: i2c_get_data_timing
|
|
|
|
|
.. doxygenfunction:: i2c_set_data_mode
|
|
|
|
|
.. doxygenfunction:: i2c_get_data_mode
|
|
|
|
|
.. doxygenfunction:: i2c_cmd_link_create
|
|
|
|
|
.. doxygenfunction:: i2c_cmd_link_delete
|
|
|
|
|
|
