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esp_eth_driver_t struct
The Ethernet driver mainly consists of PHY, MAC and the mediator who will handle the request/response from/to MAC, PHY and Users. Ethernet driver adopts an OS timer to check the link status periodically. This structure preserves some important Ethernet attributes (e.g. speed, duplex, link). Function stack_input is the channel which set by user, it will deliver all received packets. If stack_input is set to NULL, then all received packets will be passed to tcp/ip stack. on_lowlevel_init_done and on_lowlevel_deinit_done are callbacks set by user. In the callback, user can do any low level operations (e.g. enable/disable crystal clock).
Syntax
typedef struct
{
esp_eth_mediator_t mediator;
esp_eth_phy_t *phy;
esp_eth_mac_t *mac;
esp_timer_handle_t check_link_timer;
uint32_t check_link_period_ms;
bool auto_nego_en;
eth_speed_t speed;
eth_duplex_t duplex;
_Atomic eth_link_t link;
atomic_int ref_count;
void *priv;
_Atomic esp_eth_fsm_t fsm;
#if CONFIG_ETH_TRANSMIT_MUTEX
SemaphoreHandle_t transmit_mutex;
#endif
esp_err_t (*stack_input)(esp_eth_handle_t eth_handle, uint8_t *buffer, uint32_t length, void *priv);
esp_err_t (*on_lowlevel_init_done)(esp_eth_handle_t eth_handle);
esp_err_t (*on_lowlevel_deinit_done)(esp_eth_handle_t eth_handle);
esp_err_t (*customized_read_phy_reg)(esp_eth_handle_t eth_handle, uint32_t phy_addr, uint32_t phy_reg, uint32_t *reg_value);
esp_err_t (*customized_write_phy_reg)(esp_eth_handle_t eth_handle, uint32_t phy_addr, uint32_t phy_reg, uint32_t reg_value);
} esp_eth_driver_t;
Fields
Field
Declared as
_Atomic eth_link_t
atomic_int
void *
esp_err_t (*)(esp_eth_handle_t eth_handle, uint32_t phy_addr, uint32_t phy_reg, uint32_t *reg_value)