串口通信自动检测程序，已经通过测试，能够成功在2812板上运行。-Automatic detection of serial communication program, has passed the test, be able to successfully run on the board at 2812.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001041s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.097265s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000925s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001122s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000982s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003064s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000910s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006115s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021013s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001670s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 137141 [ RunTime:0.023961s ]
