请问 P1DIR的物理地址是固定的吗,0x0204怎么换算成二进制,是多少啊? P2DIR和P2OUT的物理地址是多少呢?
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0x表示是十六进制,十六进制的每一位展开为4位2进制,按位按照8、4、2、1去顺序的展开就可以啦。
所以,0x0204 换成二进制是0B0000 0010 0000 0100。