83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/* ESPNOW Example
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
|
|
#ifndef ESPNOW_EXAMPLE_H
|
|
#define ESPNOW_EXAMPLE_H
|
|
|
|
/* ESPNOW can work in both station and softap mode. It is configured in menuconfig. */
|
|
#if CONFIG_STATION_MODE
|
|
#define ESPNOW_WIFI_MODE WIFI_MODE_STA
|
|
#define ESPNOW_WIFI_IF ESP_IF_WIFI_STA
|
|
#else
|
|
#define ESPNOW_WIFI_MODE WIFI_MODE_AP
|
|
#define ESPNOW_WIFI_IF ESP_IF_WIFI_AP
|
|
#endif
|
|
|
|
#define ESPNOW_QUEUE_SIZE 6
|
|
|
|
#define IS_BROADCAST_ADDR(addr) (memcmp(addr, s_example_broadcast_mac, ESP_NOW_ETH_ALEN) == 0)
|
|
|
|
typedef enum {
|
|
EXAMPLE_ESPNOW_SEND_CB,
|
|
EXAMPLE_ESPNOW_RECV_CB,
|
|
} example_espnow_event_id_t;
|
|
|
|
typedef struct {
|
|
uint8_t mac_addr[ESP_NOW_ETH_ALEN];
|
|
esp_now_send_status_t status;
|
|
} example_espnow_event_send_cb_t;
|
|
|
|
typedef struct {
|
|
uint8_t mac_addr[ESP_NOW_ETH_ALEN];
|
|
uint8_t *data;
|
|
int data_len;
|
|
} example_espnow_event_recv_cb_t;
|
|
|
|
typedef union {
|
|
example_espnow_event_send_cb_t send_cb;
|
|
example_espnow_event_recv_cb_t recv_cb;
|
|
} example_espnow_event_info_t;
|
|
|
|
/* When ESPNOW sending or receiving callback function is called, post event to ESPNOW task. */
|
|
typedef struct {
|
|
example_espnow_event_id_t id;
|
|
example_espnow_event_info_t info;
|
|
} example_espnow_event_t;
|
|
|
|
enum {
|
|
EXAMPLE_ESPNOW_DATA_BROADCAST,
|
|
EXAMPLE_ESPNOW_DATA_UNICAST,
|
|
EXAMPLE_ESPNOW_DATA_MAX,
|
|
};
|
|
|
|
/* User defined field of ESPNOW data in this example. */
|
|
typedef struct {
|
|
uint8_t type; //Broadcast or unicast ESPNOW data.
|
|
uint8_t state; //Indicate that if has received broadcast ESPNOW data or not.
|
|
uint16_t seq_num; //Sequence number of ESPNOW data.
|
|
uint16_t crc; //CRC16 value of ESPNOW data.
|
|
uint32_t magic; //Magic number which is used to determine which device to send unicast ESPNOW data.
|
|
uint8_t payload[0]; //Real payload of ESPNOW data.
|
|
} __attribute__((packed)) example_espnow_data_t;
|
|
|
|
/* Parameters of sending ESPNOW data. */
|
|
typedef struct {
|
|
bool unicast; //Send unicast ESPNOW data.
|
|
bool broadcast; //Send broadcast ESPNOW data.
|
|
uint8_t state; //Indicate that if has received broadcast ESPNOW data or not.
|
|
uint32_t magic; //Magic number which is used to determine which device to send unicast ESPNOW data.
|
|
uint16_t count; //Total count of unicast ESPNOW data to be sent.
|
|
uint16_t delay; //Delay between sending two ESPNOW data, unit: ms.
|
|
int len; //Length of ESPNOW data to be sent, unit: byte.
|
|
uint8_t *buffer; //Buffer pointing to ESPNOW data.
|
|
uint8_t dest_mac[ESP_NOW_ETH_ALEN]; //MAC address of destination device.
|
|
} example_espnow_send_param_t;
|
|
|
|
#endif
|