api-guides/cplusplus api-guides/dfu api-guides/index api-reference/peripherals/i2s api-reference/peripherals/spi_features api-reference/peripherals/sdio_slave api-reference/peripherals/dedic_gpio api-reference/peripherals/sd_pullup_requirements api-reference/peripherals/index api-reference/peripherals/sdmmc_host api-reference/network/index api-reference/system/sleep_modes api-reference/system/power_management api-reference/system/inc/power_management_esp32 api-reference/system/inc/power_management_esp32s2_and_later api-reference/protocols/esp_serial_slave_link api-reference/protocols/esp_sdio_slave_protocol api-reference/protocols/index