ARM开发板加载Realtek-8188CUS USB无线网卡(一)

平台参数：
内核： Linux 3.6
文件系统：Busybox-1.20.2
硬件参数：S3C2416

在ARM-Linux支持并自动挂载U盘中已经验证好，USB接口是完全正常的，所以不用担心硬件上的故障。

一、引子

BZ使用的是“迅捷”(FAST)的一个USB接口无线网卡，型号FAST FW150US，关于这个网卡的故事、、、

实物如图：

通过Linux的lsusb命令可以查看它内部使用的是Realtek 8188CUS芯片：

二、正式开场

1、首先在Realtek官网下载对应的驱动源码包：

通过阅读document\Quick_Start_Guide_for_Driver_Compilation_and_Installation.pdf文档我们知道，驱动源码在driver目录下，根据硬件平台，修改Makefile：

a、平台选择：CONFIG_PLATFORM_I386_PC = n        CONFIG_PLATFORM_ARM_S3C2K4 = y

b、修改使用的编译工具、对应的内核目录：

ifeq ($(CONFIG_PLATFORM_ARM_S3C2K4), y)
EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
ARCH := arm
CROSS_COMPILE := /usr/local/arm/4.2.2-eabi/usr/bin/arm-linux-
# KVER  := 2.6.24.7_$(ARCH)
KSRC := /home/uni/workspace/20141107_yisuo/linux_3_6/linux-3.6
endif

c、PS：先把节能功能取消了CONFIG_POWER_SAVING = n

配置好上述选项，make后就得到驱动模块：8192cu.ko

2、模块加载：

上传该文件到文件系统，为了自动加载该模块，把它添加到Linux的启动脚本里：

/etc/init.d/rcS：
insmod  /lib/modules/8192cu.ko

这样，在系统启动的过程中，就可以看到无线网卡识别情况：

[    9.040000] rtl8192cu driver version=v4.0.2_9000.20130911
[    9.040000] build time: Apr  7 2015 10:42:16
[    9.050000]
[    9.050000] usb_endpoint_descriptor(0):
[    9.050000] bLength=7
[    9.060000] bDescriptorType=5
[    9.060000] bEndpointAddress=81
[    9.060000] wMaxPacketSize=40
[    9.070000] bInterval=0
[    9.070000] RT_usb_endpoint_is_bulk_in = 1
[    9.070000]
[    9.070000] usb_endpoint_descriptor(1):
[    9.080000] bLength=7
[    9.080000] bDescriptorType=5
[    9.080000] bEndpointAddress=2
[    9.090000] wMaxPacketSize=40
[    9.090000] bInterval=0
[    9.090000] RT_usb_endpoint_is_bulk_out = 2
[    9.100000]
[    9.100000] usb_endpoint_descriptor(2):
[    9.100000] bLength=7
[    9.100000] bDescriptorType=5
[    9.110000] bEndpointAddress=3
[    9.110000] wMaxPacketSize=40
[    9.110000] bInterval=0
[    9.110000] RT_usb_endpoint_is_bulk_out = 3
[    9.120000]
[    9.120000] usb_endpoint_descriptor(3):
[    9.120000] bLength=7
[    9.130000] bDescriptorType=5
[    9.130000] bEndpointAddress=84
[    9.130000] wMaxPacketSize=40
[    9.130000] bInterval=1
[    9.135000] RT_usb_endpoint_is_int_in = 4, Interval = 1
[    9.140000] nr_endpoint=4, in_num=2, out_num=2
[    9.140000]
[    9.145000] NON USB_SPEED_HIGH
[    9.150000] CHIP TYPE: RTL8188C_8192C
[    9.150000] register rtw_netdev_ops to netdev_ops
[    9.160000] Chip Version ID: VERSION_NORMAL_TSMC_CHIP_88C.
[    9.165000] RF_Type is 3!!
[    9.170000] EEPROM type is E-FUSE
[    9.170000] ====> ReadAdapterInfo8192C
[    9.175000] Boot from EFUSE, Autoload OK !
[   11.320000] EEPROMVID = 0x0bda
[   11.320000] EEPROMPID = 0x8176
[   11.320000] EEPROMCustomerID : 0x00
[   11.325000] EEPROMSubCustomerID: 0x00
[   11.325000] RT_CustomerID: 0x00
[   11.330000] _ReadMACAddress MAC Address from EFUSE = 6c:e8:73:c7:6f:92
[   11.335000] EEPROMRegulatory = 0x0
[   11.340000] _ReadBoardType(0)
[   11.340000] BT Coexistance = disable
[   11.345000] mlmepriv.ChannelPlan = 0x02
[   11.350000] _ReadPSSetting...bHWPwrPindetect(0)-bHWPowerdown(0) ,bSupportRemoteWakeup(0)
[   11.355000] ### PS params=>  power_mgnt(0),usbss_enable(0) ###
[   11.360000] ### AntDivCfg(0)
[   11.360000] readAdapterInfo_8192CU(): REPLACEMENT = 1
[   11.365000] <==== ReadAdapterInfo8192C in 2195 ms
[   11.380000] rtw_macaddr_cfg MAC Address  = 6c:e8:73:c7:6f:92
[   11.380000] bDriverStopped:1, bSurpriseRemoved:0, bup:0, hw_init_completed:0
[   11.430000] _rtw_drv_register_netdev, MAC Address (if1) = 6c:e8:73:c7:6f:92
[   11.460000] usbcore: registered new interface driver rtl8192cu