两颗51单片机通过串口通信的代码,独有的仲裁机制使得任一颗单片机都能成为主机.-2 51 Single-chip serial communication through the code, unique to the arbitration mechanism allows any host can become a single-chip microcomputer.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001324s ]
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:0.127173s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001216s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001342s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005451s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001180s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005108s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014461s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001183s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 192103 [ RunTime:0.012395s ]
