iMX6 Rex Wireless

On this page PCIe card functionality is shown. Both Bluetooth and WiFi operations are tested using dual band Intel AC 3160 wireless card. Mini PCI Express slot must provide PCIe and USB signals to support all the features.

RF enable

root@imx6-rexultra:~# rfkill list
0: hci0: bluetooth
        Soft blocked: yes
        Hard blocked: no
1: phy0: wlan
        Soft blocked: yes
        Hard blocked: no
root@imx6-rexultra:~# rfkill unblock bluetooth
root@imx6-rexultra:~# rfkill unblock wlan

Wireless LAN

List PCIe bus and connected devices

root@imx6-rexultra:~# lspci
00:00.0 PCI bridge: Synopsys, Inc. Device abcd (rev 01)
01:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)

Kernel log

root@imx6-rexultra:~# dmesg -t | grep -i iwl
iwlwifi 0000:01:00.0: enabling device (0140 -> 0142)
iwlwifi 0000:01:00.0: loaded firmware version 25.30.13.0 op_mode iwlmvm
iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 3160, REV=0x164
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

Network scanning

root@imx6-rexultra:~# rfkill unblock wlan
root@imx6-rexultra:~# ip link set wlan0 up
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
root@imx6-rexultra:~# iw dev wlan0 scan
BSS d4:ca:6d:52:74:e1(on wlan0)
        TSF: 292600224389 usec (3d, 09:16:40)
        freq: 2412
        beacon interval: 100 TUs
        capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
        signal: -48.00 dBm
        last seen: 0 ms ago
        SSID: Test
        Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 
        DS Parameter set: channel 1
        ERP: <no flags>
        HT capabilities:
                Capabilities: 0x100c
                        HT20
                        SM Power Save disabled
                        No RX STBC
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: No restriction (0x00)
                HT RX MCS rate indexes supported: 0-15
                HT TX MCS rate indexes are undefined
        RSN:     * Version: 1
                 * Group cipher: CCMP
                 * Pairwise ciphers: CCMP
                 * Authentication suites: PSK
                 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
        Extended supported rates: 24.0 36.0 48.0 54.0 
        HT operation:
                 * primary channel: 1
                 * secondary channel offset: no secondary
                 * STA channel width: 20 MHz
                 * RIFS: 0
                 * HT protection: no
                 * non-GF present: 0
                 * OBSS non-GF present: 0
                 * dual beacon: 0
                 * dual CTS protection: 0
                 * STBC beacon: 0
                 * L-SIG TXOP Prot: 0
                 * PCO active: 0
                 * PCO phase: 0
        WMM:     * Parameter version 1
                 * BE: CW 15-1023, AIFSN 3
                 * BK: CW 15-1023, AIFSN 7
                 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
                 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec

Establishing connection and ping test

root@imx6-rexultra:~# rfkill unblock wlan
root@imx6-rexultra:~# ip link set wlan0 up
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
root@imx6-rexultra:~# wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
Successfully initialized wpa_supplicant
root@imx6-rexultra:~# wpa_cli
wpa_cli v2.5
Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi> and contributors

This software may be distributed under the terms of the BSD license.
See README for more details.


Selected interface 'wlan0'

Interactive mode

> scan
OK
<3>CTRL-EVENT-SCAN-STARTED 
<3>CTRL-EVENT-SCAN-RESULTS 
> scan_result
bssid / frequency / signal level / flags / ssid
d4:ca:6d:52:74:e1       2412    -43     [WPA2-PSK-CCMP][ESS]    Test
> add_network
0
> set_network 0 ssid "Test"
OK
> set_network 0 psk "testpassword"
OK
> enable_network 0
OK
<3>CTRL-EVENT-SCAN-STARTED 
<3>CTRL-EVENT-SCAN-RESULTS 
wlan0: authenticate with d4:ca:6d:52:74:e1
<3>SME: Trying to authenticate with d4:ca:6d:52:74:e1 (SSID='Test' freq=2412 MHz)
wlan0: authenticated
<3>Trying to associate with d4:ca:6d:52:74:e1 (SSID='Test' freq=2412 MHz)
wlan0: RX AssocResp from d4:ca:6d:52:74:e1 (capab=0x431 status=0 aid=3)
wlan0: associated
<3>Associated with d4:ca:6d:52:74:e1
<3>WPA: Key negotiation completed with d4:ca:6d:52:74:e1 [PTK=CCMP GTK=CCMP]
<3>CTRL-EVENT-CONNECTED - Connection to d4:ca:6d:52:74:e1 completed [id=0 id_str=]
> status
bssid=d4:ca:6d:52:74:e1
freq=2412
ssid=Stud2
id=0
mode=station
pairwise_cipher=CCMP
group_cipher=CCMP
key_mgmt=WPA2-PSK
wpa_state=COMPLETED
address=00:1e:64:d0:9c:38
uuid=fa260ade-5597-5cf0-af20-ad9392282172
> save_config
OK
> quit

root@imx6-rexultra:~# udhcpc -i wlan0 
udhcpc (v1.24.1) started
Sending discover...
Sending select for 192.168.100.16...
Lease of 192.168.100.16 obtained, lease time 86400
/etc/udhcpc.d/50default: Adding DNS 192.168.100.252

root@imx6-rexultra:~# ping www.google.com
PING www.google.com (216.58.214.196) 56(84) bytes of data.
64 bytes from bud02s23-in-f4.1e100.net (216.58.214.196): icmp_seq=1 ttl=49 time=17.0 ms

Bluetooth

List USB bus and devices

root@imx6-rexultra:~# lsusb
Bus 001 Device 004: ID 8087:07dc  
Bus 001 Device 002: ID 0424:2514  
Bus 001 Device 001: ID 1d6b:0002

Kernel log

root@imx6-rexultra:~# dmesg -t | grep -i hci0     
Bluetooth: hci0: read Intel version: 3707100100012d0d00
bluetooth hci0: Direct firmware load for intel/ibt-hw-37.7.10-fw-1.0.1.2d.d.bseq failed with error -2
bluetooth hci0: Falling back to user helper
Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.0.1.2d.d.bseq
Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated

List Bluetooth configuration

root@imx6-rexultra:~# hciconfig -a hci0
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 00:1E:64:D0:9C:3C  ACL MTU: 1021:5  SCO MTU: 96:6
        DOWN 
        RX bytes:1181 acl:0 sco:0 events:129 errors:0
        TX bytes:21557 acl:0 sco:0 commands:128 errors:0
        Features: 0xff 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH HOLD SNIFF 
        Link mode: SLAVE ACCEPT

Connect to Bluetooth device

root@imx6-rexultra:~# rfkill unblock bluetooth
root@imx6-rexultra:~# hciconfig hci0 up
root@imx6-rexultra:~# hciconfig -a hci0
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 00:1E:64:D0:9C:3C  ACL MTU: 1021:5  SCO MTU: 96:6
        UP RUNNING 
        RX bytes:1755 acl:0 sco:0 events:159 errors:0
        TX bytes:21925 acl:0 sco:0 commands:158 errors:0
        Features: 0xff 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH HOLD SNIFF 
        Link mode: SLAVE ACCEPT 
        Name: 'Bluemoon Universal Bluetooth Host Controller'
        Class: 0x001f00
        Service Classes: Unspecified
        Device Class: Invalid Device Class!
        HCI Version: 4.0 (0x6)  Revision: 0xf00
        LMP Version: 4.0 (0x6)  Subversion: 0xf00
        Manufacturer: Intel Corp. (2)

root@imx6-rexultra:~# /usr/libexec/bluetooth/bluetoothd &
root@imx6-rexultra:~# bluetoothctl
[NEW] Controller 00:1E:64:D0:9C:3C BlueZ 5.37 [default]
[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 00:1E:64:D0:9C:3C Discoverable: no
[bluetooth]# agent on
Agent registered
[bluetooth]# scan on
Discovery started
[CHG] Controller 00:1E:64:D0:9C:3C Discovering: yes
[NEW] Device 2C:54:CF:3D:30:12 G2 mini
[bluetooth]# pair 2C:54:CF:3D:30:12
Attempting to pair with 2C:54:CF:3D:30:12
[CHG] Device 2C:54:CF:3D:30:12 Connected: yes
Request confirmation
[agent] Confirm passkey 897940 (yes/no): yes
[CHG] Device 2C:54:CF:3D:30:12 Modalias: bluetooth:v00C4p13A1d1000
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001105-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001106-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 0000110a-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001112-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001116-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 0000111f-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 0000112d-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 0000112f-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001132-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Device 2C:54:CF:3D:30:12 Paired: yes
Pairing successful
[CHG] Device 2C:54:CF:3D:30:12 Connected: no
[bluetooth]# scan off
[CHG] Device 2C:54:CF:3D:30:12 RSSI is nil
[CHG] Controller 00:1E:64:D0:9C:3C Discovering: no
Discovery stopped
[bluetooth]# d
Invalid command
[bluetooth]# devices
Device 2C:54:CF:3D:30:12 G2 mini
[bluetooth]# connect 2C:54:CF:3D:30:12
Attempting to connect to 2C:54:CF:3D:30:12
[CHG] Device 2C:54:CF:3D:30:12 Connected: yes
Connection successful
[G2 mini]# info 2C:54:CF:3D:30:12
Device 2C:54:CF:3D:30:12
        Name: G2 mini
        Alias: G2 mini
        Class: 0x5a020c
        Icon: phone
        Paired: yes
        Trusted: no
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
        UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: NAP                       (00001116-0000-1000-8000-00805f9b34fb)
        UUID: Handsfree Audio Gateway   (0000111f-0000-1000-8000-00805f9b34fb)
        UUID: SIM Access                (0000112d-0000-1000-8000-00805f9b34fb)
        UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
        UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        Modalias: bluetooth:v00C4p13A1d1000
[G2 mini]# quit
Agent unregistered
[DEL] Controller 00:1E:64:D0:9C:3C BlueZ 5.37 [default]