OA_TC6_REG_STATUS0
ret = oa_tc6_read_register(tc6, OA_TC6_REG_STATUS0, ®val);
return oa_tc6_write_register(tc6, OA_TC6_REG_STATUS0, regval);
ret = oa_tc6_read_register(tc6, OA_TC6_REG_STATUS0, &value);
ret = oa_tc6_write_register(tc6, OA_TC6_REG_STATUS0, value);