DS1302用1602显示加按键调时

void main()
{
GND=0;
delay(100);
init1602();
init_1302();
while(1)
{
keyscan();
if(keyflag==0)
{
readtime();
write_second();
write_minute();
write_hour();
write_day();
write_month();
write_year();
write_week();
}
}
}