SD16A中的差分输入口跟SD16AE不是一一对应的，A2输入:SD16INCTL0 |= SD16INCH_2;SD16AE = SD16AE6 + SD16AE7; //A2输入口为P1.6/P1.7A3输入:SD16INCTL0 |= SD16INCH_3;SD16AE = SD16AE4 + SD16AE5; //A3输入口为P1.4/P1.5A4输入:SD16INCTL0 |= SD16INCH_4;SD16AE = SD16AE2 + SD16AE3; //A4输入口为P1.2/P1.3某大虾的程序如下：这是我写的SD16A驱动程序中通道选择的部分，把司马大侠剩下的几个通道补充完整了，呵呵switch ( channel ){case 0:SD16INCTL0 |= SD16INCH_0;P6SEL |= BIT1 | BIT0;break;case 1:SD16INCTL0 |= SD16INCH_1;P6SEL |= BIT3 | BIT2;break;case 2:SD16INCTL0 |= SD16INCH_2;SD16AE = SD16AE6 | SD16AE7;break;case 3:SD16INCTL0 |= SD16INCH_3;SD16AE = SD16AE4 | SD16AE5;break;case 4:SD16INCTL0 |= SD16INCH_4;SD16AE = SD16AE2 | SD16AE3;break;case 5:SD16INCTL0 |= SD16INCH_5;break;case 6:SD16INCTL0 |= SD16INCH_6;break;case 7:SD16INCTL0 |= SD16INCH_7;break;}