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[硬件开发] arm7 4*4键盘驱动demo
说明: arm7, 4*4键盘驱动demo rPDATG |= (0x1 << 4); //high rPDATG |= (0x1 << 5); //high rPDATG |= (0x1 << 6); //high rPDATG |= (0x1 << 7); //high rPDATF |= (0x1 << 4); //high rPDATF |= (0x1 << 3); //high rPDATF |= (0x1 <&l<anron> 上传 | 大小:3kb