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add wifi api comments

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liuzhifu 2016-09-07 17:29:08 +08:00 committed by Wu Jian Gang
parent 9027be98d1
commit b86e060647
1 changed files with 418 additions and 22 deletions
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440
components/esp32/include/esp_wifi.h
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@ -40,10 +40,10 @@ typedef enum {
} wifi_interface_t;
typedef enum {
WIFI_COUNTRY_CN = 0,
WIFI_COUNTRY_JP,
WIFI_COUNTRY_US,
WIFI_COUNTRY_EU,
WIFI_COUNTRY_CN = 0, /**< country China, channel range [1, 14] */
WIFI_COUNTRY_JP, /**< country Japan, channel range [1, 14] */
WIFI_COUNTRY_US, /**< country USA, channel range [1, 11] */
WIFI_COUNTRY_EU, /**< country Europe, channel rane [1, 13] */
WIFI_COUNTRY_MAX
} wifi_country_t;
@ -89,54 +89,203 @@ enum {
};
typedef enum {
WIFI_SECOND_CHAN_NONE = 0,
WIFI_SECOND_CHAN_ABOVE,
WIFI_SECOND_CHAN_BELOW,
WIFI_SECOND_CHAN_NONE = 0, /**< the channel width is HT20 */
WIFI_SECOND_CHAN_ABOVE, /**< the channel width is HT40 and the second channel is above the primary channel */
WIFI_SECOND_CHAN_BELOW, /**< the channel width is HT40 and the second channel is below the primary channel */
} wifi_second_chan_t;
/**
* @brief startup wifi driver and register application specific callback function
*
* @attention 1. This API should be called in application startup code to init wifi driver
* @attention 2. The callback fuction is used to provide application specific wifi configuration,
* such as, set the wifi mode, register the event callback, set ap ssid etc before
* wifi is startup
* @attention 3. Avoid to create application task in the callback, otherwise you may get wrong behavior
* @attention 4. If the callback return is not ESP_OK, the startup will fail!
* @attention 5. Before this API can be called, system_init()/esp_event_init()/tcpip_adapter_init() should
* be called firstly
*
* @param wifi_startup_cb_t cb : application specific callback function
*
* @return ESP_OK : succeed
* @return others : fail
*/
typedef esp_err_t (* wifi_startup_cb_t)(void);
void esp_wifi_startup(wifi_startup_cb_t cb);
typedef struct {
void *event_q;
void *event_q; /**< Wifi event q handler, it's a freertos queue */
uint8_t rx_ba_win; /**< TBC */
uint8_t tx_ba_win; /**< TBC */
uint8_t rx_buf_cnt; /**< TBC */
uint8_t tx_buf_cnt; /**< TBC */
} wifi_init_config_t;
/**
* @brief Init wifi
* Alloc resource for wifi driver, such as wifi control structure, rx/tx buffer,
* wifi nvs structure etc, this wifi also start wifi task
*
* @attention 1. This API must be called before all other wifi api can be called
* @attention 2. Generally we should init event_q in *config, wifi driver will post the event
* to this queue when event happens, such as, when sta connects to api, wifi driver
* will post sta connected event to this queue. If the queue is not initialized, wifi
* will not post any events
* @attention 3. For other paramters, currently it's not ready, just ignore it.
*
* @param wifi_init_config_t *config : provide wifi init configuration
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_init(wifi_init_config_t *config);
/**
* @brief Deinit wifi
* Free all resource allocated in esp_wifi_init and stop wifi task
*
* @attention 1. This API should be called if you want to remove wifi driver from the system
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_deinit(void);
/**
* @brief Set the WiFi operating mode
*
* Set the WiFi operating mode as station, soft-AP or station+soft-AP,
* The default mode is soft-AP mode.
*
* @param wifi_mode_t mode : WiFi operating modes:
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_mode(wifi_mode_t mode);
/**
* @brief Get current operating mode of WiFi
*
* @param wifi_mode_t *mode : store current wifi mode
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_mode(wifi_mode_t *mode);
/**
* @brief Start wifi according to current configuration
* If mode is WIFI_MODE_STA, it create sta control block and start sta
* If mode is WIFI_MODE_AP, it create ap control block and start ap
* If mode is WIFI_MODE_APSTA, it create apd and sta control block and start ap and sta
*
* @param null
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_start(void);
/**
* @brief Stop wifi
If mode is WIFI_MODE_STA, it stop sta and free sta control block
* If mode is WIFI_MODE_AP, it stop ap and free ap control block
* If mode is WIFI_MODE_APSTA, it stop sta/ap and free sta/ap control block
*
* @param null
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_stop(void);
/**
* @brief Connect the ESP32 WiFi sta to the AP.
*
* @attention 1. This API only impact WIFI_MODE_STA or WIFI_MODE_APSTA mode
* @attention 2. If the ESP32 is connected to an AP, call esp_wifi_disconnect to disconnect.
*
* @param null
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_connect(void);
/**
* @brief Disconnect the ESP32 WiFi sta from the AP.
*
* @param null
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_disconnect(void);
/**
* @brief Currently this API is just an stub API
*
* @param null
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_clear_fast_connect(void);
/**
* @brief Kick the all sta or associated id equals to aid
*
* @param uint16_t aid : when aid is 0, kick all sta, otherwise kick sta whose associated id is aid
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_kick_station(uint16_t aid);
typedef struct {
char *ssid; /**< SSID of AP */
uint8_t *bssid; /**< MAC address of AP */
uint8_t channel; /**< channel, scan the specific channel */
bool show_hidden; /**< enable to scan AP whose SSID is hidden */
bool show_hidden; /**< enable to scan AP whose SSID is hidden */
} wifi_scan_config_t;
/**
* @brief Scan all available APs.
*
* @attention If this API is called, the found APs are stored in wifi driver dynamic allocated memory and the
* will be freed in esp_wifi_get_ap_list, so generally, call esp_wifi_get_ap_list to cause
* the memory to be freed once the scan is done
*
* @param struct scan_config *config : configuration of scanning
* @param bool block : if block is true, this api will block the caller until the scan is done, otherwise
* it will return immeidately
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_scan_start(wifi_scan_config_t *conf, bool block);
/**
* @brief Stop the scan in process
*
* @param null
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_scan_stop(void);
/**
* @brief Get number of APs found in last scan
*
* @param uint16_t *number : store number of APIs found in last scan
*
* @attention This API can only be called when the scan is completed, otherwise it may get wrong value
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_ap_num(uint16_t *number);
typedef struct {
@ -148,54 +297,222 @@ typedef struct {
wifi_auth_mode_t authmode; /**< authmode of AP */
}wifi_ap_list_t;
/**
* @brief Get AP list found in last scan
*
* @param uint16_t *number : as input param, it stores max AP number ap_list can hold, as output param, it store
the actual AP number this API returns
* @param wifi_ap_list_t *ap_list : a list to hold the found APs
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_ap_list(uint16_t *number, wifi_ap_list_t *ap_list);
typedef enum {
WIFI_PS_NONE,
WIFI_PS_MODEM,
WIFI_PS_LIGHT,
WIFI_PS_MAC,
WIFI_PS_NONE, /**< No power save */
WIFI_PS_MODEM, /**< Modem power save */
WIFI_PS_LIGHT, /**< Light power save */
WIFI_PS_MAC, /**< MAC power save */
} wifi_ps_type_t;
/**
* @brief Set current power save type
*
* @param wifi_ps_type_t type : power save type
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_ps(wifi_ps_type_t type);
/**
* @brief Get current power save type
*
* @param wifi_ps_type_t *type : store current power save type
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_ps(wifi_ps_type_t *type);
#define WIFI_PROTOCOL_11B 1
#define WIFI_PROTOCOL_11G 2
#define WIFI_PROTOCOL_11N 4
esp_err_t esp_wifi_set_protocol(wifi_interface_t ifx, uint8_t protocol);
/**
* @brief Set protocol type of specified interface
* The default protocol is (WIFI_PROTOCOL_11B|WIFI_PROTOCOL_11G|WIFI_PROTOCOL_11N)
*
* @attention Currently we only support 802.11b or 802.11bg or 802.11bgn mode
*
* @param wifi_interface_t ifx : interfaces
* @param uint8_t protocol : wifi protocol bitmap
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_protocol(wifi_interface_t ifx, uint8_t protocol_bitmap);
esp_err_t esp_wifi_get_protocol(wifi_interface_t ifx, uint8_t *protocol);
/**
* @brief Get the current protocol bitmap of specified ifx
*
* @param wifi_interface_t ifx : interfaces
* @param uint8_t protocol : store current wifi protocol bitmap of interface ifx
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_protocol(wifi_interface_t ifx, uint8_t *protocol_bitmap);
typedef enum {
WIFI_BW_HT20 = 0,
WIFI_BW_HT40,
WIFI_BW_HT20 = 0, /* Bandwidth is HT20 */
WIFI_BW_HT40, /* Bandwidth is HT40 */
} wifi_bandwidth_t;
/**
* @brief Set the bandwidth of ESP32 specified interface
*
* @attention 1. API return false if try to configure a interface that is not enable
* @attention 2. WIFI_BW_HT40 is supported only when the interface support 11N
*
* @param wifi_interface_t ifx : interface to be configured
* @param wifi_bandwidth_t bw : bandwidth
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t bw);
/**
* @brief Get the bandwidth of ESP32 specified interface
*
* @attention 1. API return false if try to get a interface that is not enable
*
* @param wifi_interface_t ifx : interface to be configured
* @param wifi_bandwidth_t *bw : store bandwidth of interface ifx
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t *bw);
/**
* @brief Set primary/second channel of ESP32
*
* @attention 1. This is a special API for sniffer
*
* @param uint8_t primary : for HT20, primary is the channel number, for HT40, primary is the primary channel
* @param wifi_second_chan_t second : for HT20, second is ignored, for HT40, second is the second channel
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_channel(uint8_t primary, wifi_second_chan_t second);
/**
* @brief Get the primary/second channel of ESP32
*
* @attention 1. API return false if try to get a interface that is not enable
*
* @param uint8_t *primary : store current primary channel
* @param wifi_second_chan_t *second : store current second channel
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_channel(uint8_t *primary, wifi_second_chan_t *second);
/**
* @brief Set country code
* The default value is WIFI_COUNTRY_CN
*
* @param wifi_country_t country : country type
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_country(wifi_country_t country);
/**
* @brief Get country code
*
* @param wifi_country_t country : store current country
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_country(wifi_country_t *country);
/**
* @brief Set MAC address of the ESP32 WiFi station or the soft-AP interface.
*
* @attention 1. This API can only be called when the interface is disabled
* @attention 2. ESP32 soft-AP and station have different MAC addresses, do not set them to be the same.
* - The bit0 of the first byte of ESP32 MAC address can not be 1. For example, the MAC address
* can set to be "1a:XX:XX:XX:XX:XX", but can not be "15:XX:XX:XX:XX:XX".
*
* @param wifi_interface_t ifx : interface
* @param uint8 mac[6]: the MAC address.
*
* @return true : succeed
* @return false : fail
*/
esp_err_t esp_wifi_set_mac(wifi_interface_t ifx, uint8_t mac[6]);
/**
* @brief Get mac of specified interface
*
* @param uint8_t mac[6] : store mac of this interface ifx
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_mac(wifi_interface_t ifx, uint8_t mac[6]);
/**
* @brief The RX callback function in the promiscuous mode.
*
* Each time a packet is received, the callback function will be called.
*
* @param uint8 *buf : the data received
* @param uint16 len : data length
*
* @return ESP_OK : succeed
* @return others : fail
*/
typedef void (* wifi_promiscuous_cb_t)(void *buf, uint16_t len);
/**
* @brief Register the RX callback function in the promiscuous mode.
*
* Each time a packet is received, the registered callback function will be called.
*
* @param wifi_promiscuous_cb_t cb : callback
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_promiscuous_rx_cb(wifi_promiscuous_cb_t cb);
/**
* @brief Enable the promiscuous mode.
*
* @param uint8 promiscuous : 0 - disable / 1 - enable
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_promiscuous(uint8_t enable);
/**
* @brief Get the promiscuous mode.
*
* @param uint8 *enable : store the current status of promiscuous mode
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_promiscuous(uint8_t *enable);
typedef struct {
@ -217,12 +534,35 @@ typedef struct {
} wifi_sta_config_t;
typedef union {
wifi_ap_config_t ap;
wifi_sta_config_t sta;
wifi_ap_config_t ap; /**< configuration of AP */
wifi_sta_config_t sta; /**< configuration of STA */
} wifi_config_t;
/**
* @brief Set the configuration of the ESP32 STA or AP
*
* @attention 1. This api can be called only when specified interface is enabled, otherwise, API fail
* @attention 2. For sta configuration, bssid_set needs to be 0; and it needs to be 1 only when users need to check the MAC address of the AP.
* @attention 3. ESP32 is limited to only one channel, so when in the soft-AP+station mode, the soft-AP will adjust its channel automatically to be the same as
* the channel of the ESP32 station.
*
* @param wifi_interface_t ifx : interface
* @param wifi_config_t *conf : sta or ap configuration
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_config(wifi_interface_t ifx, wifi_config_t *conf);
/**
* @brief Get configuration of specified interface
*
* @param wifi_interface_t ifx : interface
* @param wifi_config_t *conf : sta or ap configuration
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_config(wifi_interface_t ifx, wifi_config_t *conf);
struct station_info {
@ -230,23 +570,79 @@ struct station_info {
uint8_t bssid[6];
};
/**
* @brief Get STAs associated with soft-AP
*
* @attention SSC only API
*
* @param struct station_info **station : sta list
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_station_list(struct station_info **station);
esp_err_t esp_wifi_free_station_list(void);
typedef enum {
WIFI_STORAGE_FLASH,
WIFI_STORAGE_RAM,
WIFI_STORAGE_FLASH, /**< all configuration will strore in both memory and flash */
WIFI_STORAGE_RAM, /**< all configuration will only store in the memory */
} wifi_storage_t;
/**
* @brief Set the wifi API configuration storage type
*
* @attention 1. The default value is WIFI_STORAGE_FLASH
*
* @param wifi_storage_t storage : storage type
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_storage(wifi_storage_t storage);
/**
* @brief Set the wifi API configuration storage type
*
* Each time the wifi need to forward the packets to high layer, the callback function will be called
*
*/
typedef esp_err_t (*wifi_rxcb_t)(void *buffer, uint16_t len, void* eb);
/**
* @brief Set the wifi rx callback
*
* @attention 1. Currently we support only one rx callback for each interface
*
* @param wifi_interface_t ifx : interface
* @param wifi_rxcb_t fn : wifi rx callback
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_reg_rxcb(wifi_interface_t ifx, wifi_rxcb_t fn);
/**
* @brief Set auto connect
* The default value is true
*
* @attention 1.
*
* @param bool en : true - enable auto connect / false - disable auto connect
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_set_auto_connect(bool en);
/**
* @brief Get the auto connect flag
*
* @param bool *en : store current auto connect configuration
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_wifi_get_auto_connect(bool *en);
#ifdef __cplusplus