mirror of
https://github.com/espressif/esp-idf.git
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135 lines
4.8 KiB
C
135 lines
4.8 KiB
C
// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "esp_err.h"
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#include "sdkconfig.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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ESP_MAC_WIFI_STA,
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ESP_MAC_WIFI_SOFTAP,
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ESP_MAC_BT,
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ESP_MAC_ETH,
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} esp_mac_type_t;
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/** @cond */
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#define TWO_UNIVERSAL_MAC_ADDR 2
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#define FOUR_UNIVERSAL_MAC_ADDR 4
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#if CONFIG_IDF_TARGET_ESP32
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#define UNIVERSAL_MAC_ADDR_NUM CONFIG_ESP32_UNIVERSAL_MAC_ADDRESSES
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#elif CONFIG_IDF_TARGET_ESP32S2
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#define UNIVERSAL_MAC_ADDR_NUM CONFIG_ESP32S2_UNIVERSAL_MAC_ADDRESSES
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#elif CONFIG_IDF_TARGET_ESP32S3
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#define UNIVERSAL_MAC_ADDR_NUM CONFIG_ESP32S3_UNIVERSAL_MAC_ADDRESSES
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#elif CONFIG_IDF_TARGET_ESP32C3
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#define UNIVERSAL_MAC_ADDR_NUM CONFIG_ESP32C3_UNIVERSAL_MAC_ADDRESSES
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#endif
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/** @endcond */
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/**
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* @brief Set base MAC address with the MAC address which is stored in BLK3 of EFUSE or
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* external storage e.g. flash and EEPROM.
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*
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* Base MAC address is used to generate the MAC addresses used by the networking interfaces.
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* If using base MAC address stored in BLK3 of EFUSE or external storage, call this API to set base MAC
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* address with the MAC address which is stored in BLK3 of EFUSE or external storage before initializing
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* WiFi/BT/Ethernet.
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*
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* @note Base MAC must be a unicast MAC (least significant bit of first byte must be zero).
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*
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* @note If not using a valid OUI, set the "locally administered" bit
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* (bit value 0x02 in the first byte) to avoid collisions.
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*
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* @param mac base MAC address, length: 6 bytes.
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*
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* @return ESP_OK on success
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* ESP_ERR_INVALID_ARG If mac is NULL or is not a unicast MAC
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*/
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esp_err_t esp_base_mac_addr_set(const uint8_t *mac);
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/**
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* @brief Return base MAC address which is set using esp_base_mac_addr_set.
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*
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* @param mac base MAC address, length: 6 bytes.
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*
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* @return ESP_OK on success
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* ESP_ERR_INVALID_MAC base MAC address has not been set
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*/
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esp_err_t esp_base_mac_addr_get(uint8_t *mac);
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/**
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* @brief Return base MAC address which was previously written to BLK3 of EFUSE.
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*
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* Base MAC address is used to generate the MAC addresses used by the networking interfaces.
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* This API returns the custom base MAC address which was previously written to BLK3 of EFUSE.
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* Writing this EFUSE allows setting of a different (non-Espressif) base MAC address. It is also
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* possible to store a custom base MAC address elsewhere, see esp_base_mac_addr_set() for details.
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*
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* @param mac base MAC address, length: 6 bytes.
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*
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* @return ESP_OK on success
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* ESP_ERR_INVALID_VERSION An invalid MAC version field was read from BLK3 of EFUSE
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* ESP_ERR_INVALID_CRC An invalid MAC CRC was read from BLK3 of EFUSE
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*/
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esp_err_t esp_efuse_mac_get_custom(uint8_t *mac);
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/**
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* @brief Return base MAC address which is factory-programmed by Espressif in BLK0 of EFUSE.
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*
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* @param mac base MAC address, length: 6 bytes.
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*
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* @return ESP_OK on success
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*/
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esp_err_t esp_efuse_mac_get_default(uint8_t *mac);
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/**
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* @brief Read base MAC address and set MAC address of the interface.
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*
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* This function first get base MAC address using esp_base_mac_addr_get or reads base MAC address
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* from BLK0 of EFUSE. Then set the MAC address of the interface including wifi station, wifi softap,
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* bluetooth and ethernet.
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*
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* @param mac MAC address of the interface, length: 6 bytes.
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* @param type type of MAC address, 0:wifi station, 1:wifi softap, 2:bluetooth, 3:ethernet.
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*
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* @return ESP_OK on success
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*/
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esp_err_t esp_read_mac(uint8_t* mac, esp_mac_type_t type);
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/**
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* @brief Derive local MAC address from universal MAC address.
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*
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* This function derives a local MAC address from an universal MAC address.
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* A `definition of local vs universal MAC address can be found on Wikipedia
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* <https://en.wikipedia.org/wiki/MAC_address#Universal_vs._local>`.
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* In ESP32, universal MAC address is generated from base MAC address in EFUSE or other external storage.
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* Local MAC address is derived from the universal MAC address.
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*
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* @param local_mac Derived local MAC address, length: 6 bytes.
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* @param universal_mac Source universal MAC address, length: 6 bytes.
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*
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* @return ESP_OK on success
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*/
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esp_err_t esp_derive_local_mac(uint8_t* local_mac, const uint8_t* universal_mac);
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#ifdef __cplusplus
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}
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#endif
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