我在虚拟机的UBUNTU下使用的minicom接收信息,上电每次都能进入UBOOT ,但是只要选择某个选项就提示插入USB OTG电缆,我感觉还是从eMCC启动的UBOOT,而不是从SD卡启动的。我看手册从eMCC启动和SD卡启动硬件跳线设置都是一样的。我制作SD启动卡都是按照手册来的检查了几遍应该没问题。我现在困惑就是到底是启动卡没制作成功还是什么原因? 还有就是每次启动的uBoot标题都是写的
##### Boot for E8 Main Menu #####
##### EmbedSky USB download mode #####
[1] Download u-boot.bin to board
[2] Download Eboot (eboot.nb0) to board
[3] Download Linux Kernel (zImage.bin) to board
[4] Download LOGO Picture (logo.bin) to board
[5] Download RAMDISK image (root.bin) to board
[6] Download EXT4FS image (root.ex4) to board
[7] Download Program to SDRAM and Run it
[8] Boot the system
[9] Create partition
[0] Set the boot parameters
[b] Enter Recovery mode
[h] system halt
[n] Enter TFTP download mode menu
[t] Test Linux Image (zImage)
Enter your selection: 1
Insert a OTG cable into the connector!