ds1337_write_control
return ds1337_write_control(ds1307, DS1337_BIT_RS1 | DS1337_BIT_RS2,
return ds1337_write_control(ds1307, DS1337_BIT_INTCN, 0);
ds1337_write_control(ds1307, DS1337_BIT_INTCN, DS1337_BIT_INTCN);