硬件平台：飞思卡尔MX258开发板

操作系统：Linux2.6.31

WIFI： RT2860 USB WIFI模组

交叉编译环境：gcc version 4.1.2

调试步骤：

第一步：测试USB　HOST接口

在menuconfig中将USB HOST设置为内核模式：

重新编译内核后启动开发板，插入U盘并挂载：

mount /dev/sda1 /tmp

ls /tmp

可以看到U盘已经正常挂载，测试USB　HOST OK!

第二步：网上下载雷凌最新的USB驱动，

2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO.tar.bz2

拷备到Linux目录并解压：

tar jxf 2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO.tar.bz2

由于上面名字很长，可以修改为简短的名字：

mv 2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO RT3070_Linux_STA

第三步：进入RT3070_Linux_STA目录，看到有一个README_STA_usb文件，里面介绍了如何加载该驱动：

=======================================================================

Build Instructions:

====================

1> $tar -xvzf DPB_RT2870_Linux_STA_x.x.x.x.tgz

go to "./DPB_RT2870_Linux_STA_x.x.x.x" directory.

2> In Makefile

set the "MODE = STA" in Makefile and chose the TARGET to Linux by set "TARGET = LINUX"

define the linux kernel source include file path LINUX_SRC

modify to meet your need.

3> In os/linux/config.mk

define the GCC and LD of the target machine

define the compiler flags CFLAGS

modify to meet your need.

** Build for being controlled by NetworkManager or wpa_supplicant wext functions

Please set 'HAS_WPA_SUPPLICANT=y' and 'HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=y'.

=> #>cd wpa_supplicant-x.x

=> #>./wpa_supplicant -Dwext -ira0 -c wpa_supplicant.conf -d

** Build for being controlled by WpaSupplicant with Ralink Driver

Please set 'HAS_WPA_SUPPLICANT=y' and 'HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=n'.

=> #>cd wpa_supplicant-0.5.7

=> #>./wpa_supplicant -Dralink -ira0 -c wpa_supplicant.conf -d

4> $make

# compile driver source code

# To fix "error: too few arguments to function ˉiwe_stream_add_event"

=> $patch -i os/linux/sta_ioctl.c.patch os/linux/sta_ioctl.c

5> $cp RT2870STA.dat /etc/Wireless/RT2870STA/RT2870STA.dat

6> load driver, go to "os/linux/" directory.

#[kernel 2.4]

# $/sbin/insmod rt2870sta.o

# $/sbin/ifconfig ra0 inet YOUR_IP up

#[kernel 2.6]

# $/sbin/insmod rt2870sta.ko

# $/sbin/ifconfig ra0 inet YOUR_IP up

7> unload driver

$/sbin/ifconfig ra0 down

$/sbin/rmmod rt2870sta

这里go to "./DPB_RT2870_Linux_STA_x.x.x.x" directory.即我们刚解压的RT3070_Linux_STA目录。修改该目录下的makefile文件，以下只给出修改部分：

#PLATFORM = PC

PLATFORM = RALINK_2880

ifeq ($(PLATFORM), RALINK_2880)

LINUX_SRC = /home/lqm/share/G360/kernel_kfb

CROSS_COMPILE = /opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-

endif

ifeq ($(RT28xx_MODE),APSTA)

cp -f $(RT28xx_DIR)/os/linux/rt$(CHIPSET)apsta.ko /tftpboot

ifeq ($(OSABL),YES)

cp -f $(RT28xx_DIR)/os/linux/rtutil$(CHIPSET)apsta.ko /tftpboot

cp -f $(RT28xx_DIR)/os/linux/rtnet$(CHIPSET)apsta.ko /tftpboot

endif

else

cp -f $(RT28xx_DIR)/os/linux/rt$(CHIPSET)sta.ko /home/lqm/share/NFS/tmp

注意，虽然我们使用的是2860模组，我们这里仍然可以定义PLATFORM为RALINK_2880，只要后面对应的编译环境正确就可以了。LINUX_SRC表示内核的目录，CORSS_COMPILE为交叉编译环境，最末一行为编译完后将生成的KO文件复制到NFS文件系统的tmp目录。

第四步：按照第三步README_STA_usb给出的提示，修改config.mk文件，这里也只给出修改部分：

# Support Wpa_Supplicant

HAS_WPA_SUPPLICANT=y

# Support Native WpaSupplicant for Network Maganger