【BW16】AT指令体验之WIFI

## 连接WiFi ### 01 设置模式 STA 命令： ``AT+WMODE=<MODE>,<save_flash>`` 参数1：``<MODE>``Wi-Fi工作模式(0：未初始化或者关闭Wi-Fi 1：STA 2：AP 3：AP+STA) 参数2：``<save_flash>``是否保存到flash(0：不保存 1：保存) ```c AT+WMODE=1,0 WIFI is already running[AI_FAtWMode()-117]wifi start success OK [MEM] After do cmd, available heap 160064 ``` ### 02 查找WiFi ```c AT+WSCAN +WSCAN:index SSID,CH,SECURITY,RSSI,BSSID 1 wenhou,1,WPA/WPA2 AES,-42,a4:1a:3a:5d:56:08 2 ,1,WPA/WPA2 AES,-44,a6:1a:3a:2d:56:08 3 wh5,153,WPA/WPA2 AES,-48,a4:1a:3a:5d:56:0a 4 ,153,WPA/WPA2 AES,-48,a6:1a:3a:5d:56:08 OK [MEM] After do cmd, available heap 160064 ``` ### 03 连接WiFi 命令： ``AT+WJAP=<ssid>,<pwd>[,<bssid>]`` 参数1：``<ssid>``连接的AP的SSID(最大长度为32字节) 参数2：``<pwd>``连接的AP的密码(最大长度为32字节) 参数3：``<bssid>``连接的AP的BSSID(一般不用) ```c AT+WJAP=wenhou,password [AI_FAtWJAP()-598]Connect to wenhou RTL8721D[Driver]: set ssid [wenhou] RTL8721D[Driver]: rtw_set_wpa_ie[1160]: AuthKeyMgmt = 0x2 RTL8721D[Driver]: rtw_restruct_sec_ie[4279]: no pmksa cached RTL8721D[Driver]: start auth to a4:1a:3a:5d:56:08 RTL8721D[Driver]: auth alg = 2 RTL8721D[Driver]: OnAuthClient:algthm = 0, seq = 2, status = 0, sae_msg_len = 0 RTL8721D[Driver]: auth success, start assoc RTL8721D[Driver]: association success(res=3) RTL8721D[Driver]: ClientSendEAPOL[1650]: no use cache pmksa RTL8721D[Driver]: set pairwise key to hw: alg:4(WEP40-1 WEP104-5 TKIP-2 AES-4) RTL8721D[Driver]: set group key to hw: alg:4(WEP40-1 WEP104-5 TKIP-2 AES-4) keyid:2 [AI_WifiReConnectCallbak()-756](220)wenhou +EVENT:WIFI_CONNECT +EVENT:WIFI_GOT_IP [AI_SocketTTAutoRunThread()-4027]socket auto TT not set Interface 0 IP address : 192.168.1.100 OK [MEM] After do cmd, available heap 152032 ``` ### 04 AT+WAUTOCONN 上电自动重连Wi-Fi 命令： ``AT+WAUTOCONN=<status>`` 参数1：``<status>``0：禁用 1：使能 #### 这四个AT指令挨个填写，就可以实现自动连接WIFI操作

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