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mac address: add the number of MAC address generated from efuse for user to choose

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1. Add the number of MAC address generated from efuse for user to choose.

2. Add MAC address derive method.
This commit is contained in:
XiaXiaotian
2017-03-02 14:57:45 +08:00
parent 6d061ec903
commit d3eede2110
6 changed files with 115 additions and 58 deletions
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42
components/esp32/include/esp_system.h
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@@ -24,12 +24,16 @@
extern "C" {
#endif
enum {
typedef enum {
ESP_MAC_WIFI_STA,
ESP_MAC_WIFI_SOFTAP,
ESP_MAC_BT,
ESP_MAC_ETH,
};
} esp_mac_type_t;
#define TWO_MAC_ADDRESS_FROM_EFUSE 2
#define FOUR_MAC_ADDRESS_FROM_EFUSE 4
#define NUM_MAC_ADDRESS_FROM_EFUSE CONFIG_NUMBER_OF_MAC_ADDRESS_GENERATED_FROM_EFUSE
/**
* @attention application don't need to call this function anymore. It do nothing and will
@@ -126,14 +130,42 @@ esp_err_t system_efuse_read_mac(uint8_t mac[6]) __attribute__ ((deprecated));
* @brief Read hardware MAC address and set MAC address of the interface.
*
* This function first reads hardware MAC address from efuse. Then set the MAC address of the interface
* including wifi station, wifi softap, bluetooth and ethernet according to the offset value in menuconfig.
* including wifi station, wifi softap, bluetooth and ethernet.
*
* @param mac MAC address of the interface, length: 6 bytes.
* @param interface interface, 0:wifi station, 1:wifi softap, 2:bluetooth, 3:ethernet.
* @param type type of MAC address, 0:wifi station, 1:wifi softap, 2:bluetooth, 3:ethernet.
*
* @return ESP_OK on success
*/
esp_err_t esp_read_mac(uint8_t* mac, int interface);
esp_err_t esp_read_mac(uint8_t* mac, esp_mac_type_t type);
/**
* @brief Derive MAC address.
*
* This function derives a local MAC address from an universal MAC address.
* Addresses can either be universally administered addresses or locally administered addresses.
* A universally administered address is uniquely assigned to a device by its manufacturer.
* The first three octets (in transmission order) identify the organization that issued the identifier
* and are known as the Organizationally Unique Identifier (OUI).[4] The remainder of the address
* (three octets for MAC-48 and EUI-48 or five for EUI-64) are assigned by that organization in nearly
* any manner they please, subject to the constraint of uniqueness. A locally administered address is
* assigned to a device by a network administrator, overriding the burned-in address.
* Universally administered and locally administered addresses are distinguished by setting
* the second-least-significant bit of the first octet of the address. This bit is also referred to
* as the U/L bit, short for Universal/Local, which identifies how the address is administered.
* If the bit is 0, the address is universally administered. If it is 1, the address is locally administered.
* In the example address 06-00-00-00-00-00 the first octet is 06 (hex), the binary form of which is 00000110,
* where the second-least-significant bit is 1. Therefore, it is a locally administered address.[7] Consequently,
* this bit is 0 in all OUIs.
* In ESP32, universal MAC address is generated from the hardware MAC address in efuse.
* Local MAC address is derived from the universal MAC address.
*
* @param dst_mac Derived local MAC address, length: 6 bytes.
* @param src_mac Source universal MAC address, length: 6 bytes.
*
* @return ESP_OK on success
*/
esp_err_t esp_derive_mac(uint8_t* dst_mac, const uint8_t* src_mac);
/**
* Get SDK version