Android12 展锐sl8541平台USB转串口(pl2303、ch343)以及APP访问权限
1、硬件电路typeCUSB口ID引脚是连接CPU的KEYIN2/EXTINT4/GPIO126引脚,需配置该引脚的pinmap2、配置ID引脚Pinmapbsp/bootloader/u-boot15/board/spreadtrum/sl8541e_3h10_32b/pinmap-sp9832e_32b.c注:BITS_PIN_AF(1)}为中断模式{REG_PIN_KEYIN2,BITS_P