Struct Efuse

pub struct Efuse;

Available on crate feature unstable only.

A struct representing the eFuse functionality of the chip.

Implementations

impl Efuse

pub fn read_base_mac_address() -> [u8; 6]

Reads chip’s MAC address from the eFuse storage.

pub fn flash_encryption() -> bool

Get status of SPI boot encryption.

pub fn rwdt_multiplier() -> u8

Get the multiplier for the timeout value of the RWDT STAGE 0 register.

pub fn block_version() -> (u8, u8)

Get efuse block version

see https://github.com/espressif/esp-idf/blob/dc016f5987/components/hal/efuse_hal.c#L27-L30

pub fn rtc_calib_version() -> u8

Get version of RTC calibration block

see https://github.com/espressif/esp-idf/blob/903af13e8/components/efuse/esp32c6/esp_efuse_rtc_calib.c#L20

pub fn rtc_calib_init_code(_unit: u8, atten: Attenuation) -> Option<u16>

Get ADC initial code for specified attenuation from efuse

see https://github.com/espressif/esp-idf/blob/903af13e8/components/efuse/esp32c6/esp_efuse_rtc_calib.c#L32

pub fn rtc_calib_cal_mv(_unit: u8, atten: Attenuation) -> u16

Get ADC reference point voltage for specified attenuation in millivolts

see https://github.com/espressif/esp-idf/blob/903af13e8/components/efuse/esp32c6/esp_efuse_rtc_calib.c#L42

pub fn rtc_calib_cal_code(_unit: u8, atten: Attenuation) -> Option<u16>

Get ADC reference point digital code for specified attenuation

see https://github.com/espressif/esp-idf/blob/903af13e8/components/efuse/esp32c6/esp_efuse_rtc_calib.c#L42

pub fn major_chip_version() -> u8

Returns the major hardware revision

pub fn minor_chip_version() -> u8

Returns the minor hardware revision

pub fn chip_revision() -> u16

Returns the hardware revision

The chip version is calculated using the following formula: MAJOR * 100 + MINOR. (if the result is 1, then version is v0.1)

impl Efuse

pub fn read_field_le<T: AnyBitPattern>(field: EfuseField) -> T

Read field value in a little-endian order

pub fn read_field_be<T: AnyBitPattern>(field: EfuseField) -> T

Read field value in a big-endian order

pub fn read_bit(field: EfuseField) -> bool

Read bit value.

This function panics if the field’s bit length is not equal to 1.

impl Efuse

pub fn set_mac_address(mac: [u8; 6]) -> Result<(), SetMacError>

Set the base mac address

The new value will be returned by read_mac_address instead of the one hard-coded in eFuse. This does not persist across device resets.

Can only be called once. Returns Err(SetMacError::AlreadySet) otherwise.

pub fn mac_address() -> [u8; 6]

Get base mac address

By default this reads the base mac address from eFuse, but it can be overridden by set_mac_address.