采用KEIL MDK开发环境，实现USB下的虚拟串口驱动程序，内附全部源码，欢迎交流！-Using KEIL MDK development environment to achieve under the virtual USB serial port driver, included all the source code, please share!
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Virtual_COM_Port USB_lib STM32_lib source project include readme.txt
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002692s ]
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:0.091581s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002526s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002127s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002372s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003854s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002066s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003285s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015039s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002548s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 169206 [ RunTime:0.001198s ]
