Files
esp-idf/components/soc
Erhan Kurubas 1c397699b2 feat(system): add OCD stub bin support for more targets
Add SOC_DEBUG_HAVE_OCD_STUB_BINS for esp32c5, esp32c61, esp32h4,
esp32h21 and esp32p4. Update TEE linker scripts with
correct esp_tee_app_config offsets for the 0x3000 stub reservation
2026-09-03 13:04:45 +02:00
..

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)