PIC模拟异步串行通讯UART。用TMR0实现定时查询。任何带中断的PIC上都可以实现。可用此法扩展多个串口。-PIC simulation asynchronous serial communications UART. Timing TMR0 with inquiries. Any interruption with the PIC are to be attained. This method can be extended serial number.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000960s ]
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:0.081662s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001027s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001006s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003105s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000942s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016712s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001115s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 308056 [ RunTime:0.025005s ]
