1. installation

modprobe brcmfmac
source /bin/cid-functions
cid_del_line /etc/modprobe.d/blacklist.conf "blacklist brcmfmac"

2. dhcp client

nmcli device wifi list
IN-USE  BSSID              SSID           MODE   CHAN  RATE        SIGNAL  BARS  SECURITY
        28:EE:52:89:61:78  d01b2          Infra  11    130 Mbit/s  62      ▂▄▆_  --
*       28:EE:52:89:5E:66  d01b2          Infra  6     130 Mbit/s  59      ▂▄▆_  --
        38:35:FB:06:ED:7C  WiFi-2.4-ED76  Infra  11    130 Mbit/s  39      ▂▄__  WPA2
        C0:FF:D4:8D:54:71  NETGEAR95      Infra  12    195 Mbit/s  32      ▂▄__  WPA2
        68:02:B8:D0:22:2C  telenet-0C0FF  Infra  11    195 Mbit/s  29      ▂___  WPA2
 nmcli connection add type "wifi" ifname "wlan0" con-name "wlan0" ssid "d01b2"
# nmcli connection modify "wlan0" wifi-sec.key-mgmt wpa-psk
# nmcli connection modify "wlan0" wifi-sec.psk "d88d88d88"
 nmcli connection up "wlan0"