# SoC Capabilities

[中文]

This section lists the macro definitions of the ESP32-C2's SoC hardware capabilities. These macros are commonly used by conditional-compilation directives (e.g., `#if`) in ESP-IDF to determine which hardware-dependent features are supported, thus control what portions of code are compiled.

Warning

These macro definitions are currently not considered to be part of the public API, and may be changed in a breaking manner (see ESP-IDF Versions for more details).

## API Reference

### Header File

- components/soc/esp32c2/include/soc/soc_caps.h

- This header file can be included with:

  >     #include "soc/soc_caps.h"

### Macros

SOC_ADC_SUPPORTED

SOC_DEDICATED_GPIO_SUPPORTED

SOC_UART_SUPPORTED

SOC_GDMA_SUPPORTED

SOC_AHB_GDMA_SUPPORTED

SOC_GPTIMER_SUPPORTED

SOC_PHY_SUPPORTED

SOC_BT_SUPPORTED

SOC_WIFI_SUPPORTED

SOC_ASYNC_MEMCPY_SUPPORTED

SOC_SUPPORTS_SECURE_DL_MODE

SOC_EFUSE_KEY_PURPOSE_FIELD

SOC_EFUSE_CONSISTS_OF_ONE_KEY_BLOCK

SOC_EFUSE_SUPPORTED

SOC_TEMP_SENSOR_SUPPORTED

SOC_LEDC_SUPPORTED

SOC_I2C_SUPPORTED

SOC_GPSPI_SUPPORTED

SOC_SHA_SUPPORTED

SOC_ECC_SUPPORTED

SOC_FLASH_ENC_SUPPORTED

SOC_SECURE_BOOT_SUPPORTED

SOC_SYSTIMER_SUPPORTED

SOC_BOD_SUPPORTED

SOC_CLK_TREE_SUPPORTED

SOC_ASSIST_DEBUG_SUPPORTED

SOC_WDT_SUPPORTED

SOC_SPI_FLASH_SUPPORTED

SOC_RNG_SUPPORTED

SOC_LIGHT_SLEEP_SUPPORTED

SOC_DEEP_SLEEP_SUPPORTED

SOC_LP_PERIPH_SHARE_INTERRUPT

SOC_PM_SUPPORTED

SOC_XTAL_SUPPORT_26M

SOC_XTAL_SUPPORT_40M

SOC_ADC_DIG_CTRL_SUPPORTED

  < SAR ADC Module

SOC_ADC_DIG_IIR_FILTER_SUPPORTED

SOC_ADC_MONITOR_SUPPORTED

SOC_ADC_DIG_SUPPORTED_UNIT(UNIT)

SOC_ADC_PERIPH_NUM

SOC_ADC_CHANNEL_NUM(PERIPH_NUM)

SOC_ADC_MAX_CHANNEL_NUM

SOC_ADC_ATTEN_NUM

  Digital

SOC_ADC_DIGI_CONTROLLER_NUM

SOC_ADC_PATT_LEN_MAX

  One pattern table, each contains 8 items. Each item takes 1 byte

SOC_ADC_DIGI_MIN_BITWIDTH

SOC_ADC_DIGI_MAX_BITWIDTH

SOC_ADC_DIGI_IIR_FILTER_NUM

SOC_ADC_DIGI_MONITOR_NUM

  F_sample = F_digi_con / 2 / interval. F_digi_con = 5M for now. 30 <= interval<= 4095

SOC_ADC_SAMPLE_FREQ_THRES_HIGH

SOC_ADC_SAMPLE_FREQ_THRES_LOW

  RTC

SOC_ADC_RTC_MIN_BITWIDTH

SOC_ADC_RTC_MAX_BITWIDTH

  Calibration

SOC_ADC_CALIBRATION_V1_SUPPORTED

  support HW offset calibration version 1

SOC_ADC_SELF_HW_CALI_SUPPORTED

  support HW offset self calibration ADC power control is shared by PWDET, TempSensor

SOC_ADC_SHARED_POWER

SOC_BROWNOUT_RESET_SUPPORTED

SOC_SHARED_IDCACHE_SUPPORTED

SOC_CACHE_FREEZE_SUPPORTED

SOC_CPU_CORES_NUM

SOC_CPU_INTR_NUM

SOC_CPU_HAS_FLEXIBLE_INTC

SOC_CPU_HAS_CSR_PC

SOC_CPU_BREAKPOINTS_NUM

SOC_CPU_WATCHPOINTS_NUM

SOC_CPU_WATCHPOINT_MAX_REGION_SIZE

SOC_CPU_IDRAM_SPLIT_USING_PMP

SOC_ECC_SUPPORT_POINT_VERIFY_QUIRK

SOC_AHB_GDMA_VERSION

SOC_GDMA_NUM_GROUPS_MAX

SOC_GDMA_PAIRS_PER_GROUP_MAX

SOC_GPIO_PORT

SOC_GPIO_PIN_COUNT

SOC_GPIO_SUPPORT_PIN_GLITCH_FILTER

SOC_GPIO_FILTER_CLK_SUPPORT_APB

SOC_GPIO_SUPPORT_FORCE_HOLD

SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP

SOC_GPIO_VALID_GPIO_MASK

SOC_GPIO_VALID_OUTPUT_GPIO_MASK

SOC_GPIO_IN_RANGE_MAX

SOC_GPIO_OUT_RANGE_MAX

SOC_GPIO_DEEP_SLEEP_WAKE_VALID_GPIO_MASK

SOC_GPIO_DEEP_SLEEP_WAKE_SUPPORTED_PIN_CNT

SOC_GPIO_VALID_DIGITAL_IO_PAD_MASK

SOC_GPIO_CLOCKOUT_BY_GPIO_MATRIX

SOC_GPIO_CLOCKOUT_CHANNEL_NUM

SOC_DEDIC_GPIO_OUT_CHANNELS_NUM

  8 outward channels on each CPU core

SOC_DEDIC_GPIO_IN_CHANNELS_NUM

  8 inward channels on each CPU core

SOC_DEDIC_PERIPH_ALWAYS_ENABLE

  The dedicated GPIO (a.k.a. fast GPIO) is featured by some customized CPU instructions, which is always enabled

SOC_I2C_NUM

SOC_HP_I2C_NUM

SOC_I2C_FIFO_LEN

  I2C hardware FIFO depth

SOC_I2C_CMD_REG_NUM

  Number of I2C command registers

SOC_I2C_SUPPORT_HW_CLR_BUS

SOC_I2C_SUPPORT_XTAL

SOC_I2C_SUPPORT_RTC

SOC_I2C_SUPPORT_10BIT_ADDR

SOC_LEDC_SUPPORT_PLL_DIV_CLOCK

SOC_LEDC_SUPPORT_XTAL_CLOCK

SOC_LEDC_TIMER_NUM

SOC_LEDC_CHANNEL_NUM

SOC_LEDC_TIMER_BIT_WIDTH

SOC_LEDC_SUPPORT_FADE_STOP

SOC_MMU_PAGE_SIZE_CONFIGURABLE

SOC_MMU_LINEAR_ADDRESS_REGION_NUM

SOC_MMU_PERIPH_NUM

SOC_MPU_CONFIGURABLE_REGIONS_SUPPORTED

SOC_MPU_MIN_REGION_SIZE

SOC_MPU_REGIONS_MAX_NUM

SOC_MPU_REGION_RO_SUPPORTED

SOC_MPU_REGION_WO_SUPPORTED

SOC_RTC_CNTL_CPU_PD_DMA_BUS_WIDTH

SOC_RTC_CNTL_CPU_PD_REG_FILE_NUM

SOC_RTC_CNTL_CPU_PD_DMA_ADDR_ALIGN

SOC_RTC_CNTL_CPU_PD_DMA_BLOCK_SIZE

SOC_RTC_CNTL_CPU_PD_RETENTION_MEM_SIZE

SOC_RTC_CNTL_NEEDS_ATOMIC_ACCESS

SOC_RTCIO_PIN_COUNT

SOC_SHA_SUPPORT_RESUME

SOC_SHA_SUPPORT_SHA1

SOC_SHA_SUPPORT_SHA224

SOC_SHA_SUPPORT_SHA256

SOC_SPI_PERIPH_NUM

SOC_SPI_PERIPH_CS_NUM(i)

SOC_SPI_MAX_CS_NUM

SOC_SPI_MAXIMUM_BUFFER_SIZE

SOC_SPI_SUPPORT_DDRCLK

SOC_SPI_SLAVE_SUPPORT_SEG_TRANS

SOC_SPI_SUPPORT_CD_SIG

SOC_SPI_SUPPORT_CONTINUOUS_TRANS

SOC_SPI_SUPPORT_SLAVE_HD_VER2

SOC_SPI_SUPPORT_CLK_XTAL

SOC_SPI_SUPPORT_CLK_PLL_F40M

SOC_SPI_PERIPH_SUPPORT_MULTILINE_MODE(host_id)

SOC_SPI_PERIPH_SUPPORT_CONTROL_DUMMY_OUT

SOC_SPI_SCT_SUPPORTED

SOC_SPI_SCT_SUPPORTED_PERIPH(PERIPH_NUM)

SOC_SPI_SCT_REG_NUM

SOC_SPI_SCT_BUFFER_NUM_MAX

SOC_SPI_SCT_CONF_BITLEN_MAX

SOC_MEMSPI_IS_INDEPENDENT

SOC_SPI_MAX_PRE_DIVIDER

SOC_SPI_MEM_SUPPORT_AUTO_WAIT_IDLE

SOC_SPI_MEM_SUPPORT_AUTO_SUSPEND

SOC_SPI_MEM_SUPPORT_AUTO_RESUME

SOC_SPI_MEM_SUPPORT_IDLE_INTR

SOC_SPI_MEM_SUPPORT_SW_SUSPEND

SOC_SPI_MEM_SUPPORT_CHECK_SUS

SOC_SPI_MEM_SUPPORT_WRAP

SOC_MEMSPI_SRC_FREQ_60M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_30M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_20M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_15M_SUPPORTED

SOC_SYSTIMER_COUNTER_NUM

SOC_SYSTIMER_ALARM_NUM

SOC_SYSTIMER_BIT_WIDTH_LO

SOC_SYSTIMER_BIT_WIDTH_HI

SOC_SYSTIMER_FIXED_DIVIDER

SOC_SYSTIMER_INT_LEVEL

SOC_SYSTIMER_ALARM_MISS_COMPENSATE

SOC_TIMER_GROUPS

SOC_TIMER_GROUP_TIMERS_PER_GROUP

SOC_TIMER_GROUP_COUNTER_BIT_WIDTH

SOC_TIMER_GROUP_SUPPORT_XTAL

SOC_TIMER_GROUP_TOTAL_TIMERS

SOC_LP_TIMER_BIT_WIDTH_LO

SOC_LP_TIMER_BIT_WIDTH_HI

SOC_MWDT_SUPPORT_XTAL

SOC_EFUSE_DIS_DOWNLOAD_ICACHE

SOC_EFUSE_DIS_PAD_JTAG

SOC_EFUSE_DIS_DIRECT_BOOT

SOC_SECURE_BOOT_V2_ECC

SOC_EFUSE_SECURE_BOOT_KEY_DIGESTS

SOC_FLASH_ENCRYPTED_XTS_AES_BLOCK_MAX

SOC_FLASH_ENCRYPTION_XTS_AES

SOC_FLASH_ENCRYPTION_XTS_AES_OPTIONS

SOC_FLASH_ENCRYPTION_XTS_AES_128

SOC_FLASH_ENCRYPTION_XTS_AES_128_DERIVED

SOC_UART_NUM

SOC_UART_HP_NUM

SOC_UART_FIFO_LEN

  The UART hardware FIFO length

SOC_UART_BITRATE_MAX

  Max bit rate supported by UART

SOC_UART_SUPPORT_WAKEUP_INT

  Support UART wakeup interrupt

SOC_UART_SUPPORT_PLL_F40M_CLK

  Support APB as the clock source

SOC_UART_SUPPORT_RTC_CLK

  Support RTC clock as the clock source

SOC_UART_SUPPORT_XTAL_CLK

  Support XTAL clock as the clock source

SOC_UART_SUPPORT_FSM_TX_WAIT_SEND

SOC_SUPPORT_COEXISTENCE

SOC_COEX_HW_PTI

SOC_EXTERNAL_COEX_ADVANCE

  HARDWARE ADVANCED EXTERNAL COEXISTENCE CAPS

SOC_EXTERNAL_COEX_LEADER_TX_LINE

  EXTERNAL COEXISTENCE TX LINE CAPS

SOC_PHY_DIG_REGS_MEM_SIZE

SOC_WIFI_LIGHT_SLEEP_CLK_WIDTH

SOC_PM_SUPPORT_WIFI_WAKEUP

SOC_PM_SUPPORT_BT_WAKEUP

SOC_PM_SUPPORT_RC_FAST_PD

SOC_PM_SUPPORT_VDDSDIO_PD

SOC_CLK_RC_FAST_D256_SUPPORTED

SOC_RTC_SLOW_CLK_SUPPORT_RC_FAST_D256

SOC_CLK_RC_FAST_SUPPORT_CALIBRATION

SOC_CLK_OSC_SLOW_SUPPORTED

  ESP32C2 only supports to connect an external oscillator, not a crystal

SOC_WIFI_HW_TSF

  Support hardware TSF

SOC_WIFI_FTM_SUPPORT

  Support FTM

SOC_WIFI_TXOP_SUPPORT

  Support TXOP

SOC_WIFI_SUPPORT_VARIABLE_BEACON_WINDOW

  Support delta early time for rf phy on/off

SOC_WIFI_PHY_NEEDS_USB_WORKAROUND

  SoC has WiFi and USB PHYs interference, needs a workaround

SOC_BLE_SUPPORTED

  Support Bluetooth Low Energy hardware

SOC_BLE_MESH_SUPPORTED

  Support BLE MESH

SOC_ESP_NIMBLE_CONTROLLER

  Support BLE EMBEDDED controller V1

SOC_BLE_50_SUPPORTED

  Support Bluetooth 5.0

SOC_BLE_DEVICE_PRIVACY_SUPPORTED

  Support BLE device privacy mode

SOC_BLUFI_SUPPORTED

  Support BLUFI

SOC_BLE_PERIODIC_ADV_ENH_SUPPORTED

  Support For BLE Periodic Adv Enhancements

SOC_PHY_IMPROVE_RX_11B

SOC_PHY_COMBO_MODULE

  Support Wi-Fi and BLE

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