SoC Capabilities

This section lists definitions of the ESP32-S2’s SoC hardware capabilities. These definitions are commonly used in IDF to control which hardware dependent features are supported and thus compiled into the binary.

Note

These defines are currently not considered to be part of the public API, and may be changed at any time.

API Reference

Header File

components/soc/esp32s2/include/soc/soc_caps.h

Macros

SOC_ADC_SUPPORTED

SOC_DAC_SUPPORTED

SOC_UART_SUPPORTED

SOC_TWAI_SUPPORTED

SOC_CP_DMA_SUPPORTED

SOC_DEDICATED_GPIO_SUPPORTED

SOC_GPTIMER_SUPPORTED

SOC_SUPPORTS_SECURE_DL_MODE

SOC_ULP_FSM_SUPPORTED

SOC_RISCV_COPROC_SUPPORTED

SOC_USB_OTG_SUPPORTED

SOC_PCNT_SUPPORTED

SOC_WIFI_SUPPORTED

SOC_ULP_SUPPORTED

SOC_CCOMP_TIMER_SUPPORTED

SOC_ASYNC_MEMCPY_SUPPORTED

SOC_EFUSE_KEY_PURPOSE_FIELD

SOC_TEMP_SENSOR_SUPPORTED

SOC_CACHE_SUPPORT_WRAP

SOC_RTC_FAST_MEM_SUPPORTED

SOC_RTC_SLOW_MEM_SUPPORTED

SOC_RTC_MEM_SUPPORTED

SOC_PSRAM_DMA_CAPABLE

SOC_XT_WDT_SUPPORTED

SOC_I2S_SUPPORTED

SOC_RMT_SUPPORTED

SOC_SDM_SUPPORTED

SOC_GPSPI_SUPPORTED

SOC_LEDC_SUPPORTED

SOC_I2C_SUPPORTED

SOC_SYSTIMER_SUPPORTED

SOC_SUPPORT_COEXISTENCE

SOC_AES_SUPPORTED

SOC_MPI_SUPPORTED

SOC_SHA_SUPPORTED

SOC_HMAC_SUPPORTED

SOC_DIG_SIGN_SUPPORTED

SOC_FLASH_ENC_SUPPORTED

SOC_SECURE_BOOT_SUPPORTED

SOC_MEMPROT_SUPPORTED

SOC_TOUCH_SENSOR_SUPPORTED

SOC_BOD_SUPPORTED

SOC_XTAL_SUPPORT_40M

SOC_ADC_RTC_CTRL_SUPPORTED: < SAR ADC Module

SOC_ADC_DIG_CTRL_SUPPORTED

SOC_ADC_ARBITER_SUPPORTED

SOC_ADC_DIG_IIR_FILTER_SUPPORTED

SOC_ADC_DIG_IIR_FILTER_UNIT_BINDED

SOC_ADC_MONITOR_SUPPORTED

SOC_ADC_DMA_SUPPORTED

SOC_ADC_DIG_SUPPORTED_UNIT(UNIT)

SOC_ADC_PERIPH_NUM

SOC_ADC_CHANNEL_NUM(UNIT)

SOC_ADC_MAX_CHANNEL_NUM

SOC_ADC_ATTEN_NUM: Digital

SOC_ADC_DIGI_CONTROLLER_NUM

SOC_ADC_PATT_LEN_MAX: Two pattern table, each contains 16 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_RESULT_BYTES

SOC_ADC_DIGI_DATA_BYTES_PER_CONV: 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

SOC_BROWNOUT_RESET_SUPPORTED

SOC_CACHE_WRITEBACK_SUPPORTED

SOC_CP_DMA_MAX_BUFFER_SIZE: Maximum size of the buffer that can be attached to descriptor

SOC_CPU_CORES_NUM

SOC_CPU_INTR_NUM

SOC_CPU_BREAKPOINTS_NUM

SOC_CPU_WATCHPOINTS_NUM

SOC_CPU_WATCHPOINT_SIZE

SOC_DAC_CHAN_NUM

SOC_DAC_RESOLUTION

SOC_GPIO_PORT

SOC_GPIO_PIN_COUNT

SOC_GPIO_SUPPORT_PIN_GLITCH_FILTER

SOC_GPIO_FILTER_CLK_SUPPORT_APB

SOC_GPIO_SUPPORT_RTC_INDEPENDENT

SOC_GPIO_SUPPORT_FORCE_HOLD

SOC_GPIO_VALID_GPIO_MASK

SOC_GPIO_VALID_OUTPUT_GPIO_MASK

SOC_GPIO_VALID_DIGITAL_IO_PAD_MASK

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_GPIO_ALLOW_REG_ACCESS: Allow access dedicated GPIO channel by register

SOC_DEDIC_GPIO_HAS_INTERRUPT: Dedicated GPIO has its own interrupt source

SOC_DEDIC_GPIO_OUT_AUTO_ENABLE: Dedicated GPIO output attribution is enabled automatically

SOC_I2C_NUM

SOC_I2C_FIFO_LEN: I2C hardware FIFO depth

SOC_I2C_SUPPORT_SLAVE

SOC_I2C_SUPPORT_HW_CLR_BUS

SOC_I2C_SUPPORT_REF_TICK

SOC_I2C_SUPPORT_APB

SOC_I2S_NUM

SOC_I2S_HW_VERSION_1

SOC_I2S_SUPPORTS_APLL

SOC_I2S_SUPPORTS_PLL_F160M

SOC_I2S_SUPPORTS_DMA_EQUAL

SOC_I2S_SUPPORTS_LCD_CAMERA

SOC_I2S_APLL_MIN_FREQ

SOC_I2S_APLL_MAX_FREQ

SOC_I2S_APLL_MIN_RATE

SOC_I2S_LCD_I80_VARIANT

SOC_LCD_I80_SUPPORTED: Intel 8080 LCD is supported

SOC_LCD_I80_BUSES: Only I2S0 has LCD mode

SOC_LCD_I80_BUS_WIDTH: Intel 8080 bus width

SOC_LEDC_HAS_TIMER_SPECIFIC_MUX

SOC_LEDC_SUPPORT_APB_CLOCK

SOC_LEDC_SUPPORT_REF_TICK

SOC_LEDC_SUPPORT_XTAL_CLOCK

SOC_LEDC_CHANNEL_NUM

SOC_LEDC_TIMER_BIT_WIDTH

SOC_LEDC_SUPPORT_FADE_STOP

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_PCNT_GROUPS

SOC_PCNT_UNITS_PER_GROUP

SOC_PCNT_CHANNELS_PER_UNIT

SOC_PCNT_THRES_POINT_PER_UNIT

SOC_RMT_GROUPS: One RMT group

SOC_RMT_TX_CANDIDATES_PER_GROUP: Number of channels that capable of Transmit in each group

SOC_RMT_RX_CANDIDATES_PER_GROUP: Number of channels that capable of Receive in each group

SOC_RMT_CHANNELS_PER_GROUP: Total 4 channels

SOC_RMT_MEM_WORDS_PER_CHANNEL: Each channel owns 64 words memory (1 word = 4 Bytes)

SOC_RMT_SUPPORT_RX_DEMODULATION: Support signal demodulation on RX path (i.e. remove carrier)

SOC_RMT_SUPPORT_TX_ASYNC_STOP: Support stop transmission asynchronously

SOC_RMT_SUPPORT_TX_LOOP_COUNT: Support transmiting specified number of cycles in loop mode

SOC_RMT_SUPPORT_TX_SYNCHRO: Support coordinate a group of TX channels to start simultaneously

SOC_RMT_SUPPORT_TX_CARRIER_DATA_ONLY: TX carrier can be modulated to data phase only

SOC_RMT_SUPPORT_REF_TICK: Support set REF_TICK as the RMT clock source

SOC_RMT_SUPPORT_APB: Support set APB as the RMT clock source

SOC_RMT_CHANNEL_CLK_INDEPENDENT: Can select different source clock for each channel

SOC_RTCIO_PIN_COUNT

SOC_RTCIO_INPUT_OUTPUT_SUPPORTED

SOC_RTCIO_HOLD_SUPPORTED

SOC_RTCIO_WAKE_SUPPORTED

SOC_SDM_GROUPS

SOC_SDM_CHANNELS_PER_GROUP

SOC_SDM_CLK_SUPPORT_APB

SOC_SPI_HD_BOTH_INOUT_SUPPORTED

SOC_SPI_PERIPH_NUM

SOC_SPI_DMA_CHAN_NUM

SOC_SPI_PERIPH_CS_NUM(i)

SOC_SPI_MAX_CS_NUM

SOC_SPI_MAXIMUM_BUFFER_SIZE

SOC_SPI_MAX_PRE_DIVIDER

SOC_SPI_SUPPORT_DDRCLK

SOC_SPI_SLAVE_SUPPORT_SEG_TRANS

SOC_SPI_SUPPORT_CD_SIG

SOC_SPI_SUPPORT_CONTINUOUS_TRANS

SOC_SPI_SUPPORT_CLK_APB

SOC_SPI_SUPPORT_SLAVE_HD_VER2: The SPI Slave half duplex mode has been updated greatly in ESP32-S2.

SOC_SPI_PERIPH_SUPPORT_MULTILINE_MODE(host_id)

SOC_SPI_PERIPH_SUPPORT_CONTROL_DUMMY_OUT

SOC_MEMSPI_IS_INDEPENDENT

SOC_SPI_SUPPORT_OCT

SOC_MEMSPI_SRC_FREQ_80M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_40M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_26M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_20M_SUPPORTED

SOC_SYSTIMER_COUNTER_NUM

SOC_SYSTIMER_ALARM_NUM

SOC_SYSTIMER_BIT_WIDTH_LO

SOC_SYSTIMER_BIT_WIDTH_HI

SOC_TIMER_GROUPS

SOC_TIMER_GROUP_TIMERS_PER_GROUP

SOC_TIMER_GROUP_COUNTER_BIT_WIDTH

SOC_TIMER_GROUP_SUPPORT_XTAL

SOC_TIMER_GROUP_SUPPORT_APB

SOC_TIMER_GROUP_TOTAL_TIMERS

SOC_TOUCH_VERSION_2: Hardware version of touch sensor

SOC_TOUCH_SENSOR_NUM: 15 Touch channels

SOC_TOUCH_PROXIMITY_CHANNEL_NUM: Support touch proximity channel number.

SOC_TOUCH_PAD_THRESHOLD_MAX: If set touch threshold max value, The touch sensor can’t be in touched status

SOC_TOUCH_PAD_MEASURE_WAIT_MAX: The timer frequency is 8Mhz, the max value is 0xff

SOC_TWAI_CONTROLLER_NUM

SOC_TWAI_CLK_SUPPORT_APB

SOC_TWAI_BRP_MIN

SOC_TWAI_BRP_MAX

SOC_TWAI_SUPPORTS_RX_STATUS

SOC_UART_NUM

SOC_UART_SUPPORT_WAKEUP_INT: Support UART wakeup interrupt

SOC_UART_SUPPORT_APB_CLK: Support APB as the clock source

SOC_UART_SUPPORT_REF_TICK: Support REF_TICK as the clock source

SOC_UART_FIFO_LEN: The UART hardware FIFO length

SOC_UART_BITRATE_MAX: Max bit rate supported by UART

SOC_SPIRAM_SUPPORTED

SOC_SPIRAM_XIP_SUPPORTED

SOC_USB_PERIPH_NUM

SOC_SHA_DMA_MAX_BUFFER_SIZE

SOC_SHA_SUPPORT_DMA

SOC_SHA_SUPPORT_RESUME

SOC_SHA_CRYPTO_DMA

SOC_SHA_SUPPORT_SHA1

SOC_SHA_SUPPORT_SHA224

SOC_SHA_SUPPORT_SHA256

SOC_SHA_SUPPORT_SHA384

SOC_SHA_SUPPORT_SHA512

SOC_SHA_SUPPORT_SHA512_224

SOC_SHA_SUPPORT_SHA512_256

SOC_SHA_SUPPORT_SHA512_T

SOC_RSA_MAX_BIT_LEN

SOC_AES_SUPPORT_DMA

SOC_AES_SUPPORT_GCM

SOC_EFUSE_DIS_DOWNLOAD_ICACHE

SOC_EFUSE_DIS_DOWNLOAD_DCACHE

SOC_EFUSE_HARD_DIS_JTAG

SOC_EFUSE_SOFT_DIS_JTAG

SOC_EFUSE_DIS_BOOT_REMAP

SOC_EFUSE_DIS_LEGACY_SPI_BOOT

SOC_EFUSE_DIS_ICACHE

SOC_SECURE_BOOT_V2_RSA

SOC_EFUSE_SECURE_BOOT_KEY_DIGESTS

SOC_EFUSE_REVOKE_BOOT_KEY_DIGESTS

SOC_SUPPORT_SECURE_BOOT_REVOKE_KEY

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_256

SOC_MEMPROT_CPU_PREFETCH_PAD_SIZE

SOC_MEMPROT_MEM_ALIGN_SIZE

SOC_AES_CRYPTO_DMA

SOC_AES_SUPPORT_AES_128

SOC_AES_SUPPORT_AES_192

SOC_AES_SUPPORT_AES_256

SOC_PHY_DIG_REGS_MEM_SIZE

SOC_WIFI_LIGHT_SLEEP_CLK_WIDTH

SOC_SPI_MEM_SUPPORT_AUTO_WAIT_IDLE

SOC_SPI_MEM_SUPPORT_AUTO_SUSPEND

SOC_SPI_MEM_SUPPORT_SW_SUSPEND

SOC_SPI_MEM_SUPPORT_CONFIG_GPIO_BY_EFUSE

SOC_SPI_MEM_SUPPORT_WRAP

SOC_PM_SUPPORT_EXT0_WAKEUP

SOC_PM_SUPPORT_EXT1_WAKEUP

SOC_PM_SUPPORT_EXT_WAKEUP: Compatible to the old version of IDF

SOC_PM_SUPPORT_WIFI_WAKEUP

SOC_PM_SUPPORT_TOUCH_SENSOR_WAKEUP: Supports waking up from touch pad trigger

SOC_PM_SUPPORT_WIFI_PD

SOC_PM_SUPPORT_RTC_PERIPH_PD

SOC_PM_SUPPORT_RTC_FAST_MEM_PD

SOC_PM_SUPPORT_RTC_SLOW_MEM_PD

SOC_PM_SUPPORT_RC_FAST_PD

SOC_PM_SUPPORT_VDDSDIO_PD

SOC_CONFIGURABLE_VDDSDIO_SUPPORTED

SOC_CLK_APLL_SUPPORTED

SOC_APLL_MULTIPLIER_OUT_MIN_HZ

SOC_APLL_MULTIPLIER_OUT_MAX_HZ

SOC_APLL_MIN_HZ

SOC_APLL_MAX_HZ

SOC_CLK_RC_FAST_D256_SUPPORTED

SOC_RTC_SLOW_CLK_SUPPORT_RC_FAST_D256

SOC_CLK_RC_FAST_SUPPORT_CALIBRATION

SOC_CLK_XTAL32K_SUPPORTED: Support to connect an external low frequency crystal

SOC_COEX_HW_PTI

SOC_TEMPERATURE_SENSOR_SUPPORT_FAST_RC

SOC_WIFI_HW_TSF: Support hardware TSF

SOC_WIFI_FTM_SUPPORT: Support FTM

SOC_WIFI_WAPI_SUPPORT: Support WAPI

SOC_WIFI_CSI_SUPPORT: Support CSI

SOC_WIFI_MESH_SUPPORT: Support WIFI MESH

SOC_WIFI_SUPPORT_VARIABLE_BEACON_WINDOW: Support delta early time for rf phy on/off

SOC_WIFI_NAN_SUPPORT: Support WIFI Aware (NAN)

SOC_ULP_HAS_ADC

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