SPI RTC MAX6902实时时钟的驱动和应用笔记，及其驱动代码，网上很少关于SPI 的，大家参考一下，一定要8个字节一起写。-SPI RTC MAX6902 RTC driver and application notes, and the driver code, on-line small on the SPI, we refer to, we must write 8 bytes together.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001842s ]
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:0.084063s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001322s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000935s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003217s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000870s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003667s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016313s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001295s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 244918 [ RunTime:0.010229s ]
