Merges https://github.com/espressif/esp-idf/pull/8312
If we use I2C in slave mode, we can use input-only pin for SCL line (GPI 34-39).
But there is a problem in i2c_set_pin() which is called by i2c_param_config().
In case of using GPI as SCL the following statements are failed:
1. gpio_set_level(scl_io_num, I2C_IO_INIT_LEVEL);
Function fails because it cannot set level for input pin. As a result a ESP_LOGE() is called.
2. gpio_set_direction(scl_io_num, GPIO_MODE_INPUT_OUTPUT_OD);
Function fails because it accepts only GPIO pins. ESP_LOGE() is called, input mode is not enabled for the pin and as a result - no interrupts from the pin.
This commit removes the usage of all legacy FreeRTOS data types that
are exposed via configENABLE_BACKWARD_COMPATIBILITY. Legacy types can
still be used by enabling CONFIG_FREERTOS_ENABLE_BACKWARD_COMPATIBILITY.
peripheral enable/disable usually should be managed by driver itself,
so make it as espressif private APIs, not recommended for user to use it
in application code.
However, if user want to re-write the driver or ports to other platform,
this is still possible by including the header in this way:
"esp_private/peripheral_ctrl.h"
In I2C slave mode, clock source can now be changed, according to
the flags specified in `i2c_config_t` structure. Thus, ESP32-S2
can now act as an I2C slave, even with a 400KHz master clock.
It is now possible to call `i2c_master_cmd_begin()` on the same
`i2c_cmd_handle_t` parameter. Thus, no extra allocation will be performed.
Moreover, as commands contains pointers to data, these can be modified
between two calls to `i2c_master_cmd_begin()`. This becomes very handy
for framebuffers.
Only a single command will be allocated now when a read or write is
prepared in the command list. The size of a command's buffer is not
limited to 255 bytes anymore.
Application can now provide a buffer in order to allocate commands link.
Fixed few unclear details in the documentation.
Added wrappers to simplify I2C transfers.
Closes https://github.com/espressif/esp-idf/issues/5108
When `DIS_USB_JTAG` eFuse is NOT burned (`False`), it is not possible
to set pins 18 and 19 as GPIOs. This commit solves this by manually
disabling USB JTAG when using pins 18 or 19.
The functions shall use `gpio_hal_iomux_func_sel` instead of
`PIN_FUNC_SELELECT`.
During HAL layer refactoring and new chip bringup, we have several
caps.h for each part, to reduce the conflicts to minimum. But this is
The capabilities headers will be relataive stable once completely
written (maybe after the featues are supported by drivers).
Now ESP32 and ESP32-S2 drivers are relative stable, making it a good
time to combine all these caps.h into one soc_caps.h
This cleanup also move HAL config and pin config into separated files,
to make the responsibilities of these headers more clear. This is
helpful for the stabilities of soc_caps.h because we want to make it
public some day.
