#include <STC15F2K60S2.H>
#define FOSC 11059200L
//-----------------------------------------
#define S1_S0 0x40 //P_SW1.6
#define S1_S1 0x80 //P_SW1.7
//-----------------------------------------
void main()
{
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=0
// P_SW1 = ACC; //(P3.0/RxD, P3.1/TxD)
ACC = P_SW1;
ACC &= ~(S1_S0 | S1_S1); //S1_S0=1 S1_S1=0
ACC |= S1_S0; //(P3.6/RxD_2, P3.7/TxD_2)
P_SW1 = ACC;
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=1
// ACC |= S1_S1; //(P1.6/RxD_3, P1.7/TxD_3)
// P_SW1 = ACC;
while (1)
{
// ......
}
}
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