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RSS订阅原创 The explanation of RequestRrtiTxList in DataRequestRangingDescriptor in IEEE 802.15.4z
RequestRrtiTxList is used for the RRTI request. According to the IEEE 802.15.4z, RRTI NESTED SUB IE is created by MAC, NOT by UL. Therefore, UL fill the DataRequestRangingDescriptor to request MAC to fill RRTI into the UWB frame. If it uses the deferred tr
2021-11-09 16:14:22
178
原创 How to solve the type alias conflict in C
If C project has multiple aliases by the keyword of “typedef”, it would cause compiling error of conflict. This could not be solved directly by the directive of”#ifndef” because it is not defined by the preprocessor directive, such as “#ifndef”. This probl
2021-03-08 10:56:18
198
原创 TDOA algorithm summary
This article is purposed to summary the TDOA algorithm implementations. In the real application, TDOA has two different typies, one is no source locating where the tag need only listenning to the anchor's synchronization message and get the position by the
2021-03-02 10:32:48
186
转载 USART vs UART: Know the difference( repost)
copy from https://www.edn.com/electronics-blogs/embedded-basics/4440395/USART-vs-UART--Know-the-differenceHave you ever used the term UART only to be corrected by another engineer that it isn’t a UA...
2019-05-30 10:57:02
361
原创 How to debug problems in strange field for an engineer
It is often hard for a software engineer to debug a problem hidden in a new product or project with little background knowledge, although this phenomena is not rare in fact. But for the engineer, how ...
2019-03-20 09:14:55
203
转载 Dynamic loading in embedded sytem
参考代码来源于《嵌入式系统开发之道》P378-381,对其中的注释进行了修改。另外，需要指出的是，源代码中对control table和相应的存储block的申请和释放，考虑了要和相邻块尽可能的进行合并，这样可以减少碎片。 #define TBL_WIDTH 8 /* the occupied byte numbers in a item of the control Table */
2017-10-21 22:08:37
289
原创 3GPP TS 36.331 ASN.1消息中Optional的含义
Table 6.1-1: Meaning of abbreviations used tospecify the need for fields to be presentAbbreviationMeaningCond conditionTag[u1] (Used in downlink only)Conditionall
2017-10-14 14:15:14
3386
原创 编程常用链接
https://github.com/explore open source projecthttps://www.codeproject.com/ reference source code and articlehttp://www.gnu.org/ GNU open source https://sourceforg
2017-09-04 23:56:06
549
原创 Windows中HWND定义说明
在WinNT.h中，可以看到宏定义；#define DECLARE_HANDLE(name) struct name##__{int unused;}; typedef struct name##__ *name在windef.h中，可以看到： DECLARE_HANDLE（HWND)；对上述宏定义展开，即struct nameHWND__ {int unuse
2017-02-09 16:31:18
8991
原创 typedef struct tagstrct{} STRUCTTYPE
首先，开发平台:visual studio 2010 ,language :C. 在a.h中定义 typedef struct tagstruct { int a; } STRUCTTYPE;
2016-11-29 18:27:54
577
转载 C++ 中int，char，string，CString类型转换（一）
1. c++中string到int的转换1) 在C标准库里面，使用atoi：#include #include std::string text = "152"; int number = std::atoi( text.c_str() ); if (errno == ERANGE) //可能是std::errno { //number可能由于过大或过小
2016-05-31 23:25:55
447
NB-IOT R14协议
2017-12-27
NB-IOT R13 2016.6 13.2主要协议
2017-08-08
arm M3 related
2017-08-08
frhed binary file editor
2016-06-15
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