以下代码如何用GET_PORT()定义成一个宏?
unsigned char t;
t = PINA;
s_port |= ((int)t&0x00ff);
t = PINE;
s_port |= (((int)t&0x0007) << 8);
t = PINC;
s_port |= ((int)(t&(BIT(7))) << 4);
s_port |= ((int)(t&(BIT(6))) << 6);
s_port |= ((int)(t&(BIT(5))) << 8);
s_port |= ((int)(t&(BIT(4))) << 10);
s_port |= ((int)(t&(BIT(3))) << 12); |
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楼主
