I want to connect TCA6408 IO Expander and get key input to my embedded system. I am trying with SABRELite (iMX6Q) Boad and my development environment is LTIB (L3.0.35_4.1.0_130816_source.tar.gz)I want to connect TCA6408 IO Expander and get k
阅读背景：
I2C设备驱动程序错误[TCA6408 I/O扩展器]
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