//HT1380实时时钟驱动程序

            sbit clock_dat=P0^1;
            sbit clock_clk=P0^2;
            sbit clock_rst=P0^3;

            sbit a0=ACC^0;
            sbit a1=ACC^1;
            sbit a2=ACC^2;
            sbit a3=ACC^3;
            sbit a4=ACC^4;
            sbit a5=ACC^5;
            sbit a6=ACC^6;
            sbit a7=ACC^7;

            void clock_out(unsigned char dd) {
            ACC=dd;
            clock_dat=a0;clock_clk=1;clock_clk=0;
            clock_dat=a1;clock_clk=1;clock_clk=0;
            clock_dat=a2;clock_clk=1;clock_clk=0;
            clock_dat=a3;clock_clk=1;clock_clk=0;
            clock_dat=a4;clock_clk=1;clock_clk=0;
            clock_dat=a5;clock_clk=1;clock_clk=0;
            clock_dat=a6;clock_clk=1;clock_clk=0;
            clock_dat=a7;clock_clk=1;clock_clk=0;
            }
            unsigned char clock_in(void) {
            clock_dat=1;
            a0=clock_dat;
            clock_clk=1;clock_clk=0;a1=clock_dat;
            clock_clk=1;clock_clk=0;a2=clock_dat;
            clock_clk=1;clock_clk=0;a3=clock_dat;
            clock_clk=1;clock_clk=0;a4=clock_dat;
            clock_clk=1;clock_clk=0;a5=clock_dat;
            clock_clk=1;clock_clk=0;a6=clock_dat;
            clock_clk=1;clock_clk=0;a7=clock_dat;
            return(ACC);
            }
            unsigned char read_clock(unsigned char ord) {
            unsigned char dd=0;
            clock_clk=0;
            clock_rst=0;
            clock_rst=1;
            clock_out(ord);
            dd=clock_in();
            clock_rst=0;
            clock_clk=1;
            return(dd);
            }
            void write_clock(unsigned char ord,unsigned char dd) {
            clock_clk=0;
            clock_rst=0;
            clock_rst=1;
            clock_out(ord);
            clock_out(dd);
            clock_rst=0;
            clock_clk=1;
            }