短路SPI 1、2腳位
$ lsusb Bus 003 Device 118: ID 1f3a:efe8 Allwinner Technology sunxi SoC OTG connector in FEL/flashing mode $ xfel version AWUSBFEX ID=0x00185900(R528/T113) dflag=0x44 dlength=0x08 scratchpad=0x00045000
