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将LCD直接连接到底板上启动 为什么lcd屏不显示?



现在我使用AM335x General Purpose EVM 评估板,我直接用SD卡在baseboard上启动系统,串口显示启动成功,但是我把LCD屏连接到baseboard上,直到系统启动完毕,lcd一直不显示,但是lcd板上的电源灯是点亮的,请问这是为什么?什么原因呢? 期待您的尽快答复。谢谢!!!