利用单片机arm加sl811芯片实现对u盘读写的控制，代码仅供大家参考，如有不对之处，敬请谅解-Sl811 increase the use of single-chip chip arm of the u disk read and write control code for your reference, if doing so after updating
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002800s ]
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:0.087860s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002493s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002786s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002355s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003896s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002064s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003649s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015172s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002489s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 113122 [ RunTime:0.001341s ]
