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bcb9d60812
Introduce SOC_USB_FSLS_PHY_NUM on ESP32-S2, ESP32-S3, ESP32-P4 and ESP32-H4 to expose the number of FSLS USB_WRAP PHYs available on each target. This separates FSLS USB_WRAP support from OTG/UTMI support so that downstream code can gate FSLS PHY handling independently.
The SoC component
The soc component provides register-level descriptions for targets supported by ESP-IDF.
| File | Description |
|---|---|
xxx_reg.h/xx_struct.h |
Defines registers layout of a specific module. These files are automated, and should not be updated manually. Please note the register names and layout are subject to change between different chip series. |
xxx_pins.h |
Defines the unchangeable GPIOs used by a specific module. e.g. if a high speed signal is routed through IO MUX, its corresponding GPIO is not selectable. |
soc_caps.h |
Describes the differences in capabilities between different chips. The macros here can also affect cmake build system, Kconfig system, docs system, pytest and CI environment. Changes to this file requires extra caution as they are part of the public API. |
xxx_periph.h |
This is the portal for each peripheral module at the SoC layer, containing all relevant register header files and organizing other key information, such as interrupt sources, hardware signal IDs, etc. |
xxx.peripherals.ld |
This is the linker script that defines each module's memory address. |
The SoC Capabilities
soc_caps.h file describes the SoC capabilities. To used the soc capability macros, you should use the macro functions offered by soc/soc_caps_eval.h.
| Macro function | Description | Example |
|---|---|---|
SOC_IS |
Checks if the current SoC is a specific one. | SOC_IS(ESP32) |
SOC_HAS |
Checks if the current SoC has a specific module. | SOC_HAS(DAC) |
SOC_MODULE_ATTR |
Get the attribute of a specific module. | SOC_MODULE_ATTR(GPTIMER, TIMERS_TOTAL) |
SOC_MODULE_SUPPORT |
Checks if the current SoC supports a specific feature. | SOC_MODULE_SUPPORT(GPTIMER, ETM) |