企业级物联网开发与应用-畅读网

　　　　

企业级物联网开发与应用

作者：廖建尚

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mobi/epub/pdf/awz3

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计算机网络 >> 软硬件开发

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内容简介:

本书结合CC2530、ZigBee、STM32和Contiki操作系统等多种技术介绍物联网开发技术，由浅入深地对企业级物联网系统的开发进行了详细的介绍。本书采用项目式开发的学习方法，给出了28个贴近社会和生活的物联网应用案例，每个案例均有完整的开发过程，分别是明确的开发目标、详细的系统设计过程、深入浅出的原理学习、详细的开发内容和完整的开发验证，最后进行总结和拓展，将理论学习和开发实践结合起来。每个案例均给出了完整的开发代码，读者可以在源代码的基础上快速地进行二次开发。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 3 LIMIT 1 [ RunTime:0.001225s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 35 LIMIT 1 [ RunTime:0.001436s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.002159s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001851s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1750755574 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.630912s ]

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