L138板子在uboot模式下如何加载usb设置
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我的开发板子是L138的,上面有两个usb端口是usb1.1和usb2.0 我想实现在uboot模式下可以从u盘传输文件到板子 我在/include/configs/da850evm.h 设置了 #define CONFIG_USB_DA8XX /* Platform hookup to MUSB controller */ #define CONFIG_MUSB_HCD #define CONFIG_CMD_USB /* inclue support for usb */ #define CONFIG_USB_STORAGE /* MSC class support */ #define CONFIG_CMD_STORAGE /* inclue support for usb */ #define CONFIG_CMD_FAT /* inclue support for FAT/storage*/ #define CONFIG_DOS_PARTITION /* inclue support for FAT/storage*/ #define CONFIG_SUPPORT_VFAT //使能FAT32文件系统的支持 #define CONFIG_SYS_DEVICE_DEREGISTER #define LITTLEENDIAN //定义数据为小端模式
但是当我用串口输入"usb start"时,并没有找到usb设备和存储u盘,结果是: usb start (Re)start USB... USB: scanning bus for devices... New Device 0 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x40 usb_new_device: usb_get_descriptor() failed No USB Device found scanning bus for storage devices... 0 Storage Device(s) found 请求高手指点,我是不是还有一些宏或者什么没有声明?谢谢!
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