大家好，我的研究生项目遇到了很大麻烦。我必须使用89600 VSA通过Matlab编程来模拟基于IEEE802.11a标准的OFDM帧。我编写了我的Matlab代码并构建到.mat文件然后加载到VSA但它不起作用。请帮我弄清楚这个问题。我非常感谢你的帮助。您忠诚的。映。 ofdm_v2.m2.6 KB 以上来自于谷歌翻译 以下为原文Hi everyone, I have a big trouble with my graduate project. I have to simulate an OFDM frame based on IEEE802.11a standard using 89600 VSA by Matlab programming. I have written my Matlab code and built to .mat file then loaded to VSA but it doesn't works. Please help me to figure out this trouble. I am very appreciated with all your help. Yours faithfully. Anh.附件fig.png327.2 KBofdm_v2.m2.6 KB
2019-02-19 07:12
大家好，我正在做葡萄糖测量，在这里我正在连接IDAC、VDAC、TIA（跨阻抗放大器）。葡萄糖测试条给出电流，所以我正在服用IDAC。TIA VOUT的输出方程＝VREF I*R，通常对于i＝0的情况VOUT＝VREF，但这里i＝0，即，我不把任何东西连接到终端，但是我在测量Vout，我得到的是0.29 V，为什么是奇怪的输出，或者我哪里错了。我正在上传TopDead的图像。噻葡糖苷520.9 K 以上来自于百度翻译 以下为原文Hi to all, I am doing glucose measurement , in this i am Interfacing IDAC, VDAC, TIA(Transimpedance Amplifier).Glucose Test Strip gives current so iam taking IDAC . The Output Equation at TIAVout=Vref-I*R, Normally for I=0 case Vout= Vref , but here I=0 i.e i am not connecting any thing to terminal , but i am measuring Vout, what i am getting is 0.29v, why is this strange output or else i am wrong any where.i am uploading Image of TOPDESIGN. TIA_Glucose.bmp 520.9 K
2019-05-30 11:31
到目前为止，我的集合中仅有的具有以下结构的MCC生成的.h文件是FVR.H：所有其他的都没有关闭IFDEF部分（上面代码示例中的最后3行），并且一些文件也没有第一个IDEF部分！CPLUSSPLUS部分是在那里吗？如果是，它应该是什么样子？在哪些文件中？让我困惑的事情似乎有很多可变性。 以上来自于百度翻译 以下为原文 The only MCC generated .h file in my collection so far that has the following structure is fvr.h:#ifdef __cplusplusextern "C" {#endif ...code......code......code... #ifdef __cplusplus}#endifAll the others have no closing ifdef section (the last 3 lines in the above code example) and some files do not have the first idef section either! Is the cplusplus section meant to be there?If it is, what should it look like?In which files? There seems to be a lot of variability in things which confuses me.
2019-02-21 14:03
你好。我可以用USB或串口F / W下载？在最初的F / W的下载，我们将使用JTAG。但在重新下载，我们不能使用JTAG因为机械结构（公屋JTAG端口永久）。谢谢您。以上来自于百度翻译 以下为原文Hello. Can I use USB or UART port for F/W download? In initial f/w download, we will use JTAG. But In re-download, we can't use JTAG because of mechanical structure(housing blocks jtag port permanently). Thank you.
2018-08-29 16:18
大家好，在过去的几天里，我感到非常沮丧： -[与Momentum（ADS2006）一起开始怀疑我们是否已经做出了将这个工具全部放在一起的正确决定。我想知道的是，是否有人能够使用至少4层模拟合理的复杂基板布局？不是简单的电感器或发夹滤波器等。我的基板~8x6mm具有2个RF（约30个键合线）和基带（约90个键合线）。也有一些被动物。基本上是典型的SiP。我的工作站是全新的64Bit戴尔8），4 GB内存，3.2GHz处理器，WinXP 64，我已经设置了100GB虚拟内存。这台机器上也安装了很少的其他应用程序，基本上是一个干净的安装。很高兴知道其他工程师能够做什么。谢谢，以上来自于谷歌翻译 以下为原文 Hi All,Over the past few days I have getting pretty frustrated :-[ with Momentum (ADS2006) and am beginning to wonder if we have made the right decision in getting this tool all together. What I would like to know is if anyone has been able to simulate resonably complex substrate layouts with at least 4 layers? Not simple inductors or hairpin filters etc. My substrate ~8x6mm has and 2 die an RF (about 30 bond wires) and baseband (about 90 bond wires). There are a few passives too. Basically a typical SiP. My workstation is a brand new 64Bit Dell 8), 4 GB RAM, 3.2GHz processor, WinXP 64, I have setup 100GB virtual ram. There are very few other apps installed on this machine too, basically a clean installation.It would be good to know what other engineers have been able to do. Thanks,
2018-08-29 16:49
问候语！我在PCB上有PIC18F66 J60，我有一个简单的程序。我有一些const字符串：并且我使用缓冲区来操作这些字符串：第一行的行是OK！问题是，当我试图执行这个副本第二次（等等），似乎const字符串名称指向另一个位置…所以我在缓冲器中接收随机数字。我做错了什么？ 以上来自于百度翻译 以下为原文 Greetings! I have PIC18F66J60 on a pcb and I have a simple program. I have a few const strings:const unsigned char *Command4Respond="Set date time responce";And I`m using a buffer to manipulate these strings:volatile unsigned char StringBuffer[50];unsigned char *buffer=&StringBuffer[0];strcpy(buffer,Command4Respond); The first execution of this row is OK! The problem is when I tried to execute this copy second time(and so on) it seems the const string name is pointing to another location... So I receive random numbers into the buffer.What am I doing wrong?
2019-05-05 08:57
我们有一个使用PIC18F46J50设备的产品，我们最近制造了另一批产品。不幸的是，新的批必须被编程，我们无法找到正确的文件加载到设备上，并且负责人不再与公司在一起。我们有MPLAB X IDE V4.15，并且我们能够从工作设备读取（上载）设备存储器，并对新设备进行编程。生成的文件。然而，新设备并没有像预期的那样工作。问题是，从一个旧设备读到一个新设备是一个可靠的做法吗？否则，我们必须假设新批产品可能装配错了。当然，同时，我们正在努力理解设备编程，但我们急于让产品尽快工作。谢谢。 以上来自于百度翻译 以下为原文 We have a product using the PIC18F46J50 device and we recently fabricated another batch of the product. Unfortunately the new batch must be programmed, and we cannot find the correct file to load onto the device, and the person responsible is no longer with the company.We have MPLAB X IDE v4.15 and we were able to read (upload) the device memory from a working device and program the new devices with the resulting file. However, the new devices are not working as expected. The question is; is reading from an old device and writing to a new one a reliable practice? Otherwise we must assume that the new batch of product may have beenassembled incorrectly.Of course, in the meantime, we are struggling to understand the device programming, but we are anxious to get the product working ASAP.Thank you
2018-09-11 14:53
我正在做一个电路的示例项目，我将布局（将使用PIC32 MZ）。所以我使用的是Harmony pin配置管理器，但我就是无法弄清楚（我使用的是.ony、configurator等的所有最新版本）。假设我想配置以下几个pinsas：RG15:LED_ALARM,output,lowRA5:PA._SWITCH,input,pullup onRE5:MOTOR_DRIVE,output,low所以我在MHC配置器PIN SETTINGS TAB中设置所有这些，并选择希望使用UART&一些uart选项&点击代码ge嵌套按钮。到目前为止没问题……一堆文件神奇地出现了。现在，我怎么/在哪里编写代码来打开LED_ALARM？即使我输入app.c或m a in.c，这个名称似乎在任何地方都不会自动“弹出”……我是否遗漏了某些内容（比如需要手动拉入头文件？）好像它还没有“学会”我的PIN名字。我是否使用适当的程序来命名配置器中的PIN？我找不到在PIN配置器文档中描述任何地方的过程！我四处寻找关于用配置器设置基本引脚I/O的协调信息，但是找不到？？？？ 以上来自于百度翻译 以下为原文 I am doing a sample project for a circuit I will layout (will use a pic32Mz).So I am using the Harmony pin configuration manager, but I simply can't figure it out (I am using all of the latest versions of harmony, configurator, etc).Say I want to configure a few pins as the following:RG15:LED_ALARM, output, lowRA5:PANIC_SWITCH, input, pull up onRE5:MOTOR_DRIVE , output, lowSo I set all of this up in the MHC configurator PIN SETTINGS TAB, along with selectingmy desire to use the UART & some uart options & hit the code generation button.No problem so far...a bunch of files magically appear.Now how/where do I, say, write a line of code to turn on my LED_ALARM?The name does not seem to auto "pop up" anywhere even when I'm typing in either my app.c or main.c ...did I leave something out (such as needing to manuall pull in a header file?) It's as though it hasn't "learned" my pin names.Am I using the proper procedure to name my pins in the configurator? I can't find the procedure described anywhere in the pin configurator documentation! I looked around for Harmony info on setting up basic pinI/O with the configurator, but couldn't find it???
2019-06-17 14:52
大家好我有一些VHDL的经验。我的问题是，随着设计变得庞大和复杂，在实现的设计中引入了一些错误，我确信这是由于我的设计合成错误，而不是由我做出的逻辑/时间错误。我已经研究了很多关于这些错误的来源，并且我已经找到了一些预防它们的经验法则。例如，我知道单个vhd文件中不应该有多个状态机。但是，当我设计一个大型系统时，我不确定它的不同部分的正确功能。有时我会花几天时间尝试调试我的设计，最后我意识到设计本身没有错误，错误是错误合成的结果。例如，一个模块中的小而不重要的更改有时会使另一个完全独立的模块的操作停止。这太令人不安了。我想知道是否有一个全面的设计指南，其中包括必须遵守的所有细节，以达到正确合成的设计，其行为是完全可预测的。以上来自于谷歌翻译以下为原文Hello guysI have some experience with VHDL. My problem is that, as the design becomes large and complicated, some bugs are introduced into the implemented design, which I am certain that are due to bad synthesis of my design, and not logical/timing mistakes made by me. I have researched alot about the sources of such errors, and I have figured out some rules of thumb for preventing them. For example, I understand that there should not be more than one state machine in a single vhd file. But still, when I design a large system, I am not sure about correct functionality of it's different parts. sometimes it happens that I spend several days trying to debug my design, when at the end I realize that there is no error in the design itself, and the errors are the results of bad synthesis. For example, a small and unimportant change in one module, sometimes brings the operation of another, completely independant module to a halt. This is so troubling. I was wondering if there is a comprehensive design guidline, which includes all the details that must be observed in order to reach a correctly synthesized design whose behaviour is completely predictable.
2019-02-21 09:28
大家好，最近，该公司一直积极提供将您的项目从8位微控制器转移到32位微控制器。鉴于此，我对使用STM8进行未来发展的可行性表示担忧。我喜欢这些高效廉价的处理器，我不想在不久的将来失去这种工程资源。如果有人可以，任何事情，请说一下，那么请参加。 #stm8 #future以上来自于谷歌翻译以下为原文 Hello everybody,Recently, the company has been actively offering to transfer your projects from 8-bit micro-controllers to 32-bit ones. In view of this, I had concerns about the feasibility of future developments with the use of STM8. I like these efficient and inexpensive processors, and I would not want to lose this engineering resource in the near future. If anyone can, anything, say about this, then please participate. #stm8 #future
2018-11-09 09:52
