摘要: http://www.chipkin.com/rs485-cables-why-you-need-3-wires-for-2-two-wire-rs485/ RS485 needs 3 conductors and a shield. Many people say its a two wire n 阅读全文
posted @ 2016-09-12 17:52 aardvark 阅读(6381) 评论(0) 推荐(0) 编辑
摘要: http://www.cnblogs.com/bluestorm/p/3432190.html 问题:字段初始值设定项无法引用非静态字段、方法或属性的问题 下面代码出错的原因,在类中定义的字段为什么不能用? public class Test { public Test() { } public i 阅读全文
posted @ 2016-09-03 00:00 aardvark 阅读(411) 评论(0) 推荐(0) 编辑
摘要: https://segmentfault.com/q/1010000004829859/a-1020000004850311 Q: STM32的启动文件startup_stm32f10x_hd.s中的描述是 This module performs: Set the initial SP Set t 阅读全文
posted @ 2016-08-26 04:15 aardvark 阅读(691) 评论(0) 推荐(0) 编辑
摘要: https://visualstudiogallery.msdn.microsoft.com/ad686131-47d4-4c13-ada2-5b1a9019fb6f About This is a small add-in for Visual Studio 2008. It searches a 阅读全文
posted @ 2016-08-23 15:11 aardvark 阅读(230) 评论(0) 推荐(0) 编辑