【实验平台】
 主机:Ubantu10.10
目标板:fsc100
目标内核版本:2.6.35
【实验步骤】
1、实验代码拷贝到ubuntu主机目录下,编译且加载
2、目标板与pc用USB接口线连接,目标板上电后,进到u-boot控制台,并运行dnw
3、启用虚拟机的的USB设备
在ubutn命令终端下可以看到如下信息
# lsusb -v
Bus 001 Device 002: ID 04e8:1234 Samsung Electronics Co., Ltd
Device Descriptor:
 bLength 18
 bDescriptorType 1
 bcdUSB 2.00
 bDeviceClass 255 Vendor Specific Class
 bDeviceSubClass 0
 bDeviceProtocol 0
bMaxPacketSize0 64
 idVendor 0x04e8 Samsung Electronics Co., Ltd
 idProduct 0x1234
 bcdDevice 1.00
 iManufacturer 1 System MCU
 iProduct 2 SEC S3C6400X Test B/D
 iSerial 0
 bNumConfigurations 1
 Configuration Descriptor:
 bLength 9
 bDescriptorType 2
 wTotalLength 32
 bNumInterfaces 1
 bConfigurationValue 1
 iConfiguration 0
 bmAttributes 0xc0
 Self Powered
 MaxPower 50mA
 Interface Descriptor:
 bLength 9
 bDescriptorType 4
 bInterfaceNumber 0
 bAlternateSetting 0
 bNumEndpoints 2
 bInterfaceClass 255 Vendor Specific Class
 bInterfaceSubClass 0
 bInterfaceProtocol 0
 iInterface 0
 Endpoint Descriptor:
 bLength 7
 bDescriptorType 5
 bEndpointAddress 0x81 EP 1 IN
 bmAttributes 2
 Transfer Type Bulk
 Synch Type None
 Usage Type Data
 wMaxPacketSize 0x0200 1x 512 bytes
 bInterval 0
 Endpoint Descriptor:
 bLength 7
 bDescriptorType 5
 bEndpointAddress 0x02 EP 2 OUT
 bmAttributes 2
 Transfer Type Bulk
 Synch Type None
 Usage Type Data
 wMaxPacketSize 0x0200 1x 512 bytes
 bInterval 0
4、在pc主机下编译应用程序并运行
# gcc -o test usb_app.c
# ./test zImage
5、在目标板u-boot控制台下运行
U-boot版本为:1.3.4
# bootm 20008000
U-boot版本为:2010.09
# go 20008000
是不是非常棒,很喜欢的一个应用。