本文详细介绍了如何在PCDuino上配置RT5370softAP驱动，包括内核配置、驱动安装及调试等步骤。此外还介绍了如何设置PCDuino作为无线热点共享网络。
http://my.oschina.net/u/994181/blog/151507
1，下载工具 apt-get install git git-core u-boot-tools lib ncurses 2, 下载内核
cd /lib/modules/3.4.29+mkdir build
cd build
sudo git clone https://github.com/pcduino/kernel/blob/master/patch/linux-sunxi/
sudo git clone https://github.com/pcduino/kernel/blob/master/patch/linux-sunxi/arch/arm/configs/sun4i_defconfig
cp sun4i_defconfig .config
3, 配置内核
make menuconfig
这里会进入一个内核配置界面，你可以在里面选上自己需要的配置。
或者你可以直接修改.config文件，但是由于.config里面的选项依赖很复杂，推荐你使用make menuconfig在图形化的界面下修改
4，安装内核make
这里与遇到一个错误，说什么有个文件不存在，这个需要运行make menuconfig，在general 里面把包含的那个文件去掉
make modules #编译内核模块
make modules_install #安装内核模块
make uImage
mount /dev/nanda /boot
sudo cp arch/arm/boot/uImage /boot -f
reboot
重启之后，就是你修改过的内核。
这里有一点需要注意，由于pcduino的硬盘有限，推荐你使用SD卡，或者使用nfs网络文件系统，把文件挂载到build文件夹下。
出自：http://www.pcduino.org/forum.php?
pcduino上移植rt5370 softAP驱动
http://my.oschina.net/pcduino/blog/141939
先做一些说明：
1，现在新版的pcDuino上面已经自带了rt5370驱动，但是那个是rt5370sta;只支持ad-hoc（点对点）；
2，雷凌公司官网上并不提供开源的rt5370驱动，但是在Linux3.0以后的内核中已经集成了rt5xxx的驱动；
通过以上说明知道，这里需要配置内核让内核支持rt5370 softAP驱动，然后设置系统不让系统自动加载rt5370sta驱动。
内核配置过程如下：
/home/pillar/WORK/kernel/build/sun4i_defconfig-linux
在这个目录下执行：
make CROSS_COMPILE=arm-linux-gnueabihf- ARCH=arm menuconfig
在菜单选项中选择
Device Drivers —>
[*] Network device support —>
[*] Wireless LAN —>
<M> Ralink driver support —>
这里可以看到rt53xx系列了，选上就行了。
退出之后按照我前一博客所写的步骤实现，内核的烧写。
然后把/lib/modules/3.4.29+/里面的内容换一下，换成现在最新的。成功之后，修改
vim /etc/modules里面的内容，用#注释掉rt5370sta。完成之后重启reboot.
重启之后。
root@ubuntu :/home/ubuntu# lsmod
Module Size Used by
rt5370sta 617141 0
8192cu 537048 0
rt2800usb 11321 0
rt2800lib 40721 1 rt2800usb
crc_ccitt 1094 1 rt2800lib
rt2x00usb 7245 1 rt2800usb
rt2x00lib 31040 3 rt2800usb,rt2800lib,rt2x00usb
mali_drm 2087 1
drm 157060 2 mali_drm
mac80211 257514 3 rt2800lib,rt2x00usb,rt2x00lib
cfg80211 150671 2 rt2x00lib,mac80211
mali 91258 0
disp_ump 823 0
ump 44002 4 mali,disp_ump
可以用lsmod查看内核加载驱动信息。
由于我们在内核选择的是一个系列，因此在我们使用的时候需要进行一些设置。
sudo modprobe rt2800usb
sudo -s
echo 148F 5370 > /sys/bus/usb/drivers/rt2800usb/new_id
通过以上命令就可以了，这时候执行ifconfig wlan3 up ，它会提示错误。说什么phy0错误。
这里是因为我们没有把USB wifi的固件放到指定地方。通过命令modinfo rt2800usb
root@ubuntu :/home/ubuntu# modinfo rt2800usb
filename: /lib/modules/3.4.29+/kernel/drivers/net/wireless/rt2x00/rt2800usb.ko
license: GPL
firmware: rt2870.bin
description: Ralink RT2800 USB Wireless LAN driver.
version: 2.3.0
author: http://rt2x00.serialmonkey.com
srcversion: 86EB9107CC5610BFA893CE6
我们可以知道固件的名字是rt2870.bin。
这个固件我们需要到网上去搜，可以在腾达的官网上找到，因为腾达有一款USB WIFI的里面用到的芯片就是RT5370,下载他们公司提供的驱动，在common文件夹里面可以看到。
下载到固件之后，我们需要把固件放到指定位置，这个位置/lib/firmware/ ；
操作执行完之后再执行ifconfig wlan0 up就可以看到pcduino上搜索到的wifi信号。看到有些玩家已经介绍了怎么在pcduino上连接wifi.这里我就不在多说了。
这里介绍一些查看调试无线驱动的命令。
1，iwconfig
root@ubuntu :/home/ubuntu# iwconfig
mon.wlan3 IEEE 802.11bgn Mode:Monitor Frequency:2.462 GHz Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
lo no wireless extensions.
tunl0 no wireless extensions.
sit0 no wireless extensions.
eth0 no wireless extensions.
wlan3 IEEE 802.11bgn Mode:Master Frequency:2.462 GHz Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
这个命令用来专门查看当前的无线网络状态，可以看到mode已经是Master模式，而且出现mon.wlan3，这说明当前是主动模式，而且正在向外发送wifi.
2，iw
这个命令需要安装sudo apt -get install iw
执行iw list
root@ubuntu :/home/ubuntu# iw list
Wiphy phy3
Band 1:
Capabilities: 0×172
HT20/HT40
Static SM Power Save
RX Greenfield
RX HT20 SGI
RX HT40 SGI
RX STBC 1-stream
Max AMSDU length: 3839 bytes
No DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0×003)
Minimum RX AMPDU time spacing: 2 usec (0×04)
HT RX MCS rate indexes supported: 0-7, 32
TX unequal modulation not supported
HT TX Max spatial streams: 1
HT TX MCS rate indexes supported may differ
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm) (passive scanning, no IBSS)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (20.0 dBm) (passive scanning, no IBSS)
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps (short preamble supported)
* 5.5 Mbps (short preamble supported)
* 11.0 Mbps (short preamble supported)
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
max # scan SSIDs: 4
max scan IEs length: 2257 bytes
Coverage class: 0 (up to 0m)
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP (00-0f-ac:4)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* WDS
* monitor
* mesh point
software interface modes (can always be added):
* AP/VLAN
* monitor
interface combinations are not supported
Supported commands:
* new_interface
* set_interface
* new_key
* new_beacon
* new_station
* new_mpath
* set_mesh_params
* set_bss
* authenticate
* associate
* deauthenticate
* disassociate
* join_ibss
* join_mesh
* remain_on_channel
* set_tx_bitrate_mask
* action
* frame_wait_cancel
* set_wiphy_netns
* set_channel
* set_wds_peer
* Unknown command (84)
* Unknown command (87)
* Unknown command (85)
* testmode
* connect
* disconnect
……….
可以看到rt5370的一些信息。从中可以看到RT5370是支持AP的。
最后分享一下在pcDuino上可以看到搜索到的无线信号图片。
在pcDuino实现AP--wifi热点共享
http://www.oschina.net/question/1174645_121353
- Networking support --->
- Network packet filtering framework (Netfilter) --->
（重要的选项已标记）
Chain INPUT (policy ACCEPT)
target prot opt source destination
target prot opt source destination
target prot opt source destination
Failed to initialize driver 'nl80211'
compilation terminated.
make: *** [../src/drivers/driver_nl80211.o] Error 1
sudo apt-get install libssl-dev
hostapd v1.0
User space daemon for IEEE 802.11 AP management,
IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
Copyright (c) 2002-2012, Jouni Malinen < j@w1.fi> and contributors
interface=wlan3
driver=nl80211
ssid=China
hw_mode=g
channel=11
dtim_period=1
rts_threshold=2347
fragm_threshold=2346
macaddr_acl=0
auth_algs=1
ieee80211n=0
wpa=2
wpa_passphrase=1234567890
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
random: Trying to read entropy from /dev/random
Configuration file: /etc/hostapd.conf
nl80211: interface wlan3 in phy phy3
rfkill: initial event: idx=0 type=2 op=0 soft=0 hard=0
rfkill: initial event: idx=4 type=1 op=0 soft=0 hard=0
nl80211: Using driver-based off-channel TX
nl80211: Register frame command failed (type=208): ret=-114 (Operation already in progress)
nl80211: Register frame match - hexdump(len=1): 06
nl80211: Failed to register Action frame processing - ignore for now
nl80211: Add own interface ifindex 23
nl80211: Set mode ifindex 23 iftype 3 (AP)
nl80211: Create interface iftype 6 (MONITOR)
Failed to create interface mon.wlan3: -23 (Too many open files in system)
Try to remove and re-create mon.wlan3
nl80211: Remove interface ifindex=37
nl80211: Create interface iftype 6 (MONITOR)
nl80211: New interface mon.wlan3 created: ifindex=38
nl80211: Add own interface ifindex 38
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
nl80211: Regulatory information - country=00
nl80211: 2402-2472 @ 40 MHz
nl80211: 2457-2482 @ 40 MHz
nl80211: 2474-2494 @ 20 MHz
nl80211: 5170-5250 @ 40 MHz
nl80211: 5735-5835 @ 40 MHz
nl80211: Added 802.11b mode based on 802.11g information
Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=13 freq=2472 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=13 freq=2472 MHz max_tx_power=20 dBm
Completing interface initialization
Mode: IEEE 802.11g Channel: 11 Frequency: 2462 MHz
nl80211: Set freq 2462 (ht_enabled=0 sec_channel_offset=0)
RATE[0] rate=10 flags=0x1
RATE[1] rate=20 flags=0x1
RATE[2] rate=55 flags=0x1
RATE[3] rate=110 flags=0x1
RATE[4] rate=60 flags=0x0
RATE[5] rate=90 flags=0x0
RATE[6] rate=120 flags=0x0
RATE[7] rate=180 flags=0x0
RATE[8] rate=240 flags=0x0
RATE[9] rate=360 flags=0x0
RATE[10] rate=480 flags=0x0
RATE[11] rate=540 flags=0x0
Flushing old station entries
Deauthenticate all stations
wpa_driver_nl80211_set_key: ifindex=23 alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=23 alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=23 alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=23 alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
Using interface wlan3 with hwaddr 00:c3:16:a0:03:ca and ssid 'China'
Deriving WPA PSK based on passphrase
SSID - hexdump_ascii(len=5):
43 68 69 6e 61 China
PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
PSK (from passphrase) - hexdump(len=32): [REMOVED]
random: Got 20/20 bytes from /dev/random
Get randomness: len=32 entropy=0
GMK - hexdump(len=32): [REMOVED]
Get randomness: len=32 entropy=0
Key Counter - hexdump(len=32): [REMOVED]
WPA: Delay group state machine start until Beacon frames have been configured
nl80211: Set beacon (beacon_set=0)
WPA: Start group state machine to set initial keys
WPA: group state machine entering state GTK_INIT (VLAN-ID 0)
Get randomness: len=16 entropy=0
GTK - hexdump(len=16): [REMOVED]
WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0)
wpa_driver_nl80211_set_key: ifindex=23 alg=3 addr=0x3b864 key_idx=1 set_tx=1 seq_len=0 key_len=16
broadcast key
wpa_driver_nl80211_set_operstate: operstate 0->1 (UP)
netlink: Operstate: linkmode=-1, operstate=6
wlan3: Setup of interface done.
RTM_NEWLINK: operstate=1 ifi_flags=0x1002 ()
nl80211: Ignore interface down event since interface wlan3 is up
nl80211: Ignore event for foreign ifindex 37
nl80211: Ignore dellink event for foreign ifindex 37
RTM_NEWLINK: operstate=1 ifi_flags=0x1002 ()
nl80211: Ignore interface down event since interface mon.wlan3 is up
RTM_NEWLINK: operstate=1 ifi_flags=0x11043 ([UP][RUNNING][LOWER_UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'mon.wlan3' added
Unknown event 5
RTM_NEWLINK: operstate=1 ifi_flags=0x11043 ([UP][RUNNING][LOWER_UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan3' added
nl80211: if_removed already cleared - ignore event
nl80211: Event message available
nl80211: Delete station c4:6a:b7:69:9c:14
mgmt::deauth cb
Add randomness: count=1 entropy=0
Add randomness: count=2 entropy=1
Add randomness: count=3 entropy=2
Add randomness: count=4 entropy=3
Add randomness: count=5 entropy=4
Add randomness: count=6 entropy=5
Add randomness: count=7 entropy=6
Add randomness: count=8 entropy=7
Add randomness: count=9 entropy=8
Add randomness: count=10 entropy=9
Add randomness: count=11 entropy=10
Add randomness: count=12 entropy=11
Add randomness: count=13 entropy=12
Add randomness: count=14 entropy=13
Add randomness: count=15 entropy=14
{
range 192.168.0.2 192.168.0.10;
option routers 192.168.0.1; #网关，即wlan3的IP地址
option domain-name-servers 8.8.8.8;
}
(注意IP地址)
wlan3 Link encap:Ethernet HWaddr 00:c3:16:a0:03:ca
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2c3:16ff:fea0:3ca/64 Scope
ink
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5862 errors:0 dropped:0 overruns:0 frame:0
TX packets:4221 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1204735 (1.2 MB) TX bytes:907948 (907.9 KB)
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